Answer:
x ≥ 1
Step-by-step explanation:
Solving inequalities are essentially like solving equations where the main focus is getting the variable, x in this case, on one side and a constant on the other using inverse operations.
10x+16 ≥ 6x+20
==> subtract 16 from both sides
10x ≥ 6x + 4
==> subtract 6x from both sides
4x ≥ 4
==> divide both sides by 4
x ≥ 1
So the answer would be A
Also an important note for future references is when you divide one of the sides by a negative number you must flip the inequality sign.
E.g. -4x>8
We would divide both sides by -4 and because we divide by a negative number we must flip the inequality signs
This would result to x<-2
leo has 3/4 gallon of milk in a jug. he uses 1/3 of the milk to make soup. then he pours 1/4 of the remaining milk into a glass. how many gallon of milk are left in the jug?
There is 1/6 gallon of milk left in Leo's jug.
The step by step fraction subtraction are as follows:
The first step would be to deduct the 3/4 gallon of milk with 1/3 he uses to make the soup.
3/4 - 1/3 = (3x3)/(4x3) - (1x4)/(3x4) = 9/12 - 4/12 = 5/12
Then out of 5/12 gallon of milk left in the jug, he pours 1/4 of the remaining milk into a glass.
5/12 - 1/4 = 5/12 - (1x3)/(4x3) = 5/12 - 3/12 = 2/12 = (2÷2)/(12÷2) = 1/6
So Leo has 1/6 gallon of milk left in the jug.
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Which of the following graphs shows the solution to the system of equations?
Y=5x-1
Y=x+3
Answer: (1,4)
Step-by-step explanation:
The system of equations:
y=5x-1 (1)
y=x+3 (2)
Hence,
5x-1=x+3
5x-1-x=x+3-x
4x-1=3
4x-1+1=3+1
4x=4
Divide both parts of the equation by 4:
x=1
Substitute the value of x=1 into equation (2):
y=1+3
y=4
Thus, (1,4)
Solve for w.
w^2-4w+4=0
the amount of lemonade at the beginning of the party was 45 quart. At the end of the party there was 8 quarts left. What was his percentage of change in the amount of quarts?
His percentage of change in the amount of quarts is 82.22%.
Initial amount of lemonade = 45 quart
End amount of lemonade = 8 quart
Change in amount = 45 - 8
= 36
Percent = [tex]\frac{change in value}{initial value}*100[/tex]
= [tex]\frac{37}{45}*100[/tex]
= 0.8222 * 100
= 82.22%
Hence, his percentage of change is 82.22%.
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Tell whether the lines through the given points are parallel, perpendicular, or neither.
Line 1: (-3,1) (-7,-2)
Line 2: (2,-1), (8, 4)
The slope of line 1 is
.
The slope of line 2 is
.
Answer:
Answer:
We use the formula:
y2 - y1 / x2 - x1
-2 - 1 / -7 - (-3) ---> this gives us -3 / -4 or simply 3/4. So our slope for line 1 is 3/4.
Now using the formula, (y - y1) = m (x - x1) we find the line.
(y - 1) = 3/4 (x - (-3)) ---> (y - 1) = 3/4x + 9/4.
Now we add one to each side to get y = 3/4x + 13/4.
Now for line 2, we use the same process and formulas.
Find the slope of line 2.
4 - (-1) / 8 - 2 gives us 5/6. Our slope for line 2 is 5/6.
(y - (-1)) = 5/6 (x - 2).
(y + 1) = 5/6x - 5/3 ---> now subtract one from both sides to get...
y = 5/6x - 8/3.
Since the two lines do not have the same slope or the negative reciprocal of one slope being the other, the two lines through the given points are neither parallel nor are they perpendicular
Use four unit multipliers to convert 40 square inches to square meters?
The convertion 40 square inches to square meters is 0.0258064 square meters.
You can convert a square inch measurement to a square metre measurement by multiplying the square inch measurement by 0.00064516. (the conversion factor). Here is the equation:
Square inch value divided by square metre value is 0.00064516.
Consider converting 40 square inches to square metres. Using the above conversion formula, you will obtain:
= 40 sq in * ( 2.54 cm / 1 in)² * (1 m/100cm)²
= 40 × 0.00064516
= 0.0258064 square meter.
Hence, convert 40 square inches to square meters is 0.0258064 square meters.
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A woman has a total of $11,000 to invest. She invests part of the money in an account that pays 7% per year and the rest in an account that pays 8% per year. If the interest earned in the first year is $
810, how much did she invest in each account?
If a woman has a total of $11,000 to invest. The she invested in each account is: 4000 at 8%, 7000 at 7 %.
Total amount of money invested = $11000
x+y=11000,
Total interest for the year= $760
0.07×x+0.08×y=810
x=11000-y
We substitute for x
0.07×(11000-y)+0.08×y=810
We multiply out
770-0.07y+0.08×y=810
We combine like terms.
0.01×y=40
Divide both side by 0.01y
y = 40 /0.01
y= 4000 at 8%
x=11000-y
Calculate x
x = 11,000 - 4,000
x=7000 at 7 %
Therefore she invested 4000 at 8%, 7000 at 7 %.
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On October 23, 2011, one South African rand was worth 0.12 U.S. dollars.
(a) On that date, how many dollars was 199.65 rand worth?
Round your answer to the nearest hundredth of a dollar,
dollars
(6) On that date, how many rand was 29.11 dollars worth?
Round your answer to the nearest hundredth of a rand,
0-
rand
The value of 199.65 rand was worth $24 and $29.11 was worth 243 rand with rounding off.
What is foreign currency exchange?
A global decentralized or over-the-counter market for trading currencies is known as the foreign exchange market. For every currency, exchange rates are set by this market.
Main body:
Given: 1 rand = $0.12
a) According to question ,
199.65 rand = 0.12* 199.65
= 23.948
Now rounding off to nearest hundred , we get
199.65 rand = $24
b) According to question,
$1 = 1/ 0.12
$29.11 = 29.11/ 0.12
=242.5833333
Now rounding off to nearest hundred , we get
$29.11 = 243 rand.
Hence answer are $24 and 243 rand.
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Help me solve this please
From trigonometric ratio, we used the tangent of the angle to determine that the flagpole is leaning by an angle of 47.12°
Trigonometric RatioThe six trigonometric ratios are sine (sin), cosine (cos), tangent (tan), cotangent (cot), cosecant (cosec), and secant (sec). In geometry, trigonometry is a branch of mathematics that deals with the sides and angles of a right-angled triangle. Therefore, trig ratios are evaluated with respect to sides and angles.
In the question, we can assume the point of view and the flagpole makes a right angle triangle.
Flagpole = opposite = 14ftDistance to flag pole = adjacent = 13ftangle = ?Since we have the opposite and adjacent, we can find the acute angle by using the tangent of the angle
tanθ = opposite / adjacent
tan θ = 14 / 13
θ = tan⁻¹(14/13)
θ = 47.12°
The flagpole is leaning with an acute angle of 47.12 degrees
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Tanay’s full time job is to work as a sales clerk at clothing store. She’s hired at the rate $9.20/h for a 37.5 h week. In the last week of August she works her regular hours and then works 8 hours on Sunday to do inventory. For working on Sunday she is paid time and half her regular rate. Calculate Tanya’s earnings for the last week of August.
Tanya's earnings for the last week of August is $455.40.
What is the total earnings?Tanya's earnings for the last week of August is the sum of the amount earned for working regular hours and overtime.
Earnings = amount earned working regular hours + amount earned for working overtime
Amount earned working regular hours = number of hours worked x wage rate
Amount earned working regular hours =37.5 x 9.20 = $345
Amount earned for working overtime = wage per hour worked overtime x number of hours worked overtime
Wage rate for overtime = 1.5 x $9.20 = $13.80
Amount earned for working overtime = $13.80 x 8 = $110.40
Total earnings = $110.40 + 345 = $455.40
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Didn't mean to post question
You're question should be deleted soon probably 10-15 minutes.
↑ My opinion not answer by a admin/moderator.
I6
Jim began a 270-mile bicycle trip to build up stamina for a triathlete competition. Unfortunately, his bicycle chain broke, so he finished the trip
walking. The whole trip took 9 hours. If Jim walks at a rate of 4 miles per hour and rides at 40 miles per hour, find the amount of time he
spent on the bicycle.
Jim rode for hours.
The amount of time spent on bicycle by Jim =6.5 hours
The amount of time spent on walking by Jim =2.5 hours
What is the distance, speed and time equation?To calculate speed, divide the distance travelled by the time it took to complete the voyage, so speed = distance divided by time. These equations can be reduced as s=d/t, where s represents speed, d represents distance, and t represents time.
Distance divided by time equals speed. Distance = time * speed
To solve for speed or rate, utilize the speed formula, s = d/t, which implies speed equals distance divided by time. To solve for time, utilize the time formula, t = d/s, which implies time equals distance divided by speed.
Given,
Distance=270miles
Time=9 hours
Speed by walk=4 miles/hour
Speed by cycle=40 miles/ hour
t= time for riding a bicycle
9-t= time for walking
Distance= Speed ×Time
270=40t+4(9-t)
40t+36-4t=270
36t=234
t=6.5
Time spent on bicycle = 6.5 hours
Time spent on walking = 9-6.5
=2.5 hours
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A student's cost for last semester at her community college was $2900. She spent $290 of that on books. What percent of last semester's college costs was spent on books?
The percentage of last semester's college costs was spent on books is 10 %
What is a percentage?A percentage is a ratio out of 100.
How to find the percent of last semester's college costs was spent on books?Since a student's cost for last semester at her community college was $2900 and she spent $290 of that on books.
The percentage spent on books is given by x = amount spent on books/student cost × 100 %
Given that
Amount spent on books = $ 290 and student cost last semester = $2900Substituting the values of the variables into the equation, we have
percentage spent on books x = amount spent on books/student cost × 100 %
= $290/$2900 × 100 %
= 1/10 × 100 %
= 10%
So, thus we see that the percentage that was spent is 0 %
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A manufacturer has costs C(q) and revenues R(q) for producing a units.
The cost of producing 200 units is 2,958 dollars, and the marginal costs
at that production level is 9.2 dollars per unit. The revenue from
producing 200 units is 6,868 dollars, and the revenue at that production
level is decreasing by 2.7 per unit.
Estimate how many dollars is the profit when producing 204 units.
The profit when producing 204 units is $1,560.6
Cost of producing 200 units = $2958
Cost of producing 1 unit = $2958 / 200
= $ 14.79
Marginal cost of production = $9.2
Total cost per unit = cost of producing unit + Marginal cost
= $(14.79+9.2)
= $23.99
Cost incurred in producing 204 units = $(23.99 * 204)
= $4,893.96
Revenue from producing 200 unit,
R(q) = 6868
For each units, Revenue = R(q) / q
= 6868 / 200
= 34.34 dollars per cent
Revenue per unit is decreasing by $2.7
i.e., Final revenue = $(34.34 - 2.7)
= 31.64 dollars per cent
Final revenue for 204 units
= $(31.61 * 204)
= $ 6454.56
∴ Total profit from 204 units = R(q) - C(q)
= $(6454.56 - 4,893.96)
=$1,560.6
Hence, the profit when producing 204 units is $1,560.6
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Anyone mind helping me out? Photo is in picture!
Answer:
The 3rd answer.
Step-by-step explanation:
2(pi)10 is the equation.
I dont understand…please help
Answer:we need a better picture
Step-by-step explanation:I cant since my eyes are bad
the equation of line g is y = 3/4x + 3/4. line h is perpendicular to g. what is the slope of line h
The slope of line h that is perpendicular to line g is: -4/3.
What is the Slopes of Lines that are Perpendicular?The slope values of any two lines that are perpendicular to each other are values that are negative reciprocals to each other.
The equation of of line g is given as y = 3/4x + 3/4, it is expressed in slope-intercept form as y = mx + b. This means that the value of the slope of line g is 3/4.
The negative reciprocal of 3/4 is -4/3. Therefore, the slope of line h that is perpendicular to line g would be -4/3.
The slope of line h is: -4/3.
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Kalia’s parents give her simple interest on any money she saves for college. Which equation and solution represents the total interest, T, earned when the principal amount is $100, the annual simple interest rate is 1%, and the number of years is 10?
Answer:$110
Step-by-step explanation:
$100x0.01x10
Answer:
44
Step-by-step explanation:
Write a word problem that could be represented with 2 divided by 6 =2/6
Answer:
0.33=0.33
Step-by-step explanation:
it is answer 0.33=0.33
A square, two congruent trapezoids, and two congruent semicircles were used to form the figure shown. Which measurement is closest to the area of the figure in square centimeters? 40 cm 37cm² 28 cm² 55 cm²
Answer:
B. 37 cm²
Step-by-step explanation:
[tex]\boxed{\begin{minipage}{4.5 cm}\underline{Area of a square}\\\\$A=s^2$\\\\where $s$ is the side length.\\\end{minipage}}[/tex]
Given the side length of the square is 4 cm:
[tex]\begin{aligned}\implies \sf Area\;of\;the\;square&=4^2\\&=\sf 16\;cm^2\end{aligned}[/tex]
[tex]\boxed{\begin{minipage}{4.5 cm}\underline{Area of a semicircle}\\\\$A=\dfrac{1}{2}\pi r^2$\\\\where $r$ is the radius. \\\end{minipage}}[/tex]
The radius of a circle is half its diameter.
Given the diameter of the semicircles is 2 cm, then their radius is 1 cm.
[tex]\begin{aligned}\implies \textsf{Area of one semicircle}&= \sf \dfrac{1}{2} \pi (1)^2\\& = \sf \dfrac{1}{2} \pi \; cm^2\end{aligned}[/tex]
[tex]\boxed{\begin{minipage}{4.5 cm}\underline{Area of a trapezoid}\\\\$A=\dfrac{1}{2}(a+b)h$\\\\where:\\ \phantom{ww}$\bullet$ $a$ and $b$ are the bases. \\ \phantom{ww}$\bullet$ $h$ is the height.\\\end{minipage}}[/tex]
Given the bases of the trapezoids are 2 cm and 4 cm, and their height is 3 cm:
[tex]\begin{aligned}\implies \textsf{Area of one trapezoid}&= \sf \dfrac{1}{2} (2+4)(3)\\&= \sf \dfrac{1}{2} (6)(3)\\&= \sf (3)(3)\\&=\sf 9\;cm^2\end{aligned}[/tex]
Given the figure is made up of a square, two congruent trapezoids and two congruent semicircles:
[tex]\begin{aligned}\implies\textsf{Area of the figure}&= \sf square+2\;trapezoids+2\; semicircles\\&= \sf 16+2(9)+2\left(\dfrac{1}{2} \pi\right)\\& = \sf 16 + 18 + \pi \\& = \sf 34 + \pi \\& = \sf 37.14159...\; cm^2\end{aligned}[/tex]
Therefore, the measurement that is closest to the area of the figure in square centimeters is 37 cm².
If the 100th term of an arithmetic sequence is 287, and its common difference is 3, then
its first term a1 = ________
its second term a2 = ________
its third term a3 = _______
Hint: Use an =a1 + (n-1) d
Answer:
-10
-7
-4
Step-by-step explanation:
287 = [tex]a_{1[/tex] + (n-1)3
287 = [tex]a_{1}[/tex]+ (100-1)3
287 = [tex]a_{1}[/tex] + 99(3)
287 = [tex]a_{1}[/tex] + 297 Subtract 297 from both sides
-10 = [tex]a_{1}[/tex]
If the first term is -10 The second term is 3 greater -7 and the third terms is 3 greater than that. -4
Trying to see how smart you'll are
Answer: M = -11/3
Step-by-step explanation:
△MPQ: M(–4, 3), P(–5, 8), Q(–1, 6) Translation: along –4, –4 Reflection: in y = x
△MPQ: M(-4,3), P(-5,8), Q(-1,6). Translation: along (-4,-4) Reflection: in y=x is M''(-1,-8), P''(4,-9), Q''(2,-5).
Here we need to find translation along (-4,-4) and reflection in y=x.
First we will find translation,
⇒ (x,y)→ (x-4,y-4)
M(-4,3 )→ M'(-8,-1) ,
P(-5,8) → P'(-9,4)
Q(-1,6) → Q'(-5,2)
now we will do reflection,
⇒(x,y) → (y,x)
M'(-8,-1) → M''(-1.-8)
P'(-9,4) → P''(4,-9)
Q'(-5,2) → Q''(2.-5).
Therefore translation along (-4,-4) and reflection in y=x is M''(-1,-8), P''(4,-9), Q''(2,-5).
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A class contributed $19.00 in quarters and dimes to a local shelter. In all there were 100 coins. How many of each kind were there?
Step-by-step explanation:
x = number of dimes
y = number of quarters
x + y = 100
x = 100 - y
0.1x + 0.25y = 19
0.1(100 - y) + 0.25y = 19
10 - 0.1y + 0.25y = 19
10 + 0.15y = 19
0.15y = 9
y = 9/0.15 = 60
x = 100 - y = 100 - 60 = 40
there were 60 quarters and 40 dimes.
Find the value of x. Round to the dearest hundredth .
Step-by-step explanation:
the Hypotenuse (the inclined length of the staircase) of the right-angled triangle is the radius of an imaginary circle with the center at the vertex with the 64°.
then
11 = cos(64) × r
r = 11/cos(64) = 25.09289236...
and
x = sin(64) × r = sin(64) × 11/cos(64) = 11 × tan(64) =
= 22.55334226... ≈ 22.55
What is the value of X
Answer:
x=4
Step-by-step explanation:
Several years ago, Annie bought a computer for her small business. For tax purposes, Annie declares a constant rate of depreciation, or loss of value, for the computer. The graph shows the linear relationship between the value of the computer and the number of years Annie has owned it.
The line is:
y = 400*x + 2000
And the statements are:
The original purchase price of the computer is given by the y-intercept, which is $2,000
The change in the price of the computer is the slope, which is 400.
How to write the linear equation?
A general linear equation is written as:
y = a*x + b
Where a is the slope and b is the y-intercept.
If the line passes through two points (x1, y1) and (x2, y2), then the slope is:
slope = (y2 - y1)/(x2 - x1)
Using the graph we can identify two points like:
(1, 1600) and (5, 0)
Then the slope is:
a = (0 - 1,600)/(5 - 1) = 400
And the y-intercept is 2,000, as we can see on the graph.
Then the line is:
y = 400*x + 2,000
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A mixture of paint calls for 1/3 cups of red paint and 3/4 cups of yellow paint. How many cups of red paint would be needed for every 1 cup of yellow paint?
The cups of red paints for 1 yellow cup is 4/9 cups
How to determine the cups of red paints?From the question, we have the following parameters that can be used in our computation:
Red paint = 1/3 cups
Yellow paint = 3/4 cups
When these parameters are represented as ratio, we have the following expression
Ratio = Red : Yellow
This is then represented as
Red : Yellow = 1/3 : 3/4
When the number of yellow cups is 1, we have
Red = 1/3/3/4
Express as products
Red = 1/3 * 4/3
Evaluate
Red = 4/9
Hence, the red cups is 4/9 cups
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PLEASE HELP! WILL GIVE BRAINLIEST IF RIGHT!
Answer:
last dagre would be 3
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
The degree of a polynomial will be no less than one more than the number of turning points of its graph.
From inspection of the given graph, there are 3 turning points.
Therefore, the least degree is 4.
Which descriptions from the list below accurately describe the relationship
between AQRS and ATUV? Check all that apply.
4
76°
4
Q2S
76
12
28
76
T 6
12
76
A. Congruent
B. Similar
c. Same size
D. Same sides
The given two triangles ΔQRS and ΔTUV are similar.
What is similar figures?
The same shape between two figures is referred to as similarity. If two figures have congruent corresponding angles and equivalent length ratios on their corresponding sides, they are said to be similar mathematically. The scale factor is the name of this often used ratio.
Given: Two triangles ΔQRS and ΔTUV.
The angles of ΔQRS are 28°, 76° and 76°.
The angles of ΔTUV are 28°, 76° and 76°.
So, the angles of given two triangles are congruent.
Now consider, the sides of the triangle.
The sides of ΔQRS are, 4, 4, 2 and
The sides of ΔTUV are 12, 12, 6.
It seems that the sides of the triangle are in proportion.
Therefore, the given two triangles ΔQRS and ΔTUV are similar.
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