What is the slope of the line that passes through the following points ?
(-7,0) and (4,-2)
Answer:
[tex]\displaystyle m=\frac{-2}{11}[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Slope Formula: [tex]\displaystyle m=\frac{y_2-y_1}{x_2-x_1}[/tex]Step-by-step explanation:
Step 1: Define
Point (-7, 0)
Point (4, -2)
Step 2: Find slope m
Simply plug in the 2 coordinates into the slope formula to find slope m
Substitute in points [SF]: [tex]\displaystyle m=\frac{-2-0}{4--7}[/tex][Fraction] Simplify: [tex]\displaystyle m=\frac{-2-0}{4+7}[/tex][Fraction] Subtract/Add: [tex]\displaystyle m=\frac{-2}{11}[/tex]The monthly membership fee for an online
television and movie service is $9.80.
The cost of viewing television shows online
is included in the membership fee, but
there is an additional fee of $1.50
to rent each movie online. For one
month Jill's membership and movie
rental fees were $12.80. How many
movies did Jill rent online that month?
Answer:
your answer would be 2
Step-by-step explanation:
12.80= 9.80 + 1.50x
3= 1.50x
x=2
An item costs $430 before tax, and the sales tax is $25.80.
Find the sales tax rate. Write your answer as a percentage.
Answer:
Step-by-step explanation:
if the item is 430, and the sales tax is 25.80
we can find how much is 1%
430/100=4.30
25.80/4.30=6
the sales tax is 6%
Solve : 12 1/2 - (-4 1/2) =
Answer:
17 :) your welcome
Step-by-step explanation:
Nicole can type 42 words in minutes.
What is her rate in words per 6 minute?
Answer:
252
Step-by-step explanation:
6x42=252
Can u guys help me please I need ASAP 123or4
Answer:
It is A.
Step-by-step explanation:
Answer:
It's 3. (1,-5)
Step-by-step explanation:
Look where the lines intersect!!
12.5% of $100 is what number? percent proption
Answer: $12.5
Step-by-step explanation:
The $100 Is 100 percent meaning that one percent is $1. Take that and multiply it by 12.5 and get $12.5
Answer:
12.5
Step-by-step explanation:
12.5 % of 100$ = 12.5
([tex]\frac{12.5}{100}[/tex]) x (100) = 12.5
NEED DONE BY 8 PLEASE HELP
HELP ME I BEG U a solution to the equation 4x-3y=12 must also be a solution to which of the following equation?
(1) 4x+3y= -12
(2) 12x-9y=36
(3) 2x-3y=6
(4) 8x-6y=12
Answer:
(2) is the correct answer
Step-by-step explanation:
if you multiply the given equation by 3 you get answer (2):
3(4x - 3y) = 3(12)
12x - 9y = 36
Answer:
(2) 12x-9y=36
Step-by-step explanation:
4x-3y=12 (×3)
12x-9y=36
Help my I’m begging please it is very important
Answer:
30% Markup
Step-by-step explanation:
10-7= 3 3=30%
$700/100 = 7 so they were originally bought at $7. they are sold at $10 so they are raised by $3. the percent they are raised by is 3/7, or about 43%
2e = 2 Solve the equation.
Answer:
e=1
Step-by-step explanation:
Answer:
e = 1
Step-by-step
i hope this helped have a great day!
Solve:
a = –8
a = 0
a = 8
no solution
The solution is Option B.
The value of a from the equation is a = 0
What is an Equation?Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the equation be represented as A
Now , the value of A is
Substituting the values in the equation , we get
( 1/8 )⁻³ᵃ = ( 512 )³ᵃ be equation (1)
On simplifying the equation , we get
when a = 0
Substitute the value of a = 0 , we get
( 1/8 )⁻³ˣ⁰ = ( 512 )³ˣ⁰
On simplifying the equation , we get
( 1/8 )⁰ = ( 512 )⁰
Any number raised to the power 0 will be 1
So , ( 1/8 )⁰ = ( 512 )⁰ = 1
1 = 1
Therefore , the value of a = 0
Hence , the equation is solved
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Help me please answer this question.
Answer:
Table D is proportional
Step-by-step explanation:
the ratio of 2:1 is true throughout each coordinate pair.
Answer:
Table D
Step-by-step explanation:
d1v1d3, wr1t3 1n s1mpl3st f0rm
2 [tex]\frac{7}{9}[/tex] ÷ 2
Answer:
25/18
Step-by-step explanation:
2. The local Farm Market sells peppers at five for $2.25. Complete the rate table Number of Peppers 1 2 4 5 10 15 20 100 Cost 2.25 What is the constant of proportionality? How do you know?
Answer:
K = $0.45
1____ 2__ 4 __5___10__ 15__ 20__ 100
0.45_0.9_1.8_2.25_4.5_6.75__9___45
Step-by-step explanation:
Given the data:
Number of pepper: 1 2 4 5 10 15 20 100
Cost :
Cost of 5 pepper = 2.25
Using variation :
Cost = number of pepper * k
K = CONSTANT of proportionality
k = cost / number of pepper
k = 2.25 / 5
k = 0.45
Hence,
Cost of pepper = k * number of pepper
Number of pepper:
Cost :
1____ 2__ 4 __5___10__ 15__ 20__ 100
0.45_0.9_1.8_2.25_4.5_6.75__9___45
Find the distance between the two points rounding to the nearest tenth (if necessary) (6,-1) and (-1,6)
Answer:
9.89
Step-by-step explanation:
Find the distance between the two points rounding to the nearest tenth (if necessary) (6,-1) and (-1,6)
Step one:
given data
x1=6
y1=-1
x2=-1
y2=6
Step two:
The distance between two point is
d=√((x_2-x_1)²+(y_2-y_1)²)
substitute
d=√((-1-6)²+(6+1)²)
d =√((-7)²+(7)²)
d =√49+49
d=√98
d=9.89
The blue ones is the shaded region
=====================================================
Explanation:
We'll apply the arc length formula
L = theta*r
Theta is the central angle and r is the radius. This formula only works when the angle is in radian mode. In this case, theta = 4/3 radians.
Arc length AB is part of a circle that has radius r = 8, so,
L = theta*r
L = (4/3)*8
L = 32/3
That represents the length of arc AB. This length is in cm.
-----------------------
Let x be the length of segment BD. This is also the length of AC as well due to rotational symmetry.
Arc CD is part of the larger circle that has radius r = 8+x
L = theta*r
L = (4/3)(8+x)
-----------------------
We found the following lengths so far
arc AB = 32/3segment BD = xarc CD = (4/3)(8+x)segment AC = xThese four pieces form the sides of the blue region. Therefore, they form the perimeter of the blue region. Add up these four sides and set the sum equal to the given perimeter 48. Then solve for x.
(arcAB)+(segmentBD)+(arcCD)+(segment AC) = perimeter of blue region
(32/3) + (x) + (4/3)(8+x) + (x) = 48
32/3 + x + (4/3)*8+(4/3)*x + x = 48
32/3 + 2x + 32/3+(4/3)*x = 48
64/3 + 2x +(4/3)*x = 48
64/3 + 6x/3 +(4/3)*x = 48
64/3 + (10/3)*x = 48
(10/3)*x = 48-64/3
(10/3)*x = 144/3-64/3
(10/3)*x = 80/3
10x = 80
x = 80/10
x = 8
-----------------------
Since x = 8, we know that AC and BD are each 8 cm long.
This means that the larger circle has radius 8+8 = 16 cm
Now we'll apply the sector area formula. You can think of a sector as a pie slice or pizza slice. The formula shown below only works if theta is in radian mode.
Let's find the area of sector AOB. This is the smaller pie slice.
A = area of sector
A = (1/2)*theta*r^2
A = (1/2)*(4/3)*8^2
A = (1/2)*(4/3)*64
A = (1*4*64)/(2*3)
A = (2*64)/3
A = 128/3
Sector AOB is 128/3 square cm. Let's make m = 128/3 so we can use it later.
Now let's find the area of sector COD. We use the same theta value, but the radius is now 16 cm.
A = (1/2)*theta*r^2
A = (1/2)*(4/3)*16^2
A = (2/3)*256
A = 512/3
The area of sector COD is 512/3 square cm. Let n = 512/3.
-----------------------
The last thing to do is subtract the values of m and n to get the area we want.
blue area = (area of sector COD) - (area of sector AOB)
blue area = n - m
blue area = 512/3 - 128/3
blue area = (512-128)/3
blue area = 384/3
blue area = 128 square cm
If I can do a job in 1 and a half hours, and my friend can do the same job in 2 hours, how long will it take us working together?
Answer:
1 1/2 hours i think
Step-by-step explanation:
Mike drank 60% of his glass of milk. Afterwards, 80ml of milk remained in the glass. What volume of milk was initially in the glass?
Answer:
Step-by-step explanation:
[tex]x[/tex] is the total volume of milk.
100% - 60% = 40%
40% is left in the glass.
40% of [tex]x[/tex] = 80 ml
[tex]\frac{40}{100}[/tex] of [tex]x[/tex] = 80
[tex]x = 80[/tex] × [tex]\frac{100}{40}[/tex]
[tex]x = 200[/tex] ml
The volume of milk initially in the glass was 200 ml.
What is the percentage?A percentage is a minimum number or ratio that is measured by a fraction of 100.
Let x be the total volume of milk.
100% - 60% = 40%
40% is left in the glass.
40% of x = 80 ml
40 / 100 × x = 80
0.4 × x = 80
x = 200
Thus, The volume of milk initially in the glass was 200 ml.
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Given the table, how can you use a graph to find additional equivalent ratios? x y 2 3 4 6 Plot the ordered pairs (2, 3) and (4, 6). Start at (4, 6). Move right 3 and up 2, and then plot a point. Keep this same rate to get other points. Draw a line through the two given points. Any point below the line represents an equivalent ratio. Plot the ordered pairs (2, 4) and (3, 6). Start at (3, 6). Move right 2 and up 3, and then plot a point. Keep this same rate to get other points. Draw a line through the two given points. Any point on the line represents an equivalent ratio. PLSSSS I´LL GIVE BRAINLIEST TO WHOEVER ANSWERS FIRST!!!!!!!!!!!!!!!!!!!!! IM TIMED!!!!
Answer:
i think its A cs its the most reasonable one
Step-by-step explanation:
sorry if its wrong
One group went on a school field trip and was given $90 to split equally for their meal money. If the group had 10 people in it,
how much meal money would each person get.
Answer:
If they have 90$ to spend between the 10 people they can each 9 dollars to eat lunch with
Step-by-step explanation:
90
÷10
_____
9
please leave an explanation too !
Step-by-step explanation:
15(3) - 2(2 x 3 + 6)
45 - 2(12)
45 - 24
21
11(3) - 12
33 - 12
21
21 = 21
Find each unit rate, A car travels 210 mi in 14 h.
Hint: How many miles per hour?
Answer:
15 miles per hour
Step-by-step explanation:
Since we're looking for miles per hour ([tex]\frac{miles}{hour}[/tex]) we can just replace the variables in the fraction. So, 210 divided by 14.
[tex]\frac{210}{14} \\=15 miles per hour[/tex]
Hope this helps!
What happens to the atomic number as you move from left to right across a period on the periodic table?
Answer:
The atomic number increases as you move from left to right across a period.
A building with a height of 74m casts a shadow that is 37m long. A person standing next to the building casts a shadow that is 0.8m long. How tall is the person?
The person is 4 meters tall.
The person is 1.6 meters tall.
The person is 16 meters tall.
The person is 0.4 meters tall.
PLEASE HELPPPPPP!!!!!!!!!!!!!!!! this test has time limit and im already failing math
(*GIVING BRAINLIEST IF FAST AND CORRECT ANSWER!!!!!!!!!!!!!!!!!!!!!!!!!
Answer: 1.6 meters tall
Step-by-step explanation:
the building is twice as tall as its shadow sooo..
0.8 x 2 = 1.6m
Danielle pics 744 apples and an apple orchard she divides the apples equally into 40 baskets When dividing 744÷40 the first digit of the caution will be in What Place
Answer:
744/40=18.6
Step-by-step explanation:
the 1 in 18.6 is in the 10ths place
the 8 in 18.6 is in the ones place
the .6 in 18.6 is in the -ones place
Answer:
justin bro
madada
Step-by-step explanation:
Skyler spent $51.50 at the store before
tax. If she paid an additional 8.5% in
sales tax, what was the total amount
Skyler spent?
Answer:
$55.88
Step-by-step explanation:
Step 1: 51.50 times 8.5% = 4.3775
Step 2: Add 51.50 plus 4.3775
Step 3: 55.8775 round to the hundreth place.
Step 4: Skylar spent $55.88 after tax
Identify the similar triangle to the triangle shown. 8 40 A) 5 14 B) 11 49 C) 1 5 D) 5 12
Answer:
C 1 5
Step-by-step explanation:
that's ur answer I hope it's correct
find the image of (1,5) when it is reflected over the line y=x.
Answer:
(5,1)
Step-by-step explanation:
When you reflect a point across y = x, the x-coordinate and y-coordinate switch.
Answer:
(5, 1).
Step-by-step explanation:
When (x, y) is reflected over y = x the image is (y, x).
Which expression is equivalent to twice b plus the sum of 2 and b?
Answer :The answer is a 2b+2+b=3b+2
Step-by-step explanation:
