Answer:
12
Step-by-step explanation
PEMDAS is key to solving. First you multiply 4*5 because its the first parenthesis we see, to get 20. Next we see that 1-2 is in a different parenthesis, so we get -2. So our current equation is 20-10-2-1+5. You just add/subtract in that order. 20-10=10 10-2=8 8-1=7 7+5=12 So your final answer is 12.
letters cost $1 each to send in the mail and packages cost $5 each the equation x + 5y = 25 describes how many letters and packages you can send for $25 find the y intercept and explain what it means
Answer:
y is the packages in the equation
Will mark the brainliest
PLAYGROUND Lukas is walking around the edge of the playground shown. How far will Lukas have walked when he finishes one loop
around the playground? Round to the nearest unit, if necessary.
Answer:
40 units
Step-by-step explanation:
This question is essentially asking the perimeter of the traingle
We can easily find the sides AC and BA and while you can use the distance formula to find the last side this is a right triange so we will take an easier approach
So because AC has the same y we can very easily figure out how far apart they are by subtracting (or counting) the x values
For me I got AC= 15
AB is kind of the same deal but instead subtract the y value
I got BA= 8
We can now use the a^2+b^2=c^2 formula to get the length of the last side
8^2+15^2=c^2
This means that 289=c^2
take the square root of both sides to get
c=17
The final step is to get the perimeter which is 17+8+15 or 40
Totally forgot how to do this, please help.
Answer:
-2/21 is the answer hope it helps
What is the equivalent fraction of 6/8 with 32 as the new denominator
Nothing else to it, just find the value of the expressions.
Answer:
k-k-k-kabbajje!
Step-by-step explanation:
Plz help I dont know
Sneha drinks a 27-ounce energy drink containing 137 calories per 9 ounces. How many calories did she drink?
Answer: 411
Step-by-step explanation:
How to select south Africa in countries
Answer:
what what 7-Eleven would 7th you have
10+(-6)
What is it please tell me
Answer:
4
Step-by-step explanation:
Answer:
The answer is 4
Step-by-step explanation:
I learnt this in 7th grade.
A restaurant has a sign by the front door that says, "Maximum occupancy: 75 people."
What percentage of its capacity is 84 people?
Answer:
112%
Step-by-step explanation:
The percentage of its capacity is calculated as
Number of people / Maximum Occupancy × 100%
Number of people = 84 people
Maximum Occupancy = 75 people
Hence:
84 people /75 people × 100
= 1.12 × 100
= 112%
Therefore, the percentage of its capacity that is 84 people is 112 %
Courtney used 25 out of her 30 tickets to select a prize at the arcade.
What is this fraction written as a decimal?
Answer:
.83333
Step-by-step explanation:
..............
What is this problem solve ? 2(n-1) +4n=2(3n-1)
Answer:
Any value will work
Step-by-step explanation:
2n - 2 + 4n = 6n - 2 -> 6n - 2 = 6n - 2 -> 0 = 0. Any value will work
Answer:
infinitely many solutions
Step-by-step explanation:
i ready
What is the answer???
The exterior angles of an octagon Are X, 2X, 3X, 4X, 5X, 6x, 7X and 8X. What is the size of the smallest interior angle of this octagon?
A. 10
B.45
C.80
D.100
Answer:
Hence, the smallest interior angle of this octagon is 100
Step-by-step explanation:
Final answer 100
What is the equation of the line that passes through the point (4,−2) and has a slope of −2?
Answer:y=-2x+6
Step-by-step explanation:
You want to find the equation for a line that passes through the point (4,-2) and has a slope of -2.
First of all, remember what the equation of a line is:
y = mx+b
Where:
m is the slope, and
b is the y-intercept
To start, you know what m is; it's just the slope, which you said was -2. So you can right away fill in the equation for a line somewhat to read:
y=-2x+b.
Now, what about b, the y-intercept?
To find b, think about what your (x,y) point means:
(4,-2). When x of the line is 4, y of the line must be -2.
Because you said the line passes through this point, right?
Now, look at our line's equation so far: . b is what we want, the -2 is already set and x and y are just two "free variables" sitting there. We can plug anything we want in for x and y here, but we want the equation for the line that specfically passes through the the point (4,-2).
So, why not plug in for x the number 4 and for y the number -2? This will allow us to solve for b for the particular line that passes through the point you gave!.
(4,-2). y=mx+b or -2=-2 × 4+b, or solving for b: b=-2-(-2)(4). b=6.
Express 2x squared - 3x - 5 as the product of two binomial factors
Answer:
(2x - 5) (x + 1)
Step-by-step explanation:
2x2 - 3x - 5 = 0
(2x - 5) (x + 1) = 0
does anyone know how to do the rest?
Answer/Step-by-step explanation:
Given:
[tex] \frac{4}{x} - \frac{3}{y} = 1 [/tex] ---› Equation 1
[tex] \frac{8}{x} + \frac{9}{y} = 7 [/tex] ---› Equation 2
Solution:
✔️Equation 1 × 3:
[tex] \frac{4}{x}*3 + \frac{3}{y}*3 = 1*3 [/tex]
[tex] \frac{12}{x} + \frac{9}{y} = 3 [/tex] ---› Equation 3.
✔️Equation 2 + Equation 3:
[tex] \frac{8}{x} + \frac{9}{y} = 7 [/tex] ---› Equation 2
[tex] \frac{12}{x} + \frac{9}{y} = 3 [/tex] ---› Equation 3.
Thus:
[tex] \frac{-4}{x} = 10 [/tex]
Cross multiply
[tex] 10x = -4 [/tex]
Divide both sides by 10
[tex] x = -\frac{4}{10} [/tex]
[tex] x = -\frac{2}{5} [/tex]
✔️Find y:
Substitute x = -2/5 into equation 1
[tex] \frac{4}{x} - \frac{3}{y} = 1 [/tex] ---› Equation 1
[tex] \frac{4}{\frac{-2}{5}} - \frac{3}{y} = 1 [/tex]
[tex] \frac{4}*{\frac{5}{-2}} - \frac{3}{y} = 1 [/tex]
[tex] -10 - \frac{3}{y} = 1 [/tex]
Add 10 to both sides
[tex] - \frac{3}{y} = 1 + 10 [/tex]
[tex] \frac{-3}{y} = 11 [/tex]
Cross multiply
[tex] 11y = -3 [/tex]
Divide both sides by 11
[tex] y = -\frac{3}{11} [/tex]
Please answer this correctly without making mistakes.I want ace expert and genius people to answer this correctly without making mistakes
Rewrite in simplest terms: 3h - 2(-0.1h - 0.8)
please help
Answer:
3.2h+1.6
Step-by-step explanation:
3h-2(-0.1h-0.8)
3h+0.2h+1.6
3.2h+1.6
help please
solve for x
Answer:
x = 17
Step-by-step explanation:
4x-10 and 58 are alternate interior angles since the lines are parallel
Alternate interior angles are equal.
4x-10 = 58
Add 10 to each side
4x-10 +10 = 58+10
4x = 68
Divide each side by 4
4x/4 = 68/4
x = 17
Answer:
17
i did the math at home.
A can of soup contains 1 1/4 cups. A serving is 1/2 of a cup. How many servings are in the
can?
1 3/4
3
21/2
2
Answer:
c 2 1/2
Step-by-step explanation:
Answer:
I think it is b. 3. Im not sure though.
Step-by-step explanation:
rectangle has an area of x2 + 3x — 4 and a width of x— 1. What is the length of the rectangle?
Answer:
x+4
Step-by-step explanation:
If you plug in the answer choices (x+4, x-4, x+2, x-2) into (x-1) (insert solution), x+4 gives you x^2+3x-4. :)
The average credit card rate for new users is nearly 15%. Suppose you buy a $120 pair of shoes
using a brand-new credit card. If you are not able to make any payments on your credit card,
how much money will you owe 4 years after you purchased the shoes?
Answer:
$480
Step-by-step explanation:
The following are the ages (years) of 5 people in a room: 24, 17, 18, 16, 20 A person enters the room. The mean age of the 6 people is now 25. What is the age of the person who entered the room?
Answer:
The man or woman that entered the room was 55 years of age.
Step-by-step explanation:
If we add up all the ages together, it is 95. When the other person walks in, the mean changes to 25. If you do the math, or if you count, the man or woman that enters is 55, which when added together, gives 150. divided by 6 equals 25.
drag the tiles to the correct boxes to complete the pairs.
the graph shows a quadratic function f(x).
Answer:
Nothing
Step-by-step explanation:
There is no real question or graph
The chart shows Jolene's tutoring schedule. Today she worked with both math and
chorus students. When is the next time Jolene will tutor both subjects on the same
day?
Subject. Frequency
Math Every2Days Chorus
Every 5 Days
Pls help urgent
Answer:
10
Step-by-step explanation:
5x2=10
Answer:
10
Step-by-step explanation:
5 times 2 equals 10
Describe the data for a correlational research study and explain how these data are different from the data obtained in experimental and nonexperimental studies, which also evaluate relationships between two variables. A correlational study satisfies which conditions?
Answer:
Step-by-step explanation:
Determine the number and types of solutions for
6m^2-3m-4=0
Answer:
2 real solutions
Step-by-step explanation:
Remember this messy thing?
[tex]x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}[/tex]
The quadratic formula, as it's called, gives us the roots to any quadratic equation in standard form (ax² + bx + c = 0). The information on the type of roots is contained entirely in that bit under the square root symbol (b² - 4ac), called the discriminant. If it's non-negative, we'll have real roots, if it's negative, we'll have complex roots.
For our equation, we have a discrimant of (-3)² - 4(6)(-4) = 9 + 96 = 105, which is non-negative, so we'll have real solutions, and since quadratics are degree 2, we'll have exactly 2 real solutions.
How to tell if y=1/7x is proportional
Answer:
It is proportional
Step-by-step explanation:
y=Kx
because it crosses the orgin
CRoC=Cop
An automobile manufacturer claims that its van has a 59.1 miles/gallon (MPG) rating. An independent testing firm has been contracted to test the MPG for this van since it is believed that the van has an incorrect manufacturer's MPG rating. After testing 160 vans, they found a mean MPG of 59.5. Assume the variance is known to be 2.89. A level of significance of 0.1 will be used. Find the value of the test statistic. Round your answer to 2 decimal places.
Answer:
Test statistic Z = 1.8099
Step-by-step explanation:
Step(i):-
Given that mean of the Population (μ) = 59.1 miles/gallon
Mean of the sample (x⁻ ) = 59.5
The standard deviation of the Population = 2.89
mean of the sample (n) = 160
Step(ii):-
Test statistic
[tex]Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }[/tex]
[tex]Z = \frac{59.5-59.1 }{\frac{2.89}{\sqrt{160} } }[/tex]
Z = 1.8099
Test statistic = 1.8099
