Emma buys and sells truck parts. She bought two tires for $35 each and later sold them for $65 each. She bought three rims for $75 each and later sold them for $136 each. She bought five headlight covers for four dollars each and later sold them for $15 each what is Emma’s total profit

Answers

Answer 1
Answer:

Let us see her money earned first

65 * 2 + 136 * 3 + 15 * 5 = 613

versus how much she spent

35 * 2 + 75 * 3 + 5 * 4 = 315

613-315 = 298


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Half of the candies in a jar are gumdrops. One-fourth of the candies are chocolates. There are 4 lollipops. There is an equal number of lollipops and chocolates. How many gumdrops are there?
On a class test, Lesley scored 4.5 points more than her friend Cathy. Lesley scored 81.5 points. Cathy's score, x, can be found using the equation below.The solution to the equation was calculated to be x = 36. Is this solution reasonable? A. Yes, it is reasonable because Lesley scored 4.5 points more than Cathy. Cathy scored more than 81.5 points. B. No, it is not reasonable because Lesley scored 4.5 points less than Cathy. Cathy scored less than 81.5 points, not more. C. Yes, it is reasonable because Lesley scored 4.5 points more than Cathy. Cathy scored 86 points. D. No, it is not reasonable because Lesley scored 4.5 points more than Cathy. Cathy scored less than 81.5 points, not more.
Whats 13% of 80plz answer correctly

Which is Equal to 82%:18/100

19/50

41/50

Or 83/100

Thx :)

Answers

the answer is 41/50 because if you solve it, 41/50=0.82. Since it is a percentage, you multiply the answer, 0.82, by 100 and you get 82. hope that helped :)

A car uses one gallon of gasoline for every 20 miles it travels. If a gallon of gasoline costs $3.98, how much will the gas cost, to the nearest dollar, to travel 180 miles?

Answers

$x/180mi=$3.98/20mi.
180/20=9
so 3.98(9)=$ for 180 miles.  
3.98(9)=$35.82

Which function equation represents the table? A. f(x) = -x + 2
B. f(x) = -3x + 2
C. f(x) = 2x + 3
D. f(x) = 3x + 2

Answers

The answer is D. f(x) = 3x+2

This is because this is the ONLY function equation that works for ALL of the ordered pairs listed in the table

-4 = 3(-2) + 2
-4 = -6 +2 
-4 = -4

-1 = 3(-1) +2
-1 = -3 +2
-1 = -1

2 = 3(0) + 2
2 = 0 + 2
2 = 2

5 = 3(1) + 2
5 = 3 + 2 
5 = 5

8 = 3(2) +2 
8 = 6 +2
8 = 8

Write an equation you can use to find the length of the rectangle

Answers

we just need to know the perimeter
so say we only know the width 
which is 10
and the perimeter which is 30
hint( perimeter is all of the sides added up
anyways so we know that theres 2 sides that are ten so that gives us 
30 - 20 = 10
but there are 2 more sides to lets divide by 2 
10 ÷ 2 = 5 
so the length would be 5 
heres the equation
P = perimeter 
W = width
L = length
soooo
P - 2w = L ÷ 2

:P hope this helps

a recipe that makes 6servings calls for 1/2 of butter nancy modified the recipe so that it can serve 8 how many cups of butter does she need

Answers

You can foc1/2÷6=1/12 1/12×8= 8/12 or 2/3

Plzzzzz help............Twelve decreased by twice a number is the same as 8 times the sum of the number plus 4. What is the number?Is the equation 2x-12=8(x+4)

Answers

Okay, the equation would be 12 - 2x = 8(x + 4), you got close!

what i would do first is distribute to get rid of those evil parenthesis and make  this all simple ^-^

So, we take 8 times x, and 8 times 4.

Our equation, is now 12 - 2x = 8x + 32

Now, what i would do, is simplify it. Get x to one side, and a whole number to the other. Well, for me it would be easier to keep the larger number on the right, and x on the left!

So we have to be fair, and keep it equal! So, i would start with.... subtracting 32. Since its a positive 32, to cancel it out we have to subtract 32, to get to zero! so, by subtracting 32 on both sides ( 12 - 32 and 32 - 32) we end up with -20 - 2x = 8x

Now looking at - 20 - 2x = 8x, i can see what i need to do. i need to get x to one side, and whole numbers to the other. There are no whole numbers on the right, just variables and coefficients, so i have to get that x away from the left!

So, im going to add 2x on both sides, to eliminate it! So we add 2x on the left to cancel it out, and add 2 x on the right to balance it out! We are now left with -20 = 10x

Now what we do is we get rid of that tag along right by the x! Yep, that little 10 there! He has to go!

How to we get rid of him? Well, he is being multiplied by the x! So, we have to do the opposite and divide to get him alone. So, we divide by 10 on both sides, and we are left with -2 = x!

Now, time to check your answer! Basically, you replace x with -2 in the equation! Here we go:

12 - 2(-2) = 8(-2 + 4)

First we should start with multiplying! when we multiply the -2 in the equation, we get 12 + 4 = 8(2), and we can finish that off by simplifying it to 12 + 4 = 16

when we simplify it and add 12 + 4, we get 16. So we are left with 16 = 16.

This equation is true, so we are right! -2 DOES equal x!