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3 years ago

7

Rasheed needs to say $231 to earn money he plans to wash cars and charge $12 for car right to estimates Rasheed could use to det

ermine how many cars he needs to wash

2 answers:

geniusboy [140]3 years ago

6 0

About 20 cars. Easiest way to figure it out is do 231$ divides by 12$ and get 19.25, so 20.

PilotLPTM [1.2K]3 years ago

4 0

The answer is 16 the original answer was a decimal but you cannot split a car in half so that is what I got

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Use elimination to solve the following system of<br> equations: 17x - 2y = 25<br> 17x + 3y = 5

Fynjy0 [20]

Step-by-step explanation:

$17x - 2y = 25$

$17x + 3y = 5$

Both equations have a $17x$ term in them, so if we subtract the second equation from the first, it will eliminate those terms, allowing us to solve for the remaining $y$ terms:

$(17x - 2y) - (17x + 3y) = 25 - 5$

$(17x - 17x) + (-2y - 3y) = 20$

$-5y = 20$

$y = -4$

Finally, we can plug this value for $y$ into either of the two original equations to solve for $x$ :

$17x - 2(-4) = 25$

$17x + 8 = 25$

$17x = 17$

$x = 1$

This means the solution to the system of equations is $(1, -4)$ .

6 0

3 years ago

A new mixture of self-tanning & moisturizing lotions for everyday use is being developed. This mixture is made by mixing 70

vazorg [7]

For each ounce of the product, let
x = ounces of moisturizing lotion used,
y = ounces of self-tanning lotion used.

The sum of the two lotions per ounce is equal to one ounce. Therefore
x + y = 1 (1)

Moisturizing lotion costs $0.70 per ounce.
Self-tanning lotion costs $22 per ounce.

Because the product costs $1.30 per ounce. Therefore
0.70x + 22y = 1.30 (2)

From (1), obtain
y = 1 - x (3)

Substitute (3) into (2).
0.70x + 22(1 - x) = 1.30
0.70x - 22x + 22 = 1.30
-21.3x = -20.7
x = 0.9718 ounces
From (3), obtain
y = 1 - 0.9718 = 0.0282 ounces.

A batch of the product is 700 ounces. Therefore the amount of self-tanning lotion used is
700*y = 700*0.0282 = 19.74 ounces

Answer: 19.74 ounces

8 0

3 years ago

Lauren buy a television that cost $805 she plans to make equal payments of $38 each a month until the television is paid in full

jeka94

First, do $805 divided by $38. Your approximate answer should be about 21.184. This means, she is going to pay $38 for the next 22 months

8 0

3 years ago

A medical lab is testing a drug that removes a certain percent of fluid from the lungs of a patient every eight hours. The expre

lara31 [8.8K]

In the expression, 4,000(0.58)^3n...

4000 would represent the initial amount of fluid in the patient's lungs before the drug is introduced (it is the maximum value as well).

0.58 would represent the rate at which the amount of fluid in the patient's lungs is removed by the drug (42% removed every 8 hrs).

3n would represent the number of times the drug has removed a certain percentage of fluid from the patient's lungs ("n" by itself would actually represent the amount of days elapsed).

The whole expression (4,000(0.58)^3n) would represent the amount of fluid remaining in the patient's lungs after each day.

answer: C

5 0

3 years ago

A grocery store has received a shipment of apples.There are 15 boxes of apples,and each box contains 17 bags of apples. Each bag

gogolik [260]

Answer:

There are 3060 apples in the shipment.

Step-by-step explanation:

Given:

Number of boxes of apples = 15

Each boxes contains = 17 bags of Apples

hence 15 boxes will contains = Number of bags of apples in 15 boxes.

By Using Unitary Method we get;

Number of bags of apples in 15 boxes = $15\times 17= 255 \ bags \ of \ apples$

Hence 15 boxes contains = 255 bags of apples.

Also Given:

Each bag contains = 12 apples

255 bags contains = Number of apples in 255 bags

By Using Unitary Method we get;

Number of apples in 255 bags = $255\times12= 3060 \ apples$

Hence 255 bags of apples contains = 3060 apples.

Hence There are 3060 apples in the shipment.

5 0

3 years ago