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3 years ago

What is numbers are difference of 5

Mathematics

1 answer:

stepladder [879]3 years ago

8 0

Step-by-step explanation:

let the numbers x and y

so x + y =13

x - y = 5

add two equations together

2x = 18

divide both side by 2

x = 9

sub in any equation

9 + y =13

y = 4

the numbers are 9 and 4

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A pet supply store lets you donate your change to the local animal shelter. Denise buys a bag of dog food for $15.74 and a squea

Marta_Voda [28]

Considering her change, it is found that she will donate $0.28 to the animal shelter.

<h3>How to find the amount of change in a purchase?</h3>

The amount of change is given by the subtraction of the total paid and the price of the products.

In this problem, the price of the products bought is given by:

$15.74 + $3.98 = $19.72

She paid $20, hence the change is given by:

$20 - $19.72 = $0.28.

More can be learned about the amount of change in a purchase at brainly.com/question/10866253

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1 year ago

Don’t understand that problem

nata0808 [166]

Answer:

(2c³ -20c² -10c) -(c² -40c +100)

Step-by-step explanation:

Profit

For a problem involving cost, revenue, and profit, you are expected to know that profit is the difference between revenue and cost. That is, if it costs you $2 to make a necklace you sell for $10, your profit is $10 -2 = $8.

Problem

The problem gives you polynomial expressions for revenue and cost, and asks you to combine them to make an expression for profit. In this first part, we simply show how we will combine them. (We presume a later part of the question will ask you to simplify the result.)

profit = revenue - cost

Substituting the given expressions, we have ...

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5 0

3 years ago

Julie and Eric row their boat (at a constant speed) 55 miles downstream for 5 hours, helped by the

Archy [21]

Answer: C = 3 mph is the rate of the current.

Step-by-step explanation:

Hey there!

You can use the distance formula (d = rt) to solve this problem.

Downstream trip: d = 55 miles, t = 5 hours, and r = R + C

R + C is their rowing speed (R) plus the rate of the current (C).

Upstream trip: d = 55 miles, t = 11 hours, and r = R - C

R - C is their rowing speed (R) minus the rate of the current (C).

Downstream: 55 mi. = (R + C)5 hrs. Divide both sides by 5: R + C = 11

Upstream: 55 mi. = (R - C)11 hrs. Divide both sides by 11: R - C = 5

Calculations

R + C = 11 Subtract C from both sides.

R = 11 - C Substitute this into: R - C = 5

(11 - C) - C = 5 Simplify and solve for C

11 - 2C = 5 Add 2C to both sides.

11 = 2C + 5 Subtract 5 from both sides.

6 = 2C Divide both sides by 2

C = 3 mph is the rate of the current.

~I hope I helped you! :)~

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3 years ago

Given the function f(x) = 4x^2 - 17, find f (h+2).

forsale [732]

Answer:

Step-by-step explanation:

Substitute x = h + 2 into f(x), that is

f(h + 2)

= 4(h + 2)² - 17 ← expand factor using FOIL

= 4(h² + 4h + 4) - 17 ← distribute parenthesis and simplify

= 4h² + 16h + 16 - 17

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Answer:

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