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3 years ago

An expression that is equivalent to (-8a-1)-(-7a+5)

Mathematics

1 answer:

horrorfan [7]3 years ago

5 0

Answer:

Step-by-step explanation:

(-8a - 1)- (-7a + 5) = -8a - 1 - 7a*(-1) + 5*(-1) { (-1) is disturbed to all the terms in (-7a +5)}

= -8a - 1 + 7a - 5

= -8a + 7a -1 - 5 {Combine like terms}

= -a - 6

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There are three times as many cats in the animal shelter as puppies. There are twelve times as many fish as there are puppies. I

damaskus [11]

Answer:

12 fish and puppies

Step-by-step explanation:

There is 1 fish for every 3 puppies. So that is 4 animals in 1 "set".

We have $\frac{12}{3}$ "sets", which means 4 sets.

4 fish per "set" and 3 "sets" means there are

4 × 3 or 12 fish and puppies.

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3 years ago

3(x+4)+5(x+1)=25 what is x?

Serjik [45]

3x+12+5x+5=25
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3 years ago

Two parallel lines are crossed by a transversal.What is the value of k?

mojhsa [17]

Answer: k=60

Step-by-step explanation:

5 0

3 years ago

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Maria can clean the entire house in two hours. Her sister, Sasha, can clean the house in three hours. How long would it take for

MAXImum [283]

72 minutes

We require their hourly rate of work

Maria cleans $\frac{1}{2}$ the house in 1 hour

Sasha cleans $\frac{1}{3}$ of the house in 1 hour

let x be the time it takes both to clean the house

$\frac{1}{2}$ + $\frac{1}{3}$ = $\frac{1}{x}$

multiply through by 6x

3x + 2x = 6

5x = 6 ⇒ x = $\frac{6}{5}$

Together they can clean the house in 72 minutes

6 0

3 years ago

What’s the distance between (4,-9) and (5,3)

laila [671]

Answer: Distance = √145

Concept:

Here, we need to know the concept of the distance formula.

The distance formula is the formula, which is used to find the distance between any two points.

If you are still confused, please refer to the attachment below for a clear version of the formula.

Solve:

Given information

(x₁, y₁) = (4, -9)

(x₂, y₂) = (5, 3)

Given formula

$Distance = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Substitute values into the formula

$Distance = \sqrt{(5-4)^2+(3+9)^2}$

Simplify values in the parentheses

$Distance = \sqrt{(1)^2+(12)^2}$

Simplify exponents

$Distance = \sqrt{1+144}$

Simplify by addition

$Distance = \sqrt{145}$

Hope this helps!! :)

Please let me know if you have any questions

7 0

3 years ago

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