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beks73 [17]
4 years ago
7

Which of the following is equivalent to the equation -5(3x -8 )= -45 ?

Mathematics
1 answer:
Elan Coil [88]4 years ago
4 0
Distributive property is
a(b+c)=ab+ac so
first, distribute
remember than (-) times (-)=(+)
-5(3x-8)=(-5)(3x)+(-5)(-8)=-15x+(+40)=-15x+40

so it is -15x+40=-45

the answe ris B
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Find the GCF of 35 and 42 show your work
Greeley [361]

Answer:

7

Step-by-step explanation:

Listing the factors of each number is one way, that is

factors of 35 : 1, 5, 7, 35

factors of 42 : 1, 2, 3, 6, 7, 14, 21, 42

The common factors are 1 and 7

The GCF is therefore 7

7 0
3 years ago
Mrs Wright spent 2/9 of her paycheck on food and 1/3 on rent. She spent 1/4 of the remainder on transportation. She had $210 lef
Troyanec [42]

Mrs Wright's paycheck was $ 630

<u>Solution:</u>

Given that,

Mrs Wright spend on food = \frac{2}{9}

Fraction spent on rent = \frac{1}{3}

She spent 1/4 of the remainder on transportation

Remaining left with her = $ 210

Let the paycheck amount be "n"

Now, we know that, paycheck amount = used amount + left over amount

Here, left over amount = 210

Paycheck amount = 2/9 of paycheck on food + 1/3 of paycheck on rent + 1/4 of remainder on transportation + 210

n=\frac{2}{9} n+\frac{1}{3} n+\frac{1}{4}\left(n-\frac{2}{9} n-\frac{1}{3} n\right)+210

Upon simplifying we get,

n=\frac{2}{9} n+\frac{3}{9} n+\frac{1}{4} n\left(1-\frac{2}{9}-\frac{3}{9}\right)+210

n=\left(\frac{2}{9}+\frac{3}{9}\right) n+\frac{1}{4} n\left(1-\frac{(2+3)}{9}\right)+210

On simplification, we get

n=\frac{5}{9} n+\frac{1}{4} n \times \frac{4}{9}+210

\mathrm{n}=\frac{5}{9} \mathrm{n}+\frac{1}{9} \mathrm{n}+210

On adding fractions we get,

\begin{array}{l}{\mathrm{n}=\frac{6}{9} \mathrm{n}+210} \\\\ {\mathrm{n}-\frac{2}{3} \mathrm{n}=210} \\\\ {\frac{1}{3} \mathrm{n}=210} \\\\ {\mathrm{n}=3 \times 210=630}\end{array}

Hence, the paycheck amount is $630

3 0
3 years ago
Two experiments are conducted to determine the mass of an object.
irga5000 [103]

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To check for the gravitational mass, an object should only have a gravitational force acting upon it. Hence, experiment 1 is the correct option.

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3 years ago
A young boy is growing at a rate of 3.5 cm per month. He is currently 90 cm tall. At that rate ,how many months will the boy gro
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First, subtract the height he will grow to to the height he is now.

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Now divide this from 3.5.

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So it will take 12 months for him to grow to a height of 132 cm.
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Answer:

Step-by-step explanation:

23

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