2 years ago

What is the justification for each step in the solution of the equation?

Mathematics

1 answer:

Luden [163]2 years ago

5 0

The second one i think would be x > -6

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Which expression is a perfect cube?

faust18 [17]

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2 years ago

if a dog food costs 0.75 per pound, and dog bones cost 1.75 each, what is the cost of 2 bones and 25 pounds of dog food?

Studentka2010 [4]

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2 bones and 25 pounds of dog food would cost $22.25

Step-by-step explanation:

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3 years ago

Rebecca went swimming yesterday. After a while she had covered one fifth of her intended distance. After swimming six more lengt

alukav5142 [94]

Answer:

Option E.

Step-by-step explanation:

Let the intended length of Rebecca's swimming is = x units

and we assume the length of the pool = l units

Now it is given in the question that " She covers one fifth of her intended distance "

That means distance covered = $\frac{x}{5}$

" After swimming six more lengths of the pool she had covered one quarter of her intended distance"

So $\frac{x}{5}+6(l)=\frac{x}{4}$

$6l=\frac{x}{4}-\frac{x}{5}$

$6l=\frac{x}{20}$

x = 20×(6l)

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Option E is the answer.

4 0

2 years ago

Simplify 6|-3|-4|5| <br><br> Show Work

kvv77 [185]

Problem: 6|-3|-4|5|
Whenever something is in: |21| in the lines, you would just count the number itself.
So it is: 6·3-4·5 which would equal: 6·3-4·5
The answer to 6·3 is 18, so its 18 minus the answer of 5·4 which is 20.
So its: 18-20= -2
~Hope i helped. :)

6 0

3 years ago

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(3x+7)(x+7)=0<br>What are the two possible values?

lana [24]

For the given equation, either 3x + 7 = 0 or x + 7 = 0

Now,

3x + 7 = 0

3x = -7

x = -7/3

x + 7 = 0

x = -7

So, possible values of x is : -7 and -7/3

6 0

2 years ago

Read 2 more answers