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3 years ago

Are 4(a - 3) and 4a - 7 equivalent expressions?

Mathematics

2 answers:

Anarel [89]3 years ago

7 0

Answer:

Yes

Step-by-step explanation:

Given expression: 3x+9

Take 3 outside from the expression, we get,

= 3(x+3), which is called the equivalent expression

spin [16.1K]3 years ago

4 0

Answer:

Step-by-step

We have to multiply the 4 by both the a and the 3 since there a parenthesis around them. This would of course be distributive property. Since you don't know what a is, it would just be 4a and since we can multiply 4 and 3 that would be 12. So, 4(a - 3) is equivalent to 4a - 12.

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Round this number to the nearest tenth. 52.85

k0ka [10]

Answer:

52.9

numbers 0-4 the number stays the same

numbers 5-9 the number goes up one

6 0

3 years ago

Find the measure of angle A. x + 47 780 x + 61 A) 31° B) 44° C) 51°

kondaur [170]

A hope it’s correct

5 0

3 years ago

Read 2 more answers

I am weighed on scales which have a 10% error, that is, the scales show me 10% heavier than my real weight. If I actually weigh

stiks02 [169]

Remember you said the scale shows you 10% heavier.

So that's an increase of 10%

So value = 10% + 100% = 110%

So scale would show 110% of 82

110% of 82

= (110/100) * 82

= 1.1 * 82

= 90.2

OR

We can simply find 10% of 82 and add it to the original 82.

10% of 82

(10/100) * 82

0.1 * 82 = 8.2

8.2 + 82 = 90.2 Same answer as before.

So scale shows 90.2 kg.

4 0

3 years ago

Read 2 more answers

Factor the polynomial-x^3-4x^2-5x

Gnom [1K]

Answer:

(-x)(x^2 + 4x + 5)

Step-by-step explanation:

You have to factor out the -x from the rest of the expression.

5 0

3 years ago

Which polynomial lists the powers in descending order? A. –10 + 4x3 – 4x5 + 2x4 + x7 B. x7 – 4x5 + 2x4 + 4x3 – 10 C. x7 + 4x3 +

Artist 52 [7]

The answer for the exercise shown above is the option B, which is: $x^{7} -4 x^{5} +2 x^{4} +4 x^{3}- 10$
The explanation is shown below:
To list the powers of the polynomial given in the problem above in descending order, you must write the terms from the highest degree to the lowest degree. You have that the highest degree is $7
$ and the lowest degree is $0
$ (Because $-10 x^{0} =-10(1)=-10$ . Therefore, you have that the correct option is the option B.

4 0

3 years ago