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3 years ago

Which of these is the longest 1 foot 1 yard 3 feet 39 inches 2.5 feet

1 answer:

5 0

39 inches is the longest bc a foot is 12 inches and the longest feet the is 3 feet or a yard. So 12 x 3 = 36 and that is 3 inches short than 39 so 39 is the longest.

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Which statement is true about the terms of the linear expression 13-4x in standard form?

AysviL [449]

Answer:

B) b=13

Step-by-step explanation:

13-4x is the same as -4x+13

8 0

2 years ago

Find the product. If the result is negative, enter "-". If the result is positive, enter "+". -7(- a2 ) 2 ( -b3 ).

m_a_m_a [10]

Answer:

The product is positive, thus it is $\bold{+7a^4b^3}$

Step-by-step explanation:

The full question in proper notation is:

"Find the product. If the result is negative, enter "-". If the result is positive, enter "+".

$-7(-a^2)^2(-b^3)$ "

We have to work with it using Order of operations know as well as PEMDAS, thus expression inside parenthesis go first and exponents.

On this expression we have to work with exponents

$(-a^2)^2 = (-a^2)(-a^2) =a^4$

Thus we get

$-7(-a^2)^2(-b^3)=-7a^4(-b^3)$

Lastly we can work with multiplication and remembering that the multiplication of two negative signs becomes positive.

$-7(-a^2)^2(-b^3)=7a^4b^3$

So the final simplified expression is $\bold{7a^4b^3}$

5 0

3 years ago

Read 2 more answers

The area of square ABCD is 7cm².<br> Show that x² + 4x = 3

soldier1979 [14.2K]

Answer:

see explanation

Step-by-step explanation:

The area (A) of a square is calculated as

A = s² ( s is the measure of a side of the square )

Here s = x + 2 and A = 7, thus

(x + 2)² = 7 ← expand left side using FOIL

x² + 4x + 4 = 7 ( subtract 4 from both sides )

x² + 4x = 3 ← as required

4 0

3 years ago

How do i explain this problem<br> -5 + (+4) =

RSB [31]

Answer:

this question is essentially -5 + 4

You could say:

negative 5 plus 4

Just in case you need it, the answer to this problem is -1

May I have brainliest please? :)

7 0

2 years ago

Read 2 more answers

Please help me asap i will mark branlist please explain

Tems11 [23]

It would be the first one (x,-y) because say for example you take the point of v1 (4,-1) and reflect across x axis you get (4,1) for v

7 0

3 years ago