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3 years ago

Question 4 pls thanks, I will mark Brainliest

Mathematics

1 answer:

xxTIMURxx [149]3 years ago

6 0

the second one.

Step-by-step explanation:

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Use a net to find the surface area of the prism.

lawyer [7]

The surface area of the prism will be given by:
SA=2(L×W)+2(L×H)+2(H×W)
SA=2(12×5)+2(12×9)+2(5×9)
SA=120+216+90
SA=426m²

Answer: 426m²

5 0

3 years ago

The area of the rectangle shown is 200 square units. Find the volume of x

VladimirAG [237]

Answer:

200/5=40

40/2=20+5=25

25x8=200

40 is X.

Step-by-step explanation:

3 0

3 years ago

CAN SOMEONE HELP ME WITH THIS PLEASE AND THANK YOU.

Mariana [72]

Answer:

11 2/3

Step-by-step explanation:

2 1/3 * 5

Change the mixed number to an improper fraction

2 /13 = ( 3*2+1)/3 = 7/3

7/3 * 5/1

35/3

Now change it back to a mixed number

3 goes back into 35 11 times with 2 left over

11 2/3

8 0

2 years ago

Read 2 more answers

Solve this inequality 3q - 6 > 21

erica [24]

3q - 6 > 21

3q > 27

q > 9

6 0

2 years ago

Read 2 more answers

What are the real zeros of x^3+4x^2-9x-36

Katyanochek1 [597]

Answer:

$x = -4\\x = -3\\x = 3$

Step-by-step explanation:

To find the real zeros you must match the function to zero and factor the expression.

We have a polynomial of degree 3.

We try to group the terms to perform the factorization

$x ^ 3 + 4x ^ 2-9x-36 = 0\\\\x ^ 2(x + 4) - 9(x + 4) = 0$

Now we take (x + 4) as a common factor

$(x + 4)(x ^ 2 -9) = 0$

If we have an expression of the form $(a ^ 2-b ^ 2)$ we know that this expression is equivalent to:

$(a ^ 2-b ^ 2) = (a + b)(a-b)$

In this case

$a = x\\b = 3$

So:

$(x ^ 2 -9) = (x + 3)(x-3)$

Finally:

$x ^ 3 + 4x ^ 2-9x-36 = (x + 4)(x + 3)(x-3) = 0$

The solutions are:

$x = -4\\x = -3\\x = 3$

6 0

3 years ago