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katovenus [111]
3 years ago
12

Please help me only do 5-7

Mathematics
1 answer:
Monica [59]3 years ago
8 0

Answer:

5. n = 135

6. n = 3

7.  214

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-2x-+5x-9<br> 3x-13<br> simplify the expression
tresset_1 [31]

Answer:

(-2x)-5x-9 = (-7x)-9

3x - 13 = 3x - 13 (you cannot simplify more)

Your question was wery wierd but i tried to answer best I could.

And also I dont know what you mean about "-+5"

5 0
3 years ago
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PLS HELP ASAP !!!!!!!!!!!
NemiM [27]

Answer:

with what?

Step-by-step explanation:

5 0
3 years ago
Which of the following is a solution of the linear equation 4x + 3y = 16? * (1, 4) (2, 3) (1, 3) (2, 4)
rosijanka [135]

Answer:

(1,4)

Step-by-step explanation:

if u substitute these numbers u can find out that these numbers make the solution.

hope this helps

8 0
3 years ago
If anybody answers these questions I will get them brainliest and if somebody else verifies that it is the correct answer I can
valina [46]

Part (a)

<h3>Answer: x^3 + 12x^2 + 47x + 60</h3>

--------------------------

Work Shown:

Let's say we have

  • L = length = x+5
  • W = width = x+4
  • H = height = x+3

To find the volume of the block, we multiply the length width and height.

So,

volume = (length)*(width)*(height)

V = L*W*H

V = LW*(x+3) .... replace H with (x+3)

V = LW*x + LW*3 .... distribute

V = Lx*(W) + 3L*(W)

V = Lx(x+4) + 3L(x+4) .... replace W with x+4

V = Lx^2 + 4Lx + 3Lx + 12L .... distribute

V = Lx^2 + 7Lx + 12L

V = x^2*(L) + 7x*(L) + 12*(L)

V = x^2*(x+5) + 7x*(x+5) + 12*(x+5) .... replace L with x+5

V = x^3 + 5x^2 + 7x^2 + 35x + 12x + 60 .... distribute

V = x^3 + 12x^2 + 47x + 60

x^3 + 12x^2 + 47x + 60 is the polynomial in standard form that represents the volume of the block.

=======================================================

Part (b)

<h3>Answer: 336 cubic feet</h3>

--------------------------

Work Shown:

We can plug x = 3 into the polynomial we found

V = x^3 + 12x^2 + 47x + 60

V = (3)^3 + 12(3)^2 + 47(3) + 60

V = 27 + 12(9) + 47(3) + 60

V = 27 + 108 + 141 + 60

V = 336

Or we could find the volume like this

V = L*W*H

V = (x+5)*(x+4)*(x+3)

V = (3+5)*(3+4)*(3+3)

V = (8)*(7)*(6)

V = 336

Either way, we get the same volume of 336 cubic feet.

3 0
3 years ago
What is 1/2 of 2 3/4?
luda_lava [24]

Answer:

1 3/8

Step-by-step explanation:

First, change the mixed fraction to improper fraction.

2 3/4 = 8/4 + 3/4 = 11/4

1/2 of 11/4 = (11/4)(1/2) = 11/8

11/4 - 11/8 = 22/8 - 11/8 = 11/8

11/8, or 1 3/8 is your answer.

~

5 0
3 years ago
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