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vazorg [7]
1 year ago
12

PLEASE HELP "

Mathematics
1 answer:
UNO [17]1 year ago
5 0

Considering the perimeter concept, we have that:

  • Danielle's mistake is that she did not consider two outside edges, one of length 6x - 4 and the other of length 12x + 3.
  • The correct perimeter, in feet, is: P = 50x + 27.

<h3>What is the perimeter of a polygon?</h3>

The perimeter of a polygon is given by the sum of all the lengths of the outside edges of the polygon.

For this problem, the outside edges are given as follows:

  • 2 of 6x - 4, due to the isosceles triangle.
  • 2 of 12x + 3, due to the rectangle.
  • 1 of 14x + 13, also due to the rectangle, and only one, because of the other part of the rectangle with the same length is internal to the prism;

Danielle's mistake is that she did not consider two outside edges, one of length 6x - 4 and the other of length 12x + 3. Considering all the edges, the perimeter is given by:

P = 2(6x - 4) + 2(12x + 3) + 14x + 13

P = 12x - 8 + 24x + 6 + 14x + 13

P = 12x + 24x + 14x + 8 + 6 + 13

P = 50x + 27.

More can be learned about the perimeter of a polygon at brainly.com/question/3310006

#SPJ1

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Leah has two savings accounts with balances totaling $8,000. She withdrew 15% from one and
DedPeter [7]

Answer:930 Hope this Helps :D

Step-by-step explanation:

For the given problem:

Let the balances of the saving accounts be (x) and (y)

Leah has two savings accounts with balances totaling $8,000

so,

x+y=8000 (1)

She withdrew 15% from one and 40% from the other. If she has $6,350 remaining in the accounts

So, The remaining from the accounts will be (1 - 15%) and ( 1 - 40%)

that will give the decimals: 0.85 and 0.6

so, we can write the following equation:

0.85x+0.6y=6350 (2)

Now, solve the equations (1) and (2) to find (x) and (y)

From equation (1)

y=8000-x (3)

Substitute with (y) from equation (3) into equation (2)

0.85x+0.6*(8000)-x =6350

Now solve the equation

0.85x+0.6*8000-0.6x=6350

0.85x-0.6+4800+6350

0.25x=6350-4800

0.25x=1550

x=6200

Substitute with (x) into equation (3) to find (y)

y=8000-6200=1800

So, the larger account = x = 6200

and the smaller account = y = 1800



Now, we will answer the question, how much money did she withdraw from the account with the larger balance?

so, the answer will be: 15% of x = 0.15 * 6200 = 930



So, the answer will be $930

6 0
2 years ago
easch cube inside the rectangle prism has a edge length of 3/4 inch what is the volume of the rectangle prism
vfiekz [6]

Volume = (edge)^3

Volume = (3/4)^3

Volume = (27/64) inches^3

Done.

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I think the answer is A
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