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3 years ago

What have I done wrong and where please help me

Mathematics

1 answer:

lys-0071 [83]3 years ago

6 0

12x - 18 - 4x -2
12x - 4x = 8x (yours 12x - 4x = 8)
-18 - 2 = -20 (yours -18 -1 = 17)

answer:

8x - 20

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Question 1 (5 points)

Mila [183]

Answer:

AB and CD would be 30

AC and BD would be 16

Step-by-step explanation:

The scale factor is what you multiply the sides by. Dilate means wider or larger so you multiply each side by the scale factor of 2 to get the higher scaled rectangle.

6 0

2 years ago

Jenna and Richie go shopping at the mall to buy their mom a present they buy a scarf for $12.45 and a necklace for $35.65 their

padilas [110]

Answer:

The tax Jenna and Richie pay on the gifts is $3.85.

Step-by-step explanation:

Given:

Cost of scarf = $12.45.

Cost of necklace = $35.65.

State tax charges sale tax = 8%.

Now, to find the sales tax paid on the gifts.

So, adding the price of the gifts:

$12.45+35.65=48.10$

Thus, the total amount of the gifts = $48.10.

Now, getting the sales tax the state charges:

$8\%\ of\ 48.10$

$=\frac{8}{100}\times 48.10$

$=0.08\times 48.10$

$=3.848$

The tax nearest to cent = $3.85

Therefore, the tax Jenna and Richie pay on the gifts is $3.85.

5 0

3 years ago

I need help, I’ve been stuck on this question plz

bezimeni [28]

Answer:

when distributing the first equation 1/4(8y+24) it is actually 2y+6 because 1/4*24= 6 not 8

Step-by-step explanation:

5 0

3 years ago

A flagpole broke in a storm. It was originally 81 8181 feet tall. 28 2828 feet are still sticking straight out of the ground, wh

solong [7]

Answer:

The end of the flagpole is 50.79 ft away from the base of the pole.

Step-by-step explanation:

The problem is represented by the diagram below.

The broken flagpole forms the shape of a right angled triangle. We need to find one of the sides of the triangle, the adjacent (x).

The hypotenuse is the broken part of the flagpole (53 ft), while the opposite is the part of the flagpole that is still stuck to the ground (28 ft).

Using Pythagoras theorem, we have that:

$hyp^2 = adj^2 + opp^2$

=> $53^2 = x^2 + 28^2$

$3364 = x^2 + 784\\\\=> x^2 = 3364 - 784\\\\x^2 = 2580\\\\x = \sqrt{2580}\\ \\x = 50.79 ft$

The end of the flagpole is 50.79 ft away from the base of the pole.

7 0

3 years ago

What is the volume of the metal in this heavy-duty pipe? (It is not drawn to scale and the inside of the pipe is empty space.) S

Jlenok [28]

The volume of the pipe is about 282.6 cubic feet.

First, we need to find the area of each circular cross section and subtract them to find the width of the pipe. The area of a circle is pi(r^2).

pi(3^2) - pi(2^2)
28.26 - 12.56 = 15.7

The width of the pipe is 15.7. Now, multiply that by 18 to find the volume.
15.7 x 18 = 282.6

6 0

3 years ago