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Sonbull [250]
3 years ago
8

Plz Help ASAP! I will mark Brainliest!

Mathematics
2 answers:
Wewaii [24]3 years ago
3 0
If you have a ruler I can how you a faster why you do this
myrzilka [38]3 years ago
3 0

Answer:

Problem 18: 52°

Step-by-step explanation:

First you should now that 4x° and the 5x° are supplementary angle so they both equal to 180° therefore 4x°+5x°=9x°=180° or 180°=9x then divide by 9 on both sides of the equation and you will get x=20

Now you found x=20 since the only angle you need to solve for is the 4x° since that is the one that is inside the triangle and is needed to solve y°. PLUG IN X in 4x. 4x°= 4(20) then 4x°=80! :D

So now the triangles have the following interior angles 80° and 48°and y. Since the in a triangle the angles MUST add to 180° So put it in together 48+80+y=180 then isolate y or just subtract 48 and 80(y=180-80-48) FROM BOTH SIDES of the equation then the answer would be y=52°

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Pyramid A has a height of 10 feet and a volume of 120 cubic feet. The base of Pyramid B has the same dimensions as Pyramid A but
irakobra [83]

A volume of a pyramid=base area×height/3

both the bases have same dimensions

pyramid B is twice the height of A

therefore the volume is doubled

8 0
3 years ago
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A rectangle has an area of 54 feet. What could be the dimensions of it?
andreev551 [17]

It could  1 x 54, 2 x 27, 3 x 18, or 6 x 9

8 0
3 years ago
Which ordered pair is a solution to the system of inequalities?
xxTIMURxx [149]

Answer:

Option A

Step-by-step explanation:

System of the inequalities is,

y ≥ 2x

y < x + 4

By satisfying these inequalities with the points given in the options we can get the answer.

Option (A). (2, 5)

y ≥ 2x

5 ≥ 2(2)

5 ≥ 4

True.

y < x + 4

5 < 2 + 4

5 < 6

True

Therefore, Option (1) is the answer.

Option (B) (1, 6)

y ≥ 2x

6 ≥ 2(1)

6 ≥ 2  

True.

y < x + 4

6 < 1 + 4

6 < 5

False.

Therefore, it's not the solution.

Option (C) (2, 3)

y ≥ 2x

3 ≥ 2(2)

3 ≥ 4

False.

y < x + 4

4 < 2 + 4

4 < 6

True.

Therefore, It's not the solution.

Option (D) (1, 5)

y ≥ 2x

5 ≥ 2(1)

5 ≥ 4

True.

y < x + 4

5 < 1 + 4

5 < 5

False.

Therefore, It's not the solution.

7 0
3 years ago
Derek says that the quotient of -2/7 divided by -2/21 is -1/3. Part A: What is the correct quotient? Part B: What mistake did De
Thepotemich [5.8K]

Answer:

The correct quotient is 3.

I think Derek has mistaken to divide -\frac{2}{21} by \frac{2}{7}.

Step-by-step explanation:

We have to check the quotient of (-\frac{2}{7})  \textrm{ divided by }(-\frac{2}{21}).

Part A:

Now, (-\frac{2}{7})  \textrm{ divided by }(-\frac{2}{21}).

= \frac{-\frac{2}{7} }{-\frac{2}{21} } =3

So, the correct quotient is 3.

Part B:

Derek says that the quotient is -\frac{1}{3}.  

So, I think Derek has mistaken to divide -\frac{2}{21} by \frac{2}{7}. (Answer)

8 0
3 years ago
Best decimal equivalent to 5/8
Igoryamba
The best decimal equivalent is 10/16
6 0
3 years ago
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