MATHEMATICS MIDDLE SCHOOL

If x to the 2nd power =20 what is the value of x

Answers

Answer 1
Answer: x= 4.47213595 Is the answer to the question just round to the nearest 10th
Answer 2
Answer:

Answer:

4.47 and -4.47 ( to nearest hundredth)

Step-by-step explanation:

x^2 = 20

x = +/- sqrt 20

=  +/- sqrt 4* 5

= +/- 2 sqrt5

= +/- 4.47  to nearest hundredth

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A triangle has a base of 4 units and a height of 3 units. Mark draws the triangle again but doubles the height. How does the area of the triangle change?

Answers

Answer:

It doubles the area.

Step-by-step explanation:

The formula for the area of a triangle is a = bh/2. So, if we plug in the first triangle, you get a = 6. With the second triangle, the height is being doubled. We can represent this with the equation:

4 × 3 × 2/2

Both 2s cancel each other out, leaving us with a = 12. 12/6 is 2. Therefore, doubling the height will ALWAYS double the area.

Answer: The answer is B, please mark me brainliest.
Thank you.

Step-by-step explanation:

Which is greater? 0.7 or -1?

Answers

.7 is greater because it's a positive and not a negative.
.7 becasue it is a positive and -1 is a negative that us bellow zero

9.9g of sugar is needed for every cake made. How much sugar is needed for 8 cakes?

Answers

Answer:

79.2 g of sugar is needed.

Step-by-step explanation:

9.9 times 8 is 79.2.

You can prove this by dividing 79.2 by 8 and you will get 9.9 as the answer.

Answer:

See answer below

Step-by-step explanation:

Hi there,

Get started by developing a relationship between the amount of sugar for 1 cake. We can use dimensional analysis to solve this.

(9.9 \ g \ sugar)/(1 \ cake)

Now, we know that we need 8 cakes. We put 1 cake on the bottom of the fraction so that it cancels out with the 8 cakes unit:

(9.9 \ g \ sugar)/(1 \ cake)* \ 8 \ cake = 9.9 g \ sugar * 8 = 79.2 g \ sugar

thanks,

Solve for y. 1/2y + 5-3/4y=0

Answers

Answer:

Y=20

Step-by-step explanation:
Y=20 if you add then subtract

Which number is the reciprocal of 1/6?A.- 1/6


B.0




C.6




D.12

Answers

\hbox{reciprocal of } a=(1)/(a)\n a=(1)/(6)\n (1)/(a)=(1)/((1)/(6))=1\cdot6=6 \Rightarrow C
reciprocal is where you flip the fraction so 1/6 becomes 6/1
C. 6

Which of the following best describes the vegetation in North Dakota (ND)?A.
broadleaf forest

B.
tundra

C.
grassland

D.
desert

Answers

C-  grassland  , hope this helps:)

Answer:

Step-by-step explanation:

D
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