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3 years ago

If x powered by 2= 20 what is the value of x ?

Mathematics

2 answers:

laila [671]3 years ago

8 0

Answer:

x = 10

Step-by-step explanation:

10^2= 20, therefore

Mashutka [201]3 years ago

3 0

Answer:

x = ± 2 $\sqrt{5}$

Step-by-step explanation:

Given

x² = 20 ( take the square root of both sides )

x = ± $\sqrt{20}$ = ± $\sqrt{4(5)}$ = ± $\sqrt{4}$ × $\sqrt{5}$ = ± 2 $\sqrt{5}$

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Can someone please explain how to figure this out?!!

Keith_Richards [23]

It’s basically the opposite just switch it and put the 5/t now

4 0

3 years ago

A rectangle has a height of 3n^2 and a width of 4n^2-5n-1.

Galina-37 [17]

Answer:

$A = 12n^4-15n^3-3n^2$

Step-by-step explanation:

The dimensions of a rectangle are length and breadth/width

Here we are given height . Assuming it to be one of the side of the rectangle , we will do the further calculation

Hence one side is

side 1 = $3n^2$

And the other side is

Side 2 = $4n^2-5n-1$

The area of rectangle = side 1 x side 2

$A=3n^2 \times (4n^2-5n-1)$

$A=3n^2 \times 4n^2-3n^2 \times 5n-3n^2 \times 1$

$A=3 \times 4 \times n^2 \times n^2- 3 \times 5 \times n^2 \times n - 3n^2$

$A = 12n^4-15n^3-3n^2$

Hence area can be given as expression

$A = 12n^4-15n^3-3n^2$

5 0

3 years ago

The product (5x+8-6x)(4+2x-7)

Mashutka [201]

Answer:

(8 - x) • (2x - 3)

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

20 Points, Brainliest, 5 stars, and <3 if you answer correctly:

trasher [3.6K]

Answer:

3 hours: 38,250

1 day: 122,440

I’m not sure if this is exactly right, my brain gave out half way. Someone check my answer pls

Step-by-step explanation:

3 hours: 3 x 60= 900

900 divided by 20= 450

450 x 85 = 38,250

1 day: 24 x 60 = 1440

1440 x 85 = 122,440

4 0

3 years ago

Read 2 more answers

coffee worth 90 cents per pound is mixed with coffee worth 60 cents per pound ro produce a twenty pound blend worth 72 cents per

Evgesh-ka [11]

90x+60y=72
60y=-90x+72
y=-1.5x+1.2

then create a graph using this formula.

Hope this helps!

8 0

3 years ago