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sergeinik [125]

3 years ago

12

Decrease an integer by 20 w/the correct algebraic expression 2x-20 20-2x X-20 20-x

1 answer:

lubasha [3.4K]3 years ago

8 0

Answer:31200

Step-by-step explanation:

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The area of one rectangle is twice the area of another. What is the ratio of their perimeters

Veronika [31]

Answer:

The answer is 8 units! Hope this helps!

Step-by-step explanation:f the length of any one side of the square is x, then the area is x2, and the perimeter is 4x. If the area is twice the perimeter, x2 = 2(4x), and x2 − 8x= 0. By factoring, we see this equation is equivalent to x(x − 8) = 0, which has solutions 0 and 8. The length cannot be 0, so it must be 8 units.

6 0

3 years ago

Find the value of n such that (-5)-(-7)>(+9)+(n)

Scorpion4ik [409]

Answer:

The answer is n < -7

Step-by-step explanation:

First, you have to move all the numbers to one side:

(-5) - (-7) > 9 + n

-5 + 7 > 9 + n

9 + n < 2

n < -7

(Hope this can help)

4 0

3 years ago

4+2(x-2)=2(x-1)+2<br> which one<br> A. Infinitesolutions<br> B.x=0<br> C.x=3<br> D.x=-2<br> E.x=-3

fredd [130]

Answer:

B

Step-by-step explanation:

8 0

3 years ago

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The captain of a boat knows that a lighthouse on the coast is 100 ft

Tatiana [17]

Answer:

Height of the light house $=7.5\ feet$

Step-by-step explanation:

Distance of light house from boat = 100 ft

Angle of elevation from boat to the top of light house = 2°

Height above water while taking measurement = 4 ft

The figure of the situation is shown below.

For Δ ABC

$\tan2\°=\frac {AB}{BC}$

$\tan2\°=\frac {AB}{100}$

$0.035=\frac {AB}{100}$

Multiplying both sides by 100.

$100\times 0.035=100\times\frac {AB}{100}$

$3.5=AB$

∴ $AB=3.5$

Height of the light house $=3.5+4=7.5\ feet$

3 0

3 years ago

Roll a dice. Chance of it landing on a 6 is ? In ?

ohaa [14]

It is a 1 to 6 ratio

4 0

3 years ago

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