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mr_godi [17]
3 years ago
7

The difference between the square roots of a number is 30. What is the number?

Mathematics
1 answer:
aksik [14]3 years ago
5 0
If x is the number,

\sqrt{x} -(- \sqrt{x} )=30

(The difference or distance between two numbers is the larger one minus the smaller one.)

2 \sqrt{x} =30 \\  \sqrt{x} =15 \\ (\sqrt(x))^2=15^2 \\ x=225
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27x^2y^4÷16yz^4×8z÷9xy^4
arlik [135]

I think that the answer is 3x/2yz^3 because I did [(27x^2y^4/16yz^4)*(8z/9xy^4)].

8 0
4 years ago
3 times an unknown number is 21. Find the unknown number. The unknow number is
Vinvika [58]

Answer:

The answer is 7

Step-by-step explanation:

Because 7 times 3 will give you 21, just divide 21 by 3.

7 0
3 years ago
Read 2 more answers
El área de la región rectangular es 4400cm2. Calcula el valor de m
Roman55 [17]

Answer:

m=52.17

Step-by-step explanation:

<em>The complete question in Spanish is</em>

El área de la región rectangular es 4400 cm2. Calcular el valor de m

largo :2m-20

ancho: m

<em>The question in English is</em>

The area of the rectangular region is 4400 cm2. Calculate the value of m

length :2m-20

width: m

we know that

The area of a rectangle is equal to

A=LW

where

L is the length

W is the width

we have

A=4,400\ cm^2

L=(2m-20)\ cm

W=m\ cm

substitute in the formula the given values and solve for m

4,400=(2m-20)m

Distribute in the right side

4,400=2m^2-20m

2m^2-20m-4,400=0

Solve the quadratic equation by graphing

Using a graphing tool

The solution is m=52.17  (the positive value is the solution)

see the attached figure

8 0
3 years ago
Plz read the directions! Write a proper answer! Thx!
OleMash [197]

Answer:

Step-by-step explanation:

<u>For visible light:</u>

-We can see it. We use visible light to see everything around us, with our eyes at least.

-Visible light has a lower energy than UV light. UV light is what gives us sunburn.

<u>For both:</u>

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<u>For UV light:</u>

-UV light is very high in energy relative to visible light. Visible light doesn't give us sunburn, but UV light will. This is what we use in tanning beds.

-UV light cannot be seen with our eyes because it does not fall into the same category as visible light.

8 0
3 years ago
An angle measures 9.8° more than the measure of its complementary angle. What is the measure of each angle?
Murljashka [212]

Answer:

The measure of the angles would be 40.1 degrees and 49.9 degrees.

Step-by-step explanation:

Complementary angles add up to 90 degrees together.

90 - 9.8 = 80.2

80.2 / 2 = 40.1

Angle 1 = 40.1

Angle 2 = 40.1 + 9.8 = 49.9

Check:

40.1 + 49.9 = 90

5 0
4 years ago
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