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Ratling [72]
3 years ago
14

Please help this is due today and. I need to get it done fast!!!

Mathematics
1 answer:
Maru [420]3 years ago
3 0

Answer:

x = 16.5

Step-by-step explanation:

The best way to solve this is to use cross multiplication.

\frac{3}{x} = \frac{4}{22}

4 * x = 4x

22 * 3 = 66

Your equation is 66 = 4x.

Divide both sides by 4.

66/4 = 16.5

4x/4 = x.

16.5 = x.

Therefore, your answer is 16.5.

I hope this is helpful!

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PLZZ HELPPP!!! Each edge of a wooden cube is 6 centimeters long. The cube has a density of 0.71 g/cm3
Lana71 [14]

Answer:

153.36g

Step-by-step explanation:

Density is defined as the ratio of mass per unit volume of a material.

Density = Mass/Volume

Given the edge of a cube which is equivalent to its length L to be 6cm.

Density of the cube = 0.71g/cm³

Volume of the cube = L³

Volume = 6³

Volume of the cube = 216cm³

Mass = Density × Volume

Mass of the cube = 0.71×216

Mass of the cube = 153.36grams

4 0
3 years ago
Read 2 more answers
3) A semicircle is attached to the side of a rectangle as shown.
m_a_m_a [10]
Rectangle = 18 x 6 = 108
Circle:  3.14 x (3)^2 = 3.14 x 9 = 28.26
<span>semicircle: 28.26 / 2 = 14.13
</span>
108 + 14.13 = 122.13

answer
122.13 cm^2

3 0
3 years ago
Read 2 more answers
Help me please.<br><br> Rounding questions.
ehidna [41]

Step-by-step explanation:

a) 6400

b) 4800

c) 32000

hope this answer helps you dear!

3 0
2 years ago
Which describes the first step in solving the equation 4x - 7 = -15?
GalinKa [24]

Answer:

Add 7 to both sides

Step-by-step explanation:

You would need to add 7 to both sides to cancel out the 7 on the right side of the equation to get x one step closer to being by itself.

Then you would get 4x = -8.

Next divide by 4 on both sides to get x by itself so do the inverse operation of what 4 was doing to x.

x = -2

7 0
2 years ago
In 1950, scientist estimated a certain animal population in a particular geographical area to be 6400 in 2000, the population ha
irina1246 [14]

Answer:

8,100

Step-by-step explanation:

7,200 - 6,400 = 800 increased in 50. Years

What percentage is 800 of 6,400 (%/100 = is/of)

x/100 = 800/6400 (cross multiply)

(800*100)/6400 = 12.50%

(12.50 * 7200)/100 = 900 increased

7,200 + 900 = 8,100

7 0
2 years ago
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