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liraira [26]
3 years ago
8

A study showed that the ratio of the number of people who get their news from social media to the number of people who their new

s elsewhere is 3:7 Based on the ratio, how many people in a town of 800 people get their news from social media
Mathematics
1 answer:
Kitty [74]3 years ago
6 0

Answer: 240 people get the news from social media

Step-by-step explanation:

The ratio of the number of people who get their news from social media to the number of people who their news elsewhere is 3:7

Total ratio is the sum of the proportion of those that get their news from social media and those that got their news elsewhere.

It becomes 3+7 = 10

Total number of people in the town is 800

To determine the number of people that got their news from social media, we will divide the proportion of those that get their news from social media by the total ratio and multiply by the total number of people in the town. It becomes

3/10 × 800 = 240

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kaheart [24]

Answer: 1,596 cubic cm. To find the volume, you need to multiply all the three sides given.


Step-by-step explanation:

12cm * 7 cm* 19cm = 1596 cm^3


4 0
3 years ago
Rewrite the following expression.
faust18 [17]

We have been given the expression

x^{\frac{9}{7}}

We have the exponent rule

x^{\frac{a}{b}}= x^{a^{(\frac{1}{b})}}

Using this rule, we have

x^{\frac{9}{7}}= x^{9^{(\frac{1}{7})}}

Now, using the fact that x^{\frac{1}{n}}=\sqrt[n]{x}, we get

x^{\frac{9}{7}}= \sqrt[7]{x^9}\\
\\
x^{\frac{9}{7}}=\sqrt[7]{x^7\times x^2}\\
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x^{\frac{9}{7}}=x\sqrt[7]{x^2}

D is the correct option.

6 0
3 years ago
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Which function has the domain x greater-than-or-equal-to negative 11?
alukav5142 [94]

Answer: A

Step-by-step explanation:

6 0
3 years ago
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What are the solutions to the equation 3(x – 4)(x + 5) = 0?
iris [78.8K]

Answer:

x=4 and x= - 5

Step-by-step explanation:

In order to solve this we should re-arrange the equation:

(x-4)(x+5)=\frac{0}{3}

This is equal to:

(x-4)(x+5)=0

Then we can seperate this into:

(x-4)=0\\(x+5)=0

So solving for x in both cases we get

x-4=0 \\x=4\\And\\x+5=0\\x=-5\\

4 0
3 years ago
Answer part A, B, and C. (28 points)
mart [117]

A)

Two sides are 8 x 2 = 16 x 2 = 32 sq. in.

Two sides are 11 x 2 = 22 x 2 = 44 sq. in.

Top is 8 x 11 = 88 sq. in.

Total surface area: 32 + 44 + 88 =  164 square inches.

B) Area of a circle = PI x r^2

Area = 63.585

63.585 = PI x r^2

Using 3.14 for PI:

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Divide both sides by 3.14:

r^2 = 63.585 / 3.14

r^2 = 20.25

r = √20.25

radius = 4.5 inches.

C)

Diameter = radius x 2

Diameter = 4.5 x 2 = 9 inches.

3 0
3 years ago
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