15 : The world population in 2010 was approximately 6.92 billion.

Mathematics

1 answer:

Viefleur [7K]3 years ago

7 0

A number that can be written

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Write the equation you would need to solve to find the horizontal distance each beam is from the origin

anzhelika [568]

Answer:

the red line: $y\ =\ \sqrt{900-x^{2}}$

the black line: $y=\frac{1}{27.5}x^{2}+15$

Below the graph.

6 0

3 years ago

Perimeter with radius 14

nevsk [136]

$360^o-150^o=210^o\\\\\dfrac{210^o}{360^o}=\dfrac{7}{12}$

$P_{LQM}=\dfrac{7}{12}\cdot2\pi\cdot14=\dfrac{7}{3}\pi\cdot7=\dfrac{49\pi}{3}\ cm$

$P_{QRP}=\dfrac{1}{2}\cdot14\pi=7\pi\ cm$

$P_F=\dfrac{49\pi}{3}+7\pi+3\cdot14\approx\dfrac{49}{3}\cdot\dfrac{22}{7}+7\cdot\dfrac{22}{7}+42=166\dfrac{2}{3}\ cm^2$

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3 years ago

a student scored 78 and 95 on his first two quizzes. Use a compound inequality to find the possible values for a third quiz scor

kicyunya [14]

He gets an average between 80 and 90
It is between these two values
So it could be 80 or higher but it must be 90 or belowe so it can be equal to 80 or above and it can be equal to 90 or below
This gives two inequalities 80 ≤ x and x ≤ 90
This can be written as 1 inequality 80 ≤ x ≤ 90
≤ this means less than or equal to the one that points the opposite way would be greater than or equal to think of it as a number line pointing right is positive meaning the numbers get bigger, getting greater pointing left is getting smaller so it gets less and less

5 0

3 years ago

Three students have already enrolled for a creative writing class. The teacher will cancel the class if there are fewer than 10

JulijaS [17]

Answer:

7, 10 and 15

Step-by-step explanation:

Given

$S_1= 3$ --- Students already enrolled