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3 years ago

10

A survey showed that 75% of middle school students have at least one sibling. If Mrs.McCall has a total of 72 students, how many

would you expect to have at least one sibling?

1 answer:

Jlenok [28]3 years ago

8 0

<em>54 people have at least one sibling.</em>

steps;

1) figure out what it would be in if a decimal ex; 0.75 (75%) is in the hundredths place.

2) divide 75 by 100.

3) times 0.75 by 72.

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tyler read 15 pages of a book. Ann read 9 pages of the same book. Did Tyler read 4 more pages than Ann? Explain

Slav-nsk [51]

No because fifteen minus nine is six, so Tyler read six more pages than Ann.

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3 years ago

The exterior angle of a regular polygon is 36º.<br> How many sides does the polygon have?

Mrac [35]

Answer:

10

Step-by-step explanation:

The sum of the measures of the exterior angles in a convex polygon is 360°. And each exterior angle measure 36 degrees so Number of side will be 10.

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3 years ago

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TEA [102]

Answer:

452.16

Step-by-step explanation:

the equation is A=nr^2

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3 years ago

Please help me! And please no scam answers

Yuri [45]

Answer:

Average rate of change: $-3$

Step-by-step explanation:

<u>Remember:</u>

The average rate of change of a function over an interval $[a,b]$ is $\frac{f(b)-f(a)}{b-a}$

<u>Given:</u>

$[a,b]=[1,7]$

$f(b)=f(7)$

$f(a)=f(1)$

<u>Calculation:</u>

$f(b)=f(7)=-(7)^2+5(7)+14=-49+35+14=-49+49=0$

$f(a)=f(1)=-(1)^2+5(1)+14=-1+5+14=4+14=18$

$\frac{f(b)-f(a)}{b-a}=\frac{0-18}{7-1}=\frac{-18}{6}=-3$

Therefore, the average rate of change of the function $g(x)=-x^2+5x+14$ over the interval $1\leq x\leq7$ is $-3$ .

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3 years ago

Write each fraction as a decimal. round to the nearest hundredth if necessary.

SashulF [63]

Answer:

0.375

1.4

3

1.66666666667

Step-by-step explanation:

Divide the numerator (top number) by the denominator (bottom).

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4 years ago

Read 2 more answers