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PSYCHO15rus [73]
3 years ago
14

Sevens sixteenths of the children smirked when they heard the joke. If 210 children smirked, how many children heard the joke?

Mathematics
2 answers:
cestrela7 [59]3 years ago
5 0
7/16 total = 210
Method 1 (the fast method):
(invert 7/16)
16/7 x 210 = 480

Ans: 480

Method 2 (the other method):
7/16 total = 210
1/16 total = 210/7 = 30
16/16 total = 16x30 = 480

Ans: 480



cupoosta [38]3 years ago
3 0
Take 716 minus by 210 you going to see a much the children joke
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Kate has 48 softballs. She wants to divide them evenly among b softball bags. Which expression represents how many softballs she
Makovka662 [10]

Answer:

A

Step-by-step explanation:

48 softballs

Divided among b bags

Divide 48 by b

48 ÷ b

Division expressions can also be written as fractions

Rewrite

48/b

The correct answer is A, 48/b

Hope this helps :)

8 0
3 years ago
7. Write an equation for the line that is parallel to the given line and that passes through the given point.
Vlad1618 [11]

Answer:

C. y = 1/2x - 14

Step-by-step explanation:

Find the slope of the original line and use the point-slope formula  y − y 1 = m ( x − x 1 )  to find the line parallel to  y = 1 /2 x − 8 .

y = 1 /2 x − 14                              PARALLEL

...................................................................................................................................................

Find the negative reciprocal of the slope of the original line and use the point-slope formula  y − y 1 = m ( x − x 1 )  to find the line perpendicular to  y = 1 /2 x − 8 .

y = − 2 x − 29                               PERPENDICULAR

8 0
2 years ago
(GEOMETRY), please help meee
Dmitry [639]

14. Trick question, ignore the side.


Call the angle b.


34 + b + b = 180


2b = 146


b = 73


choice b


15. That's intersecting chords so the product of the segment lengths are equal:


5(22)=10 x


x = 5(22)/10 = 11


choice a


16. Intersecting tangent and secant;


x^2 = 5(19)


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5 0
3 years ago
Find the margin of error for the given values of c, o, and n.
Alika [10]

Using the z-distribution, it is found that the margin of error is of 0.059.

We are given the standard deviation for the population, hence the <em>z-distribution</em> is used.

<h3>What is the margin of error for a z-confidence interval?</h3>

It is given by:

M = z\frac{\sigma}{\sqrt{n}}

In which:

  • z is the critical value.
  • \sigma is the population standard deviation.
  • n is the sample size.

In this problem, the parameters are:

  • \sigma = 0.25, n = 49.
  • Confidence level of 0.90, hence, using a z-distribution calculator, the critical value is z = 1.645.

Then:

M = z\frac{\sigma}{\sqrt{n}}

M = 1.645\frac{0.25}{\sqrt{49}}

M = 0.059

The margin of error is of 0.059.

You can learn more about the z-distribution at brainly.com/question/12517818

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2 years ago
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irinina [24]

Answer:

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Step-by-step explanation:

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