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2 years ago

Which of these polygons are congruent?

Mathematics

2 answers:

inessss [21]2 years ago

6 0

Answer: E and H i believe

Step-by-step explanation:

stira [4]2 years ago

3 0

E and h are congruent!

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A boy is building a pyramid out of building blocks. He puts 20 blocks in the first row, then he puts 19 blocks in the row above,

rjkz [21]

Answer:

<h3>The answer is 206 I believe</h3>

8 0

3 years ago

PLEASE HELP ME ASAP

goblinko [34]

Answer:

20.04 units

Step-by-step explanation:

The diagram shows right triangle ABC. Use the definition of the cosine:

$\cos \angle C=\dfrac{\text{Adjacent leg}}{\text{Hypotenuse}}\\ \\\cos \angle C=\dfrac{BC}{AC}\\ \\\cos 51^{\circ}=\dfrac{BC}{27}\\ \\BC=27\cdot \cos 51^{\circ}\\ \\BC\approx 20.04\ units$

3 0

3 years ago

9.4 The heights of a random sample of 50 college stu- dents showed a mean of 174.5 centimeters and a stan- dard deviation of 6.9

gladu [14]

Answer: a) (176.76,172.24), b) 0.976.

Step-by-step explanation:

Since we have given that

Mean height = 174.5 cm

Standard deviation = 6.9 cm

n = 50

we need to find the 98% confidence interval.

So, z = 2.326

(a) Construct a 98% confidence interval for the mean height of all college students.

$x\pm z\times \dfrac{\sigma}{\sqrt{n}}\\\\=(174.5\pm 2.326\times \dfrac{6.9}{\sqrt{50}})\\\\=(174.5+2.26,174.5-2.26)\\\\=(176.76,172.24)$

(b) What can we assert with 98% confidence about the possible size of our error if we estimate the mean height of all college students to be 174.5 centime- ters?

Error would be

$\dfrac{\sigma}{\sqrt{n}}\\\\=\dfrac{6.9}{\sqrt{50}}\\\\=0.976$

Hence, a) (176.76,172.24), b) 0.976.

8 0

2 years ago

A car rental agency advertised renting a car for $ 23.95 per day and $ 0.32 per mile. If Trevor rents this car for 3 days, how

AVprozaik [17]

Y=mx +b plug that in , so the 23.95 would be the flat fee then you add 0.32
250 =23.95+0.32 subtract from both sides then divide the answer is 10 miles

4 0

2 years ago

Read 2 more answers

A group of 48 senior citizens attended a baseball game. The number of women in attendance was 12 more than the number of men. Ho

Sergio [31]

Answer:

18 men attended the baseball game, and 30 women attended the baseball game.

Step-by-step explanation:

Let the number of men in attendance be x and the number of women in attendance be x+12.

No. of men + <em>No. of women</em> = <u>48 </u>

x +<em> x + 12</em> = <u>48</u>

2x + 12 = 48

2x = 48 - 12

= 36

x = 36 ÷ 2

x = 18

x+12: 18 + 12 = 30

7 0

2 years ago

Read 2 more answers