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klemol [59]
3 years ago
6

The figure shows the front side of a metal desk in the shape of a trapezoid.

Mathematics
2 answers:
Hitman42 [59]3 years ago
8 0

Answer:

<u><em>The area of the trapezoid is 16 feet² ⇒ 2nd answered</em></u>

I hope this helps d:

Alenkinab [10]3 years ago
6 0

Answer:

Area of trapezoid is 16ft^2.

Therefore, option 2nd  is correct.

Step-by-step explanation:

We have been given both the sides a=3 and b=5.

And height that is h=4

We will use the formula find the area of trapezoid is:

\frac{a+b}{2}\cdot h

Substitute the formula we get:

\frac{3+5}{2}\cdot 4

\Rightarrow \frac{8}{2}\cdot 4

\Rightarrow 16.

Area of trapezoid is 16ft^2.

Therefore, option 2nd  is correct.

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Suppose you have an experiment where you flip a coin three times. You then count the number of heads. a.) State the random varia
coldgirl [10]

Answer:

The answer to each point is below

Step-by-step explanation:

We will solve point by point:

a)  We have to:

Random variable X = number of heads

Let, H => heads, T => tails

b) We have that the combinations are

TTT, TTH, THT, THH, HTT, HTH, HHT, HHH

Number of Heads (X)  0     1      2     3

Probability (P)             1/8   3/8  3/8   1/8

c) attached the histogram.

d)  We have the following:

Mean = E (X) = 0 * 1/8 + 1 * 3/8 + 2 * 3/8 + 3 * 1/8

m = 1.5

The mean is 1.5

e) E (X ^ 2) = 0 * 1/8 + 12 * 3/8 + 22 * 3/8 + 32 * 1/8 = 3

Variance = E (X ^ 2) - (E (X)) ^ 2

Var = 3 - (1.5) ^ 2

Var = 0.75

The variance is 0.75

f) standard deviation = (Var) ^ (1/2) = (0.75) ^ (1/2) = 0.866

sd = 0.866

the standard deviation is 0.866

g) P (2 or more heads) = 3/8 + 1/8 = 0.5

The probability is 50%

h)  P (two heads) = 3/8 = 0.375

It is likely that out of 8 times of 3 flips, 3 times we can observe two heads out of 3, therefore it is not unusual.

6 0
3 years ago
What is the answer to this problem
Svetlanka [38]
Answer: P = $47,120.53
4 0
2 years ago
¿Can i get the answer?
NikAS [45]

Answer:

15.7

Step-by-step explanation:

5 x 3.14(pi) = 15.7

3 0
3 years ago
Can someone please help me with number 6?
Vlad1618 [11]

Step-by-step explanation:

substitute a with 2 and b with 3

2x+3

because it's the same equation it should just be an equal sign.

8 0
2 years ago
Read 2 more answers
Value of (–3/8) × (+8/15). <br><br> A. 11/15<br> B. 11/23<br> C. –1/5<br> D. –1/3
svet-max [94.6K]

ANSWER

The correct answer is C

EXPLANATION

We want to find the value of

- \frac{3}{8}   \times  \frac{8}{15}

This is the same as:

-  \frac{3}{8}  \times  \frac{8}{3 \times 5}

We cancel out the common factors to get:

-  \frac{1}{1}  \times  \frac{1}{1 \times 5}

We simplify to get:

-  \frac{1}{5}

The correct answer is C

5 0
3 years ago
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