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3 years ago

What is the surface area of the square pyramid?

Mathematics

1 answer:

wel3 years ago

3 0

Ok to start you need to break this into a net in your head. Next, calculate each triangle
(6*7)/2 = 21
Then, multiply each triangle by the amount of them.
21*4 = 84
Next, get the area of the square.
7*7 = 49
Lastly, add the triangles and the square up.
49 + 84 = 133

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What number is least likely to be represented by -4.5.

elena55 [62]

My answer is should: increase of 4.5

......................
P.S..If you have options then it's better................

8 0

4 years ago

Solve for x <img src="https://tex.z-dn.net/?f=8%20%7B%7D%5E%7B2%20%2B%20x%7D%20%20%20%2B%202%20%7B%7D%5E%7B3x%7D%20%20%3D%203

Stella [2.4K]

Answer:

8^2+x + 2^ 3x = 32^ 1/2

2^3(2+x) + 2^3x = 2^5^1/2

All two's will cancel out

3(2+x) + 3x = 5^1/2

6+3x + 3x = 5^1/2

6 +6x = 2.23

6x = 2.23 - 6

6x = -3.77

x = -3.77÷ 6

x = -0.63

7 0

3 years ago

suppose you want to determine the distance d that light travels in h hours. the speed of light is approximatley 670,616,629 mile

goldfiish [28.3K]

That equation would be ...
distance = speed × time
d = 670,616,629*h . . . . . distance in miles

6 0

3 years ago

Read 2 more answers

A computer charges 20 pesos per hour (or a fraction of an hour) for thw first two hours and an additional 10 pesos per hour for

Svet_ta [14]

This takes too long!!!!!!!!

3 0

3 years ago

A gallup survey indicated that 72% of 18- to 29-year-olds, if given choice, would prefer to start their own business rather than

Neko [114]

Answer:

The probability that no more than 70% would prefer to start their own business is 0.1423.

Step-by-step explanation:

We are given that a Gallup survey indicated that 72% of 18- to 29-year-olds, if given choice, would prefer to start their own business rather than work for someone else.

Let $\hat p$ = sample proportion of people who prefer to start their own business

The z-score probability distribution for the sample proportion is given by;

Z = $\frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } }$ ~ N(0,1)

where, p = population proportion who would prefer to start their own business = 72%

n = sample of 18-29 year-olds = 600

Now, the probability that no more than 70% would prefer to start their own business is given by = P( $\hat p$ $\leq$ 70%)

P( $\hat p$ $\leq$ 70%) = P( $\frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } }$ $\leq$ $\frac{0.70-0.72}{\sqrt{\frac{0.70(1-0.70)}{600} } }$ ) = P(Z $\leq$ -1.07) = 1 - P(Z < 1.07)

= 1 - 0.8577 = 0.1423

The above probability is calculated by looking at the value of x = 1.07 in the z table which has an area of 0.8577.

3 0

3 years ago