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3 years ago

A square pyramid is shown. What is the surface area?

Mathematics

2 answers:

Blizzard [7]3 years ago

4 0

Answer:

C. 31.25 cm²

Step-by-step explanation:

<u>Surface area comprises of:</u>

A = Area of square base + 4(area of triangle faces)
A = 2.5² + 4*1/2*2.5*5= 31.25 cm²

Correct option is C

Leya [2.2K]3 years ago

4 0

Answer:

its 31.25 i took the test and got it right

Step-by-step explanation:

You might be interested in

Suppose the function f(x) = 2x + 12

yarga [219]

First figure out how much it costs to rent seven movies a month. f(7)=2(7) + 12–> 14 + 12–> $26 Now we need to find the difference between 26 and 10. 26 - 10= 16. So Casey needs $16 more to rent 7 movies a month

5 0

3 years ago

The head of maintenance at XYZ Rent-A-Car believes that the mean number of miles between services is 2135 miles, with a variance

stiv31 [10]

Answer:

0.36878

Step-by-step explanation:

Given that:

Mean number of miles (m) = 2135 miles

Variance = 145924

Sample size (n) = 40

Standard deviation (s) = √variance = √145924 = 382

probability that the mean of a sample of 40 cars would differ from the population mean by less than 29 miles

P( 2135 - 29 < z < 2135 + 29)

Z = (x - m) / s /√n

Z = [(2106 - 2135) / 382 / √40] < z < [(2164 - 2135) / 382 / √40]

Z = (- 29 / 60.399503) < z < (29 / 60.399503)

Z = - 0.4801364 < z < 0.4801364

P(Z < - 0.48) = 0.31561

P(Z < - 0.48) = 0.68439

P(- 0.480 < z < 0.480) = 0.68439 - 0.31561 = 0.36878

= 0.36878

3 0

2 years ago

Question 8 Find the unit vector in the direction of (2,-3). Write your answer in component form. Do not approximate any numbers

slamgirl [31]

Answer:

The unit vector in component form is $\hat{u} = \left(\frac{2}{\sqrt{13} },-\frac{3}{\sqrt{13}} \right)$ or $\hat{u} = \frac{2}{\sqrt{13}}\,i-\frac{3}{13}\,j$ .

Step-by-step explanation:

Let be $\vec u = (2,-3)$ , its unit vector is determined by following expression:

$\hat {u} = \frac{\vec u}{\|\vec u \|}$

Where $\|\vec u \|$ is the norm of $\vec u$ , which is found by Pythagorean Theorem:

$\|\vec u\|=\sqrt{2^{2}+(-3)^{2}}$

$\|\vec u\| = \sqrt{13}$

Then, the unit vector is:

$\hat{u} = \frac{1}{\sqrt{13}} \cdot (2,-3)$

$\hat{u} = \left(\frac{2}{\sqrt{13} },-\frac{3}{\sqrt{13}} \right)$

The unit vector in component form is $\hat{u} = \left(\frac{2}{\sqrt{13} },-\frac{3}{\sqrt{13}} \right)$ or $\hat{u} = \frac{2}{\sqrt{13}}\,i-\frac{3}{13}\,j$ .

6 0

3 years ago

8 1/4 divided by t = 2/11<br> Answer for t

Westkost [7]

Answer:

1 1/2

Step-by-step explanation:

Turn 8 1/4 into 33/4

Then multiply 33/4*2/11 to get 66/44 then simplify to 1 1/2

4 0

2 years ago

Read 2 more answers

Solve the system of equations using any method. HELP ME PLEASEEEEE!!!!!!

almond37 [142]

The answer is D, (1/3, 4).

Hope this helped!

7 0

3 years ago