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3 years ago

5

A student constructs a regular square pyramid with a base that has sides of 13.2 cm and a slant height of 6 cm. Find the surface

area of the pyramid.
30 Points!!!!

1 answer:

Komok [63]3 years ago

6 0

Answer:

It is 409.72.

Step-by-step explanation:

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At winds speeds above 1000 centimeters per second (cm/sec), significant sand-moving events begin to occur. Wind speeds below 100

alisha [4.7K]

Answer:

Lower limit = 1007.95 cm/s

Upper limit = 1142.05 cm/s

Step-by-step explanation:

We have to calculate a 95% CI with population's standard deviation known.

The sample is size n=60, with mean M=1075.

The confidence interval can be expressed as:

$M-z*\sigma/\sqrt{n} \leq\mu\leq M+z*\sigma/\sqrt{n}$

For a 95% CI, the value of z=1.96.

$1075-1.96*265/\sqrt{60} \leq\mu\leq 1075+1.96*265/\sqrt{60} \\\\1075-67.05 \leq\mu\leq 1075+67.05\\\\ 1007.95 \leq\mu\leq 1142.05$

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3 years ago

Terrion and Johnny are racing across the football field during practice. Terrion has run 89/100 of the field, and Johnny has run

stepan [7]

Answer:

They ran it equally

Step-by-step explanation:

89/100 equals 0.89: 89 divided by 100 = 0.89.

4 0

2 years ago

A store has 300 televisions on order, and 80% are high definition, how many televisions on order are high difinition?

Brilliant_brown [7]

Answer:240

Step-by-step explanation:

300*80%=240

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3 years ago

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Referring to the Fig. in Question #40, find the unknown<br> length Y.

icang [17]

Answer:

tan30°=7/x

$\frac{1}{ \sqrt{3} } = \frac{7}{x } \\ x = 7 \sqrt{3}$

cos30°=x/y

$\frac{ \sqrt{3} }{2} = \frac{7 \sqrt{3} }{y} \\ \\ 7 \sqrt{3} \times 2 = \sqrt{3} \times y \\ \frac{7 \sqrt{3 } \times 2}{ \sqrt{3} } = y \\7 \times 2 = y \\ 14 = y$

tell me if it's wrong.

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2 years ago

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Lily buys a sweater that is on sale for $42, which is 75% of the original price of the sweater. What was the original price of t

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So first sivid 42 by 3 to get 14. Then multiply 14 by 4 to get 56. So the answer is C

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3 years ago

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