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Slav-nsk [51]
2 years ago
12

Lol, I have no idea what to do

Mathematics
1 answer:
romanna [79]2 years ago
5 0
ANSWER:
a) 60 tickets
b) 15 tickets per class
c) 40 adult tickets
d) $240
e} i) $60 ii) 12 adult tickets
STEP BY STEP EXPLANATION WITH ANSWERS BELOW:
(i explained what to do for it to help you in the future when you need to do questions like these again)

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Edward deposited $5,500 into a savings account 4 years ago. The interest rate is 5%. How much money did Edward earn in interest?
NeTakaya

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Step-by-step explanation:

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3 years ago
A tree is leaning at a 5° angle from vertical, making an 85° angle with the ground. When the sun is at a 65° angle of elevation,
Vinvika [58]
D = 25 ft is the length of a shadow. L -  the length of a tree.
Two angles are 85° and 65° and the third is 180° - ( 65° + 85° ) =
= 180° - 150° = 30°.
We will use the Sine Law:
25 / sin 30° = L / sin 65°
25 / 0.5 = L / 0.9063
25 * 0.9063 = 0.5 L
22.6577 = 0.5 L
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Answer: the approximate length of the tree is 45.3 ft.


3 0
3 years ago
Lynda is training for a half-marathon she ruined 3 3/4 miles on Monday 3 miles on Tuesday and two and a half miles on Wednesday
Shalnov [3]
3 3/4+3+2 2/4=9 1/4.
8 0
3 years ago
I need an answer fast!! Somebody please help me??
Savatey [412]
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6 0
3 years ago
Read 2 more answers
The scores for a certain test of intelligence are normally distributed with mean 85 and standard deviation 11. Find the 90th per
jonny [76]

Answer:

99.1 is the 90th percentile of these scores.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 85

Standard Deviation, σ = 11

We are given that the distribution of score is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

We have to find the value of x such that the probability is 0.90

P( X < x) = P( z < \displaystyle\frac{x - 85}{11})=0.90  

Calculation the value from standard normal z table, we have,  

P(z \leq 1.282) = 0.90

Putting values, we get,

\displaystyle\frac{x - 85}{11} = 1.282\\\\x = 99.1

Thus, 99.1 is the 90th percentile of these scores.

5 0
3 years ago
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