All categories

3 years ago

I need helpp plss ///:

Mathematics

1 answer:

kifflom [539]3 years ago

5 0

Hello from MrBillDoesMath!

Answer:

3/tan(35) (approximately 4.3)

Discussion:

From plane trigonometry

tan (35) = (side opposite angle )/(side adjacent angle)

= 3 / ? (*)

Multiply both sides of (*) by ? to get

? tan(35) = 3/? * ? = 3

Divide both sides by tan(35) to get

? = 3/tan(35)

= 3 /(.700 ) approximately

= 4.3

Thank you,

MrB

You might be interested in

1. Does this equation represent growth or decay?<br> A (t) = 800(1.21)

Sholpan [36]

Answer:Decay

Step-by-step explanation: because of perenthesis

6 0

3 years ago

Read 2 more answers

A sporting goods store has a sale on soccer balls: if you buy two soccer balls at the regular price, you get a third soccer ball

Snowcat [4.5K]

Answer:

The regular price of the balls is $8

Step-by-step explanation:

The sporting goods store sales promotion is as follows;

The price of the third ball after buying two balls at regular price = $1.00

The price of the number of balls Coach John pays for the balls he bought = $136

To buy 24 balls, we have;

2 + 1 + 2 + 1 + 2 + 1 + 2 + 1 + 2 + 1 + 2 + 1 + 2 + 1 + 2 + 1

Therefore;

The number of balls bought at regular price = The sum of the 2s = 16 balls

The number of balls bought for $1 = 24 - 16 = 8 balls

Let x represent the regular price of the balls, we have;

16 × x + 8 = 136

16·x = 138 - 8 = 128

x = 128/16 = 8

The regular price of the balls = x = $8.

7 0

3 years ago

According to a 2018 survey by Bankrate, 20% of adults in the United States save nothing for retirement (CNBC website). Suppose t

nalin [4]

Answer:

0.5981 = 59.81% probability that three or less of the selected adults have saved nothing for retirement

Step-by-step explanation:

For each adult, there are only two possible outcomes. Either they save nothing for retirement, or they save something. The probability of an adult saving nothing for retirement is independent of any other adult. This means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$