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3 years ago

Please help with part b

Mathematics

2 answers:

grigory [225]3 years ago

8 0

Tthe box without the length will be 3.7 cm because if you look straigh ahead there is a shape thats congruent so it has the same length
You add all the numbers together + the 3.7
I hope this helps

kotykmax [81]3 years ago

3 0

I don't know what ur supposed to do but if u add them it equals 31.9 sorry if that's not what you have to do

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2008, the price of a gallon of unleaded gasoline was $4.02. In 1990, it was only $1.37 per gallon. What is the increase expresse

kupik [55]

Answer:

Step-by-step explanation:

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3 years ago

Question 12 Multiple Choice Worth 1 points)

natta225 [31]

Complete question:

A spinner is divided into many sections of equal size. Some sections are red, some are blue, and the remaining are green. The probability of the arrow landing on a section colored red is 11 over 20. The probability of the arrow landing on a section colored blue is 6 over 20. What is the probability of the arrow landing on a green-colored section?

Answer: 3/20

Step-by-step explanation:

From the question, the spinner is divided equally into sections painted with 3 different colors (RED, BLUE and GREEN)

Given that:

P(arrow landing on red) = 11 / 20

P(arrow landing on blue) = 6/20

The probability of arrow landing on green is therefore :

Sum of the probabilities of red and blue :

P(arrow landing on red) + P(arrow landing on blue)

= (11/20 + 6/20) = 17/20

Recall : The sum of probabilities of mutually exclusive events must sum up to 1. Therefore, since the events represented above are mutually exclusive, that is no two events can occur at the same time.

Then:

P(arrow landing on red) + P(arrow landing on blue) + P(arrow landing on green) = 1

Hence,

P(arrow landing on green) = 1 - [(P(arrow landing on red) + P(arrow landing on blue)]

P(arrow landing on green) = 1 - [11/20 + 6/20]

P(arrow landing on green) = 1 - 17/20

P(arrow landing on green) = 3/20

4 0

3 years ago

Read 2 more answers

Given a set of data that is skewed-left, there is at least _____ % of the data within 2 standard deviations.

Rasek [7]

Answer:

Step-by-step explanation:

For non-normal distributions, we use Chebyshev's Theorem.

Chebyshev Theorem

The Chebyshev Theorem states that:

At least 75% of the measures are within 2 standard deviations of the mean.

At least 89% of the measures are within 3 standard deviations of the mean.

An in general terms, the percentage of measures within k standard deviations of the mean is given by $100(1 - \frac{1}{k^{2}})$ .

In this question:

Within 2 standard deviations of the mean, so 75%.

7 0

3 years ago

Shane deposited $200 into an account and earned $36 in interest after 3 years. Use the formula I = prt, where I represents simpl

IrinaVladis [17]

Answer:

The interest rate = 6 %

Explanation:

We have I = prt, where I represents simple interest, p represents principal, r represents interest rate, and t represents time in years.

Here principal, p = 200 $

Number of years , t = 3

Interest received, I = 36$

We need to find rate of interest.

Substituting

36 = 200 x r x 3

r = $\frac{36}{200*3}$ = 0.06 = 6%

The interest rate = 6 %

3 0

4 years ago

The speed of an Arabian horse is "4x + 2" miles per hour slower than a thoroughbred horse with a speed of "25x − 5" miles per ho

sdas [7]

Answer:

B) 21x-7

Step-by-step explanation:

Let A = speed of Arabian horse and T = speed of thoroughbred.

Then

A = T – (4x + 2)

A = T – 4x - 2 Remove parentheses

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A = 21x - 7

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3 years ago