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3 years ago

Will give brainless This is due tomorrow at 12pm

Mathematics

1 answer:

erastova [34]3 years ago

3 0

Answer:

The most common rock-forming minerals are quartz, feldspar, mica, pyroxene, amphibole, and olivine. The most reliable way to identify a mineral is by using a combination of several tests. A crystal is a solid in which the atoms are arranged in repeating patterns.

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The number of students in math to english class is 4:5. There are 1500 students in the building . How many are in the math class

Rus_ich [418]

Answer:

667 students are in math class

Step-by-step explanation:

Step 1: Find the total number of parts Looking at the ratio 4:9, we have: 4 + 5 = 9 So, we have 9 parts in total.

First divide by 9

1500/9=166.666667

now multiply by 4

666.666667

now round up

667

6 0

3 years ago

Please help on question 15

statuscvo [17]

144 rocks
-------------- = 12 rocks/team
12 teams

8 0

3 years ago

What percent represents the part of the model shaded green

Mariulka [41]

We don’t have a model or a photograph to actually represent us the green that is shaded.

Add a photograph and rewrite this question.

I must guess letter B.

8 0

3 years ago

The head of maintenance at XYZ Rent-A-Car believes that the mean number of miles between services is 3408 miles, with a variance

Murrr4er [49]

Answer:

The probability that the mean of a sample of 36 cars would be less than 3245 miles

P(X⁻≤3245) = 0.975

Step-by-step explanation:

Step(i):-

The mean number of miles between services

μ= 3408 miles

The Variance of miles between services

σ² = 249,001

σ = √249,001 = 499

Let 'X' be a random variable in a normal distribution

Given sample size 'n' =36

Step(ii):-

$Z = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }$

Z = -163/83.16 = 1.96

The probability that the mean of a sample of 36 cars would be less than 3245 miles

P(X⁻≤3245) = P(Z≤1.96)

= 0.5 + A(1.96)

= 0.5 + 0.4750

= 0.975

Final answer:-

The probability that the mean of a sample of 36 cars would be less than 3245 miles

P(X⁻≤3245) =0.975

6 0

3 years ago

In the coronet plane, what is the length of the line segment that connects points at (5, 4) and (-3, -1)? Enter your answer in t

lozanna [386]

Answer:

Step-by-step explanation:

The formula of a distance between two points:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

We have the points (5, 4) and (-3, -1). Substitute:

$d=\sqrt{(-3-5)^2+(-1-4)^2}=\sqrt{(-8)^2+(-5)^2}=\sqrt{64+25}=\sqrt{89}\approx9.43$

4 0

3 years ago