MATHEMATICS MIDDLE SCHOOL

I need to write an even number between 7 and 16 draw a picture an them write a sentence to explain why it is an even number

Answers

Answer 1
Answer: An even  number is a number that is divisible by 2.
This means that dividing this number by 2 yields no remainder (the remainder is zero).

The even numbers between 7 and 16 are:
8 as 8/2 = 4 and remainder is zero
10 as 10/2 = 5 and remainder is zero
12 as 12/2 = 6 and remainder is zero
14 as 14/2 = 7 and remainder is zero
Answer 2
Answer: Write an even number between 7 + 16 Droid picture and then write a sentence to explain why is an even number

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MIDDLE SCHOOL

a rectangular table is two times as long as it is wide. if the area is 18ft^2, find the length and the width of the table.

Answers

Start here:  A = 18 ft^2 = L * W.  Next, L = 2W.

Merging these 2 formulas lets us eliminate L:

18 ft^2 = (2W) * (W) = 2W^2.

So W^2 = 9 ft^2, and W=3 ft.  Please use L = 2W (from above) to calculate L.

MIDDLE SCHOOL

Leo wants to paint a mural that covers a wall with an area of 1440 square feet. the height of the wall is 2/5 of its length what is the length and the height of the wall?

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H = 24 feet
L = 60 feet
MIDDLE SCHOOL

Standard form of two hundred ten million sixty four thousand fifty

Answers

210,064,000,050 is standard form
HIGH SCHOOL

Explain why can be helpful to use partial quotients is when dividing

Answers

This is because the sum of all the partial quotients will lead you to the final quotient. This is a technique in division where you make small estimates to reduce the dividend. Then, when it is reduced completely, you will just add the partial quotients.
HIGH SCHOOL

Two important ingredients for baking bread are yeast and flour. To make a loaf of bread of at most 30 servings, maintain a yeast to flour ratio of 1:200. If you're making a loaf of more than 30 servings, use a ratio of 1:180. If you're making 30 servings of bread and using 0.25 oz of yeast, how many ounces of flour do you need? If you're making 60 servings of bread and using 90 oz of flour, how many ounces of yeast do you need?

Answers

The required flour and yeast are 50 and 0.25.

Ratio and proportion

A ratio is an ordered pair of numbers a and b, written as a/b where b does not equal 0. A proportion is an equation in which two ratios are set equal to each other.

Given

To make a loaf of bread of at most 30 servings, maintain a yeast to flour ratio of 1:200.

you're making a loaf of more than 30 servings, use a ratio of 1:180.

To find

The ounces of yeast do you need?

How many ounces of yeast do you need?

If you're making 30 servings of bread and using 0.25 oz of yeast, then

If you're making 60 servings of bread and using 90 oz of flour, then

Thus the required flour and yeast are 50 and 0.25.

More about the ratio and proportion link is given below.

brainly.com/question/165414

Answer:

If 0.25 oz of yeast is used, then 50oz of flour is needed.

It would require 0.5 oz of yeast for 90 oz the flour.

Step-by-step explanation:

We know that the proportion of yeast (y) and flour (f) is 1: 200 when a maximum of 30 servings of bread is made. This is:

So if we use 0.25 oz of yeast:

if 0.25 oz of yeast is used, then 50oz of flour is needed.

If you make 60 servings of bread with 90 oz. Of flour, then you should keep the following ratio:

So, if we use f = 90 0z of flour:

It would require 0.5 oz of yeast.

MIDDLE SCHOOL

How would you prove this trigonomic identity? Please show steps.

Answers

Start by combining the fractions:

Recall the Pythagorean identity:

Then cancel a factor of and use the definition of secant:

MIDDLE SCHOOL

How do you factor x squared minus xy

Answers

(x^2) - xy
You can factor out an x, so you would get:
x(x - y)
HIGH SCHOOL

How do I multiply percent

Answers

Turn the percent to a decimal, and then multiply
COLLEGE

Battery lifetime is normally distributed for large samples. The mean lifetime is 500 days and the standard deviation is 61 days. To the nearest percentage, what percentage of batteries have lifetimes longer than 561 days?

Answers

To the nearest percentage, the percentage of batteries have lifetimes longer than 561 days is 0.1587 approx = 15.87% = 16% approx.

How to get the z scores?

If we've got a normal distribution, then we can convert it to standard normal distribution and its values will give us the z score.

If we have

(X is following normal distribution with mean and standard deviation )

then it can be converted to standard normal distribution as

(Know the fact that in continuous distribution, probability of a single point is 0, so we can write

Also, know that if we look for Z = z in z tables, the p value we get is

For this case, we can take:

X = the lifetime of the battery in the considered large sample.

Then by the provided information, we get:


The needed probability is P(X > 561)

This can be rewritten as:

561) = 1 - P(X \leq 561)\\" alt="P(X > 561) = 1 - P(X \leq 561)\\" align="absmiddle" class="latex-formula">

Converting this variate to standard normal variate using:

, we get this probability as:

561) = 1 - P(X \leq 561) = 1- P(Z \leq z = \dfrac{561 - 500}{61}) \\\\P(X > 561) = 1 - P(Z \leq 1)" alt="P(X > 561) = 1 - P(X \leq 561) = 1- P(Z \leq z = \dfrac{561 - 500}{61}) \\\\P(X > 561) = 1 - P(Z \leq 1)" align="absmiddle" class="latex-formula">

At Z = 1, the p-value obtained from the z-table is

Thus, we get:

561) = 1 - P(Z \leq 1) = 1- 0.8413 = 0.1587\\" alt="P(X > 561) = 1 - P(Z \leq 1) = 1- 0.8413 = 0.1587\\" align="absmiddle" class="latex-formula">

Thus, to the nearest percentage, the percentage of batteries have lifetimes longer than 561 days is 0.1587 approx = 15.87% = 16% approx.

Learn more about standard normal distribution here:

 brainly.com/question/10984889

Answer:

16% of batteries have lifetimes longer than 561 days.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean and standard deviation , the zscore of a measure X is given by:

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

To the nearest percentage, what percentage of batteries have lifetimes longer than 561 days?

This is 1 subtracted by the pvalue of Z when X = 561. So

has a pvalue of 0.8413.

1-0.8413 = 0.1587

Rounding to the nearest percentage, 16% of batteries have lifetimes longer than 561 days.

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