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Varvara68 [4.7K]

3 years ago

11

One number is 3 more than 2 times the other, and their sum is 27. Find the numbers. If x represents the smaller number, then the

larger number is

1 answer:

Sladkaya [172]3 years ago

7 0

I have an answer in mind, but i'm not 100% sure. I re-read the question, and I got 2x+3.

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Y = 2x + 3<br> y = 3x - 1

lilavasa [31]

Answer:

x= 4 and y= 11

Step-by-step explanation:

The problem to solve is:

y = 2x + 3 (equation 1)

y = 3x - 1 (equation 2)

Since y = 3x - 1 Solve x from equalution 1

3x - 1 = 2x + 3

3x - 2x = 3 + 1

x = 4

Since x is 4, solve for y

y = 3x - 1

y = 3(4) - 1

y = 12 -1

y = 11

x =4 and y =7

3 0

3 years ago

Natalie counted the number of birds she saw each day for 20 days, and she recorded her data in the table. Which scatterplot corr

vlada-n [284]

Answer:

I would answer this question, however there is no picture in order for me to tell.

Step-by-step explanation:

:(

5 0

3 years ago

What value(s) of x will make each equation below true?

kvasek [131]

Answer:

a X=0

b X=0

c X= undetermined

5 0

3 years ago

Read 2 more answers

A gas tank contains 5.3 gallons.the capacity of the tank is 12.5 gallons.how much will it cost to fill the tank at $1.30 per gal

fredd [130]

Answer:

$9.36

Step-by-step explanation:

First 12.5 - 5.3 = 7.2

7.2 x 1.30 = 9.36

3 0

4 years ago

Suppose the population standard deviation is σ = 5 , an SRS of n = 100 is obtained, and the confidence level is chosen to be 98%

beks73 [17]

Answer:

1.165.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.98}{2} = 0.01$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.01 = 0.99$ , so $z = 2.33$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

In this problem, we have that:

$\sigma = 5, n = 100$ . So

$M = z*\frac{\sigma}{\sqrt{n}}$

$M = 2.33*\frac{5}{\sqrt{100}} = 1.165$

So the correct answer is:

1.165.

6 0

3 years ago