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scoray [572]
3 years ago
15

Helpppp

Mathematics
1 answer:
Novay_Z [31]3 years ago
7 0

Answer:

a) 3x - 6x^2y + 2xy - 2x

b) 4x^2 <u>- 3y </u>+ 2x <u>+ 7y</u>

Step-by-step explanation:

Like terms is when the terms are the same.

For example, 3x and -2x would be like terms (both have x).

Not like terms would be 4x^2 and +2x (one is just an x and the other is x^2).

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Grandma has 14 red roses and 7 pink roses how many more red roses than pink does she have explain how you solve the promblem
Helga [31]
She has 7 more roses. you can subtract to find the difference. 14-7=7
4 0
4 years ago
In the library on a university campus, there is a sign in the elevator that indicates a limit of 16 persons. Furthermore, there
Vedmedyk [2.9K]

Answer:

a) 151lb.

b) 6.25 lb

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, a large sample size can be approximated to a normal distribution with mean \mu and standard deviation \frac{\sigma}{\sqrt{n}}.

In this problem, we have that:

\mu = 151, \sigma = 25, n = 16

So

a) The expected value of the sample mean of the weights is 151 lb.

(b) What is the standard deviation of the sampling distribution of the sample mean weight?

This is s = \frac{\sigma}{\sqrt{n}} = \frac{25}{\sqrt{16}} = 6.25

8 0
3 years ago
How do you round 699 to the nearest tenth.
Nadusha1986 [10]
700 because the 9 in the tenth place is larger than 5
6 0
3 years ago
You buy a shirt for $25 and sales tax is 4.1
Slav-nsk [51]

Answer:

I think $26.03

Step-by-step explanation:

4.1% of $25 is 1.03 ( I rounded it)

so 1.03 is the sales tax.

$25.00 + $1.03 = 26.03

5 0
4 years ago
The list price of a diamond ring is $662. The jeweler is offering a chain discount of 15% less 10%. What is the final net price
Mnenie [13.5K]
672 dollars is the net price because 15 percent off of 10 percent of 662 dollars is about 10 dollars and 10 + 662 is 672
6 0
4 years ago
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