3 years ago

What is 6m2 + 6m - 9m2

Mathematics

1 answer:

Serhud [2]3 years ago

3 0

The answer is -3m2+6m.

You might be interested in

Express 18 as a product of its factors?

Dimas [21]

Answer:

18= 2 x 3 x 3

Step-by-step explanation:

Basically, we branch out 18 into its prime factors. So, the prime factorization of 18 is 18= 2 × 3 × 3. A factor tree is not unique for a given number. Instead of expressing 18 as 2 × 9, we can express 18 as 3 × 6.

7 0

2 years ago

A scientist studying water quality measures the lead level in parts per billion (ppb) at each of 49 randomly chosen locations al

NeX [460]

Complete Question

The complete qustion is shown on the first uploaded image

Answer:

The correct option is B

Step-by-step explanation:

From the question we are told that

The sample size is $n = 49$

The mean is $\mu = 17ppb$

The standard deviation is $\sigma = 14 ppb$

Generally the standard error of this measurement is mathematically represented as

$\sigma_z = \frac{\sigma}{\sqrt{n} }$

substituting values

$\sigma_{\= x} = \frac{14}{\sqrt{49} }$

$\sigma_{\= x} = 2$ ppb

Now the probability that the mean lead level from the sample of 49 measurements T is less than 15 ppb represented as P(X < 15 )

Next is to find the z value

$z = \frac{\mu -\sigma }{\sigma_{\= x}}$

$z = \frac{15-17}{2}$

$z = -1$

Now checking the z-table for the z-score of -1 we have

$P(X$

5 0

4 years ago

Im just lonely please drop ur social medias

vagabundo [1.1K]

Are you a boy or girl?

3 0

3 years ago

Read 2 more answers

Jason draws a line in the sand at the beach. The line is 7/8 ft long. He wants to divide the line into sections that are each 1/

algol [13]

Into seven sections.

3 0

4 years ago

Read 2 more answers

Ryan is making small meat loaves. each small loaf uses 3/4 pound of meat. How much meat does he need to make 8 loaves?

dimaraw [331]

He needs 6 pounds of meat to make 8 meat loaves

5 0

4 years ago

Read 2 more answers