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4 years ago

Simplify (n+3)(n-9)

Mathematics

1 answer:

Katarina [22]4 years ago

6 0

From multiplying the binomial expression

(n+3)(n-9)

It would be n^2 - 9n + 3n - 27 or simplified

n^2 -6n - 27.

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I need some help and can you please show your work? Thank you have a good day

Colt1911 [192]

Answer:

Step-by-step explanation:(4+7)-(1)

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3 years ago

How do i do this? geometry

iren [92.7K]

Answer:

80?

Step-by-step explanation:

the total amount of degrees in a hexagon is 720. Divide that by 6 and you get 120. Each corner is 120. It doesnt have a right angle measure on it so it has to be lowerer then 90.

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2 years ago

Division 542 dividido 2 y resta

vodomira [7]

Answer: 271

Step-by-step explanation:

$\frac{542}{2}=\frac{500+40+2}{2}=250+20+1+=271$

5 0

2 years ago

A medical researcher needs 37 people to test the effectiveness of an experimental drug. If 101 people have volunteered for the t

Rashid [163]

Answer:

The number of ways to select 37 people from 101 is, 5,397,234,129,638,871,133,346,507,775.

Step-by-step explanation:

In mathematics, the procedure to select k items from n distinct items, without replacement, is known as combinations.

The formula to compute the combinations of k items from n is given by the formula:

${n\choose k}=\frac{n!}{k!\cdot (n-k)!}$

Compute the number of ways to select 37 people from 101 as follows:

${101\choose 37}=\frac{101!}{37!\cdot (101-37)!}$

$=\frac{101!}{37!\times 64!}\\\\=\frac{101\times 100\times 99\times....64!}{37!\times 64!}\\\\=5397234129638871133346507775$

Thus, the number of ways to select 37 people from 101 is, 5,397,234,129,638,871,133,346,507,775.

5 0

3 years ago

Is (-2,-6) a solution of y < 7x + 8?

mojhsa [17]

Answer:

not a solution

Step-by-step explanation:

y < 7x + 8

Substitute (2-,-6) into the inequality

-6 < 7(-2) +8

-6 <-14+8

-6 <-6

This is not true because they are equal not less than

6 0

4 years ago

Read 2 more answers