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m_a_m_a [10]
3 years ago
11

Help me please I don't understand how to do it

Mathematics
1 answer:
mr_godi [17]3 years ago
4 0
X^2 + 4x -21
= (x +7)(x - 3)

hope that helps
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F(x)=x^2-2x+3 g(x)=x^2-2x-4 Find f(g(-2)
olga55 [171]

Answer:

f(g(-2))=11

Step-by-step explanation:

We are given the two functions:

f(x)=x^2-2x+3\text{ and } g(x)=x^2-2x-4

And we want to find:

f(g(-2))

We will find g(-2) first. So:

g(-2)=(-2)^2-2(-2)-4=4+4-4=4

Thus:

f(g(-2))=f(4)

Evaluate:

f(4)=(4)^2-2(4)+3=16-8+3=11

Therefore:

f(g(-2))=11

4 0
3 years ago
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
Maurinko [17]

Answer:

616 square centimeters

Step-by-step explanation:

Area of a circle is equal to pi × r^2. In this case, they have asked that you substitute 3.14 or 22/7 for pi, so I will be using 22/7, instead.

Diameter is equal to 2r; to find the radius, simply divide 28 by two. This gives us a radius of 14.

Multiply 14 squared by 22/7:

(22/7)(14^2)

This gives us (22/7)(196); (4312/7); 616.

Therefore, the area of the circle is approximately 616 square centimeters.

8 0
2 years ago
PLSS HELPP WHAT THE ANSWERRR!!:)
Pani-rosa [81]

Answer:

b

Step-by-step explanation:

so you just oush itjsndnsjsj

5 0
2 years ago
Read 2 more answers
Henry had $1.05 in nickels and dimes. He had a total of 13
Amiraneli [1.4K]
80 dimes and 25 nickels
8 0
2 years ago
Name the number property illustrated by this<br>equation:<br>-2(–3 + 7) = -2(-3) + (-2)(7)​
erica [24]

Answer:

The distributive property of multiplication

Step-by-step explanation:

<u>explanation</u>:-

The distributive property of multiplication states that when a number is multiplied by the sum of two numbers, the first can be distributed to both of those numbers and multiplied by each of them separately,then adding the two products together for the same result as multiplying the first number by sum.

a(b+c) = a.b + a.c

so -2 ( -3+7) = -2(-3) + (-2)(7)

   -8  =  6 -14

   -8 = - 8

give data we will use distributive property of multiplication

5 0
3 years ago
Read 2 more answers
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