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Lemur [1.5K]
3 years ago
11

Multiply.

Mathematics
1 answer:
prohojiy [21]3 years ago
8 0

Answer:

D. 3x² + 19x - 14

Step-by-step explanation:

Use FOIL to find the answer.

First: x * 3x = 3x²

Outer: -2 * x = -2x

Inner: 3x * 7 = 21x

Last: 7 * -2 = -14

Form the equation:

3x² - 2x + 21x - 14

Combine like terms.

3x² + 19x - 14

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Which Value From The Number Set 1,3,5,7 Makes The Inequality X+5>10 True
Ne4ueva [31]
Put all number choices in for x. 1+5=6, 3+5=8, 5+5=10, 7+5=12. The equation says that the answer has to be greater than ten. 6 and 8 are less than ten, and ten is equal to ten, so the only answer is 7, because 7+5=12 :)
6 0
3 years ago
Find the average rate of change<br> f(x)=x^2−6x+8 when x2=1 and x1=3
sergeinik [125]

Answer:

Average rate of change for given function is: -2

Step-by-step explanation:

Given function is:

f(x)=x^2-6x+8\\x_12= 1\\x_1 = 3

In order to find the rate of change, we have to find the value of function on x1 and x2

So,

f(x_1) = (3)^2-6(3)+8 = 9-18+8 = -1\\f(x_2) = (1)^2-6(1)+8 = 1-6+8 = 3

The formula for finding the rate of change is:

Rate\ of\ change = \frac{f(x_2)-f(x_1)}{x_2-x_1}

Putting the values, we get

=\frac{3-(-1)}{1-3}\\=\frac{3+1}{-2}\\=\frac{4}{-2}\\= -2

Hence,

Average rate of change for given function is: -2

3 0
3 years ago
Read 2 more answers
What is the average rate of change on the interval from 3 to 9?
sammy [17]

Answer:

5

Step-by-step explanation:

3 0
3 years ago
Please help me with this
Nady [450]

Step-by-step explanation:

1. miles to yards is 1 mile= 1,760yards. is rounded too about 3 miles or 2.98181818 repeating.

2. cups to ounces is 1 cup=8 ounces. is 960 ounces

3. feet to yards is 1 foot=0.333333 yards. is rounded too 16.7 yards or 16.6667

4. tons too pounds 1 ton=2,000 pounds. is 24000 pounds.

5. milligrams in a gram is 1 gram= 1,000 milligrams. is 1.42grams

Hope this helsp!!

8 0
3 years ago
Read 2 more answers
Could someone please tell me or explain how to solve these types of equations?? you don’t have to do these problems specifically
Lunna [17]
Okay so you know a straight line is equal to 180 degrees, so you set them up in an algebraic equation. (5x+2)+48=180 subtract 48 first to get 5x+2=132 Subtract the 2 this time to get 130. Now you end up with 5x=130. Here you divide 130 by 5 to get X=26. If you just need to find the degree of that angle tho you can stop after the first subtraction because the math tells you (5x+2)=132 degrees.
8 0
3 years ago
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