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Natalija [7]
3 years ago
7

For each expression below, select the letter that corresponds to the equivalent expression given above.

Mathematics
1 answer:
11111nata11111 [884]3 years ago
3 0
Part 1)
(x²+15x+65)+(2x-5)*(3x+8)
(x²+15x+65)+(6x²+16x-15x-40)
(7x²+16x+25)

the answer Part 1) is the letter B
(7x²+16x+25)

Part 2)
(4x+1)*(3x-4)-(5x²-10x-12)
(4x+1)*(3x-4)-(5x²-10x-12)
(12x²-16x+3x-4)-(5x²-10x-12)
(7x²-3x+8)

the answer Part 2) is the letter D
(7x²-3x+8)

Part 3) 
(8x²+19x+4)+(3x+2)*(x-5)
(8x²+19x+4)+(3x²-15x+2x-10)
(11x²+6x-6)

the answer part 3) is the letter A
(11x²+6x-6)

Part 4) 
(6x+1)*(3x-7)-(7x²-34x-20)
(18x²-42x+3x-7)-(7x²-34x-20)
(11x²-5x+13)

the answer Part 4) is the letter C
(11x²-5x+13)

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Help with number two
BabaBlast [244]

Answer:

y = -2x+1

Step-by-step explanation:

We have a point and a slope, so we can use the point slope form of a line

y-y1 = m(x-x1)  where m is the slope and (x1,y1) is the point

y-3 = -2(x--1)

y-3=-2(x+1)

Distribute the 2

y-3 = -2x-2

Add 3 to each side

y-3+3 = -2x-2+3

y = -2x+1

This is in slope intercept form

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3 years ago
What is the name of the number that tells you how many groups?
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Answer:

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Step-by-step explanation:

you begin with fifteen items and want to know how many groups you can make with three items in each group. The answer, or quotient, is the number of groups. 3 = 5. The number that is divided is called the dividend and the number which the dividend is being divided by is the divisor.

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melamori03 [73]

Here is my answer. I hope this is helpful.

4 0
3 years ago
What is the mean "6 5 6 1 5 5 0"
yulyashka [42]

Answer:

the mean is 4

Step-by-step explanation:

add 6+5+6+1+5+5+0=28

then divide 28 by how many numbers there are so it would be 7 numbers

28 divided by 7 equals 4

4 0
3 years ago
Read 2 more answers
If f(x)= (3x+7)^2, then f(1) = ?
Crank
To find f(1), substitute 1 for x.

f(1) = (3(1)+7)²
f(1) = (3+7)²
f(1) = 10²
f(1) = 100
3 0
3 years ago
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