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Alinara [238K]
3 years ago
11

What's (6x+8)(5x-1) Can you help me solve it please

Mathematics
1 answer:
11111nata11111 [884]3 years ago
3 0
(6x+8)(5x-1)=30x^2-6x+40x-8=30x^2+34x-8
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COME ON ITS 1 QUESTION FOR 50 POINTS!
ale4655 [162]

Answer:

a = 3

b = 2

c = 0

d = -4

Step-by-step explanation:

Form 4 equations and solve simultaneously

28 = a(2)³ + b(2)² + c(2) + d

28 = 8a + 4b + 2c + d (1)

-5 = -a + b - c + d (2)

220 = 64a + 16b + 4c + d (3)

-20 = -8a + 4b - 2c + d (4)

(1) + (4)

28 = 8a + 4b + 2c + d

-20 = -8a + 4b - 2c + d

8 = 8b + 2d

d = 4 - 4b

Equation (2)

c = -a + b + d + 5

c = -a + b + 4 - 4b+ 5

c = -a - 3b + 9

28 = 8a + 4b + 2c + d (1)

28 = 8a + 4b + 2(-a - 3b + 9) + 4 - 4b

28 = 6a - 6b + 22

6a - 6b = 6

a - b = 1

a = b + 1

220 = 64a + 16b + 4c + d (3)

220 = 64(b + 1) + 16b + 4(-b - 1 - 3b + 9) + 4 - 4b

220 = 60b + 100

60b = 120

b = 2

a = 2 + 1

a = 3

c = -3 - 3(2) + 9

c = 0

d = 4 - 4(2)

d = -4

8 0
2 years ago
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Ostrovityanka [42]

Answer:

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Step-by-step explanation:

Finding 110 of a number is the same as dividing it by 10 . To find a tenth of something simply multiply it by 110 and then simplify.

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Step-by-step explanation:

13=-7

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3 years ago
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ella [17]

Answer:

A:B

Step-by-step explanation:

i need numbers or something.

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3 years ago
Graph the points and state whether they are collinear.
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All that is needed is for you to graph the points and if they form a line, they will be collinear. If not, they will not be collinear.
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