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xenn [34]
3 years ago
11

HELP it's a maths question worth 4 marks

Mathematics
1 answer:
Ksenya-84 [330]3 years ago
4 0

a = 3, b= - 4 and c = - 4

expand the left side using FOIL

(2x + 1)(ax + b) = 2ax² + 2bx + ax + b = 2ax² + x(2b + a) + b

compare the coefficients of expressions on left and right sides.

compare 2ax² + x(2b +a) + b with 6x² - 5x + c

coefficients of x² terms → 2a = 6 ⇒ a = 3

coefficients of x terms → 2b + a = - 5 → 2b + 3 = - 5 → 2b = - 8 ⇒ b = - 4

constant terms c = b = - 4


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Pavlova-9 [17]
<span>10x-5y=25 solve for y
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hope it helps</span>
8 0
3 years ago
Brandon buys a radio for $43.89 in a state where the sales tax is 7percent
kkurt [141]

Answer:

$3.07 in taxes

Step-by-step explanation:

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6 0
3 years ago
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Please someone tell me the answers to these I dont remember how to do it ​
Delvig [45]

Answer:

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3) (10 - 2x)9 = (9)(10) - (9)(2x) = 90 - 18x

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5) (1 - 9x)(-10) = (-10)(1) - (-10)(9x) = -10 - (-90x) = -10 + 90x = 90x - 10

6) (-6)(x + 8) = (-6)(x) + (-6)(8) = -6x + (-48) = -6x - 48

7) (-4 + 3x)(-8) = (-8)(-4) + (-8)(3x) = 32 + (-24x) = 32 - 24x

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Step-by-step explanation:

The distributive property is a(b + c) = ab + ac

8 0
2 years ago
A number line contains points Q, R, S, and T. Point Q is on the coordinate 24, R is on the coordinate 28, S is on the coordinate
const2013 [10]

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7 0
3 years ago
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What is the length of the missing leg?
sp2606 [1]

Answer:

a=12

Step-by-step explanation:

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The, we subtract 81 from both sides getting:

a^{2}=144,

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6 0
2 years ago
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