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Lapatulllka [165]
3 years ago
8

9.

Mathematics
1 answer:
e-lub [12.9K]3 years ago
8 0

Answer:

a = 0.3 and b = - 1.1

Step-by-step explanation:

(x - 2)² = x² -4x + 4

Hence, x² - 4x + 4 = 3x - 6

x² - 7x + 10 = 0

(x - 5)(x - 2) = 0

∴ x = 5 or 2

f(5) = 25a + 5b = 2  ----- (i)

f(2) = 4a +  2b = -1  ------ (ii)

(i) X 2: 50a + 10b = 4 ----- (iii)

(ii) X 5: 20a + 10a = -5  ---- (iv)

Subtract (iv) from (iii): 30a = 9

a = 0.3

Substitute a into (ii) to obtain b

4(0.3) + 2b = -1

2b = -1 - 1.2 = -2.2

∴ b = -1.1

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Guys please help (7thgrademath) both of the ones 1-10
Alex787 [66]

Hello!

Answer:

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6 0
3 years ago
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The formula P=4s gives the perimeter P of a square with side length s. What is the perimeter sign with a side length of 15 inche
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A vectador is buying two new cowboy hats.All together the hats cost $75.12.The second hat costs twice as more as the first hat.W
faust18 [17]
<h2>Greetings!</h2>

Answer:

$50.08

Step-by-step explanation:

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If the more expensive hat is 2x this, then:

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So the more expensive hat is $50.08!


<h2>Hope this helps!</h2>
6 0
3 years ago
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