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Hunter-Best [27]
3 years ago
9

Which of the following are solutions to the equation below? Check all that apply. 4x2 - 12x + 9 = 5​

Mathematics
1 answer:
Anika [276]3 years ago
4 0

Step-by-step explanation:

4x² - 12x + 9 = 5 → 4x² - 12x + 4 = 0 → x² - 3x + 1 = 0

∆ = b² - 4ac → ∆ = (-3)² -4(1)(1) = 9 - 4 = 5

x = (-(-3) ± √5)/2(1) = (3 ± √5)/2

x² - 3x + 1 = 0 → (x - 3/2)² - 9/4 + 1 = 0 → (x - 3/2)² = 5/4 → x - 3/2 = ±√5 / 2 → x = ½( 3 ± √5)

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Find the answer to this question: 205.04/4
Ivan
Should be 51.26 if you did 205.04 and divided it by 4
4 0
2 years ago
∠A and \angle B∠B are supplementary angles. If m\angle A=(7x+24)^{\circ}∠A=(7x+24) ∘ and m\angle B=(7x-26)^{\circ}∠B=(7x−26) ∘ ,
Arturiano [62]

Answer:

115degrees

Step-by-step explanation:

Given the following angles

m<A=(7x+24)°

m<B=(7x-26)°

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Taking the sum of the angles

m<A + m<B = 180

7x+24 + 7x - 26 = 180

14x - 2 = 180

14x = 180+2

14x = 182

x = 182/14

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get m<A

m<A = 7x+24

m<A = 7(13) + 24

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m<A  = 115

Hence the measure of angle m<A is 115degrees

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2 years ago
How many numbers between 1 and 100 (inclusive ) are divisible by 5 or 3?
jeka94

Answer:

33 and 19

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5 0
3 years ago
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n = 2q + 3
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