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nadezda [96]
2 years ago
13

Find the solutions to the equation below. check all that apply

Mathematics
1 answer:
BartSMP [9]2 years ago
6 0

Answer:

A and E

Step-by-step explanation:

Given

20x² - 26x + 8 = 0 ( divide through by 2 )

10x² - 13x + 4 = 0

Consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term.

product = 10 × 4 = 40 and sum = - 13

The factors are - 5 and - 8

Use these factors to split the x- term

10x² - 5x - 8x + 4 = 0 ( factor the first/second and third/fourth terms )

5x(2x - 1) - 4(2x - 1) = 0 ← factor out (2x - 1) from each term

(2x - 1)(5x - 4) = 0

Equate each factor to zero and solve for x

2x - 1 = 0 ⇒ 2x = 1 ⇒ x = \frac{1}{2} → E

5x - 4 = 0 ⇒ 5x = 4 ⇒ x = \frac{4}{5} → A

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Solve the equation. 31-12n=211​
Mashutka [201]

Answer:

Step-by-step explanation:

31 - 12n = 21l              Subtract 31 from both sides.

31-31-12n =211-31       Do the subtraction

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-12n/-12 = 190/-12

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6 0
3 years ago
If you flipped the graph y=x^2+2x-2 vertically, you would get the graph y=-(x^2 +2x-2). true or false
Mars2501 [29]
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2 years ago
How to show the tens fact you used. write the difference. <br> 12-7=____<br> 10-___=____
prisoha [69]
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2 years ago
Using the distributive property to find the value or each variable what is 5(9+13)=5m+5(13)
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7 0
3 years ago
Fourteen out of 20 teens said they eat breakfast every morning what is a reasonable prediction for the number of teens out of 12
Oksi-84 [34.3K]

Answer:

896

Step-by-step explanation:

14 of 20 teens eats breakfast every morning.

The percentage of those who eat breakfast every morning

= 14/20 x 100%

= 0.7 x 100%

= 70%

So, 70% of 20 teens eat breakfast every morning.

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896

The prediction would be 896 out of 1280 teens eats breakfast every morning

8 0
3 years ago
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