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2 years ago

8

PLSS HELPPP 20 POINTS

2 answers:

Maurinko [17]2 years ago

7 0

Answer:

a

Step-by-step explanation:

just did it

mariarad [96]2 years ago

7 0

Answer:the 2nd one is the answer it's easy I just did it :

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6x2y – 2x2y – 10x2y + 8x2y =

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Answer:

4y is your answer........

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2 years ago

What is the value of x in simplest radical form?

Ostrovityanka [42]

In this case, we will use our Pythagorean Theorem.

a = 84
b = 13
c = x

$\sqrt{84^2 + 13^2} = 85$

Thus, x = 85.

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The hospital shop buys cereal bars in boxes of 4.

Korolek [52]

First, you divide 58 bars by 4. The answer will be 14 boxes with 2 bars remaining in the box.

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2 years ago

Isoke is solving the quadratic equation by completing the square.10x2 + 40x – 13 = 0 10x2 + 40x = 13 A(x2 + 4x) = 13What is the

Elina [12.6K]

we have

$10x^{2} + 40x - 13 = 0$

Group terms that contain the same variable, and move the constant to the opposite side of the equation

$10x^{2} + 40x =13$

Factor the leading coefficient

$10(x^{2} + 4x) =13$ ----------> the value of A is $10$

Complete the square. Remember to balance the equation by adding the same constants to each side

$10(x^{2} + 4x+4) =13+40$

$10(x^{2} + 4x+4) =53$

Rewrite as perfect squares

$10(x+2)^{2} =53$

$10(x+2)^{2} =53 \\ (x+2)^{2} =\frac{53}{10} \\ \\ x+2=(+/-)\sqrt{\frac{53}{10}} \\ \\ x1=-2+\sqrt{\frac{53}{10}}\\ \\ x2=-2-\sqrt{\frac{53}{10}}$

therefore

the answer is

the value of A is $10$

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2 years ago

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