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3 years ago

PLZ HELP QUICK ILL MARK BRAINLEIST!!!

Mathematics

1 answer:

lianna [129]3 years ago

3 0

hmm through my critical thinking I belive it's B

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Factor the polynomial by its greatest common monomial factor 20y^6-15y^4+40y^2

stepladder [879]

Answer:

5y^2(4y^4 - 3y^2 +8)

Step-by-step explanation:

20y^6 - 15y^4 + 40y^2

5y^2(4y^4 - 3y^2 +8)

7 0

4 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 $10$

3 0

3 years ago

Read 2 more answers

Fun two consecutive integers whose product is 4 less than the square of the smaller number

Rina8888 [55]

Answer:

Step-by-step explanation:

6 0

3 years ago

What is the height of a pyramid (with a square base) whose side length is 12 cm and its slant

Bingel [31]

We have been given that side length of pyramid the square base is 12 cm and its slant height is 10 cm. We are asked to find the height of the pyramid.

We will use slant height of a pyramid formula to solve our given problem.

$s=\sqrt{h^2+\frac{1}{4}a^2}$ ,where,

s = Slant height,

h = Height,

a = Each side of square base.

Upon substituting our given values in above formula, we will get:

$10=\sqrt{h^2+\frac{1}{4}\cdot 12^2}$

$10=\sqrt{h^2+\frac{1}{4}\cdot 144}$

$10=\sqrt{h^2+36}$

Switch sides:

$\sqrt{h^2+36}=10$

Let us square both sides:

$(\sqrt{h^2+36})^2=10^2$

$h^2+36=100$

$h^2+36-36=100-36$

$h^2=64$

Now we will take positive square root of both sides.

$\sqrt{h^2}=\sqrt{64}$

$h=8$

Therefore, the height of the pyramid is 8 cm and option 'b' is the correct choice.

7 0

3 years ago

If 5x-7=13, what is the value of 10x-14

Andrej [43]

Step-by-step explanation:

5x - 7 = 13

5x = 13 + 7

5x = 20

x = 20 ÷ 4 = 5

10x - 14

10(5) - 14 = 50 - 14 = 36

3 0

4 years ago