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Dima020 [189]
3 years ago
10

What are the factors of x^2-8x-20

Mathematics
1 answer:
kipiarov [429]3 years ago
6 0

Answer:

(x+2)(x−10)

Step-by-step explanation:

x^2-8x-20

Factoring means  something like  this:

(x+_)(x+_)

Add together to get -8

Multiply together to get -20

think of the two numbers

Try 2 and -10:

2+-10 = -8

2*-10 = -20

Fill in the blanks of  with 2 and -10 to get

(x+_)(x+_) = (x+2)(x−10)

I hope it's right!

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Step-by-step explanation:

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6 0
3 years ago
X³+y³+z³= <br>(pls help its important )​
Inga [223]

Answer: It equals the same because you can't factor variables that are different.

8 0
3 years ago
Angle A is circumscribed about circle O.<br> What is the measure of D?
Mariana [72]

Answer:

m<D=50

Step-by-step explanation:

The reason is that ABOC is a quadrilateral, so its angle add up to 360*. Each of the tangent angles, <ABO and <ACO, has a measure of 90*.

m<ABO + m<ACO + m<A + m<O = 360

90 + 90 + m<A + m<O = 360

m<A + m<O = 180

80 + m<O =180

m<O = 100

If the measure of central angle <O is 100*, what is the measure of inscribed <D?

The measure of a central angle is equal to the measure of the arc it intercepts. If m<O = 100*, then m BC = 100.

The measure of an inscribed angle is half of the measure of the arc it intercepts. If m BC = 100*, then m<D = 50

m<D=50

7 0
3 years ago
PLEASE SOLVE THE QUESTIONS (WILL MARK BRANLIEST)
mel-nik [20]

Answer:

a) 4⁻³ = 1/64 = 0.015625

b)13⁻² = 1/169 = 0.0059171598

c)(-3)⁻² = 1/-3² = 0.1111111111

Step-by-step explanation:

To solve the question above, when we have an integer ( positive or negative) that is raised to a negative power, this means the reciprocal of that integer raised to the positive power

Example:

a⁻ⁿ = 1/aⁿ

a) 4⁻³ = 1/4³

= 1/(4 × 4 × 4)

= 1/64

= 0.015625

b) 13⁻² = 1/13²

= 1/(13 × 13)

= 1/169

= 0.0059171598

c)(-3)⁻² = 1/-3²

= 1/(-3 × -3)

= 1/9

= 0.1111111111

7 0
4 years ago
If three times a certain number is increased by 4 the results is 28. what is the number
dem82 [27]

the number is 8 because the equation is (x * 3) + 4 so replace x with (8) and its (8 * 3) + 4 = 28 :)

6 0
4 years ago
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