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3 years ago

Which two values of x are roots of the polnomial below?

Mathematics

1 answer:

Ipatiy [6.2K]3 years ago

8 0

Plug in the numbers into the formula opposite b plus or minus the square root of b^2 -4(a)(c) all over 2(a)
6+or - square root 6^2 -4(4)(1) all over 8
the answer choices are 6+ square root 20 over 8 and 6-square root 20 over 8
Sorry I can't figure out how to type it out better for you without all the symbols I need.
A and D

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Read 2 more answers

Y = -1/5x + 3 ; (2,8)

Bad White [126]

8=-1/5(2)+3
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3 years ago

Ok for this one im really stuck and i need help.just want to make sure i understand this one.

tangare [24]

Answer:

70 - 5√10 ft²

Explanation:

Perimeter is the distance around a two-dimensional shape.

area of rectangle: length x width

Here given:

length: (3√2 + 4√5) ft

width: (-5√2 + 5√5) ft

Solve for perimeter:

length x width

(3√2 + 4√5) x (-5√2 + 5√5)

apply distributive method

(3√2)(-5√2) + (3√2)(5√5) + (4√5)(-5√2) + (4√5)(5√5)

multiply

-15(2) + 15√10 -20√10 + 20(5)

combine

-30 -5√10 + 100

simplify

70 - 5√10

4 0

2 years ago

Two thirds of a number is no more than -10

Aliun [14]

Let x be the number in the problem. When it states that x is "no more than -10", it means than it is less than or equal to -10. So, we have

$\frac{2}{3}$ x≤-10

In order to cancel out the $\frac{2}{3}$ on the left and isolate x, we multiply both sides by $\frac{3}{2}$ (since $\frac{3}{2}$ · $\frac{2}{3}$ =1). Thus, we have

x≤-10· $\frac{3}{2}$ =-15

Therefore, x≤-15

7 0

3 years ago