All categories

3 years ago

Please help due tn I need this done

Mathematics

1 answer:

Jlenok [28]3 years ago

4 0

(btw if i write 4x^3 it means 4x to the power of 3)

1) (2x+3)(x-2)
2x^2 -4x + 3x -6
2x^2 -x -6

2) x^2 +10x +24
(x+12)(x-2)

3) 6x^2 -13x +6
(2x )(3x ) not sure on this one

4) x^2 +8x +15
(x+3)(x+5)
x= -3 x=-5

5) x^2 -4x -45
(x+5) (x-9)
x=-5 x=9

hope this helps, if you need any help understanding what happens just ask

You might be interested in

Please help I can't work out the gradient

Annette [7]

Answer:

a is 2.5

b is 1

gradient is rise over run

8 0

3 years ago

Erin needs to save a total of $150, she already has $80. What is the fewest number of hours she will need to work if she earns $

harkovskaia [24]

80 divided by 15 Is =5.333333 which I don’t know how to round it but it would be around 5 at least

8 0

3 years ago

5 x + 4y= 16<br> X+y = 3.5<br><br> Find out what each letter is equal to <br> X=<br> Y=

klemol [59]

X=4
Y=-0.5

Do you need an explanation?

5 0

3 years ago

PLEASE HELP! Brainlest!!! Just fill in the chart

Cloud [144]

Answer:

Softball : Speed: 29.68 m/s --- Kinetic Energy: 82.36 Joules

Horse: Speed: 13.33 m/s --- Kinetic Energy: 48,331.40 Joules

Satellite: Speed: 3067.13 m/s --- Kinetic Energy: 3,762,910,000 Joules

I hope this helps! Please give me Brainliest. Sorry for the late response, my power went out.

4 0

3 years ago

Read 2 more answers

Which set of numbers could represent the lengths of the sides of a right triangle?

DiKsa [7]

Answer:

The first set: 8, 15, and 17.

Step-by-step explanation:

By the pythagorean theorem, a triangle is a right triangle if and only if

$\text{longest side}^2 = \text{first shorter side}^2 + \text{second shorter side}^2$ .

In this case,

$\text{longest side}^2 = 17^2 = 289$ .

$\begin{aligned}&\text{first shortest side}^2 + \text{second shortest side}^2 \\ &= 8^2 + 15^2\\ &=64 + 225 = 289 \end{aligned}$ .

In other words, indeed $\text{hypotenuse}^2 = \text{first leg}^2 + \text{second leg}^2$ . Hence, 8, 15, 17 does form a right triangle.

Similarly, check the other pairs. Keep in mind that the square of the longest side should be equal to the sum of the square of the two

Factor out the common factor $2$ to simplify the calculations.

$\text{longest side}^2 = 20^2 = 400$

$\begin{aligned}&\text{first shortest side}^2 + \text{second shortest side}^2 \\ &= 10^2 + 15^2\\ &=100 + 225 = 325 \end{aligned}$ .

$\text{longest side}^2 \ne \text{first shorter side}^2 + \text{second shorter side}^2$ .

Hence, by the pythagorean theorem, these three sides don't form a right triangle.

$\text{longest side}^2 = (2\times 11)^2 = 2^2 \times 121$ .

$\begin{aligned}&\text{first shortest side}^2 + \text{second shortest side}^2 \\ &= (2 \times 6)^2 + (2 \times 9)^2\\ &=2^2 \times(36 + 81) = 2^2 \times 117 \end{aligned}$ .

$\text{longest side}^2 \ne \text{first shorter side}^2 + \text{second shorter side}^2$ .

Hence, by the pythagorean theorem, these three sides don't form a right triangle.

$\text{longest side}^2 = 11^2 = 121$ .

<h3> $\begin{aligned}&\text{first shortest side}^2 + \text{second shortest side}^2 \\ &= 7^2 + 9^2\\ &=49+ 81 = 130 \end{aligned}$ .</h3>

$\text{longest side}^2 \ne \text{first shorter side}^2 + \text{second shorter side}^2$ .

Hence, by the pythagorean theorem, these three sides don't form a right triangle.

6 0

3 years ago