2 years ago

8x – 65 = - x2 [pease help me

Mathematics

1 answer:

Leya [2.2K]2 years ago

4 0

Answer: x=5 or x=−13

Step-by-step explanation:

8x−65=−x2

8x−65−(−x2)=−x2−(−x2)

x2+8x−65=0

(x−5)(x+13)=0

x−5=0 or x+13=0

x=5 or x=−13

You might be interested in

Ray Cupple bought a basic car costing $26,500.00, with options costing $725.00. There is a 6% sales tax in his state and a combi

Alenkinab [10]

Given:
cost:        26,500
option:    <u>     725</u>
total    27,225
tax (27,225 * 6%)<u>   1,633.50</u>
total 28,858.50
license & reg. fee <u> 50.00</u>
total cost 28,908.50 Choice D.

5 0

2 years ago

Read 2 more answers

Ashley uses 1/2 cup of melted butter to spread equally on 12 slices of toast. How much melted butter is on each slice of toast?

Sholpan [36]

Answer: 1/24

Step-by-step explanation:

1/2 divided by 12

3 0

2 years ago

What is the length of AC?

MatroZZZ [7]

The sin <ABC means that AC/AB. So we know AB=34. AC/AB=8/17. So the length of AC is 16. cos<ABC means BC/AB. tan<ABC means AC/BC.

8 0

2 years ago

Read 2 more answers

The base of a triangle is twice its hypotenuse, the sine of the angle opposite to its base is

svetoff [14.1K]

The answer b= 2h
the angle opposite to its base is a
so sina = b/2h= b/b=1
the answer is <span>b) 1</span>

6 0

2 years ago

Read 2 more answers

HELP ME PLEASE, i will give brainliest

max2010maxim [7]

Based on the right angle triangle and the given parameters, cos K = 5/13

<h3>Trigonometric ratios</h3>

sin = opposite / hypotenuse

cos = adjacent / hypotenuse

Tan = opposite / adjacent

Given parameters:

Hypotenuse = 13
Adjacent = 5
Opposite = 12

Therefore,

cos K = adjacent / hypotenuse

cos K = 5/13

Learn more about right triangle:

brainly.com/question/2217700

#SPJ1

6 0

1 year ago