1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vivado [14]
3 years ago
9

Which of the following are solutions to the equation below? Check all that apply. 9x2 – 64 = 0

Mathematics
2 answers:
erik [133]3 years ago
6 0

Answer:

x= 8/3 and x= -8/3

Step-by-step explanation:

Remember the difference of two squares method

a²- b²= (a+b) (a-b)

Given;

9x²-64=0

We notice 9 and 64 are in square form thus can be written as

(3x-8) (3x+8)....................................applying the difference in squares method to simplify

Solving for x

(3x-8) (3x+8) =0

3x-8=0

3x=8

x= 8/3

or

3x+8=0

x= -8/3

Andrej [43]3 years ago
6 0

Answer:

8/3 and -8/3

Step-by-step explanation:

You might be interested in
IF YOU SOLVE FIRST YOU GET BRAINLIEST
Nonamiya [84]

I solved 2/5(x − 2) = 4x. I don't know why you included those extra numbers.

<u>-2/9</u>

7 0
3 years ago
Two angles are complementary angles if the sum of their measure is 90 degrees. Angle A and angle B are complementary angles, and
Marta_Voda [28]
Let's solve this problem step-by-step.

STEP-BY-STEP SOLUTION:

We will be using simultaneous equations to solve this problem.

First we will establish the equations which we will be using as displayed below:

Equation No. 1 -

A + B = 90°

Equation No. 1 -

A = 2B + 12

To begin with, let's make ( A ) the subject in the first equation as displayed below:

Equation No. 1 -

A + B = 90

A = 90 - B

Next we will substitute the value of ( A ) from the first equation into the second equation and solve for ( B ) as displayed below:

Equation No. 2 -

A = 2B + 12

( 90 - B ) = 2B + 12

- B - 2B = 12 - 90

- 3B = - 78

B = - 78 / - 3

B = 26°

Then we will substitute the value of ( B ) from the second equation into the first equation to solve for ( A ) as displayed below:

A = 90 - B

A = 90 - ( 26 )

A = 64°

ANSWER:

Therefore, the answer is:

A = 64°

B = 26°

Please mark as brainliest if you found this helpful! :)
Thank you <3
4 0
3 years ago
What's the answer people. Please help me
Shalnov [3]
Yes it is true........
5 0
3 years ago
Read 2 more answers
How to solve a log equation with variable in the exponent?
GREYUIT [131]
Example...

4^x = 16
log(4^x) = log(16)
x*log(4) = log(16)
x = log(16) / log(4)
6 0
3 years ago
Hellppp im so stuck
77julia77 [94]

35= 5,000

45=15,000

55=50,000

3 0
3 years ago
Other questions:
  • What is the value of x in the diagram? A. 100 B. 60 C. 50 D. 120
    14·2 answers
  • If 30+12x represents the area of a partitioned rectangle, what could be expressions for the side lengths? List at least 5 possib
    15·1 answer
  • How many servings of<br> cups are in 33 cups of ice cream?
    12·1 answer
  • P − 4.8 less than or = to 6.
    11·2 answers
  • Exactly how many planes contain points J, K, and N?<br> 0<br> 1<br> 2<br> 3
    10·2 answers
  • Two trains leave stations 442 miles apart at the same time and travel toward each other. One train travels at 75 miles per hour
    5·1 answer
  • X+3, -2x^(2)-6x, 4x^(3)+12x^(2) what is the 8th term in this geometric sequence
    9·1 answer
  • Please help asap!!!!
    13·1 answer
  • The larger of two numbers is 4 more than 2 times the smaller number. If the sum of the two numbers is 28, what is the larger num
    11·1 answer
  • Please help thank u
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!