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
Sonja [21]
3 years ago
13

Select the correct answer.

Mathematics
1 answer:
juin [17]3 years ago
7 0

Answer:

81

Step-by-step explanation:

\sqrt{x}  + 3 = 12 \\  \\  \sqrt{x}  = 12 - 3 \\  \\  \sqrt{x}  = 9 \\  \\  {( \sqrt{x} )}^{2}  =  {(9)}^{2}  \\  \\ x = 81

You might be interested in
Find the zero of the function f (x) = -2x +2.
Zielflug [23.3K]

Answer:0 = 3x - 21

Step-by-step explanation:

From this given function we can take an  

x

common from its expression

i.e  

x

2

−

6

x

 

=

x

(

x

−

6

)

As we know that the product of two numbers is zero,when either one of them is zero

then in the above expression that we just factorised

the function can be zero when either  

x

=

0

or when  

x

=

6

i.e when  

x

=

0

,  

0

(

0

−

6

)

=

0

 

when  

x

=

6

,  

6

(

6

−

6

)

 

=

6

(

0

)

Finally, our prize of all that math, the zeroes of the function are  

0

and  

6

these numbers are called the zeroes of the function because when you put these values in  

x

the function gives zero.

6 0
3 years ago
Write the equation that passes through the following points:<br><br> (5,0) and (−10,−5)
Vikentia [17]

Answer:

The answer is:

y =  \frac{1}{3} x -  \frac{5}{3}

Step-by-step explanation:

❃Incase you forgot what the linear equation formula is ☟

y = mx + b

❃Incase you also forgot, The is what the slope formula is ☟

m = \frac{y_2 - y_1 }{x_2 - x_1}

➊ First: We are going to be solving for the slope.

m = \frac{  - 5 - 0}{ - 10 - 5} = \frac{ - 5}{  - 15} =  \frac{1}{3}

➋Second: We find the y-intercept.

y = mx + b \\ 0 =  \frac{1}{3} (5) + b \\ 0 =  \frac{5}{3}  + b \\ \frac{  -   \frac{5}{3}  =  -  \frac{5}{3 }   \:  \:  \:  \:  \:  \:  \: \: \: \: \: \: }{  -  \frac{5}{3}  = b}

➌Third: Plug in.

y =  \frac{1}{3} x -  \frac{5}{3}

4 0
3 years ago
What is the answer please show work 7x + 4 = 5x + 10
RSB [31]

Answer:

x=3

Step-by-step explanation:

subtract 5x from 7x

subtract 4 from 10

divide 2x and 6 by 2

7 0
3 years ago
Read 2 more answers
Mark buys a wooden board that is feet long. The cost of the board is $1.50 per 5 1/4 foot, including tax. What is the total cost
Lelechka [254]
It would just be the tot foot time the cost

7.5 X 0.50 = $3.75
8 0
3 years ago
A random sample selected from an infinite population is a sample selected such that each element selected comes from the same __
bulgar [2K]

Answer: population; independently

Step-by-step explanation:

A random sample selected from an infinite population is a sample selected such that each element selected comes from the same *population* and each element is selected *independently*.

3 0
3 years ago
Other questions:
  • PLEASE HELP!!!!!!!
    6·1 answer
  • Help me with this please!!
    15·1 answer
  • The larger of two consecutive ODD numbers is one less than twice the smaller number. Find the larger of the two numbers.
    5·1 answer
  • Joseph earned $53 the first week he worked at Jim’s Candy Store and $62 the next week. How much did Joseph earn his first two we
    6·1 answer
  • I need help with 5-6
    15·1 answer
  • 60 is what percent of 90?
    5·2 answers
  • 7. The largest living thing on earth is a California sequoia tree named the “General Sherman”. The diameter of the tree at the b
    8·1 answer
  • Math question for 5 graders.
    8·2 answers
  • Which graph shows a linear function?
    7·1 answer
  • Find the area of a circle with diameter, d = 9.4m. Give your answer rounded to 1 DP.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!