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
vovikov84 [41]
2 years ago
11

If x2 = 81, what are the TWO answers?

Mathematics
2 answers:
Sphinxa [80]2 years ago
8 0
Your answer is 9, -9
nika2105 [10]2 years ago
4 0

Answer:

9 and -9

Step-by-step explanation:

You might be interested in
Molly was on a long 136 mile road trip. The first part of the trip there was lots of traffic, she only averaged 16 mph. The seco
Mazyrski [523]

Answer:

In traffic, she drove for 3 hours

and After the traffic cleared she drove for 2 hours.

Explanation:

Given that the road trip was 136 miles;

d=136

The first part of the trip there was lots of traffic, she only averaged 16 mph;

v_1=16

The second part of the trip there was no traffic so she could drive 44 mph;

v_2=44

She traveled for a total of 5 hours;

t=5

let x represent the time in traffic when she traveled at 16 mph

t_1=x

the time the traffic is clear would be;

t_2=t-t_1=5-x

Recall that distance equals speed multiply by time;

d=v_1t_1_{}_{}^{}+v_2t_2

substituting the values;

136=16x+44(5-x)

solving for x;

\begin{gathered} 136=16x+220-44x \\ 44x-16x=220-136 \\ 28x=84 \\ x=\frac{84}{28} \\ x=3 \end{gathered}

So;

\begin{gathered} t_1=3\text{ hours} \\ t_2=5-x=5-3=2 \\ t_2=2\text{ hours} \end{gathered}

Therefore, In traffic, she drove for 3 hours

and After the traffic cleared she drove for 2 hours.

7 0
1 year ago
Ella's grandmother sewed her a change purse. When she gifted it to her, Ella counted 23 coins already in it. Ella noticed there
juin [17]
The answer to this problem is 17dimes
5 0
2 years ago
Read 2 more answers
you bought 4 pairs of socks @ 2.29 each and one cap @ 5.98. With a sales tax of 4%, what was the total amount of the purchase?
coldgirl [10]
The Total amount should be $15.71
5 0
3 years ago
Read 2 more answers
Yolanda participated in a walkathon in which each kilometer walked raised $10 for charity. Her goal was to raise more than $300
KiRa [710]

Answer:

B

Step-by-step explanation:

She needed to raise at least $250

$250 divided by $10 equals 25 km

So she need more than 25km to raise over $300

3 0
3 years ago
The weather report says the temperature is 20°c and will drop 5°c per hour for the next 6 hours. Daryl plans to be gone at least
lubasha [3.4K]

The inequality equation will be -5x + 20 < -10.

<h3>What is inequality?</h3>

Inequality is defined as an equation that does not contain an equal sign.

The weather report says the temperature is 20°c and will drop 5°c per hour for the next 6 hours.

Daryl plans to be gone at least 6 hours, and he has a plant outside.

If he wants the plant to remain in temperatures above -10° should Daryl move the plant to a warmer location before leaving will be

The inequality equation will be

-5x + 20 < -10

where x is the number of hours.

Then we have

-10 < -5x + 20

5x > 30

   x > 6 hours

More about the inequality link is given below.

brainly.com/question/19491153

#SPJ1

5 0
1 year ago
Other questions:
  • Shavon is going to wrap a box that is shaped like a rectangular prism. The box is 12 inches long, 8 inches wide, and 3 inches hi
    12·1 answer
  • I hate math and I have no idea what the answer is
    5·1 answer
  • 12 2/3 ^ 2 1/3what is 12 2/3 divided by 2 1/3 ​
    13·1 answer
  • The Pave the Way Company is installing a new walkway. The installer uses 13 paving stones for every foot of walkway. He needs 11
    8·1 answer
  • The price of an article on sale was 70% of the regular price. If the sale price was $28, what was the regular price?
    5·1 answer
  • Simplify i^15. (imaginary numbers to the 15th power)
    7·1 answer
  • You drink a cup of coffee with 120 mg of caffeine. Each
    7·1 answer
  • What are the vertex and x-intercepts of the graph of the function below?
    8·1 answer
  • Need help on this to!! thanks &lt;33
    13·2 answers
  • A school store buys pencils in bulk and sells them to students for a small profit. The school pays $2.00 for 100 pencils and sel
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!