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
kolbaska11 [484]
3 years ago
10

9) Three times a number added to 12 gives -6. Find the number.​

Mathematics
2 answers:
KatRina [158]3 years ago
7 0

Answer:

The number is -6.

Step-by-step explanation:

Variable x = a number

Set up an equation:

3x + 12 = -6

Isolate variable x:

3x = -18

x = -6

Check your work:

3(-6) + 12 = -6

-18 + 12 = -6

-6 = -6

Correct!

Rudik [331]3 years ago
4 0

Answer:

3x +12=-6

3x=-6-12

3x=-18

x=-18/3

x=-6

You might be interested in
A washer and dryer cost a total of $1152. The cost of the washer is two times the cost of the dryer. Find the cost of each item.
ASHA 777 [7]

Answer: 576 for both

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
What should be added to -2 1/9 to get 11
ki77a [65]

Answer:

u should add 118/9

Step-by-step explanation:

please mark me as brainlest

4 0
1 year ago
What conversion factor would you use to solve the problem 37in=_ft
Yakvenalex [24]
1 foot = 12 inches

Conversion factor is 12
7 0
3 years ago
Read 2 more answers
Work out <br> m<br> and <br> c<br> for the line:<br> y<br> =<br> 3<br> −<br> x
motikmotik

Answer:

3x

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Assume that the random variable X is normally distributed, with mean 60 and standard deviation 16. Compute the probability P(X &
elixir [45]

Answer:

P(X < 80) = 0.89435.

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

\mu = 60, \sigma = 16

P(X < 80)

This is the pvalue of Z when X = 80. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{80 - 60}{16}

Z = 1.25

Z = 1.25 has a pvalue of 0.89435.

So

P(X < 80) = 0.89435.

5 0
3 years ago
Other questions:
  • 7/8,0.98,8/9 least to greatest
    10·1 answer
  • What is ​ −3/5−(−2/5) ​
    7·1 answer
  • What is mixed number of 23/10
    13·2 answers
  • How to determine if a equation is a inequality
    8·1 answer
  • Through what fraction of circle did the minute hand turn
    13·1 answer
  • You need to purchase centerpieces for no more than 12 tables at Prom. There is a
    10·1 answer
  • 10 divided by 2 and 1/4
    5·2 answers
  • the u.s. is 3.794 million square miles approximately 650000 square miles are work for food production what percent of the u.s. i
    7·1 answer
  • I need your help on geometry finals question 14
    10·2 answers
  • Unit 5 part 2. K12. <br> Who killed were and how.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!