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
svetoff [14.1K]
3 years ago
8

The sum of 69 and 42 is five more than the difference of 146 and a number. Calculate the value of the unknown number.

Mathematics
1 answer:
Len [333]3 years ago
5 0
As an equation, we have:
69+42=5+(146-x)

You just have to simplify:

111=5+(146-x)
106=146-x
-40=-x
40=x

Your unknown number is 40
You might be interested in
A nutrition laboratory wants to construct a 95% confidence interval for the mean sodium content of "reduced sodium" hot dogs. A
tatuchka [14]

Answer:

n > 96

Therefore, the number of samples should be more than 96 for the width of their confidence interval to be no more than 10mg

Step-by-step explanation:

Given;

Standard deviation r= 25mg

Width of confidence interval w= 10mg

Confidence interval of 95%

Margin of error E = w/2 = 10mg/2 = 5mg

Z at 95% = 1.96

Margin of error E = Z(r/√n)

n = (Z×r/E)^2

n = (1.96 × 25/5)^2

n = (9.8)^2

n = 96.04

n > 96

Therefore, the number of samples should be more than 96 for the width of their confidence interval to be no more than 10mg

6 0
3 years ago
Square inch for 30 stones
Anna71 [15]

1 stone = 20 square inches

1 stone * 30 = 20 square inches * 30

30 stones = 600 square inches

8 0
3 years ago
(0.6) with a sqare root of 2
stira [4]

Answer:

0.36

Step-by-step explanation:

0.6 squared is 0.36

it is essentially 6 times 6 but as a decimal

6 0
2 years ago
A newspaper provided a​ "snapshot" illustrating poll results from 1910 professionals who interview job applicants. The illustrat
Darya [45]

Answer:

confidence level is missing

Step-by-step explanation:

<em>1.confidence level  </em>

The results can be given only in a predetermined confidence level

<em>2. point estimate</em>

The illustration states the estimate 26% of the professionals who interview job applicants said the biggest interview turnoff is that the applicant did not make an effort to learn about the job or the company.

<em>3.sample size</em>

Sample size is given as 1910 people

<em>4.confidence interval </em>

Confidence interval is given ±3 around the point of estimate

3 0
3 years ago
A dance club ordered shoes for all of its members. The shoe sizes are shown in the table.
Kamila [148]
The sample mean is the sum of the sample values divided by the number of them:
  (7 +7 +10 +6 +9 +6 +8 +7.5 +8.5 +8)/10 = 77/10 = 7.7

The sample mean is 7.7.
5 0
3 years ago
Read 2 more answers
Other questions:
  • Determine the slope and the y-intercept. y = -5/2x - 2
    11·1 answer
  • What is next letter BE GJ LO QT
    15·1 answer
  • Kenji buys 3 yards of fabric for $7.47 then he realizes that he needs 2 more yards how much would the extra fabric cost
    9·2 answers
  • 31.447 to nearest tenth
    10·2 answers
  • 1/3 (6y - 9) = -2y + 13
    6·1 answer
  • I’m just not too sure with this question?
    6·1 answer
  • Which pair of lines are perpendicular lines?
    10·1 answer
  • What is the length of AC? ​
    14·1 answer
  • Find the slope of the line passing through the points using the slope formula
    6·1 answer
  • Help anyone can help me do this question,I will mark brainlest. The question is find the area of the shaded region.​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!