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
drek231 [11]
2 years ago
8

Solve the equation -5 m = -20. a.m = b.m = c.m = -4 d.m = 4

Mathematics
1 answer:
Iteru [2.4K]2 years ago
4 0

Answer:

-5m=-20

or, m= -20 /-5

= 4

hence, d. m = 4

You might be interested in
Ten engineering schools in the United States were surveyed. The sample contained 250 electrical engineers, 80 being women; 175 c
steposvetlana [31]

Answer:

There is a significant difference between the two proportions.

Step-by-step explanation:

The (1 - <em>α</em>)% confidence interval for difference between population proportions is:

CI=(\hat p_{1}-\hat p_{2})\pm z_{\alpha/2}\times\sqrt{\frac{\hat p_{1}(1-\hat p_{1})}{n_{1}}+\frac{\hat p_{2}(1-\hat p_{2})}{n_{2}}}

Compute the sample proportions as follows:

\hat p_{1}=\frac{80}{250}=0.32\\\\\hat p_{2}=\frac{40}{175}=0.23

The critical value of <em>z</em> for 90% confidence interval is:

z_{0.10/2}=z_{0.05}=1.645

Compute a 90% confidence interval for the difference between the proportions of women in these two fields of engineering as follows:

CI=(\hat p_{1}-\hat p_{2})\pm z_{\alpha/2}\times\sqrt{\frac{\hat p_{1}(1-\hat p_{1})}{n_{1}}+\frac{\hat p_{2}(1-\hat p_{2})}{n_{2}}}

     =(0.32-0.23)\pm 1.645\times\sqrt{\frac{0.32(1-0.32)}{250}+\frac{0.23(1-0.23)}{175}}\\\\=0.09\pm 0.0714\\\\=(0.0186, 0.1614)\\\\\approx (0.02, 0.16)

There will be no difference between the two proportions if the 90% confidence interval consists of 0.

But the 90% confidence interval does not consists of 0.

Thus, there is a significant difference between the two proportions.

4 0
3 years ago
the moon is 240,000 miles away from the earth. what is this distance written as a whole number multiplied by the power of ten
Nadusha1986 [10]
Hahqjjwjwjwkwmwwjnwkwkw
4 0
3 years ago
Farmer Gary has 30 flower pots he plants 10 seeds and each pot how many seeds does he plant
Leviafan [203]
You would do 30×10 which equals 300. The answer is 300.
6 0
3 years ago
Read 2 more answers
Let's call a song danceable if it has a danceability of at least 0.7. What is the probability that an individual song has a danc
vfiekz [6]

Answer:

32.54%

Step-by-step explanation:

To determine the probability that an individual song has a danceability of at least 0.7

Applying the excel formula below

=COUNTIF ( I2:I4771,">0.7") / ROWS( I2:I4771)

Hence ; The probability of an individual song having a danceability of at least 0.7 = 32,54%

3 0
3 years ago
Can you please help me with this question ?​
mihalych1998 [28]

Answer:

It is a Cuboid

Area of the base = 12x9

Area of the top = 12x9

Area of the right lateral faces = 9x7

Area of the left lateral faces = 9x7

Area of the front face = 12x7

Area of the rear face = 12x7

Total surface area is the sum of above (please do it yourself)

The volume = base surface Area x height

= 12x9x7 = 756

Be reminded to put in the right unit for Area and volumn

4 0
2 years ago
Read 2 more answers
Other questions:
  • Triangle $PQR$ is isosceles and the measure of angle $R$ is $40^\circ$. The possible measures of angle $P$ are $x,y,z$. What is
    9·1 answer
  • Mrs.Davis bought 6 pounds of grapes for 18 dallors at this rate how much would 72 ounces of grapes have cost
    10·1 answer
  • ohn is interested in purchasing a multi-office building containing five offices. The current owner provides the following probab
    6·1 answer
  • A rectangle has length (4x+<br>5) and breadth 3x.Find the area of the rectangle.​
    7·2 answers
  • More Help on math questions?
    15·2 answers
  • What is m when 3m + 5 = 8
    13·2 answers
  • Gavin, Harry and Isabel each earn the same monthly salary. Each month, Gavin saves 28% of his salary and spends the rest of his
    5·1 answer
  • From families with four children a family is chosen at random. Let X be the number of boys in the family. Calculate and sketch t
    12·1 answer
  • HELPPPP
    6·1 answer
  • Como se faz o cálculo 13÷5,2
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!