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
Nimfa-mama [501]
3 years ago
5

Solve for r. - 17 +r = 42

Mathematics
2 answers:
zysi [14]3 years ago
8 0
-17+r=42
-17+r+17=42+17
r=59
Vaselesa [24]3 years ago
7 0

Answer:

R = 25

Step-by-step explanation:

You might be interested in
The physical plant at the main campus of a large state university recieves daily requests to replace florecent lightbulbs. The d
krek1111 [17]

Answer:

34%

Step-by-step explanation:

According to the empirical rule, 68% of all of the data in a normal distribution falls within one standard deviation of the mean.

Applying to this particular case, 68% of the requests fall within (50 - 7) and (50+ 7). The percentage of requests from 43 to 50 is equal to the percentage of requests from 50 to 57.

Therefore, the percentage of light bulb replacement requests numbering between 50 and 57 is 68/2 =  34%.

8 0
4 years ago
Y = -2x + 5 &amp; y = x - 1<br> Use the Equal Values Method to solve for x and y
ikadub [295]
X-1=-2x+5
X=2

Y=-2(2) + 5
Y= 1
4 0
3 years ago
Which ratio is greater? 3 : 4 or 5:6​
olga55 [171]

Answer:

5:6 is greater than 3:4.

4 0
3 years ago
The ages of trees in a forest are normally distributed with a mean of 25 years and a standard deviation of 4. Approximately what
harkovskaia [24]

Answer:

78.88%

Step-by-step explanation:

We have been given that

\mu=25,\sigma=4,x_1=20,x_2=30

The z-score formula is given by

z-\text{score}=\frac{x-\mu}{\sigma}

For x_1=20

z_1=\frac{20-25}{4}\\\\z_1=-1.25

For x_2=30

z_2=\frac{30-25}{4}\\\\z_2=1.25

Now, we find the corresponding probability from the standard z score table.

For the z score -1.25, we have the probability 0.1056

For the z score 1.25, we have the probability 0.8944

Therefore, the percent of the trees that are between 20 and 30 years old is given by

0.8944 - 0.1056

= 0.7888

=78.88%

6 0
4 years ago
Read 2 more answers
If a circle has a diameter of 16 feet, which expression gives its area square feet?
kramer

Answer:

C. 8² ·π

Step by Step Explanation:

A=πr²

6 0
3 years ago
Other questions:
  • Amie published her first book. She was given $20,000 and an additional $0.15 for each copy that sold. Her earnings,d, in dollars
    6·2 answers
  • What is 25 percent of 80
    14·2 answers
  • Determine the unknown measures of the triangle shown. Round to the nearest tenth, if necessary. x = in. y ≈ ° z ≈ °
    11·2 answers
  • Explain why it is not reasonable to say that 4.23is less than 4.13
    10·2 answers
  • A batch of snack mix made of dried fruit and nuts contain 744G of nuts the ratio of nuts to dried fruit by weight is 12 to 13 ho
    11·1 answer
  • Greg calculated that he had to drive at least 50 miles per hour on the highway to get his destination in the time that he has. w
    8·1 answer
  • Solve for V . 7v-20=-6(v-1) Simplify your answer as much as possible.
    7·2 answers
  • You are looking for a new cell phone plan. The first company, Cellular-Tastic (f), charges a
    7·1 answer
  • Which of the following terms best describes the graph of the exponential
    15·1 answer
  • (19−7)^( (2) ) −8*3+4*3−5
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!