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
notsponge [240]
2 years ago
15

NEED HELP DUE TODAY!!!​

Mathematics
1 answer:
Rainbow [258]2 years ago
4 0

Answer:

50 minutes

Step-by-step explanation:

x=9

(5x9+5)+9+13=72

50+9+13=72

59+13=72

5x9=45

45+5=50

You might be interested in
Plz help will give brainliest!
natita [175]

Answer:

8.7

Step-by-step explanation:

4 0
2 years ago
In mrs.baes class only 15 boys go to the bathroom at a time 13 girls at a time.there is 50 boys and 20 girls how boys altogeter
Stella [2.4K]
70 kids altogether because 50+20 is 70
5 0
3 years ago
What is 1/5 expressed as a percent? A. 10% B. 20% C. 30% D. 50%
Serggg [28]

Answer:

I'm pretty sure it's B.20%

8 0
3 years ago
Read 2 more answers
A set of city temperatures in April are normally distributed with a mean of 19.7 degrees Celsius and a standard deviation of 2 d
Sati [7]

Answer:

19.77% of average city temperatures are higher than that of Cairo

Step-by-step explanation:

Problems of normally distributed samples are solved using 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 = 19.7, \sigma = 2

What percentage of average city temperatures are higher than that of Cairo?

This is 1 subtracted by the pvalue of Z when X = 21.4.

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

Z = \frac{21.4 - 19.7}{2}

Z = 0.85

Z = 0.85 has a pvalue of 0.8023

1 - 0.8023 = 0.1977

19.77% of average city temperatures are higher than that of Cairo

6 0
2 years ago
How many solutions can be found for the system of linear equations represented on the graph?
Alexxandr [17]
Answer: D) infinitely many solutions

Explanation: because the lines overlap each other every single point is a solution, therefore infinitely many solutions
3 0
3 years ago
Other questions:
  • create a problem about the estimated cost of ingredients for the recipe if onion cost 2.99 stats lb and pork cost $5.49 lb. incl
    5·1 answer
  • Giving 90 points please
    8·2 answers
  • A candle is 6 inches tall and burns at a rate of one half an inch per hour. Write an equation to represent the situation.
    6·2 answers
  • if a line crosses the y-axis at (0, 1) and has a slope of `4/5`, what is the equation of the line? A. 4y − 5x = 5 B. y − 4x = 5
    12·2 answers
  • If Target Corp. (TGT) recently earned a profit of $6.07 earnings per share and has a P/E ratio of 16.5. The dividend has been gr
    6·1 answer
  • In the equation b =25 +8. what is the next step in the equation solving sequence?
    14·2 answers
  • I NEED A FRIEND IN K12 7TH GRADE
    12·1 answer
  • I'm confused, please help. :/
    8·2 answers
  • Which formula would be used to find the measure of angle 1? One-half(a° b°). One-half(a° – c°). One-half(b° c°). One-half(a° – b
    5·1 answer
  • Please help, much appreciated!!!! (will mark brainliest)
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!