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
Basile [38]
3 years ago
6

There were 685 hot air balloon pilots at a hot air balloon race. There were 1,570 more ground crew

Mathematics
1 answer:
Zielflug [23.3K]3 years ago
8 0

Answer:

2225 I think just do 685+1570

You might be interested in
What is the area and perimeter?
padilas [110]

Answer:

Step-by-step explanation:

Area is 10x10=100+6x5=130

perimeter is 14+10+10+4+5+6

4 0
3 years ago
Question is in the picture
ANTONII [103]

Answer:

She forgot to flip the inequality sign when dividing both sides by -4

8 0
2 years ago
Read 2 more answers
-7x^3-9x^2+8x this is factoring completely
loris [4]
Answer:
<span> (x + 6) • (x + 5) • (x - 2)

Is this what u were looking for? Sorry if not XDD

</span>
3 0
3 years ago
Read 2 more answers
est scores for a statistics class had a mean of 79 with a standard deviation of 4.5. Test scores for a calculus class had a mean
Arte-miy333 [17]

Answer:

The z-score for the statistics test grade is of 1.11.

The z-score for the calculus test grade is 7.3.

Due to the higher z-score, the student performed better on the calculus test relative to the other students in each class

Step-by-step explanation:

Z-score:

In a set with mean \mu and standard deviation \sigma, the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

In this question:

The grade with the higher z-score is better relative to the other students in each class.

Statistics:

Mean of 79 and standard deviation of 4.5, so \mu = 79, \sigma = 4.5

Student got 84, so X = 84

The z-score is:

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

Z = \frac{84 - 79}{4.5}

Z = 1.11

The z-score for the statistics test grade is of 1.11.

Calculus:

Mean of 69, standard deviation of 3.7, so \mu = 69, \sigma = 3.7

Student got 96, so X = 96

The z-score is:

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

Z = \frac{96 - 69}{3.7}

Z = 7.3

The z-score for the calculus test grade is 7.3.

On which test did the student perform better relative to the other students in each class?

Due to the higher z-score, the student performed better on the calculus test relative to the other students in each class

7 0
3 years ago
Answer please please​
sveta [45]

Answer:

What is the question?

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Other questions:
  • gas cost $3.53 per gallon in may. in september, gas cost $3.05 per gallon. what was the percent change in the cost of a gallon o
    11·2 answers
  • Mark has taken four tests so far this quarter. His grades were 88%, 95%, 80%, and 92%. What is the mean of his test scores?
    14·1 answer
  • If a coin is flipped 3 times what is the probability of getting heads at least once
    12·2 answers
  • Expand 5x(5y + 7)<br><br><br><br><br><br><br><br><br> ......
    14·2 answers
  • Order the numbers from least to<br> greatest.<br> 1.5, 1.27, 1.4, 1.05 , 1.07 , 1.44
    8·1 answer
  • A student got a juice box for $2.50 and some bags of chips for $0.85 each bag. The total cost was $5.05. What equation can be us
    5·2 answers
  • PLEASE HELP!!
    6·2 answers
  • Suppose the standard deviation of a given population is 10. What is the standard deviation of sample mean within a random sample
    14·1 answer
  • For brainliest!! With solution needed !! (Dividing polynomials) problem in picture!!
    7·1 answer
  • Original Equation:8 - 7x^2 + 3 = 4x^2 - 1Frist step:11 - 7x^2 = -4x^2 - 1Which property justifies the first step?A. Division pro
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!