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
wolverine [178]
3 years ago
7

On her first two quizzes Barbara averaged nine correct answers on the next 3 quizzes she averaged 10 correct answers what decima

l number shows Barbara's average score on all five quizzes
HELP ASAP​
Mathematics
1 answer:
kolbaska11 [484]3 years ago
4 0

Answer:

0.98

Step-by-step explanation:

Assuming the number of questions on all the tests is 10,

9+9+10+10+10 / 50

You get 50 by doing 5 quizzes x 10 questions per quiz.

48/50 = 0.98

You might be interested in
What is the volume of a cylinder with a height of 7.1 ft and a base with a diameter of 12.8 ft, to the nearest tenth of a cubic
Semenov [28]

Answer:

V=π(d

2)2h=π·(12.8

2)2·7.1≈913.62541ft³ Step-by-step explanation: because i said so

7 0
3 years ago
The line width used for semiconductor manufacturing is assumed to be normally distributed with a mean of 0.5 micrometer and a st
Alinara [238K]

Answer:

There is a 0.82% probability that a line width is greater than 0.62 micrometer.

Step-by-step explanation:

Problems of normally distributed samples can be 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}

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. The sum of the probabilities is decimal 1. So 1-pvalue is the probability that the value of the measure is larger than X.

In this problem

The line width used for semiconductor manufacturing is assumed to be normally distributed with a mean of 0.5 micrometer and a standard deviation of 0.05 micrometer, so \mu = 0.5, \sigma = 0.05.

What is the probability that a line width is greater than 0.62 micrometer?

That is P(X > 0.62)

So

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

Z = \frac{0.62 - 0.5}{0.05}

Z = 2.4

Z = 2.4 has a pvalue of 0.99180.

This means that P(X \leq 0.62) = 0.99180.

We also have that

P(X \leq 0.62) + P(X > 0.62) = 1

P(X > 0.62) = 1 - 0.99180 = 0.0082

There is a 0.82% probability that a line width is greater than 0.62 micrometer.

3 0
3 years ago
Find the value of x.
vredina [299]

Answer:

77

Step-by-step explanation:

a tirangle has 180 degrees so 180-53-50=77

and x value is 77, that is easy.

3 0
3 years ago
A mirror is the shape of an ellipse defined by y^2/7.29 + x^2/6.25 = 1 with units in feet. Which statement identifies the
hodyreva [135]

Answer:

The mirror has a vertical orientation and is 5.4 ft tall.

Step-by-step explanation:

Took the test

4 0
3 years ago
Read 2 more answers
Which point is located at
Andrew [12]

Answer:

The question is not complete

3 0
3 years ago
Other questions:
  • What would you see at the wedding of Betty Crocker and the pillsbury dough boy
    10·1 answer
  • 3. Convert 5.2 gallons to<br> cups
    6·1 answer
  • Factor the expression completely.<br> 8x + 64
    6·1 answer
  • 7b + 3, -4b + 5, and -3b + 2<br><br> 10b + 2<br> 10<br> 0<br> b - 8
    5·1 answer
  • Write as a product: ac^2–ad+c^3–cd–bc^2+bd
    11·2 answers
  • The sum of the digits of a two-digit number is 10. When the digits are reversed, the number decreases by 36. Find the original n
    6·1 answer
  • Scientific notation The table shows the amount of money raised by each region the four regions used a total of $ (5.38×10^4) How
    12·1 answer
  • the turnout for the game is expected to reach 80,000 fans of which 57% expected to drive. An average of three fans come in each
    9·1 answer
  • PLEASE PLEASE PLEASE HELP
    9·1 answer
  • What is the equation 5x+6y=18 equal
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!