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
Verdich [7]
3 years ago
15

Matt is showing his work in simplifying (6.2 − 1.6) − 4.4 + 7.8. Identify any error in his work or reasoning.

Mathematics
1 answer:
shusha [124]3 years ago
6 0
Start with the parentheses first

4.6 -4.4+7.8 then calculate from left to right
= 0.2+7.8 = 8
You might be interested in
Use radical notation to rewrite each expression and simplify<br> 9 3/2
scoundrel [369]

Answer:

  9^{\frac{3}{2}}=\sqrt{9^3}=27

Step-by-step explanation:

The fractional exponent m/n is often translated to radical form as ...

  x^{\frac{m}{n}}=\sqrt[n]{x^m}

In this case, I find it easier to evaluate as ...

  x^{\frac{m}{n}}=(\sqrt[n]{x})^m=\boxed{(\sqrt{9})^3=3^3=27}

7 0
3 years ago
Weekly math homework - April 17-21
kenny6666 [7]
OK so where is the weekly math homework!?
6 0
3 years ago
Read 2 more answers
Scores on an exam follow an approximately Normal distribution with a mean of 76.4 and a standard deviation of 6.1 points. What p
klasskru [66]

Answer:

99.89% of students scored below 95 points.

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 problem, we have that:

\mu = 76.4, \sigma = 6.1

What percent of students scored below 95 points?

This is the pvalue of Z when X = 95. So

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

Z = \frac{95 - 76.4}{6.1}

Z = 3.05

Z = 3.05 has a pvalue of 0.9989.

99.89% of students scored below 95 points.

5 0
3 years ago
Please help need for tomorrow
fenix001 [56]
I hate those F***! Rip my guy
4 0
3 years ago
Read 2 more answers
Can y’all help me on question 27?!
dimulka [17.4K]

Answer: C. 78

Step-by-step explanation: Good luck! :D

There are 12 inches in a foot, there are 6 feet. 6 x 12 = 72

1/2 of a foot is 6 inches. 72 + 6 = 78!

8 0
2 years ago
Other questions:
  • Terri has a jar of orange, blue, green, and red chocolate candies. In the jar are 75 orange candies, 62 blue candies, and 52 gre
    8·1 answer
  • Help!!! Pls!!!! :) i dont know
    15·1 answer
  • Complete the square x​^2​​+2x+1
    5·1 answer
  • 2) Bobby makes model train sets. Each set requires 1,998 pieces of track. At the Hobby store, there are 37 pieces in each box. a
    13·1 answer
  • Readiness Test
    15·1 answer
  • Someone do this for me plz
    5·2 answers
  • Enter the values to complete the input/output table for the function.
    15·1 answer
  • Solve for x: 1/3 (x-22) = 4x<br>x = -2 <br>x = 34<br>x = 2 <br>x = -10 ​
    13·1 answer
  • Find the equation of the line through point (10,4) and parallel to 3x+5y=8.
    14·1 answer
  • CAN SOME ONE HELP?!!!!!!
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!