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
Lemur [1.5K]
3 years ago
6

2. Simplify each expression.

Mathematics
1 answer:
deff fn [24]3 years ago
8 0

Answer:

6n + 3 + 2n = 8n + 3

99-9-9 = 81

2p + 3p+ 6-p-3 = 4p + 3

2.25(14.3m + 6 + 2.7m) = 38.25m + 15.5

You might be interested in
Miguel is making trail mix. He uses 5 1/3 ounces of nuts and 2 3/4 ounces of raisins. Which
Lady_Fox [76]
It doesn’t show which options?
But the difference would be 2 7/12 or 2.58
4 0
2 years ago
How does the speed of a runner vary over the course of a marathon (a distance of 42.195 km)? Consider determining both the time
Tom [10]

Answer:

The observed typical difference value of mode is 100 seconds approximately.

The proportion of runners ran the late distance more quickly than the early distance is approximately 1%

Step-by-step explanation:

Fundamentals

Consider that there are x favorable cases to an event E, out of a total of n cases. Then, the probability of that event is written as:

P(E)=  

Total number of cases /Number of favorable cases =  x/n

A histogram is constructed for continuous data, which is divided into classes called bins. The shape of the distribution can be determined from the histogram.

step 1

The provided histogram indicates time difference on xx -axis and frequency of runners on yy -axis. To determine the typical difference value, identify the peaks of the graph.

The histogram is skewed towards right side. The graph indicates that there are few outliers around 700 seconds. For a typical difference value, the value of mode is considered.

The graph indicates that the value of mode is 100 seconds approximately.

The observed typical difference value of mode is 100 seconds approximately.

Explanation

From the histogram, the typical difference value is obtained on the basis of guessing the value of mode which has been approximated to be around 100 seconds.

Step 2

From the histogram, it can be estimated that there are around 10 runners which has negative difference which means approxi8matley 10 runners ran the late distance more quickly than the early distance,

The approximate sample size can be calculated as:

Sample size=90+190+180+160+120+80+60+40+30+20

Thus, the proportion of runners is obtained as:

\begin{array}{c}\\p = \frac{{\left( \begin{array}{l}\\{\rm{Number of runners who has }}\\\\{\rm{negative time difference}}\\\end{array} \right)}}{{{\rm{Total sample size}}}}\\\\ = \frac{{10}}{{970}}\\\\ = 0.01\\\end{array}  

p=  <u> </u>Number of runners who has

<u>     negative time difference   </u>

      Total sample size

​  

=10/970

=0.001

The proportion of runners ran the late distance more quickly than the early distance is approximately 1%

EXPLANATION

The obtained proportion is 0.01. It indicates that there are approximately 1% of the runners who ran late distance more quickly than the early distance is very few.

​  

​  

3 0
3 years ago
What is Four more than twice a number is -10?
Katena32 [7]
4+2x=10
2x=10-4
2x=6
X=6/2
X=3
6 0
3 years ago
At the sewing store, Whitney bought a bag of mixed buttons. She got 90 buttons in all. 27 of the buttons were large. What percen
ANEK [815]
If I'm correct the answer is 30%. I think it is 30% because if you divide 27 by 90 it equals 0.3 which is 30%
3 0
3 years ago
Please answer this question! 30 points and brainliest!
sasho [114]

Answer:

it should be 14 over 5

Step-by-step explanation:


4 0
3 years ago
Other questions:
  • The age of a father is 2 less than 7 times the age of his son. In 3 years, the sum of their ages will be 52. If the son’s presen
    12·2 answers
  • Judy is pulling on a trunk with a 12-N force. Ike pulls at right angles to Judy. With how much force must Ike pull to make the r
    9·1 answer
  • I don't understand what the "!"s mean. Help please
    15·2 answers
  • Suppose that F(x) = x2 and G(x) = -1/3(x+4)2. Which statement best compares the graph of G(x) with the graph of F(x)
    10·1 answer
  • Solve 7x – 5x – 3 = x 4.
    10·1 answer
  • How many ways can you get to the end, only being able to go down or left, and having to avoid the green thing?
    7·1 answer
  • On a number line, 0.2 would be locate. Choose all answers that make a true statement.
    13·1 answer
  • Which if the following expressions is equal to 9/4?
    14·2 answers
  • 5,3,1,-1, common difference or common ratio
    13·1 answer
  • FREE BRAINLIST 2
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!