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
-Dominant- [34]
2 years ago
8

Subtract: (4n + 7) - (7n - 8)

Mathematics
1 answer:
Furkat [3]2 years ago
4 0
4n+7−(7n−8)

=4n+7+−1(7n−8)

=4n+7+−1(7n)+(−1)(−8)

=4n+7+−7n+8

Combine Like Terms

=4n+7+−7n+8

=(4n+−7n)+(7+8)

=−3n+15

You might be interested in
Given the following Venn diagram, choose the correct set for M UN
Reil [10]

Answer:

  •    Third choice: {3, 4, 6, 7, 9}

Explanation:

Please, find the Venn diagram attached.

You have to find the set that represents the union of the set M and N (M ∪ N). That is a set with the elements that belong either to set M or set N.

The elements that belong to the set M are the numbers inside the circle M: 3, 4, 7 and 9.

The elements that belong to the set N are the numbers inside the circle N: 4, 6 and 7.

The complete list of the numbers in the union set is 3, 4, 6, 7, and 9, as you must not repeat the elements that belong to both sets.

So, the set that represents M ∪ N is the third option {3, 4, 6, 7, 9}.

4 0
2 years ago
.................................................................................................
Lena [83]

Answer:

m<B = 141 degrees

Step-by-step explanation:

This shape is a heptagon meaning its angles should have a sum of 900 degrees.

we are given the degrees and we need to ad them up

148+90+120+129+130+142=749

then we subtract 749 from 900 which looks like

900-749=141

from subtracting 749 from 900 we get 141 hence we get our answer that m<B = 141 degrees

5 0
2 years ago
Home Videos Inc. surveys 450 households and finds that the mean amount spent for renting or buying videos is P135 a month and th
adell [148]

SOLUTION:

Case: Hypothesis testing

Step 1: Null and Alternative hypotheses

\begin{gathered} H_0:\mu=P127.50 \\ H_1:\mu\leq P127.50 \end{gathered}

Step 2: T-test analysis

\begin{gathered} t=\frac{\hat{x}-\mu}{\frac{s}{\sqrt{n}}} \\ t=\frac{135-127.5}{\frac{75.25}{\sqrt{450}}} \\ t=2.144 \end{gathered}

Step 3: t-test with the significance level

\begin{gathered} t_{\alpha}=? \\ \alpha=0.05 \\ From\text{ }tables \\ t_{0.05}=1.654 \end{gathered}

Step 4: Comparing

t>t_{\alpha}

So tail to reject the null hypothesis. There is enough evidence at a 0.05 level of significance to claim that the mean spent is greater than P127.50.

Final answer:

Yes, there is evidence sufficient to conclude that the mean amount spent is greater than P127.50 per month at a 0.05 level of significance.

6 0
1 year ago
Last year there were k pies baked in the bake sale. This year, there were 187 pies baked. Using k, write an expression of the to
Shkiper50 [21]

Answer:

d

Step-by-step explanation:

4 0
3 years ago
How many kilometers are there in 4 miles?
raketka [301]
There are 6.4 Kilometers in 4 miles
3 0
2 years ago
Other questions:
  • Solve the following system of equations. Enter the x-coordinate of the solution. Round your answer to the nearest tenth.
    6·1 answer
  • Write 3.27 as a decimal number rounded to the nearest thousandth
    14·2 answers
  • A bakery can make 175 pastries each day. The bakery has been sold out of 3 days in a row. Determine of an estimate or exact answ
    6·2 answers
  • A function is shown in the table:
    7·2 answers
  • Find out the answer please​
    12·1 answer
  • Which ordered pairs make the equation true?
    5·1 answer
  • What is six fourths plus five tenths?
    8·1 answer
  • Please help I will mark Brainly if u give me answer quickly
    9·1 answer
  • What is 3/8 of $36.48​
    8·1 answer
  • A trash can is shaped like a cylinder. The radius of the trash can is 12 inches, and the height of the container is 31.5 inches.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!