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
soldi70 [24.7K]
2 years ago
6

-7 (1 + 3x) please help asap

Mathematics
2 answers:
scZoUnD [109]2 years ago
5 0

\huge\boxed{Hello!} I can help you with joy! :)

We are asked to multiply -7 by (1+3x)

All we have to do is multiply -7 by 1 and 3x:

-7-21x

I have used the Distributive Property to solve this problem.

\huge\bold{Hope\;it\;helps!\;Please\;mark\;Brainliest!}

\huge\rm{StillEnjoyingLife :)

\rm{SomeoneJoyful\;here\;to\;help

grigory [225]2 years ago
4 0

Answer:

= −21x−7

Step-by-step explanation:

−7(1+3x)

=(−7)(1+3x)

=(−7)(1)+(−7)(3x)

=−7−21x

= −21x−7

You might be interested in
ou are interested in estimating the the mean age of the citizens living in your community. In order to do this, you plan on cons
PolarNik [594]

Answer:

(\frac{4\sigma}{2.056})^2, rounded up, if needed, citizens should be included in the sample, in which \sigma is the standard deviation of the population.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.96}{2} = 0.02

Now, we have to find z in the Ztable as such z has a pvalue of 1 - \alpha.

That is z with a pvalue of 1 - 0.02 = 0.98, so Z = 2.056.

Now, find the margin of error M as such

M = z\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

Within 4 years of the actual mean

We have to find n for which M = 4. So

M = z\frac{\sigma}{\sqrt{n}}

4 = 2.056\frac{\sigma}{\sqrt{n}}

2.056\sqrt{n} = 4\sigma

\sqrt{n} = \frac{4\sigma}{2.056}

(\sqrt{n})^2 = (\frac{4\sigma}{2.056})^2

n = (\frac{4\sigma}{2.056})^2

(\frac{4\sigma}{2.056})^2, rounded up, if needed, citizens should be included in the sample, in which \sigma is the standard deviation of the population.

8 0
3 years ago
~ ! ANGLE MEASURE ! ~
Troyanec [42]

Answer:

1 and5

Step-by-step explanation:

.......?...........

6 0
3 years ago
The environmental club has 8 sixth-graders, 11 seventh-graders, and 15 eighth
Tresset [83]

Answer:

1320

Step-by-step explanation:

8 x 11 x 15 = 1320

Hope this helped :)

8 0
3 years ago
Read 2 more answers
The full answer I don't understand
Slav-nsk [51]
DOB
that is from 55 to 145

acute means angle is less than 90 degrees
right means equal to 90
obtuse means greater than 90

so

55 to 145
145-55=90
it is right angle
4 0
4 years ago
This graph shows a proportional relationship. What is the constant of proportionality? Enter your answer as a ratio in simplifie
kramer
This graph shows a proportional relationship. What is the constant of proportionality? Enter your answer as a ratio in simplified form in the box.

4 0
3 years ago
Read 2 more answers
Other questions:
  • Solve the equation 3/4x-5=x
    6·1 answer
  • How would you factor 4x^2 + 9?
    13·1 answer
  • Helppppp meeeeee question 2 pleaseeee !!
    6·1 answer
  • Help answer this question
    8·1 answer
  • Find the sum.
    9·2 answers
  • Use the grouping method to factor the polynomial below.<br><br> x^3+4x^2-3x-12
    5·2 answers
  • Value of x? with work
    13·1 answer
  • Answer the question please which of the following shows numbers in order from least to greatest
    10·1 answer
  • The ratio of the perimeter of two similar polygons is 5:7. The area of the smaller polygon is 30 sq. cm. Find the area of the la
    14·1 answer
  • Find the solution to the system of equations.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!