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Murrr4er [49]
2 years ago
15

If 1 is added to eight times a​ number, the result is equal to 4 more than seven times the number. Find the number.

Mathematics
2 answers:
Inessa [10]2 years ago
8 0

Answer:

x=3

Step-by-step explanation:

apparently, brainly detection deleted my answer/explanation???

it wont let me show the steps, sorry

Inessa [10]2 years ago
4 0
The answer to this question is c
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Find g(x), where g(x) is the reflection across the y-axis of f(x)=x.
3241004551 [841]
X➝-x by reflection, so g(x)=-x
7 0
2 years ago
The student-to-faculty ratio at a small collage is 17:3. The total number of students and faculty is 740. How many faculty membe
kozerog [31]

There are 111 faculty members at the college and 629 students at the college.

Step-by-step explanation:

Given,

The student to faculty ratio = 17:3

Total number of 740.

Let,

x be the original number.

Number of students = 17x

Number of faculty = 3x

Number of students + Number of faculty = 740

17x+3x=740\\20x=740

Dividing both sides by 20

\frac{20x}{20}=\frac{740}{20}\\x=37

Number of students = 17x = 17*37 = 629

Number of faculty = 3x = 3*37 = 111

There are 111 faculty members at the college and 629 students at the college.

Keywords: ratio, multiplication

Learn more about multiplications at:

  • brainly.com/question/663692
  • brainly.com/question/6569012

#LearnwithBrainly

6 0
3 years ago
HELP ME PLEASEE
Nina [5.8K]

Answers:

x = -8/5 or x = 8/5

Sum of the first ten terms where all terms are positive = 4092

========================================================

Explanation:

r = common ratio

  • first term = 4
  • second term = (first term)*(common ratio) = 4r
  • third term = (second term)*(common ratio) = (4r)*r = 4r^2

The first three terms are: 4, 4r, 4r^2

We're given that the sequence is: 4, 5x, 16

Therefore, we have these two equations

  • 5x = 4r
  • 4r^2 = 16

Solve the second equation for r and you should find that r = -2 or r = 2 are the only possible solutions. If r = -2, then 5x = 4r solves to x = -8/5. If r = 2, then 5x = 4r solves to x = 8/5.

-----------------

To find the sum of the first n terms, we use this geometric series formula

Sn = a*(1 - r^n)/(1 - r)

We have

  • a = 4 = first term
  • r = 2, since we want all the terms to be positive
  • n = 10 = number of terms to sum up

So,

Sn = a*(1 - r^n)/(1 - r)

S10 = 4*(1 - 2^10)/(1 - 2)

S10 = 4*(1 - 1024)/(-1)

S10 = 4*(-1023)/(-1)

S10 = 4092

8 0
2 years ago
Joel has $40 saved in his bank account. He plans to add $8.00 per week when he starts his lawn mowing business.
JulsSmile [24]

Answer:

The answer is Joel has to work for 10 weeks

Step-by-step explanation:

Trust me its correct

pls mark me as brainliest

4 0
2 years ago
Read 2 more answers
If Angela has $500 to invest at 2.5% per annum compounded quarterly, how long will it be
11Alexandr11 [23.1K]
N = number of compounding periods
Years = log (total / principal) / n * log (1 + rate / n)
Years = log (750 / 500) / 4 * log (1 + .025/n)
Years = log (1.5) / 4 * log (1<span><span>.00625) </span>
</span> <span>Years = 0.17609125906 / 4 * 0.0027058933759
</span><span>Years = 0.17609125906 </span> / <span> <span> <span> 0.0108235735 </span> </span> </span>
Years = <span> <span> <span> 16.2692348382 </span> </span> </span>

Source Calculator
http://www.1728.org/compint.htm


5 0
2 years ago
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