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
Murrr4er [49]
3 years ago
14

3.5(10n + 2n - 9) = 178.5

Mathematics
1 answer:
Elena-2011 [213]3 years ago
8 0

Answer:

n= 5

Step-by-step explanation:

3.5 (10n + 2n-9) = 178.5

Divide 3.5 on both sides

10n + 2n -9 +51

Add like terms to get 12n

12n - 9 = 51

12n = 51 + 9

Add 51 and 9 to get 60

12n + 60

Divide 60 by 12 to get 5

n=5

You might be interested in
West Virginia math glencone course 2 volume 1 page 191
Step2247 [10]

Answer:

Im not sure but I think its -5

7 0
3 years ago
Find angle abc (2x+14) (x+7)
melisa1 [442]
It's a complementary angle, so just solve for x and subtract the CBD from 90, 
First, we have to solve for x.
2x + 14 + x + 7 = 90
Combine like terms
3x + 21 = 90
Balance, subtract 21 from each side.
3x = 69
Divide 3 from each side
x = 23.
So know that we know x is 23, we can go about it 2 ways, subtracting the other angle with 90 or just substituting the variable, I'd just substitute the variable for it so just do 23 + 7. That equals 30, angle ABC = 30.


7 0
3 years ago
Read 2 more answers
Coach Thomas brings his baseball team to get ice cream after each Friday night game. Last week, he purchased 9 cones and 8 cups
Ierofanga [76]

Answer:

(3.5, 2.75)

source: trust me bro

4 0
3 years ago
HELP ITS MY LAST QUESTION WITH STEP BY STEP
maks197457 [2]

Answer:

71

Step-by-step explanation:

This is the answer because:

1) First, add Andy's score and Janet's score in order to know how much they got in total:

  • Janet's score: 119 + 96 + 145 = 360
  • Andy's score: 127 + 74 + 88 = 289

2) In order to find how much more Janet scored, jus subtract Andy's score from Janet's score:

  • 360 - 289 = 71

Therefore, the answer is 71.

Hope this helps! :)

8 0
3 years ago
· y = 3x - 7<br> Find the slope
coldgirl [10]

Answer:

3

Step-by-step explanation:

the slope of an equation (y=mx+b) is always "m", or the coefficient right infront of x. in this case, y=3x-7, 3=m, -7=b. m is the slope, so the slope is 3.

3 0
3 years ago
Read 2 more answers
Other questions:
  • What is the radius of the circle given by the equation below? x2 - 2x + y2 - 2y - 98 = 0?
    15·1 answer
  • What is 22+54x=-20+60x
    7·1 answer
  • Solve this system of linear equations. Separate
    11·1 answer
  • PLEASE HELP I’LL GIVE BRAINLIEST!
    12·1 answer
  • ABCD is a rectangle. Find the length of each diagonal.<br><br> AC = 2(x-3)<br> BD = x+5
    7·2 answers
  • Glenn swam 2 laps every morning for 7 day. in addition to the laps he swam each morning, he swam 3 laps with his friends on Tues
    5·2 answers
  • Solve the question below using two different methods.
    13·1 answer
  • If x = 3 cm and z = 5 cm, what is the length of y?
    5·1 answer
  • What is the median of 5, 9, 6, 6, 7, 5, 8, 7, 6
    11·2 answers
  • Use the zeros and the labeled point to write the quadratic function
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!