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pishuonlain [190]
3 years ago
5

What is the value of n when 7n-13=5n+7

Mathematics
2 answers:
anyanavicka [17]3 years ago
7 0
7n-13=5n+7
7n-5n=7+13
2n=20
n=20/2
n=10
user100 [1]3 years ago
4 0
You have to simplify both sides of the equation and your answer is N=10
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(9, 8) is the midpoint of mc136-1.jpg. The coordinates of S are (10, 10). What are the coordinates of R?
kolbaska11 [484]
I cant see the image...but I take it that the midpoint is (9,8) and the endpoint S is (10,10) and ur looking for the other endpoint R.

midpoint formula : (x1 + x2) / 2, (y1 + y2) / 2
(10,10)....x1 = 10 and y1 = 10
(x,y)....x2 = x and y2 = y
so we sub
(10 + x) / 2, (10 + y) / 2 = 9/8

(10 + x) / 2 = 9
10 + x = 9 * 2
10 + x = 18
x = 18 - 10
x = 8

(10 + y) / 2 = 8
10 + y = 8 * 2
10 + y = 16
y = 16 - 10
y = 6

so endpoint R has coordinates of (8,6) <===
7 0
3 years ago
If a parking lot holds 1,600 cars and fills 3/4 of its spaces, how many spaces are filled?
AnnyKZ [126]

The total space in the parking lot is 1600 cars

It is mentioned that \frac{3}{4} parts of this parking is filled

Now we are required to find what is the three-fourths part of 1600

To find it we multiply \frac{3}{4} times 1600

\frac{3}{4}  X 1600

= \frac{3X1600}{4}

=\frac{4800}{4}

= 1200 cars

Hence 1200 cars fills the three-fourths of the car parking lot that has a capacity of 1600 cars

8 0
3 years ago
Read 2 more answers
Find the perimeter of a square that is 3inches on a side. 7 inches 15 inches 12 inches 30 inches
In-s [12.5K]

Answer:

12 inches

Step-by-step explanation:

A square has 4 sides with the same length.

The perimeter of a square is the 4 times the length of one side.

perimeter = 4s

perimeter = 4 * 3 inches

perimeter = 12 inches

4 0
3 years ago
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2. Find the center and radius of the circle with equation (x-6)2+ (y + 5)2 = 9.
Romashka-Z-Leto [24]

Answer:

Center (6 , -5)   and radius = 3

Step-by-step explanation:

The Standard equation of circle can  be written as

(x - a)² + (y - b)² = r²

with center (a , b)   and radius  = r

Now from given circle equation

(x - 6)² + (y +5)² = 9

so, from here center of circle (6 , -5) and radius = 3

4 0
3 years ago
Ana took out a $600 loan from the bank. At the end of 5 years, she pays back $60 in interest. What was the interest rate?
Usimov [2.4K]

Answer:

Ana payed a 10% interest rate.

7 0
3 years ago
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