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gregori [183]
4 years ago
10

Solve for x 15x + 6 = 10x + 21

Mathematics
2 answers:
tensa zangetsu [6.8K]4 years ago
7 0
15x+6=10x+21   When finding x you must get x alone on one side. Start by
-10x      -10x   subtracting the equal number of the smallest x in the
5x+6=21  equation. Remember what you do to one side you must do to the 
-6        -6 other side as well because both sides are equivalent to one 
5x=15      another. Giving you no x value on one side. Then continue 
/5     /5     getting x alone. Because it says +6 you must subtract six on 
x=3        both sides. Which makes the 6 now equivalent to 0 so it is no longer apart of the equation. Then you must divide the value beside x by itself to make the x value equal 0. Never forget to do it to the other side as well. This gives you x=3. 
I hope this helped you out. 
I love doing these types of problems. :)
tigry1 [53]4 years ago
3 0
15x+6=10x+21
5x+6=21
5x=15
x=3
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Each question is worth 10 pts, I will do brainliest for the person who does both and follow pls help.
In-s [12.5K]

Answer:

1. 6

2.

pennies = 9

nickels = 5

quaters = 5

dimes = 10

Step-by-step explanation:

1.

18/3 = 6

as we know that there are 18 scoops, and 3 per icecream, we can divide the two to get the number of ice creams

2.

5n

#n = #q; #q = 2#d, this is a simple ratio, you just plug in the variables to get

5n = 5q = 10d = 15 coins

24 - 15 = 9 pennies

pennies = 9

nickels = 5

quaters = 5

dimes = 10

8 0
3 years ago
Please answer!(20pts) Each month your parents deposit $75 into your college fund. The account pays an annual rate of 3.5% compou
balandron [24]
I’m not quite sure but i need to help someone
8 0
3 years ago
The bearing from the Pine Knob fire tower to the Colt Station fire tower is N 65° E, and the two towers are 31 kilometers apart.
suter [353]

The distance are

a. 42.42

b. 15. 52

<h3>How to solve for the distance</h3>

80 = 65 + <ABC

<ABC = 80 - 65

= 15

Through the use of sine rule we would have

By using sine rule,

Sine 15/a = sine 135/b =

sin 30/30.

Next we have to solve b by cross multiplying

b = (30× sin135) / sin 30

= 21.21/0.5

b = 42.42 km

Also, the value of a will be:

= (42.42 × sin 15) / sin 135

= 10.98/0.7071

= 15.52

Read more on bearing here:

brainly.com/question/15221233

#SPJ1

3 0
2 years ago
The Watson family and the Thompson family each used their sprinklers last summer. The Watson family's sprinkler was used for hou
o-na [289]

This question s incomplete, the complete question is;

The Watson family and the Thompson family each used their sprinklers last summer. The Watson family's sprinkler was used for 15 hours. The Thompson family's sprinkler was used for 30 hours.

There was a combined total output of 1050 of water. What was the water output rate for each sprinkler if the sum of the two rates was 55L per hour  

Answer:

The Watson family sprinkler is 40 L/hr while Thompson family sprinkler is 15 L/hr

Step-by-step explanation:

Given the data in the question;

let water p rate for Watson family and the Thompson family sprinklers be represented by x and y respectively

so

x + y = 55  ----------------equ1

x = 55 - y ------------------qu2

also

15x + 30y = 1050

x + 2y = 70 --------------equ3

input equ2 into equ3

(55 - y) + 2y = 70

- y + 2y = 70 - 55

y = 15

input value of y into equ1

x + 15 = 55

x = 55 - 15

x = 40

Therefore, The Watson family sprinkler is 40 L/hr while Thompson family sprinkler is 15 L/hr

8 0
3 years ago
Last month, a manufacturing company shipped 452 boxes of ball bearings.Each box contains 48 balls bearings. How many ball bearin
Arturiano [62]

Answer: the company shipped 21,696 ball bearings.

Step-by-step explanation:

Each box contains 48 balls bearings  and the company shipped 452 boxes, so it is a simple multiplication 452 times 48 = 21,696

6 0
3 years ago
Read 2 more answers
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