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olga55 [171]
3 years ago
15

4

Mathematics
1 answer:
ira [324]3 years ago
7 0

Answer:

4. x = 11

5. x = -13

Step-by-step explanation:

4.   3x + 7 = 5x - 15

           -7           -7

3x = 5x - 22

-5x   -5x

-2x = -22

-2x/-2 = -22/-2

x = 11

5. 3(2x - 5) = 9x + 24

6x - 15 = 9x + 24

    +15          +15

6x = 9x + 39

-9x   -9x

-3x = 39

-3x/-3 = 39/-3

x = -13

Hope this helps, have a great day:)

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Bro pls help me I don’t understand
kirill [66]

Answer:

O= 90 because it is a right angle, 360 degrees (which is the whole circle) minus (50+90), equals 220.

6 0
3 years ago
Read 2 more answers
Paige invested 1200 at an interest rate of 5.75% compounded quarterly. Determine the value of her investments in 7 years.
iragen [17]
Use the formula A=p(1+r)^n
where 
A= value of investment
r= rate
n= time period
p= amount invested
in this question 
r= 5.75% but compounded quarterly means divide this by 4
r= 23/1600
n=7*4
n=28
p= $1200
A=1200(1+23/1600)^28

A= $1789.54

Therefore the value of her investment in 7 years is $1789.54
4 0
3 years ago
Vanessa made 60 cupcakes for the party. 5% of the cupcakes were burnt.how many cupcakes did Vanessa burn
zaharov [31]
12 because u gotta divide 60 by 5%
5 0
3 years ago
Read 2 more answers
The cost of a train ticket increases by
erastova [34]

It costs $122.4 dollars before the increase.

<h3>How to calculate percentage of a number. Use the percentage formula: P% * X = Y</h3>
  • Convert the problem to an equation using the percentage formula: P% * X = Y.
  • P is 17%, X is 7.20, so the equation is 17% * 7.20 = Y.
  • Convert 10% to a decimal by removing the percent sign and dividing by 100: 10/100 = 0.10.

Therefore, It costs $122.4 dollars before the increase.

Learn more about Finding the Percentage here:

brainly.com/question/24862040

6 0
2 years ago
2,167 divided by 6 equals
muminat
361.16 repeating I used my calculator
5 0
2 years ago
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