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abruzzese [7]
3 years ago
7

+3c - 7d - 2c + 5d - c + 8d +4c - 6d ______

Mathematics
1 answer:
ollegr [7]3 years ago
3 0
*Hint: You must combine like terms and solve.

3c - 7d - 2c + 5d - c + 8d + 4c - 6d
7c - 3c + 13d - 13d
4c
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Help I’ll give you 30 points
Gnesinka [82]

Answer:

a) 16.25 centimeters

b) 6.8 centimeters

Step-by-step explanation:

We can set up a proportion for both of these problems.

a) Look at the longest side of each triangle. We can set up a fraction: 7.2/18. We can also set up a fraction for XZ and PR:

6.5/x

x represents the length you're trying to find.

Since the triangles are similar, we have an equation:

7.2/18=6.5/x

Cross multiply

16.25

XZ is 16.25 centimeters long.

b)

We can do same thing:

7.2/18=x/17

Cross multiply

6.8

QR is 6.8 centimeters long.

Hope this helps!

6 0
3 years ago
Read 2 more answers
PLEASE HELP (20 POINTS)
Paul [167]

Answer:

option b

Step-by-step explanation:

you can't take out anything, not an x or a 2

6 0
3 years ago
Carrie gave her hairstylist a $4.20 tip. The tip was 15% of the cost of the haircut. Write an equation to find h, the cost of th
Alona [7]

Answer:

28

Step-by-step explanation:

you could wright the equation like 15/100=4.20/x

All I did is 100 divided by 15, which is 6.6666667, and then multiply that number by 4.20.

I hope this helped you!

4 0
3 years ago
What is the answer to this too?
suter [353]

Answer:

C.36,565 I hope this helps

4 0
3 years ago
Read 2 more answers
What is the sum? 3/x+4/(x)2
gavmur [86]
(3/x)+(4/(x^2))

give common denominator:
(3x/(x^2))+(4/(x^2)) = (3x+4)/(x^2)
6 0
4 years ago
Read 2 more answers
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