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zloy xaker [14]
2 years ago
12

30 points! PLS HELP IF U SMART

Mathematics
2 answers:
ANTONII [103]2 years ago
8 0

Answer:

y = 40             x = 80

Step-by-step explanation:

520 = 3.25x + 6.5y     and   x+y=120

x+y=120

x = 120-y

520 = 3.25(120-y)+6.5y

520 = 390-3.25y+6.5y

520 = 390+3.25y

130=3.25y

40 = y

x = 120-y

x = 120-(40)

x = 80

here's a graph

Sergeeva-Olga [200]2 years ago
4 0
Y=40 x=80 ty for your time
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When a certain tree was first planted, it was 4 feet tall, and the height of the tree increased by a constant amount each year f
MA_775_DIABLO [31]

Answer:

Option D is the correct answer.

Step-by-step explanation:

Initial height = 4 feet

Given that the height of the tree increased by a constant amount each year for the next 6 years. At the end of the 6th year, the tree was 1/5th taller than it was at the end of the 4th year.

Let the rate of growing each year be g.

After 6 years height of tree = 4 + 6g

After 4 years height of tree = 4 + 4g

At the end of the 6th year, the tree was 1/5th taller than it was at the end of the 4th year.

That is

                4+6g=4+4g+\frac{4+4g}{5}\\\\4+6g=\frac{20+20g+4+4g}{5}\\\\20+30g=24+24g\\\\6g=4\\\\g=\frac{2}{3}ft/year

Option D is the correct answer.    

8 0
3 years ago
3. The longer diagonal is 4 more than shorter diagonal of a kite. The areas times the shorter diagonal. If the shan side is 6 m
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4 0
3 years ago
Did I do it rightly?
Andreas93 [3]
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3 years ago
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Answer:

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Step-by-step explanation:

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8 0
3 years ago
THIS IS CHALLENGING. THIS WILL DEFINITELY PROVE THAT YOU ARE SMART!!
Greeley [361]

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Positive value:

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Negative value

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5 0
3 years ago
Read 2 more answers
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