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kakasveta [241]
3 years ago
11

A positive real number is 4 more than another. When -8 times the smaller is added to

Mathematics
1 answer:
Bumek [7]3 years ago
5 0

Answer:

Step-by-step explanation:

x = y+4

x > y

x² - 8y = 61

(y+4)² - 8y = 61

y² + 8y + 16 - 8y = 61

y² + 16 = 61

y² = 45

y = √45 = 3√5

x = y+4 = 4+3√5

3√5 and 4+3√5

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3 years ago
a plant was 46 centimeters tall after a month are grown 7% taller how tall was the plant after a month
podryga [215]

Answer:

49.22 centimeters.

Step-by-step explanation:

7% of 46 is 3.22 which means you add 46 to 3.22 which gives you 49.22.

4 0
4 years ago
What is the slope of the line ?<br> A<br> B<br> C<br> D
julia-pushkina [17]

Answer:

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Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
The sales tax on a $350 computer is $ 22.75. find the sales tax rate.
likoan [24]

Set up an equation to solve for the tax rate, x:

350(x) = 22.75\\x = \frac{22.75}{350}\\x = 0.065\\x = 6.5%


We can conclude that the tax rate on the computer was 6.5 percent.

7 0
3 years ago
The amount of water flowing into a tank doubles every minute. The tank if full in an hour. When is the tank half full.
Annette [7]
Since the water in the tank is doubling each minute, that means the minute before the tank was full, it was half full.
If it fills in an hour, which is 60 minutes, than that is double what it was 1 minute ago.

The invert of doubling is halving.
The tank was half full a minute before it was full.
It was full after 60 minutes.
This means it was half full after 59 minutes.

Answer:
The tank was half full after 59 minutes.

Hope this helps!
7 0
4 years ago
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