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ANEK [815]
3 years ago
7

yesterday, there was 80 problems assigned for math homework. harry did 20% of them correctly. how ,many problems did harry get r

ight?
Mathematics
2 answers:
larisa [96]3 years ago
6 0
80÷100 x 2 ÷10 = 400 ÷ 20 = 15

Igoryamba3 years ago
3 0
400 i think i am pretty sure but if it's wronge i apolize 


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1. Solve 4x + 5 > 5x – 2 for x.
Zigmanuir [339]
The answer should be X < 3 !

Explanation:

You first minus 5 to the other side which gave you -3 . Then you minus the 5x to the other side which gave you -1. After than just need to divide -1 to both side, switch the > and you’ll get the answer! Hope the explanation makes sense.
7 0
3 years ago
Read 2 more answers
How do you answer this and please show work if you solve?
nikklg [1K]
To solve this, simply switch the X and y variables within one equation, and upon doing so, see and check if it equals to the other equation.

f(X) = -X + 4/5
Y = -X + 4/5
X = (-Y+4)/5
5X = -Y + 4
-Y = 5X - 4
Y = -5x + 4

Yes, by looking at the second equation it is an inverse of the first one.
7 0
3 years ago
Number 8 and 9 pls, if u answer u get brainlist rank!
mylen [45]

Answer:

8.

Denote the equation : y = ax + b

Use the first 2 values of x and y in table:

3a + b = 21

5a + b = 35

Subtract the 2 equations:

=> 2a = 14 => a = 7 => b = 21 - 3 x 7 = 0

=> The solution is  y = 7x

9.

Denote the equation : y = ax + b

Use the first 2 values of x and y in table:

5a + b = 17

10a + b = 22

Subtract the 2 equations:

=> 5a = 5 => a = 1 => b = 17 - 5 x 1 = 17 - 5 = 12

=> The solution is  y = x + 12

Hope this helps!

:)

8 0
3 years ago
2<br> 3250 m + 1,662 km =
uranmaximum [27]

Answer:

1,665.25 km

Step-by-step explanation:

8 0
3 years ago
I need a answer A.S.A.P PLEASE WILL GIVE 19 POINTS
Ipatiy [6.2K]

Answer:

Okie when you do these you got to give all information

Step-by-step explanation: because people can help you instead of looking at a picture wonderin what they are they are supposed to do

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3 years ago
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