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NISA [10]
3 years ago
9

Giving 20 points help me with this ASAP please

Mathematics
1 answer:
Triss [41]3 years ago
3 0

Answer:

1. 23

2. 11

3. 11

4. 455

5. 30

6. 8

7. Invalid number

8. Invalid number

9. Invalid number

10. Invalid number

Step-by-step explanation:

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5 ( x + 7 ) +2 ( y - 1 ) when x=7 and y=2
noname [10]

Answer:

Step-by-step explanation:

5(x+7) + 2(y-1)

here x=7 and y=2

so 5(7+7)+2(2-1)= 5*14+ 2*1

70+2=72

7 0
3 years ago
Read 2 more answers
Find the length of each side of the polygon for the given perimeter
butalik [34]

Answer:

choice number 2) 10 in, 18.5 in 31.5 in

Step-by-step explanation:

we collect and evaluate the like terms.like terms means the ones that can be evaluated. like 2y and 7y are like terms. they either can be added or subtracted to get an answer . 7y-2y =5y. but you cant subtrac or add 7y  with 5 because they are not like terms.

2y +1 + 7y + 3y + 5 = 60

(2y+7y+3y)+(1+5) = 60

12y + 6 = 60

The 6 crosses the equal sign to the other side because of like terms.And becomes a minus

12y = 60 - 6

12y = 54

y = 4.5

so,

2y +1= 2 x 4.5 + 1 =10

7y = 7 x 4.5 = 31.5

3y + 5= 3 x 4.5 + 5 =18.5

Answer is 10 in, 18.5 in, 31.5 in

If you need any clarification or more explanation pls do mention at the comment section so that i can help more thx

Hope this helps and if it does pls mark as branliest answer thx

8 0
2 years ago
Find the value of y.<br><br> m ∠ 1 = 3y - 6
Ivenika [448]
m\angle1=90\\&#10;3y-6=90\\&#10;3y=96\\&#10;y=32
4 0
3 years ago
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Find the mean absolute deviation
pantera1 [17]
First find the mean (sum divided by number of values)
4+5+8+10+15=42
42/5=8.4
Then find the difference between each of the numbers and the mean.
4.4, 3.4, 0.4, 1.6, 6.6
Then find the mean of those values.
4.4+3.4+0.4+1.6+6.6=16.4
16.4/5=3.28
Final answer: 3.28
6 0
3 years ago
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Which statement is true?
Dafna1 [17]
The second one is the true statement
7 0
2 years ago
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