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raketka [301]
3 years ago
10

Please help me i really need help please

Mathematics
2 answers:
Vanyuwa [196]3 years ago
8 0

Answer:

7: 100

8: 40

9: 74

Step-by-step explanation:

Serga [27]3 years ago
6 0

Answer:

7. x= 100 8. x= 40 and 9. x= 74

Step-by-step explanation:

x + 45 +35=180(sum of angle of triangle )

or, x+ 80=180

or, x=180-80

or, x=100

same process as above for all

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Solve the system of equations given below
LuckyWell [14K]

-5(y-15=3x) = -5y+75=-15x

add 15x to both sides and subtract 75 to both sides

-5y+15x=-75

5y-2x=-3

13x=-78

divide 13 to both sides

x=-6

y-15=3(-6)

y-15=-18

add 15 to both sides

y=-3

so the answer is  (-6,-3)

I hope that this helped you sweetie :)



3 0
4 years ago
Andrew bought 7 bundles of drawing sheets that each cost the same amount of money. The tax on his purchase was $1. He spent a to
Annette [7]
Solve the equation 7x-1=15 where x is the cost of each bundle of drawing sheets. 

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6 0
3 years ago
What is 20% of 30% of 40% of $50
GarryVolchara [31]

20% of $50 = $10

30% of $50 = $15

40% of $50 = $20

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6 0
3 years ago
Ruben bought 6 new books for his collection. This increased his collection by 12%. How many books did he have before his purchas
strojnjashka [21]
He had 50 books before.
3 0
3 years ago
Use the commutative property to solve for n<br> 98,551+2,851=2,841+n<br> n=
dezoksy [38]
If the commutative property indicates that a+b=b+a with the problem being 98,551+2,841=2,841+n, its a pretty safe assumption that n would equal 98,551. a would be 98,551 as b would be 2,841.
5 0
4 years ago
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