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Maurinko [17]
3 years ago
5

Set background

Mathematics
1 answer:
saw5 [17]3 years ago
8 0

Answer:

45/5 = 9

Step-by-step explanation:

use PEMDAS

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3x+10y=13<br> 4(-2y+x)-9x=13
mart [117]

Answer:

x=-9

y=4

Step-by-step explanation:

3x+10y=13 ← Equation 1

4(-2y+x)-9x=13\\

By simplifying the above equation we get,

-8y+=4x-9x=13 (Simplifying the brackets)

-8y-5x=13 (By subtracting -9x from +4x) ← Equation 2

Multiply Equation 1 by 5 and Equation 2 by 3 and add them together.

Equation 1 multiplied by 5 will give,

15x+50y=65

Equation 2 multiplied by 3 will give,

-24y-15x=39

Add those together,

15x+50y-24y-15x=65+39

26y=104 (After simplifying x values)

Therefor y=4

By substituting y=4 to Equation 1 we get,

3x+10*4=133x+40=13\\3x=-27\\x=-9

Therefor we can say,

x=-9

y=4

8 0
4 years ago
Which is the better deal?
LekaFEV [45]
B

It is B because When you do 1.44/12 you get 0.12 so, 12 ounce jar of sauce for $1.44 is the best deal.
5 0
2 years ago
Devon uses 64 inches of ribbon to make 1 bow.How many yards of ribbon does Devon need to make 9 bows?
Juliette [100K]

Answer:

16

Step-by-step explanation: 64 times 9 is 576 and 576 inches equals 16 yds

5 0
3 years ago
Please explain I just started learning this
Digiron [165]

Answer:

x=5

y=7

Step-by-step explanation:

y = x+2 so plug that in the next equation as y

so it be --> 5x+(-4)(x+2)= -3 now use distributive property

(-4 times x)+(-4 times 2)= -4x+-8 replug that back in

5x-4x+-8 = -3 subtract your x

1x = x so ---> x+-8 = -3 now to get rid of -8 we have to add 8 to it

x= -3 but whatever you do to one side u do to the other so u have to add 8 to -3---> so it be x=5

now take that x=5 and plug it in to your first eqaiuton to get y

y=5+2 ---> y =7

6 0
3 years ago
A 31-foot board is cut into two pieces so that three times the length of the longer piece is 4 times the length of the shorter p
Sonja [21]

Answer:

675

Step-by-step explanation:

Hope this answer helps you :)

Have a great day

Mark brainliest

6 0
3 years ago
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