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k0ka [10]
3 years ago
14

3x - 4y = 18x + 3y = -7​

Mathematics
1 answer:
Mnenie [13.5K]3 years ago
4 0

Answer:

x=2, y=-3

Step-by-step explanation:

x+3y+-7

move variable to the right and -3y from each side

x+3y-3y=-7-3y

x= -7-3y

3x -4y=18

3(-7-3y)-4y=18

solve for y, distribute

-21-9y-4y=18

collect like terms

-21-13y=18

move constant and change sign

-13y=18+21

add

-13y=39

divide by -13

y= -3

substitute

x=-7-3(-3)

solve

x=2

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Please please help me in these questions ​
boyakko [2]

a. a=40° (alternate interior angles)

b+40°=180°( supplementary angles)

b=140°

c= d= 140°( vertically opposite angles)

d=b=140°( corresponding angles)

b. 2a+120°=180° (supplementary angles)

2a=60°

a=30°

c. a+110°=180°( supplementary angles)

a=70°

b+70°=180°( supplementary angles)

b=110°

c+110°=180°( supplementary angles)

c=70°

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3 0
2 years ago
Find the limit (Picture Provided)
aev [14]

As long as g(x) (or whichever function appears in the denominator) does not approach 0 as x\to c,

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In this case,

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8 0
2 years ago
Read 2 more answers
Sue buys 5 pieces of fabric.Each piece is 1 7/10 yards long.What is the total length of the fabric she buys?One yard of the fabr
irina [24]

Answer:

The total length of fabric sue buys is 8.5 yards and total cost of the fabric is $42.5 .

Step-by-step explanation:

As given

Sue buys 5 pieces of fabric.

Each\ piece\ is\ 1 \frac{7}{10}\ yards\ long.

i.e

Each\ piece\ is\ \frac{17}{10}\ yards\ long.

Total\ length\ of\ fabric\ sue\ buys = \frac{5\times 17}{10}\ yards

Total\ length\ of\ fabric\ sue\ buys = \frac{85}{10}\ yards

In the decimal form

Total length of fabric sue buys = 8.5 yards

As given

One yard of the fabric costs $5

Total\ cost\ of\ fabric\ sue\ buys = 8.5\times 5

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Therefore the total length of fabric sue buys is 8.5 yards and total cost of the fabric is $42.5 .


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3 years ago
Marianne owes $56 for tickets to the school play. If each ticket cost $4, how many tickets did she buy?
Aleks04 [339]
The answer is 14. 54/4=14
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2 years ago
Ambrose and Kaitlin are taking a pottery class. Kaitlin makes a bowl every 13 minutes. Ambrose makes a bowl every 7 minutes. If
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Step-by-step explanation:

91minutes

13 x = 91 minutes

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