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ruslelena [56]
2 years ago
12

PLEASE HELP WILL GIVE BRAINLIEST AND 100 POINTS IF YOU EXPLAIN

Mathematics
2 answers:
GarryVolchara [31]2 years ago
4 0

1st eq.  4x +5y = 7

2nd eq.  y = 3x+9

 replace the value of y from 2nd eq for y in 1st eq.

4x +5(3x+9) = 7

now distribute:

4x + 15x + 45 = 7

 combine like terms:

19x + 45 = 7

subtract 45 from each side:

19x = -38

divide both sides by 19

x = -38/19 = -2


now use value of x in 2nd eq to solve for y

y = 3(-2) +9 = -6 + 9 = 3

x = -2, y = 3

lesantik [10]2 years ago
3 0

2 answers will boost ur profile

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\dfrac{\$0.75}{\$0.05} = 15

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15 * 5.000 g = 75.000 g

Answer: 75.000 grams
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3 years ago
Which table represents a direct variation function?
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Direct variation is y=kx where k is a constant

the fiest way to see if it is direct or not, is if x increases, then y increases as well,
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the first one x increase and y increase
see if same constant
y=kx
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3rd is x is same but y increase so nope

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answer is last option
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3 years ago
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The value of a car decreases by 20 percent per year. Mr.Sing purchases a 22,000 automobile.What is the value of the car at the e
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HELP HELP ME PLZ !!!
nikklg [1K]

Answer:

GK=JK

Step-by-step explanation:

SSS congruency  is side-side-side congruency. We are given that GH=JH and KH=KH, which are both sides.

For SSS, we need 3 pairs of congruent sides. We already have 2 pairs.

The options are:

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the first two options, <G=<J and <H=<H are talking about congruent angles. We don't need to know about congruent angles for SSS

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Hope this helps!

3 0
2 years ago
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