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sladkih [1.3K]
3 years ago
11

Solve the system of linear equations by elimination. 4x+3y=−5 −x+3y=−10

Mathematics
1 answer:
Mrrafil [7]3 years ago
5 0
Point form: (1,-3)
Equation form: x=1, y=-3
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Marco's Drama class is performing a play. He wants to buy as many tickets as he can afford. If tickets,cost $3.50 each and he ha
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Answer:

4

Step-by-step explanation:

You just have to divide the money he has by the ticket price.

The answer to that division is 4.5, but he can't buy half ticket, so the answer is 4

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Which number should each side of the equation 4/5x=8 be multiplied by to produce the equivalent equation of x=10?
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D

Step-by-step explanation:

(4/5)x*5=8*5

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2 years ago
What is the value of x in 2(5^x) = 14?
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3 years ago
The value of gold in the year 2010 was approximately $1,800. The value of gold increases by approximately 9.5% a year.
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8 0
2 years ago
Which equation has a constant of proportionality equal to 9 y=81/3x y=9x y=3x y==1/9x
aev [14]

Answer:

B)  y = 9 x has Proportionality Constant = 9

Step-by-step explanation:

Two quantities P and Q are said to be PROPORTIONAL if and only if:

P ∝ Q ⇔  P  = k Q    ⇔ k = \frac{P}{Q}

Here, k = PROPORTIONALITY CONSTANT

Given : k = 9

Now, let us consider the given expressions in which  x ∝y

y  = 81/3 x

Here, \frac{y}{x} = \frac{81}{3}  = 27 \ne 9

So, here Proportionality Constant ≠ 9

y = 9 x

Here, \frac{y}{x} =  9

So, here Proportionality Constant = 9

y = 3 x

Here, \frac{y}{x} =  3 \ne 9

So, here Proportionality Constant ≠ 9

y  = 1/9 x

Here, \frac{y}{x} =  \frac{1}{9}  \ne 9

So, here Proportionality Constant ≠ 9

Hence, only y = 9 x has Proportionality Constant = 9

8 0
3 years ago
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