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mafiozo [28]
3 years ago
7

The system of equations has no solution: y=2/3x-5 4x - 6y = 30 true or false?

Mathematics
1 answer:
Serjik [45]3 years ago
3 0

1. y = 2/3x - 5

2. 4x - 6y = 30

Divide 2. by 2

3. 2x - 3y = 15

Substitute 1. into 3.

4. 2x - 3(2/3x - 5) = 15

5. 2x - 2x + 15 = 15

6. 15 = 15

False. There are an infinite number of solutions.

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mixas84 [53]
Hi friend,
Capital City's population would be B) 2240
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3 years ago
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For the proportional relationship y = -5x, what is the ratio of vertical change to horizontal change? Will the graph of the line
NeTakaya
The given proportional relationship is y = -5x.
Therefore the ratio
y/x = -5 = -5/1

If x changes by 1, then y/x = y/1 = -5.
This means that y changes by -5 when x changes by 1.
The ratio of vertical change is -5:1

The standard equation for a straight line is
y = m*x + c
where
m = the slope,
c = the y-intercept.

Therefore the given relationship is a straight line with a negative slope of -5. This means that y decreases as x increases.

Answer: C
-5:1
The graph decreases from left to right.
6 0
3 years ago
Multiply. Express your answer in standard form. (x^2-4x+3)(-3x^2+7x-1)
miss Akunina [59]

Answer: See picture.

Step-by-step explanation:

For this king of method, I personally like using the Box Method. See Picture:

5 0
3 years ago
pls help me with this question..... if right I will follow u.... and give u brainliest ......pls it's urgent......​
Mrac [35]

Answer:

Step-by-step explanation:

3). Naomi walked 4560 m to the nearest 10 m. Peta walked 4600 m to the nearest 100 m.

a). 4555 m ≤ n ≤ 4564 m

    4550 m ≤ p ≤ 4649 m

b). If n = 4555 m and p = 4550 m

   Then Naomi walked more than Peta

   If n = 4555 m and p = 4555 m

   Then Both Naomi and Peta walked exactly the same.

   If n = 4555 m and p = 4649 m

   Then Peta walked further than Naomi.

  Therefore, all three statements could be true.

4). (a). x = 120 to nearest 10 → 115 ≤ x ≤ 124

(b). y = 1.24 to 2 decimal places → 1.24

    (Already given in 2 decimal places)

(c). z = 0.0124 to 3 significant numbers → 0.0124

6 0
3 years ago
11. At Home Depot, a light fixture is sold at a price of $280.20, including a markup of 40% of cost.
Temka [501]

Answer:

a: $392.28

b: $112.08

Step-by-step explanation:

The decimal form of 40% is 0.4. Multiply 0.4 by 280.20, and you get 112.08

Because it is a markup, you add this 112.08 to your original price, 280.20

280.20+112.08=392.28

Your answer to letter a is $392.28

The rate of the markup is how much was added, so 112.08

5 0
3 years ago
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