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Musya8 [376]
3 years ago
6

How many solutions does each equation have?

Mathematics
1 answer:
NikAS [45]3 years ago
7 0
1.
2x-2=2x+32x-2=2x+3
notice
2x-3=2x+2
minus 2x both sides
-3=2
false
no solution

2. 5m-4=7m+85m-4
add 4 to both sides
5m=92m
therefor m=0
but wait
5m-4=7m+8
5(0)-4=7(0)+8
-4=8
false
no solution


3.
y+7=y-3
minus y both sides
7=-3
false
no solution



none of them have solutions
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4. Which of the following indicates the multiplication property of equality when solving Vz= 5?
tiny-mole [99]

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D. 21.

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The general form of the equation of a circle is:

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(x + 5)^2 + (y + 7)^2 = 21^2

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A strand of lights has 50 bulbs and eight of them are burned out what is the ratio of total numbers of the bulbs to the bulbs th
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3 years ago
5. If the covariance between the variables x and y is 18 and the variance
klasskru [66]

Answer:

The coefficient of  correlation=0.5

Step-by-step explanation:

We are given that

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We know that

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