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mylen [45]
2 years ago
9

8. Solve using any method. 3y – 3 = 3x -3x + 3y = -57

Mathematics
1 answer:
Ksivusya [100]2 years ago
5 0

Answer:

No Solutions.

Step-by-step explanation:

I will solve your system by substitution.

3y−3=3x; −3x+3y=−57

Step: Solve 3y−3=3x for y:

3y−3+3=3x+3 (Add 3 to both sides)

3y=3x+3

(3y/3=3x+3)/3

(Divide both sides by 3)

y=x+1

Step: Substitute x+1 for y in −3x+3y=−57:

−3x+3y=−57

−3x+3(x+1)=−57

3=−57 (Simplify both sides of the equation)

3+(−3)=−57+(−3) (Add -3 to both sides)

0=−60

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slega [8]

Answer:

speed=\frac{195\ miles}{3\ hours}

3\ hours=\frac{195\ miles}{speed}

3\ hours*(speed)=195\ miles

Step-by-step explanation:

we know that

The speed is equal to divide the distance by the time

Let

x -----> the distance in miles

y ----> the time in hours

speed=\frac{x}{y}

we have

The distance is equal to subtract 35 miles from 230 miles

x=230-35=195\ miles

The time is equal to subtract 1:30 pm from 4:30 pm

y=4:30\ pm-1:30\ pm=3\ hours

substitute in the formula of speed

speed=\frac{195\ miles}{3\ hours}

<em>Isolate 3 hours</em>

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<em>Isolate 195 miles</em>

195\ miles=3\ hours*(speed)

7 0
3 years ago
The value of 30, to one decimal place, is approximately what?​
andrew-mc [135]

the answer is 5.5

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so we can round this off to one decimal point

and when we do the final answer will be 5.5

<em>hope</em><em> </em><em>that</em><em> </em><em>helps</em><em> </em><em>!</em>

8 0
3 years ago
If you have a job that earns $120 in 2 days, how much would you earn in 6 days? Use a chart to show the proportion of earnings f
zepelin [54]
To figure this out, we need to use fractional proportions.

Currently, we have $120, the amount earned, and 2 days, the current rate.
Our fraction for this is: 120 / 2 = x / 6, x being the amount earned in 6 days.

Let's use a little technique to help us answer faster.

With our current money earned, 120, and our current days, 2, we can divide 120 by 2 to find out how many we earned in 1 day.

120 / 2 = 60.

We earned $60 per day.

With this formula, 60d, d being the amount of days, we can solve quicker.

We are solving for 6 days, so multiply $60 by 6 days.

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Your proportion is : 

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6 0
3 years ago
A girl successfully made 12 free throws yesterday today she made 150% as a nanny how many successful Fritos did she make today
Bas_tet [7]

Answer:

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Step-by-step explanation:

Given data

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=150/100*12

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6 0
2 years ago
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12345 [234]

Answer:

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Once you simplify it once, you will get:

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After that, you wan to subtract your part from your whole meaning you'd subtract: 25/25 - 13/25

Going back to earlier, you subtract the numerator and leave the denominator the same ONLY because they have like terms(The DENOMINATORS match)

After subtracting, you will get an answer of 12/25ths, which cannot be further simplified either.

Hope this helped!

4 0
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