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3 years ago

A system of equations has no solution. If y=8x+7 Is One Of The Equations , Which Could Be The Other Equation?

Mathematics

2 answers:

jonny [76]3 years ago

8 0

Y=8x-7 Is the answer. I hope this helps you <3!!

Arada [10]3 years ago

3 0

A system of equations with no solutions means ur lines will be parallel and will not intersect. A parallel line will have the same slope but different y intercepts.

y = 8x + 7...slope here is 8 and y int is 7

so any equation with a slope of 8 and a y int of anything other then 7 can be ur answer.

such as :
y = 8x + 8 or y = 8x - 12, or y = 8x + 5...

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A train travels 40 miles and 65 minutes to the nearest tenth of a mile how far does the train travel per minute

erik [133]

Answer:1.625

Step-by-step explanation:you just divide 65 and 40

8 0

3 years ago

A 20% acid solution is mixed with 20 liters of a 45% acid solution. How much of a 30% acid solution will result?

vaieri [72.5K]

Answer:

50 liters

Step-by-step explanation:

If x is the volume of 20% acid, then:

x (0.20) + 20 (0.45) = (x + 20) (0.30)

0.2x + 9 = 0.3x + 6

3 = 0.1x

x = 30

30 liters of 20% acid are needed, so there will be a total of 50 liters of 30% acid.

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3 years ago

Select the equivalent expression . ( 8^ -5 2^ -2 )^ -4 =?

Vikki [24]

Answer: C

Step-by-step explanation:

When there is division inside a set of parentheses, you can distribute the power to each term. When you take a power to another power, you multiply the powers.

-5 x -4 = 20

-2 x -4 = 8

So your answer is:

$\frac{8^2^0}{2^8}$

6 0

3 years ago

Ms. Adler bought x bags of

OLga [1]

Answer:

Step-by-step explanation:

Number of bags = Total money spent / Cost of each bag

x = number of bags of chips

Simply divide 17.50 by 1.25 to work out how many bags of chips he can purchase.

Number of bags = Total money spent / Cost of each bag

$x = \frac{17.50}{1.25}$ = ?

8 0

3 years ago

Read 2 more answers

Anne is running on a trail at an average speed of 6 miles per hour beginning at mile marker 4. John is running on the trail at t

Sphinxa [80]

Answer:

John is running faster.

Step-by-step explanation:

Given that:

Average Speed of Anne = 6 miles per hour

Speed of John can be represented in the table below:

$\begin{center}\begin{tabular}{ c c}Time (hours) x & Mile Marker y \\ 0 & 1 \\ 0.5 & 4.5 \\ 1 & 8 \\ 1.5 & 11.5 \\\end{tabular}\end{center}$

To find:

Who is running faster of the both i.e. Anne and John?

Solution:

Here, to find the faster runner we can compare the average speed of both the runners.

We are given that, average speed of Anne = 6 miles per hour

We will have to calculate the average speed of John to find the faster runner.

<em>Average speed</em> can be calculated by dividing the total distance traveled with the total time taken.

Total distance traveled by John = 11.5 - 1 = 10.5 miles

Total time taken by John = 1.5 hours

Average speed of John = $\frac{10.5}{1.5} = 7\ miles/hr$

Clearly Average speed of John is greater than that of Anne's.

Therefore, <em>John runs faster</em>.

6 0

2 years ago