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3 years ago

Please help me !

Mathematics

2 answers:

Alik [6]3 years ago

8 0

Solve for x in the second equation first

kumpel [21]3 years ago

8 0

Answer:

Solve for x in the second equation.

Step-by-step explanation:

To solve a system of equations by substition you have to solve one of the equations for X or Y and then substitute that value on the X of the other equation, if you want to avoid fractions, you can use the x of the secon equation, like this:

$6x+18y=24\\6x=24-18y\\x=\frac{24-18y}{6} \\x=4-3y$

So by solving X for the second equation you avoided fractions when substituting the value for X on the first equation.

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PLEASEEEEE HURRRYYYY

solmaris [256]

Hi!~

Answer:

C) -5 is located to the LEFT of 2

Step-by-step explanation:

On a number line, of course the negatives (-) are to the left while the positives (+) are to the right, so since -5 is negative, and 2 is positive, -5 is located to the LEFT of 2.

Hope this helps! :)

4 0

2 years ago

In New York, state sales tax rates vary by county. In Allegany County, the sales tax rate is 8 1 2 %. a. A book costs $12.99, an

ArbitrLikvidat [17]

Answer:

$ 2.30

Step-by-step explanation:

Given that the sales tax rate $= 8\frac{1}{2}\%=8.5\%$

The cost of the book is $ 12.99.

So, the tax on the book= 8.5% of 12.99

$= \frac {8.5}{100}\times 12.99$

=1.10

So, the sales tax on the book is $ 1.10.

The cost of the video game is $ 39.99.

So, the tax on the book= 8.5% of 39.99

$= \frac {8.5}{100}\times 39.99$

=3.30

So, the sales tax on the book is $ 3.40.

The difference of taxes on both the items = $ 3.40-$ 1.10=$ 2.30

So, the tax on the video game is $ 2.30 more than then tax on the book.

3 0

3 years ago

Sarah read 64 1/2 pages of her book in 6 hours. What is the average number of pages that Sarah reads per hour?

MAVERICK [17]

Answer:

We conclude that the average number of pages that Sarah reads per hour will be: 10.75 page per hour

Step-by-step explanation:

Given

Number of pages Sarah read $=64\frac{1}{2}=\frac{129}{2} = 64.5$

Number of hours Sarah spent = 6 hours

The average number of pages per hour can be calculated by simply dividing the total number of pages i.e. 64.5 pages by the number of hours spent on reading i.e. 6 hours.

Thus,

Average number of pages per hour = 64.5 pages / 6 hours

= 10.75 page per hour

Therefore, we conclude that the average number of pages that Sarah reads per hour will be: 10.75 page per hour

8 0

3 years ago

Help it’s due soon!

xz_007 [3.2K]

Answer:

25%

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

The graph represents the distance in miles, y that Car A travels in x minutes. The function y =

dusya [7]

<h2>Explanation:</h2>

Hello! Remember you have to write complete questions in order to get good and exact answers. Here you have provided neither the graph nor the equation, so I could help you providing my own graph and equation. From physics, we know that speed, time and distance are related in the following form:

$distance=speed \times time \\ \\ \\ If: \\ \\ d:distance \\ v:speed \\ t:time \\ \\ \\ Then: \\ \\ d=vt$

So $v$ is the slope of a line that passes through the origin where $d$ matches the y-axis and $t$ matches the x-axis. So we can write:

$y=mx \\ \\ \\ y\rightarrow d \\ \\ m\rightarrow v \\ \\ x\rightarrow t$

From the graph, we can know that:

$y=40x \\ \\ \\ \text{Because the slope is:} \\ \\ m=\frac{40-0}{1-0}=40$

And the equation that I provide is:

$y=60x$

If both speeds are given in mi/h, then by comparing them, we can say that <em>the speed (rate) of the first car (graph) is 20mi/h less than the speed of the second car (equation)</em>

8 0

3 years ago