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Wittaler [7]
3 years ago
13

Please help me I’m stuck on these questions :(

Mathematics
2 answers:
bagirrra123 [75]3 years ago
6 0

Answer:

Step-by-step explanation:

4) Money per hour = Total Money / Total Hours

=> 240 / 8

=> $ 30 Per Hour

5) There is a line formula which is "y = mx + b".

In this, "m" is the slope.

"b" is the y-intercept.

"y" is the y-axis line.

"x" is the x- axis line.

y-intecept means that a point on the graph which has the x value as "0" and y value as anything.

Slope is rise / run.

So, by looking at the graph, we can tell that the y-intecept is (0,0). So, the y-intercept is 0.

Slope = y2 - y1 / x2 - x1

=> 10 - 0 / 2 - 0

=> 10/2

=> 5

So, the equation looks like y = 5x.

6) This is the same question as the above one.

=> Y - intercept = (0,5)

So, the y-intecept is +5.

Now, the equation is  y = mx + 5

=> Slope.

=> Slope of the points (0,5) and (2,8).

We used points (2,8) because the line passes through these points.

=> 8 - 5  /  2 - 0

=> 3 / 2

So, the equation is y = 3/2x + 5

7)  By looking at Rebecca's equation, we can tell that her hourly pay is $9.25.

For Andrew's hourly pay, we need to find the slope of the points.\

Slope = y2 - y1  / x2 - x1

=> 57 - 47.5  /  6 - 5

=> 9.5 / 1

So, the equation for Andrew looks like  y = 9.5x

So, we can tell that Andrew's hourly pay is 9.5.  Rebecca's hourly pay is 9.25

Natasha_Volkova [10]3 years ago
5 0

Answer:

the person above me is right :)

Step-by-step explanation:

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Jim is investing in the stock market. Jim is hoping to earn $2,000 in interest in order to take a trip to Mexico. Stock A earns
Vanyuwa [196]

Given:

Total amount for investment = $32000

Rate of interest for Stock A = 4%

Rate of interest for Stock B = 7%

Jim is hoping to earn $2,000 in interest.

To find:

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Step-by-step explanation:

Let amount of investments in Stock A = $x

Amount of investments in Stock B = $y

Total amount for investment = $32000

x+y=32000        ...(i)

Rate of interests in Stock A and Stock B are 4% and 7%. Total interests is $2000.

0.04x+0.07y=2000           ...(ii)

From (i) and (ii), we get

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-0.03x=2000-2240

-0.03x=-240

Divide both sides by -0.03.

x=\dfrac{-240}{-0.03}

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Therefore, the amount of investments in Stock A and Stock B are $8000 and $24000 respectively.

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3 years ago
1.
ZanzabumX [31]
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vladimir2022 [97]

The required algebraic expression will be "7(x-5)". A complete solution is provided below.

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