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melomori [17]
3 years ago
13

Help please i dont understand this

Mathematics
1 answer:
Slav-nsk [51]3 years ago
3 0

Answer:

a: x = -4

b: x = 4

c: y = 4

d: y = -2

e: y = -4/3x + 1

Step-by-step explanation:

For lines a & b, since they're vertical lines, they are in the form x = <u>(whatever x-coordinate they intersect)</u>.

So, for line a, since it intersects the x-coordinate of -4, your equation is x = -4.

For line b, since it intersects the x-coordinate of 4, your equation is x = 4.

For lines c & d, since they're horizontal lines, they are in the form y = <u>(whatever y-coordinate they intersect)</u>.

So, for line c, since it intersects the y-coordinate of 4, your equation is y = 4.

For line d, since it intersects the y-coordinate of -2, your equation is y = -2.

For line e, since it appears to be a general linear function, it is in the form y = mx + b (at least in point-slope form, it doesn't specify which form, but I assume this one), where m is the slope and b is the y-intercept.

Remember slope is rise over run, so in line e, you go over 4 units and down 3 units at any particular point, so your slope is -4/3.

To find the y-intercept, just find where the line intersects the y-axis, which is at the point (0, 1), so your b is 1.

To put it all together, your equation for line e is y= -4/3x + 1

I hope that this made sense, if not, feel free to let me know

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dimaraw [331]

Answer:

98 boxes


Step-by-step explanation:

If 56 is  \frac{4}{7} of the total, we can set up an equation like this:

56=\frac{4}{7}*T

Where T is the total number of boxes.

Solving for T gives us the answer:

56=\frac{4}{7}T\\T=\frac{56}{\frac{4}{7}}\\T=56*\frac{7}{4}\\T=98

There were 98 boxes in total.

5 0
3 years ago
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An employee at an electronics store makes $12 per hour, plus a commission of 4.5% of her sales.
Darya [45]

Answer:

The employee earned a total of $1004.40 dollars in commissions this week

Step-by-step explanation:

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That will give you $22320

Then time $22320 by 0.045 which will give you $1004.40

Hope that helps

3 0
2 years ago
An engineering firm designs a custom hexagonal screw for a computer board. A sketch of the top of the screw is below. To the nea
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The area of the screw head is 93.5m².

<h3>How to calculate the area?</h3>

The area of the hexagon can be illustrated based on the formula:

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PLZ HELP ME ON THIS PROBLEM ASAP... PLZ AND THANK YOU
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Answer: y=4x^2-40x+107

Just distribute the equation.

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3 years ago
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