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Rina8888 [55]
2 years ago
12

One student solved the inequality −4 > x /−7 and got 28 < x. Another student solved the inequality and got x > 28. Are

they both correct? Explain.
Mathematics
1 answer:
fomenos2 years ago
4 0

Answer:

Step-by-step explanation:

-4 > x / -7....multiply both sides by -7, and flip the sign

-4 * -7 < = x

28 <  x....or x > 28

yes, they are both the same.

28 < x ....this is saying that 28 is less then x

x > 28....this is saying that x is greater then 28

so there both saying the same thing

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Find the gradient of the line segment between the points (2,3) and (-3,8).
fiasKO [112]

Answer:

m = -1

Step-by-step explanation:

Given

Points (2,3) and (-3,8)

Required

Determine the gradient

Gradient (m) is calculated by dividing the change in y values by the change in x values.

i.e.

m = \frac{y_2 - y_1}{x_2 - x_1}

Where:

(x_1,y_1) = (2,3)

(x_2,y_2) = (-3,8)

m = \frac{y_2 - y_1}{x_2 - x_1} becomes

m = \frac{8 - 3}{-3 -2}

m = \frac{5}{-5}

m = -1

<em>Hence, the gradient is -1</em>

7 0
2 years ago
What is the answer to 5 and 3/4 - 2 1/4
sergey [27]

Answer:

<h2>The answer you are looking for is 3 and 1/2</h2><h2>(or 7/2 or 3.5)</h2>

Step-by-step explanation:

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8 0
2 years ago
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Solve the system using elimination.<br> y=-x-3<br> y=x2-15
Phoenix [80]

Answer:

X=4, y=-7

Step-by-step explanation:

To use elimination method, you want to cancel x or y when adding the equations together. So let’s multiply the first equation by -2

2(y)=2(-x-3)

2y=-2x-6

——————

add above equation 2y=-2x-6

to second equation    Y=2x-15

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—————————————-

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7 0
2 years ago
PLEAS HELP!
romanna [79]

Answer:

The answer is 15 m.

Step-by-step explanation:

7 0
3 years ago
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