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Ber [7]
3 years ago
11

⚠️15 POINTS+ BRAINLIEST ANSWER ⚠️

Mathematics
2 answers:
kykrilka [37]3 years ago
5 0

Answer:

a. -2

Step-by-step explanation:

the gradient, m is also called the slope

so m=\frac{y_{2} -y_{1} }{x_{2}-x_{1}  }

       = \frac{17-(-11)}{-9-5}

        = \frac{28}{-14}

        = -2

Reil [10]3 years ago
3 0

Answer:

-2

Step-by-step explanation:

Formula for slope: (y2-y1)/(x2-x1)

Plug in the given x and y values

(17-(-11))/((-9)-5)

(17+11)/((-9)-5)

28/(-14)=-2

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A printer takes 7 minutes to print a document with 63 pages. How many pages
Artemon [7]

Create a proportion.

Since it takes 7 minutes to print 63 pages, and half an hour is 30 minutes, you create two ratios(unit per unit) and line up the units(minutes to minutes, pages to pages).

\frac{7 min}{63 pages} = \frac{30 min}{Xpages}

Now you cross multiply, 63 * 30 = 1890 and 7 * x = 7x.

So we have 1890 = 7x.

Then we divide both sides by seven.

\frac{1890}{7} = \frac{7x}{7}

270 = x, therefore you can print 270 pages in half an hour :)

5 0
1 year ago
A box contains 2 plain pencils and 2 pens. A second box contains 1 color pencil and 3 crayons. One item from each box is chosen
Nitella [24]

I know the answer but I dont know how to describe it, sorry

6 0
3 years ago
What is the distance between the y-intercepts of the lines? Adding a picture please help
DerKrebs [107]

The equation of a line is:

y = mx + c

The m is the gradient of the line, and the c is the y-intercept of the line

That means that the y-intercept of [y = -4x + 3]  is 3

and the y-intercept of [y = -4x + 4] is 4

So the distance between the two y-intercepts is:

4 - 3 = <u>1</u>

6 0
3 years ago
Please help with one question
ValentinkaMS [17]

7/3, 6x7/3 is 14, good luck!

5 0
3 years ago
If there are 360 grams of radioactive material with a half-life of 8 hours, how much of the radioactive material will be left af
lyudmila [28]

Answer:

There will be 22.5 grams left after 32 hours.

Step-by-step explanation:

A half-life is how long it takes for half of the amount to go away. In this case, we see that we have two half-life periods worth, which you can determine by dividing the total time by the half-life time.

32hrs/8hrs = 4 half lives.

Now we can raise 1/2 to the power of how many half lives we have (2). Then we multiply that by the amount in the sample.

(1/2)^4 * 360

1/16 * 360

22.5 grams

And this is an exponential function.

4 0
3 years ago
Read 2 more answers
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