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4 years ago

PLEASE HELP! ASAP! thanks!

Mathematics

1 answer:

WINSTONCH [101]4 years ago

3 0

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Range from 1 to 4

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Please help!<br> What percentage of students scored between 70 and 90?image^

goblinko [34]

Answer:

50%

Step-by-step explanation:

50% of the data, in theory, resides between the first and third quartiles

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3 years ago

Based in the diagram which statement is true

Charra [1.4K]

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14. congruent means "THE SAME" so it will be "A" because there all the same letter.

15. D

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3 years ago

Find the error and correct it

jek_recluse [69]

4=-2(x-3)

divide both sides by 2

2=-(x-3)

remove parentheses

2=-x+3

move terms

2+x=3

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x=3-2

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3 years ago

Make a table of values and create a line of best fit

Anni [7]

<h2>Explanation:</h2><h2></h2>

Hello! remember you have to write complete questions in order to get good and exact answers. Here I'll explain this in a general way assuming the following table:

$\begin{array}{cc}x & y\\0 & 0\\1 & 2\\2 & 4\\3 & 6\\4 & 8\\5 & 10\end{array}$

As you can see, x increases in steps of 1 units. So let's check the difference in y:

$\bullet \ \text{From x=0 to x=1} \\ \\ \Delta y=2-0=2 \\ \\ \\ \bullet \ \text{From x=1 to x=2} \\ \\ \Delta y=4-2=2 \\ \\ \\ \bullet \ \text{From x=2 to x=3} \\ \\ \Delta y=6-4=2 \\ \\ \\ \bullet \ \text{From x=3 to x=4} \\ \\ \Delta y=8-6=2 \\ \\ \\ \bullet \ \text{From x=4 to x=5} \\ \\ \Delta y=10-8=2$

So we have a constant difference and we can conclude the table represents a line. Since the line passes through then y is directly proportional to x, so we can write:

$y=kx \\ \\ Where: \\ \\ k \ is \ constant \ of \ proportionality \ or \ the \ slope$

Then:

$k=\frac{2-0}{1-0}=2$

Finally, the equation of the line is:

$\boxed{y=2x}$

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3 years ago

Find the center and radius of this circle x^2+y^2-6x-10y+30=0

tensa zangetsu [6.8K]

Answer:

Center and Radius

Rewrite in standard form to find the center

(k,h)

and radius r

.Center:

(3,5)

Radius:

7 0

3 years ago