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3 years ago

-k+3k please help, middle school math

Mathematics

1 answer:

castortr0y [4]3 years ago

5 0

Answer:

Step-by-step explanation:

Adding a negative is the same as subtracting. Change this to be 3k-k and then solve.

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IQR=36-16.. which would give you 20!

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3 years ago

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The length of ZX is 2 units. What is the perimeter of triangle XYZ?

dezoksy [38]

Keywords

triangle,perimeter,distance, length, side, points

we know that

The perimeter of a triangle is the sum of the three length side

To find the length side calculate the distance between two points

The formula to calculate the distance between to points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

Step 1

Find the distance ZY

$Z(1,0)\\Y(3,1)$

substitute the values

$d=\sqrt{(1-0)^{2}+(3-1)^{2}}$

$dZY=\sqrt{5}\ units$

Step 2

Find the distance XY

$X(-1,4)\\Y(3,1)$

substitute the values

$d=\sqrt{(1-4)^{2}+(3+1)^{2}}$

$dXY=\sqrt{25}=5\ units$

Step 3

Find the perimeter of the triangle

$P=ZX+ZY+XY$

we have

$dZX=2\sqrt{5}\ units$

$dZY=\sqrt{5}\ units$

$dXY=5\ units$

Substitute

$P=(2\sqrt{5}+\sqrt{5}+5)\ units$

therefore

the answer is

$P=(3\sqrt{5}+5)\ units$

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3 years ago

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What is a square root? (√) Multiplication is a number added several times and and exponent is the number times itself. So what i

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3 years ago

SHOW ALL WORK PLEASE HELP ME!!!!!

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Hello,
Please, see the attached files.
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3 years ago

HELP PLEASE I NEED THIS DONE ASAP

Nata [24]

a). 0.45 with a line over the 45 means 0.45454545454545... forever.

It's equivalent to 45/99 which is 5/11 .

b). 0.45 with a line over the 5 means 0.455555555... forever.

It's equivalent to (0.4 + 0.555555.../10)

The 0.4 part is 4/10

The 0.5555555555.../10 part is 5/90 .

(4/10) + (5/90) = 41/90

c). 0.45 means 45/100 . That's 9/20 .

I don't think you're supposed to be posting unit test questions on Brainly.

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3 years ago