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Olenka [21]
3 years ago
15

How many degrees has ABC been rotated counterclockwise about the origin?

Mathematics
2 answers:
andre [41]3 years ago
8 0

Answer:

270 degrees.

Step-by-step explanation:

If the rotation was clockwise we would get to A'B'C'.

This is equivalent to a 360 - 90 = 270 degree counterclockwise rotation.

omeli [17]3 years ago
3 0

Answer:

C

Step-by-step explanation:

It would take 90 degree to rotate clockwise so it will take 360-90=270 degree to rotate counterclockwise

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The base of a parallelogram is 18 inches longer than three times the height. The area of the parallelogram is 216 square inches.
nordsb [41]

Answer:

12 inches

Step-by-step explanation:

Let b represent the base

h represents the height

area of the parallelogram = base * height = 216 square inches

From the question'

b = 18 + 3h

Slot in the value of b

216 = (18 + 3h) * h

expand

216 = 18h + 3h^2

subtract 216 from both sides

0 = 18h + 3h^2 - 216

rearrange

3h^2 + 18h - 216 = 0

divide through by 3

h^2 + 6h - 72 = 0

Now, lets solve!

h^2 + 6h - 12h - 72 = 0

h( h + 6 ) - 12(h + 6) = 0

(h - 12) (h + 6) = 0

h - 12 = 0

h = 12

and

h + 6 = 0

h = - 6

Taking the positive value of h

Hence, the height is 12 inches

Lets check

when h = 12 inches

Area of the parallelogram = 18* 12 = 216 square inches     .... correct

when h = -6inches

A = 18 * -6 ≠  216 square inches

So height is 12 inches

5 0
3 years ago
Write one number as a fraction of another and please explain.
nadezda [96]
48 develop a fault out of the total built which is 2400 therefore
48/2400
If needs to be simplified then 1/50
8 0
2 years ago
If f (x) = 3, what is the value of f (-7)<br><br> A. x -10<br> B. 3<br> C. -4<br> D. -21
Gemiola [76]

Answer:

D

Step-by-step explanation:

3*(-7)=(-21)

7 0
3 years ago
Point P'P
Readme [11.4K]

Answer:

the answer is 500. hope this helps give me brainlest please.

7 0
3 years ago
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sharon has 72 beads. she has twice as many sphere beads as cylinder beads. how many of each kind of bead does sharon have?
Sliva [168]
I think theres 72 sphere beads and 144 cylinder beads.
6 0
3 years ago
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