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Neporo4naja [7]
3 years ago
13

Help with a question

Mathematics
1 answer:
jolli1 [7]3 years ago
4 0
 If my above assumption is correct, we can easily find the area of the left side of the rectangle by finding the area of 3 things. The first is the area of the entire region.

At = (0.8)(1.0+1.4) = 1.92

Next we need the area of the circle. Which is pi*r^2, with r being height divided by two. (0.4)
C = 0.502

Finally we need to find the area of the rectangle left region. Which is basically the rectangle from the center of the circle region to the end of the left of the entire region. This is just (1.0)(0.8) = 0.8

Finally we can find the area of the light blue area by just subtracting half the area of the circle (dark blue) from the area we just calculated.
0.8 - (0.502 / 2) = 0.549

Now for the probability we do this area divided by total area.

0.549/1.92 = 0.285 or about 0.29 which is just 29%
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1. Is a rotation of 180° the same as a reflection over the y-axis? Please justify your answer in complete sentences.
sp2606 [1]

Answer:

Not the same.

Step-by-step explanation:

Given that there is a rotation of 180 degrees .  To check whether this is a reflection over the y axis.

Reflection over the y axis make the coordinates (x,y) as (-x,y)

i.e. this means rotation of 180 degrees about the origin anticlockwise.

Hence just rotation of 180 degrees is not the same as a reflection over y axis.

The conditions are:

i) 180 degree to be rotated anticlockwise

ii) Rotation is about the origin

Hence a rotation of 180 degrees need not always be the same as reflection over y axis.

5 0
3 years ago
Stuck on this question. May I please have some help?
Rina8888 [55]

Answer:

So a point is (-3,-5) and the vertex is (-4,-3)

Step-by-step explanation:

This is in vertex form. Vertex form is y=a(x-h)^2+k where (h,k) is the vertex.

The vertex here is (-4,-3)... now just use a value of x to plug in (any value besides -4)

I will choice -3.  This gives -2(-3+4)^2-3

f(-3)=-2(1)^2-3

f(-3)=-2-3

f(-3)=-5

So a point is (-3,-5) and the vertex is (-4,-3)

4 0
3 years ago
Read 2 more answers
........................................................
irakobra [83]
Bbbbnendjxndnnfrijdndjndneieir
8 0
3 years ago
The product of a number and -3 is less than 27
Vaselesa [24]

Answer:

-8

Step-by-step explanation:

-8×-3 =24 thats yeaaaa

3 0
3 years ago
Is 7x=5x-25+30 no solution,one solution, or all real numbers? <br><br> Thank you!
viva [34]

One solution let's find that

\\ \rm\hookrightarrow 7x=5x-25+30

\\ \rm\hookrightarrow 7x=5x+5

\\ \rm\hookrightarrow 2x=5

\\ \rm\hookrightarrow x=5/2

6 0
3 years ago
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