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Mumz [18]
3 years ago
15

I have tried doing both of these trying to skip it but there my last ones

Mathematics
1 answer:
zysi [14]3 years ago
3 0
Hi there!

Let's start with RATIO AND PROPORTION. First, we'll need to set up a proportion to figure out what 7% of 1.42 is. This is the proportion we'll use: x/1.42 = 7/100. Now, let's cross-multiply: 100x = 9.94. Next, we'll divide to figure out what 7% of 1.42 is: x = 0.0994. Lastly, all we need to do is add that value to 1.42 to figure out the total cost: 1.42 + 0.0994 = $1.5194 in total.

GEOMETRY: 
The formula for the circumference of a circle is 2 x pi x radius. Let's plug in the radius to this equation: 2 x pi x 3.1. Now, we need to multiply, first leaving it in terms of pi: 6.2 x pi. The circumference of this circle is 6.2pi or 19.477.

Hope this helps!! :)
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Step-by-step explanation:

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zalisa [80]
We have that
A(-2,-4)  B(8,1) <span>

let
M-------> </span><span>the coordinate that divides the directed line segment from A to B in the ratio of 2 to 3

we know that

A--------------M----------------------B
        2                     3
distance AM is equal to (2/5) AB
</span>distance MB is equal to (3/5) AB
<span>so

step 1
find the x coordinate of point M
Mx=Ax+(2/5)*dABx
where
Mx is the x coordinate of point M
Ax is the x coordinate of point A
dABx is the distance AB in the x coordinate
Ax=-2
dABx=(8+2)=10
</span>Mx=-2+(2/5)*10-----> Mx=2

step 2
find the y coordinate of point M
My=Ay+(2/5)*dABy
where
My is the y coordinate of point M
Ay is the y coordinate of point A
dABy is the distance AB in the y coordinate
Ay=-4
dABy=(1+4)=5
Mx=-4+(2/5)*5-----> My=-2

the coordinates of point M is (2,-2)

see the attached figure

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Step-by-step explanation:

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Step-by-step explanation:

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