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s344n2d4d5 [400]
3 years ago
5

Can someone answer this please? I’m in a rush.

Mathematics
1 answer:
gayaneshka [121]3 years ago
3 0
(-9)+(-6)+(-4)+(-1) is the expression and (-20) is the sum
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-5 x + 10 equals 55 what is X ​
Jobisdone [24]

Answer:

Step-by-step explanation:

I think it’s x=-9

8 0
3 years ago
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If a 12 sided regular polygon rotates about its center at which angle of rotation will the image of the polygon coinside with th
Amanda [17]

Answer: 30 degrees

This is the minimum amount of rotation.

Why this value? Well because 360/12 = 30

Consider a triangle with 3 sides. Specifically I mean an equilateral triangle. We can rotate it 120 degrees to have it line up with itself. Now notice that 360/3 = 120.

For a square, we can rotate it 90 degrees and we can say 360/4 = 90

So the general rule is that the minimum angle of rotation is 360/n, where n is the number of sides. This rule only works for regular polygons. Regular polygons have the same side length and the same angle measure (the side and angle measure won't necessarily be equal).

So going back to this 12 sided dodecagon, we have n = 12 and 360/n = 360/12 = 30 as the minimum angle of rotation. Each 30 degree rotation will have the polygon match up perfectly with its old image. The preimage and image will be identical.

6 0
3 years ago
Divide 33 photos into 2 groups so the ratio is 4 to 7.
kvv77 [185]
So you want two groups that are in a ratio of 4 to 7
so 33=4x+7x
so 33=11x
so x=3

that means the groups are 4*3= 12 and 7*3=21
3 0
3 years ago
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Inverse Function In Exercise,analytically show that the functions are inverse functions.Then use the graphing utility to show th
Anna [14]

Step-by-step explanation:

We need to show whether

f^{-1}(x) = g(x)

or

g^{-1}(x) = f(x)

so we'll do either one of them,

we'll convert f(x) to f^-1(x) and lets see if it looks like g(x).

f(x) = e^x - 1

we can also write it as:

y = e^x - 1

now all we have to do is to make x the subject of the equation.

y+1 = e^x

\ln{(y+1)} = x

x=\ln{(y+1)}

now we'll interchange the variables

y=\ln{(x+1)}

this is the inverse of f(x)

f^{-1}(x)=\ln{(x+1)}

and it does equal to g(x)

g(x)=\ln{(x+1)}

Hence, both functions are inverse of each other!

This can be shown graphically too:

we can see that both functions are reflections of each other about the line y=x.

4 0
3 years ago
If h(x) = 5x – 3 and j(x) = -2x, solve h[j(2)]
Yuki888 [10]

Answer:

-23

Step-by-step explanation:

j(2) = -2(2)

j(2) = -4

h(-4) = 5(-4) -3

h(-4) =-23

5 0
3 years ago
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