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faltersainse [42]
3 years ago
7

How do u solve this math problem ???

Mathematics
1 answer:
zhenek [66]3 years ago
7 0

Answer:

C

Step-by-step explanation:

Because that is the only graph that makes the relationship between the 2 propportional.

at 00 hours she makes 0 dollars

at 1 hour she makes 20 dollars

at 2 hours she makes 40

at 3 hours she makes 60

at 4 hours she makes 80

at 5 hours she mkes 100

at 6 hours she makes 120

and so on...

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If 2x² – 2y = 125 and x - y = 2.5, find the value of<br> x + y
uysha [10]

We can solve this using substitution.

because x-y=2.5

x=y+2.5

Now substitute x into other equation.

2(y+2.5)^2-2y=125

2y^2+10y+12.5-2y=125

2y^2+8y-112.5=0

Now comes the ugly part

y=-4+-sqrt(16+900)

y=-4+-sqrt916

y=-4+-2sqrt229

x=-1.5+-2sqrt229

6 0
2 years ago
Please help with this! Show how you got it!!! Will mark brainliest!!
Ghella [55]

Answer:

sum of interior angles of octagon is 1080 degrees

From figure ,

136 + 132 + 129 + 116 + 158 + 141 + 124 + x = 1080

so, x = 1080 - 936

        = 144

Step-by-step explanation: Simply add the angles and substract the sum from 1080 which is the sum of interior angles of octagon

8 0
3 years ago
Read 2 more answers
Kendra rides her bike to school each day. It takes her 10 minutes to ride 30 blocks. What unit rate would express the speed of K
Kobotan [32]

Answer:

The answer is currently B. 3 blocks per minute!

Hope this helped you out! :D

3 0
3 years ago
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What is the 29th sequence in the triangular number sequence a.k.a the pascals sequence
IrinaVladis [17]
The formula for the triangular sequence is Xn=n(n+1)/2

So X25=25(25+1)/2=325
5 0
2 years ago
Please help me out with #8 surface area and please explain
torisob [31]
Well I certainly understand why you are having grief. I wonder what we know about this thing? The bottom triangle is easy enough to figure out, but are the lines leading up to it parallel? If they are then 5.2 is not correct, or the right
angle symbol is meant to connect to the vertical line closest to us.
What's all the writing to the left and right. What does it say?

Finally what do you know? Can you find area using Heron's Formula for area. I'm going to hold off saying much. You can put a remark somewhere. The magic editor will pick it up and tell me you've done it.
8 0
3 years ago
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