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Kisachek [45]
3 years ago
15

Find the sum: −11−7−3+1+⋯+225

Mathematics
2 answers:
Sav [38]3 years ago
6 0

Step-by-step explanation:

-11-7-3+1+225

-21+1+225

-20+225

205

Oksana_A [137]3 years ago
4 0

Answer:

205

Step-by-step explanation:

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For #36, why is the answer 4? Plz explain.
luda_lava [24]

I am getting 7 as the value of b. I do not believe 4 is a correct answer!

Here's why:

General equation of a circle in the xy plane

(x-c_x)^2+(y-x_y)^2=r^2

with c_x\,\,\mbox{and}\,\,c_y being the x,y coordinates of the center.

The center point can be determined from the two endpoints of the diameter because the line segment is horizontal, so we just find the center of the x coordinates of the two points:

c_x = -2+\frac{|8-(-2)|}{2}=3\\c_y = 3

and the radius r = diameter/2 = 8-(-2)/2 = 5

so we have

(x-3)^2+(y-3)^2=5^2

Given a point on the circle (0,b) with b>0:

(0-3)^2+(b-3)^2=5^2\\9+(b-3)^2 = 25\\(b-3)^2 = 16\\b=7

6 0
3 years ago
Best skill and skill you want to improve in math?
melomori [17]

Answer:

What do you mean?

Step-by-step explanation:

i guess a skill I want to improve is algebra..?

8 0
3 years ago
Read 2 more answers
a new car is purchased for $17,900 the value of the car depreciates at 13% per year what will the value of the car be to the nea
liberstina [14]

Answer:

The value of the car would be 6753

Explanation

<u>Year     | Value <   |  Deprec. | Balance</u>

Year 1 17900 2327 15573

Year 2 15573 2024 13549

Year 3 13549 1761          11787

Year 4 11787 1532 10255

Year 5 10255 1333 8922

Year 6 8922 1160         7762

Year 7 7762 1009 6753

https://goodcalculators.com/percentage-depreciation-calculator/ - Where I got your answer if you have more problems like this!

3 0
4 years ago
Help I don't think any of them is the correct answer!
pentagon [3]
I agree with you. I added the mixed numbers and got 4 1/10 and that’s not an option.
5 0
3 years ago
Read 2 more answers
Question 2(Multiple Choice Worth 4 points) What is the distance between A and B? Round your answer to the nearest hundredth. 9.5
babymother [125]
B. 10.63 units is the correct answer
8 0
4 years ago
Read 2 more answers
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