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ella [17]
3 years ago
6

Can someone help me with this problem and show your work

Mathematics
1 answer:
zloy xaker [14]3 years ago
3 0
55 degrees

The supplementary angle is 55 because 180-125=55

Then subtract the interior angles 180-75-55=55
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The given equation has been solved in the table.
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3 years ago
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The sum of the first n positive integers can be found using the formula n(n+1)/2. How many integers must be added to get 253 as
Marizza181 [45]

Answer:

22

Step-by-step explanation:

Using the given expression and the sum, we can set up an equation and solve for the value of 'n':

\frac{n(n+1)}{2}=253

Multiply both sides by '2':  

2(\frac{n(n+1)}{2})=253(2)

n(n+1) = 506

Distribute: n² + n - 506 = 0

Factor:  (n + 23) (n - 22) = 0

Set each equation equal to '0' and solve:

n + 23 = 0    n - 22 = 0

n = -23   or n = 22

Since the problem says the integers are positive, then n = 22.

7 0
3 years ago
Estimate 8,034 – 4,981. Round each number first.
BaLLatris [955]
8,034 is rounded to 8,000. 4,981 is rounded to 5,000. 

The answer is 8,000 - 5,000 = 3,000
5 0
3 years ago
(a) Draw the net of a cube with sides 4 cm;
Lemur [1.5K]
A) draw a cube
i) 16cm
ii) 80 cm
b)64 cm
Ok so draw the outline of a cube with 4cm each. There is six sides and the area is just multiplying 4 by 4. So, since the area of each side is 16, and there is 6 sides, the surface area is 80 cm. The volume is just length x width x height (4x4x4) so it’s 64 cm cubed.
4 0
3 years ago
The average price of a gallon of milk has constantly increased by $0.07 per year. In 2002, a gallon of milk cost $2.75. Which eq
Travka [436]

Answer:

5000o

Step-by-step explanation:

5 0
3 years ago
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