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Step2247 [10]
3 years ago
7

What is the value of x

Mathematics
2 answers:
makkiz [27]3 years ago
5 0
X+81°+x+39°+50°+62°=360
2x+232=360
2x=360-232
2x=128
2x÷2=128÷2
x=64
Lelechka [254]3 years ago
3 0
64
x+81+x+39+50+62=360
2x+232=360
2x=128
x=64
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Please help me with this.
Andrej [43]
a_{n} = +(n-1)d

We are given the first term and the common difference.

So,

a_{1}=-10 \\ \\ d=5

Using these values in the given equation, we get:

a_{n} =-10+(n-1)*5 \\  \\ 
 a_{n} = -10 + 5n - 5 \\  \\ 
 a_{n} = 5n -15

So, option C gives the correct answer.
3 0
3 years ago
Peter was thinking of a number. peter adds 6 to it, then doubles it and gets an answer of 48.5. what was the original numbe
Alisiya [41]

Answer:  The original number was 18.25 or 18 1/4

18.25 plus 6 is 24.25

24.25 times 2 is 48.5

Step-by-step explanation:

mark as brilliant answer

8 0
3 years ago
Read 2 more answers
1/5,1/10,0,_1/10 ...find arthmetic sequence
Papessa [141]
A = 1/5
d = T2-T1
d = 1/10 - 1/5
d = 1/10 - 2/10
d = - 1/10

T4 = 1/5 + 3(-1/10)
= 1/5 - 3/10
= 2/10 - 3/10
= - 1/10
7 0
3 years ago
A box contains 10 red pens and 10 black pens. Which is more likely , that you will pick a red pen or a black pen out of the box?
Norma-Jean [14]

Answer:

it is a fifty fifty chance

Step-by-step explanation:

if they are the same number it is always a fifty fifty chance

8 0
4 years ago
Read 2 more answers
17. Distance to Work Johnny gets to work in 20 minutes
Marrrta [24]

Answer:

2.25 miles

Step-by-step explanation:

When driving a car time taken is 20 minutes. This is equal to 20/60 hours , 1/3 hours / 0.3 hours

When riding a bike , time taken is 45 minutes. This is 45/60 hours , 3/5 hours/ 0.75 hours

The formula for speed is : Speed = Distance covered / time taken

The statement is that the driving speed is greater than biking speed by 4.5 mph

Assuming the distance to work is x miles then;

x/ 0.3 - x/0.75 = 4.5  ------eliminate 0.3 by multiplying each term by 0.3 to get

x- 0.3/0.75 x = 1.35 -------eliminate 0.75 by multiplying each term by 0.75 to get

0.75 x - 0.3 x = 1.0125

0.45 x = 1.0125

x= 1.0125 / 0.45

x = 2.25

6 0
3 years ago
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