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motikmotik
3 years ago
10

What is the 25th term of this arithmetic sequence?

Mathematics
1 answer:
PilotLPTM [1.2K]3 years ago
4 0
The 25th arithmetic term will be -67
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Please help i need to finish this test in lest than an hour
In-s [12.5K]

Answer:

−

k

2

2

+

3

k

3

4

Step-by-step explanation:

5 0
3 years ago
According to an article in Newsweek, the rate of water pollution in China is more than twice that measured in the US and more th
jeyben [28]

Answer:

(a) 0.119

(b) 0.1699

Solution:

As per the question:

Mean of the emission, \mu = 11.7 million ponds/day

Standard deviation, \sigma = 2.8 million ponds/day

Now,

(a) The probability for the water pollution to be at least 15 million pounds/day:

P(X\geq 15) = P(\frac{X - /mu}{\sigma} \geq \frac{15 - 11.7}{2.8})

P(X\geq 15) = P(Z \geq 1.178)

P(X\geq 15) = 1 - P(Z < 1.178)

Using the Z score table:

P(X\geq 15) = 1 - 0.881 = 0.119

The required probability is 0.119

(b) The probability when the water pollution is in between 6.2 and 9.3 million pounds/day:

P(6.2 < X < 9.3) = P(\frac{6.2 - 11.7}{2.8} < \frac{X - \mu}{\sigma} < \frac{9.3 - 11.7}{2.8})

P(6.2 < X < 9.3) = P(- 1.96 < Z < - 0.86)

P(6.2 < X < 9.3) = P(- 1.96 < Z < - 0.86)

P(Z < - 0.86) - P(Z < - 1.96)

Now, using teh Z score table:

0.1949 - 0.025 = 0.1699

4 0
3 years ago
how do you  figure out the ratio stars to squares when there are 11 squares 5 stars and two circles in the data?
weeeeeb [17]
Ok, first you have to just completely ignore the circles, they arent important. 
Secondly, The ratio is, 5 stars to every 11 squares
4 0
3 years ago
Read 2 more answers
I NEED THIS REALLY QUICK ILL GIVE BRAINLIEST AND 5 STARS PLEASE AWNSER
Elan Coil [88]
The answers is 14 if you follow the equation i just did it on a calculator (attached)
5 0
2 years ago
Read 2 more answers
a ships triangular signal flag has a base of 8 inches and an area of 64 square inches.what is the height of the signal flag?
wel
Area of a triangle is 1/2b×h
a=1/2b×h
64=1/2 8×h
64= 4 × h
64÷4=16

Answer: the height is 16 inches

4 0
3 years ago
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