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Allushta [10]
3 years ago
15

What value of x will make this expression equal to 28.1?

Mathematics
1 answer:
Rudiy273 years ago
5 0
The answer is x=0 I believe because it is the only logical area
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What’s the answer I just need a quick answer and my teacher thinks I’m wrong
Goryan [66]

Answer:

58.5

Step-by-step explanation:

9 x 13 = 117

117 divided by 2 = 58.5

3 0
2 years ago
PLEASE HELP !! ILL GIVE BRAINLIEST !!
xxMikexx [17]

Answer:

JIG and JIL

Step-by-step explanation:

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2 years ago
Read 2 more answers
Select all of the statements that are true about f(x) =
Nitella [24]

Answer:

3-4

Step-by-step explanation:

thats the answer because i need more points

4 0
3 years ago
the marks in an examination for a Physics paper have normal distribution with mean μ and variance σ2 . 10% of the students obtai
Blababa [14]

Let X be the random variable for the number of marks a given student receives on the exam.

10% of students obtain more than 75 marks, so

P(X>75)=P\left(\dfrac{X-\mu}\sigma>\dfrac{75-\mu}\sigma\right)=P(Z>z_1)=0.10

where Z follows a standard normal distribution. The critical value for an upper-tail probability of 10% is

P(Z>z_1)=1-F_Z(z_1)=0.10\implies z_1=F_Z^{-1}(0.90)

where F_Z(z)=P(Z\le z) denotes the CDF of Z, and F_Z^{-1} denotes the inverse CDF. We have

z_1=F_Z^{-1}(0.90)\approx1.2816

Similarly, because 20% of students obtain less than 40 marks, we have

P(X

so that

P(Z

Then \mu,\sigma are such that

\dfrac{75-\mu}\sigma\approx1.2816\implies75\approx\mu+1.2816\sigma

\dfrac{40-\mu}\sigma\approx-0.8416\implies40\approx\mu-0.8416\sigma

and we find

\mu\approx53.8739,\sigma\approx16.4848

3 0
3 years ago
What Is The Rate Of Change In This Function?
Marrrta [24]

Answer:The answer would be 35 miles per day.

Step-by-step explanation:

We know the x axis is in days and the y axis is the distance in miles. There are only three answers left. We can also cross out 50 miles per day since the  rate of change is less then 50. The answer is 35 miles per day because if the rate of change were to be 25 in 4 days the distance would be 100 miles, while is you look at where the point is at it is closer to 150.

6 0
3 years ago
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