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Aloiza [94]
2 years ago
13

Find y to the nearest hundredth place

Mathematics
1 answer:
lidiya [134]2 years ago
7 0

Answer:

you need to attach a picture or more info

You might be interested in
It is assumed that the test results for a class follow a normal distribution with a mean of 78 and a standard deviation of 36. I
HACTEHA [7]

Answer:

0.7143

- You know the minimum possible grade of the student

- You want to find out the probability that that grade which is greater than 72 is also greater than 84

- Expect the answer to be 0.7143

- The explanation/steps is given below

- The answer seems (and is) reasonable. You only created a new lower limit.

Step-by-step explanation:

Distribution Type: Normal

Mean: 78

Standard deviation: 36

Range of marks: [78 - 36], [78 + 36]  = [42 to 114]

If you know that a student's grade is greater than 72, what is the probability that it's greater than 84?

In this case, the full probability level is between 72 and the upper limit of 114 (instead of between 42 and 114). First, find the fraction of this probability.

[114 - 72] ÷ [114 - 42]  = 42/72  = 0.5833

So, the probability of a student's mark falling between 72 and 114 is 0.5833.

Now making this a whole interval, 114 - 72 = 42

What fraction of this interval of 42 will bear marks between 84 and 114?

[114 - 84]  = 30

30/42  = 0.7143

Because of the first part of the question "If you know (are sure) that a student's grade is greater than 72...", your answer stops at 0.7143, since 72 was used as the lower limit.

8 0
2 years ago
Consider the quadratic equation 3x^2-6=2x. (a) What is the value of the discriminant? (b) What does the discriminant of the quad
aleksley [76]

Answer:

(a) discriminant is positive, 76

(b) the above tells you there are two real roots

Step-by-step explanation:

the discriminant is 'b² - 4ac'

3x² - 2x - 6 = 0  ∴ a = 3, b = -2, c = -6

(-2)² - 4(3)(-6) = 4 + 72

5 0
3 years ago
What is the value of the product (3-2)(3 + 2)?
Veseljchak [2.6K]

Answer:

5

Step-by-step explanation:

3 - 2 = 1

3 + 2 =5

5 x 1 =5

3 0
2 years ago
The product of two integers is 72.<br> If one integer is 9 what is the other integer?
lianna [129]

Answer:

8

Step-by-step explanation:

a*b=72

a=9

9*b=72

b=72/9

b=8

6 0
2 years ago
What is the value of x please help me
Tju [1.3M]

Answer:

<h2>x = 4</h2>

Step-by-step explanation:

ΔLMN and ΔPMQ are similar. Therefore thw sides are in proportion:

\dfrac{LM}{PM}=\dfrac{NM}{QM}

We have:

LM = 3 + 9 = 12

PM = 9

NM = x + 12

QM = 12

Substitute:

\dfrac{12}{9}=\dfrac{x+12}{12}                <em>cross multiply</em>

9(x+12)=(12)(12)

9(x+12)=144             <em>divide both sides by 9</em>

\dfrac{9(x+12)}{9}=\dfrac{144}{9}

x+12=16             <em>subtract 12 from both sides</em>

x=4

7 0
3 years ago
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