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Likurg_2 [28]
2 years ago
8

Its a math problem Please help me !!! For the data sets below, which of the following statements is FALSE?

Mathematics
1 answer:
Evgesh-ka [11]2 years ago
7 0

Answer:

fist bubble i am pretty sure

Step-by-step explanation:

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What is the equation of the line that passes through the point (-4, 2) and has a<br> slope of ?
Katena32 [7]

Answer:

Step-by-step explanation:

What is the slope please

5 0
4 years ago
Suppose that 12% of test scores for the unit 1 test were above 85 and 8% were below 70. Assuming a normal
Doss [256]

Answer:

Mean = 78.2

Standard deviation = 5.8

Step-by-step explanation:

Mathematically z-score;

= (x-mean)/SD

From the question;

12% of test scores were above 85

Thus;

P( x > 85) = 12%

P(x > 85) = 0.12

Now let’s get the z-score that has a probability of 0.12

This can be obtained from the standard normal distribution table and it is = 1.175

Thus;

1.175 = (85 - mean)/SD

let’s call the mean a and the SD b

1.175 = (85-a)/b

1.175b = 85 - a

a = 85 - 1.175b ••••••••(i)

Secondly 8% of scores were below 70

Let’s find the z-score corresponding to this proportion;

We use the standard normal distribution table as usual;

P( x < 70) = 0.08

z-score = -1.405

Thus;

-1.405 =( 70-a)/b

-1.405b = 70-a

a = 70 + 1.405b ••••••(ii)

Equate the two a

70 + 1.405b = 85 - 1.175b

85 -70 = 1.405b + 1.175b

15 = 2.58b

b = 15/2.58

b = 5.81

a = 70 + 1.405b

a = 70 + 1.405(5.81)

a = 78.16

So mean = 78.2 and Standard deviation is 5.8

4 0
3 years ago
What is the slope of the line that passes through (-3,4) and (-3,-4)
suter [353]

Answer:

undefined

Step-by-step explanation:

We can use the slope formula to find the slope

m = ( y2-y1)/(x2-x1)

    = ( -4-4)/( -3 - -3)

   = ( -4-4)/( -3+3)

   = -8/0

When we divide by zero, the answer is undefined so the slope is undefined

8 0
3 years ago
Area of circle if circumference is 132m
ElenaW [278]

Answer:

1386 cm²

Step-by-step explanation:

Here's your answer!

Hope it helps :)

6 0
3 years ago
Read 2 more answers
Danny answered 70 % questions correctly on his math test. if he answered 35 questions correctly, how man y were on the test
liraira [26]

Answer:

50 questions.

Step-by-step explanation:

70% - 35

100% - \frac{100}{70} × 35 = 50

6 0
3 years ago
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