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Advocard [28]
3 years ago
15

Really need help what’s the answer

Mathematics
1 answer:
Agata [3.3K]3 years ago
3 0

Answer:

1.5

Step-by-step explanation:

The slope is 1.5. If you look at 3 and 4, you can see it increases by 1.5.

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Each letter of the English alphabet is written on a scrap of paper and put in a hat p(j)= 1/26 what type of probability is illus
Marysya12 [62]
In the situation '<span>Each letter of the English alphabet is written on a scrap of paper and put in a hat p(j)= 1/26', the type of probability illustrated is classical or mathematical probability. This is because 1 represents the number of expected outcomes of the event while 26 represents the total number of outcomes.</span>
8 0
3 years ago
Read 2 more answers
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
Tell me the coordinates to <br> Y= 4/5x - 7.
RSB [31]

Answer:

the pic shows the coordinates

7 0
3 years ago
Read 2 more answers
Please help me on this
emmainna [20.7K]
I got 1/81

hope this helps.
8 0
3 years ago
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Plz help with these first one gets brainliest
vlabodo [156]

Answer:

A=(1,6) B=(1,6)

Step-by-step explanation:

Its the absolotle value between them.

4 0
2 years ago
Read 2 more answers
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