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Sidana [21]
3 years ago
5

Needing Help With These Problems! I Have TONS!

Mathematics
1 answer:
Vilka [71]3 years ago
5 0

Answer:

B.

Step-by-step explanation:

The X-values are between -1 and 5. --> -1 ≤ x ≤ 5

The Y-values are between -4 and 2. --> -4 ≤ Y ≤ 2

Looking at the answer which matches up with these, you get B.

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A recent survey found that 7575​% of all adults over 50 wear glasses for driving. In a random sample of 4040 adults over​ 50, wh
malfutka [58]

Answer:

Mean = 30

standard Deviation = 2.74

Step-by-step explanation:

Formula

mean = np

Standard Deviation = \sqrt{npq}

from the question = 40

P = 75% or 0.75

q = 1 - p = 1 - 75% or 1 - 0.75

To find mean

mean = 40 x 0.75

           = 30

For Standard Deviation (SD)

Standard Deviation = \sqrt{npq}

       = \sqrt{40 X 0.75 X 0.25

      = \sqrt{7.5}

:. Standard  Deviation       = 2.74

5 0
2 years ago
Samantha can complete her homework in 3/5 of an hour her brother can complete it in 5/6 of that time what part of an hour does i
s2008m [1.1K]
I think it takes her brother 30 minutes to complete his homework.

Because 3/5 of an hour is 36/60

5/6 = 30/36

Hope this helps! :)
4 0
2 years ago
Help me please explain
Vera_Pavlovna [14]

Answer:

x=6,-4

Step-by-step explanation:

Ok so we know the 2 angles are congruent so you need to set them equal to each other. x^2+5x=7x+24. Then get the x's together so you subtract by 7x to get x^2-2x=24. You would then get 24 on the other side so subtract by 24 to get x^2-2x-24. You then would need to factor the equation out. The factored form would be (x-6)(x+4). Then set it equal to 0 to get 6 and -4.

7 0
2 years ago
*PLEASE ANSWER, DIFFICULT QUESTION*
Serjik [45]

Answer:

d.) simplify the expression inside the pipe symbols

5 0
2 years ago
Jonathan and Tim want to predict how many quarters are in a large jar containing 120 coins. Jonathan randomly selects a sample o
Anastaziya [24]


 the larger the sample the more accurate the prediction

 so since Tim looked at a larger quantity of coins his would be more accurate

8 0
3 years ago
Read 2 more answers
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