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lina2011 [118]
3 years ago
7

This problem has been solved!

Mathematics
1 answer:
rjkz [21]3 years ago
5 0

Answer:

1. Precise

2.Both

3.Precise

5.Neither

Step-by-step explanation:

Accuracy is the closeness of a measured value to a standard value.

Precision is the closeness of two or more measurements to each other.

1.The norm is 45 sit-ups in a minute.The students did, 64, 69,65 and 67. Values are not accurate compared to standard value 45.

Values are precise

Answer--Precise

2. Average score is 89.5

  Scores are 89,93,91,87

  Values are precise i.e a difference of 2 from each score

  Values are accurate because the average score is 90 thus compared to      the known average score of 89.5 they are accurate.

Answer-Both

3. Yesterday temperature=89

   Tomorrow=88

    Next day=90

   Average =75

   Values are precise i.e. difference of ± 1°

   Values are not accurate compared to the average temperatures of 75 F

   Answer---Precise

5. The jar contained 568 pennies

   The 6 people guessed the numbers as

    735,209,390,300,1005, 689

  The values are not precise

  The values are not accurate

  Answer---Neither

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3 years ago
Use any method to add or subtract 5/7 {3/14+3/14}
OlgaM077 [116]

Answer:

15/49

Step-by-step explanation:

5/7 (3/14 + 3/14)

first combine like terms

3/14 + 3/14 = 6/14

then simplify by 2

6/14 to 3/7

now that both the term inside and outside have the same denominator, multiply

5/7 x 3/7 = 15/49

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2 years ago
P(x) = 2x² + 1<br> What is the inverse for p(x)?
Serhud [2]

Answer:

P^{-1} (x)=\sqrt{\frac{x-1}{2} }

Step-by-step explanation:

1. P(x)=2x^{2} +1

2. y=2x^{2} +1

3.x=2y^{2} +1

4.2y^{2} =x-1

5.y^{2} =\frac{x-1}{2}

6.y=\sqrt{\frac{x-1}{2} }

7.P^{-1} (x)=\sqrt{\frac{x-1}{2} }

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3 years ago
What is the product of the square of 3 and cube of 5?
Diano4ka-milaya [45]
1,125 should be the answer they are right
4 0
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A baseball is hit with a bat and, as a result, its direction is completely reversed and its speed is doubled. If the actual cont
alexandr402 [8]

Answer:

6.7 /s.

Step-by-step explanation:

Initial velocity = u m/s

From the question, final velocity, v = - 2u m/s

Note - (the minus sign indicates that the direction was reversed and doubled)

t = 0.45

From equation of motion,

v = u + at

Acceleration, a = (v - u)/t

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= - 3u/0.45

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6 0
3 years ago
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