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3 years ago

Please help 368.9 − 234.78

Mathematics

1 answer:

Burka [1]3 years ago

5 0

Answer:

134.12

Step-by-step explanation:

Subtraction.

Tell me if you want a step by step.

Hope this helped. :)

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A circle is drawn within a square as shown.

Yakvenalex [24]

As it is shown in the figure, the length of the square's side s is also the length of the circle's diameter d:

s = d = 28 in.

• Computing the area of the square:

A₁ = s²

A₁ = 28²

A₁ = 28 × 28

A₁ = 784 in² ✔

• Computing the area of the circle:

A₂ = π × r²

A₂ = π × (d/2)²

A₂ = π × (28/2)²

A₂ = π × 14²

A₂ ≈ 3.14 × 14 × 14

A₂ ≈ 615.44 in² ✔

—————

• The area of the shaded portion is equal to the difference between the area of the square and the area of circle:

A = A₁ – A₂

A ≈ 784 – 615.44

A ≈ 168.56 in² <——— this is the answer (1st option).

I hope this helps. =)

8 0

3 years ago

The height to the top of the

lara31 [8.8K]

200,836,937,908 Feet

8 0

3 years ago

Read 2 more answers

a random sample of n=24 data from a normal distribution with unkown variance produced x=42.5 and s=26 what is the 95 confidence

iogann1982 [59]

Answer:

95% of confidence intervals are

(31.5215 , 53.4785)

Step-by-step explanation:

Explanation:-

Given sample size 'n' =24

Mean of the sample x⁻ = 42.5

Standard deviation of the sample 'S' = 26

95% of confidence intervals are determined by

$(x^{-} - t_{0.05} \frac{S}{\sqrt{n} } , x^{-} + t_{0.05} \frac{S}{\sqrt{n} })$

Degrees of freedom

ν =n-1 = 24-1 =23

$t_{0.05} = 2.0686$

95% of confidence intervals are

$(42.5 - 2.0686 \frac{26}{\sqrt{24} } , 42.5+ 2.0686 \frac{26}{\sqrt{24} })$

( 42.5 -10.9785 ,42.5 +10.9785)

(31.5215 , 53.4785)

3 0

3 years ago

For this exercise, use the following set of 16 scores (ranked) that con- sists of income levels ranging from about $50,000 to ab

Over [174]

Answer:

The median = Median = $77,153.5

Step-by-step explanation:

Given the data :

199999 98789 90878 87678 87245 83675 77876 77743 76564 76465 75643 66768 65654 58768 54678 51354

Measures of central tendency are used to describe the center or midpoint of a group of observation. They could include the mean, median and mode.

Mean described the average value of the distribution

Median, the middle observation.

Mode, the observation which occurs most

Using online calculator to save time ;

the mean = 83,111.06

Median = 77153.5

For the mode, all the values have a frequency of 1

Plotting the data on an histogram, it could be observed that the Data is positively skewed and hence, not symmetrical.

Since the distribution is not symmetrical, using the mean isn't the best and the mode is also not usable.

Therefore, the median seems to be the best of the 3 measures

5 0

4 years ago

A football quarterback goes for a two-point conversion when the ball is within 10 yards of the end zone. During the game, he has

Crank

Answer:

$P=0.075$ , $P=7.5\%$

Step-by-step explanation:

We look for the probability that the player fails the first attempt and also fails the second attempt.

We know that the probability that the quarterback fails the first attempt is:

$P(1) = 0.5$

We know that the probability that the quarterback fails the second attempt after failing the first is:

$P(2|1) = 0.15$

Then the probability of failure of both attempts is:

$P(2|1)=\frac{P(1\ and\ 2)}{P(1)}$

$P(1\ and\ 2)=P(1)*P(2|1)$

$P(1\ and\ 2)=0.5*0.15$

$P(1\ and\ 2)=0.075$

6 0

4 years ago