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Ahat [919]
3 years ago
15

What is the first step in evaluating {[( − )]} ÷ ?

Mathematics
1 answer:
prohojiy [21]3 years ago
3 0

Answer:

The first step in evaluating {[(−)]}÷ is operating the brackets

Step-by-step explanation:

To find the first step in evaluating {[(−)]}÷ :

In general we may use BODMAS operation to evaluate the expression and is stands for

BODMAS- B for Brackets in the expression

                 O for operations in brackets for the expression

                 D for  doing division operation in the  expression

                M for doing multiplication operation in the expression

                 A for  doing addition operation in the expression

                 S for doing subtraction operation in the expression

Applying all the operations and finally weget the evaluated expression or values.

Therefore the first step in evaluating {[(−)]}÷ is operating the brackets

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given the circumference of a circle is 29.5 in find the radius to the nearest tenth use 3.14 for the value of pie
Kitty [74]

Answer:

The radius of the circle is 4.7 in

Step-by-step explanation:

To solve this problem we have to use the circumference formula

c = circumference = 29.5in

r  radius

π = 3.14

c = π * 2r

we replace with the known values

29.5 in= 3.14 *  2 * r

29.5 in / (3.14 * 2)

29.5 in / (6.28)

4.69745 in

round to the nearest tenth

4.69745 in = 4.7 in

The radius of the circle is 4.7 in

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Answer:

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Step-by-step explanation:

8 0
3 years ago
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musickatia [10]
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3 years ago
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With individual lines at its various windows, a post office finds that the standard deviation for normally distributed waiting t
anastassius [24]

Answer:

H0 : σ²= 7.2²

H1 : σ² < 7.2

We can conclude that the mean waiting time of customers vary less, Than 7.2 minutes.

Step-by-step explanation:

H0 : σ²= 7.2²

H1 : σ² < 7.2²

The test statistic :

X² = [(n - 1)*s² ÷ σ²]

s² = 3.5

n = sample size = 25. ; s²

X² = [(25 -1)*3.5² ÷ 7.2²

X² = (24 * 3.5^2) / 7.2^2

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Pvalue from Chisquare statistic :

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Pvalue < α ; we reject the Null.

Hence, we can conclude that the mean waiting time of customers vary less, Than 7.2 minutes.

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3 years ago
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