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3 years ago

Evaluate the expression (6 + 9 ÷ 3) × 7.

Mathematics

2 answers:

Vera_Pavlovna [14]3 years ago

5 0

A: first step is to divide 9 by 3
B: second step is to add 6 and 3
C: 9/3=3
6+3=9
9•7=63

Katarina [22]3 years ago

3 0

Answer:

Step-by-step explanation:

(6+9÷3)×7

division is always first

(6+3)×7

then parenthesis

9×7

multiply

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For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding.

horsena [70]

Answer:

a) p = 0.6346

b) 95% confidence interval

Lower limit: 0.5951

Upper limit: 0.6741

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 572

Number of Santa Fe black-on-whitepots , x = 363

a) proportion of Santa Fe black-on-white potsherds

$\hat{p} = \dfrac{x}{n} = \dfrac{363}{572} = 0.6346$

b) 95% confidence interval

$\hat{p}\pm z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting the values, we get:

$0.6346\pm 1.96(\sqrt{\frac{0.6346(1-0.6346)}{572}}) = 0.6346\pm 0.0395\\\\=(0.5951,0.6741)$

Lower limit: 0.5951

Upper limit: 0.6741

5 0

3 years ago

A certain recipe calls for 2 2/3 cups of sugar. If the recipe is to be doubled, how much sugar should be used?

lawyer [7]

You should double the sugar as well, but first let us simplify the 2 2/3 to become 8/3, then double that to have 16/3,
Which is then can be simplified to 5 1/3

6 0

3 years ago

Read 2 more answers

Write an equation of the line in slop intercept form

Marat540 [252]

Answer:

$m=-\frac{4}{3}$

Step-by-step explanation:

to find the slope use the formula $m=\frac{y_2-y_1}{x_2-x_1}$

$m=\frac{0-4}{0-(-3)}$

simplify

$m=\frac{0-4}{0+3}$

$m=\frac{-4}{3}$

move the negative in front of the fraction

$m=-\frac{4}{3}$

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3 years ago

6. Describe a pattern shown in this sequence, and use the pattern to find the next two terms.

nlexa [21]

Answer:

The pattern is that each time, 8 is added. The next 2 numbers are 47, 55.

Step-by-step explanation:

7+8=15

15+8=23

23+8=31

31+8=39

39+8=47

47+8=55

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3 years ago

FIND THE SLOPE OF THE LINE

schepotkina [342]

Answer:

4/1

Step-by-step explanation:

To get from one dot to the next, you go up by four and to the right by one, making the slope 4/1

3 0

3 years ago