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grandymaker [24]

3 years ago

10

While on vacation in Allenville, Jodie went out for a dinner that cost $40. If sales tax in Allenville is 15% and Jodie left a 1

5% tip on $40, what was the total cost of her meal?

1 answer:

JulijaS [17]3 years ago

6 0

$52 because 15% of 40 is 6 but you have to add it twice so 40 + 6 + 6 = 52. Hope i helped!

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A police officer claims that the proportion of accidents that occur in the daytime (versus nighttime) at a certain intersection

Roman55 [17]

Answer: -1.78

Step-by-step explanation:

As per given description, we have

Population proportion : $p=0.35$

Sample size : n= 500

Sample proportion : $\hat{p}=\dfrac{156}{500}=0.312$

Test statistic for population proportion :-

$z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}\\\\\\=\dfrac{0.312-0.35}{\sqrt{\dfrac{0.35(1-0.35)}{500}}}\\\\=-1.78146747757\ \ \text{(Simplified)}\\\\\approx-1.78$

Hence, the test statistic for this hypothesis test for a proportion= -1.78

3 0

4 years ago

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tamaranim1 [39]

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3 0

3 years ago

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Find the slope<br><br> -3/5<br><br> 3/5<br><br> 5/3<br><br> -5/3

Monica [59]

The slope is y=-5/3x+2

8 0

2 years ago

An angle is 6 more than five times its supplement. Find the measure of the largest angle.

Julli [10]

Supplementary angles add up to 180°

Angle y is the large angle: y= 5x+6

180= x+y
180= (5x+6) + x
180=6x+6
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180= y+29
y=151°

4 0

3 years ago

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Find the distance between each pair of parallel lines with the guven equation y=2x+7 y=2x-3

Doss [256]

Answer:

10

Step-by-step explanation:

The y-intercept for each line is...

y=2x+7 (0, 7)

y=2x-3 (0, -3)

Note this is because...

y=mx+b

b represents the y-intercept

Using the distance formula...

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2$

$d=\sqrt{(0-0)^2+(7-(-3))^2$

$d=\sqrt{0+(10)^2$

$d=\sqrt{0+100}$

$d=\sqrt{100}$

$d=10$

4 0

2 years ago