Suppose you buy a DVD for 12.98. The sales tax is 7%. What is the total cost?

Kianna lives in a town where the streets are laid out in a grid. She uses a coordinate plane to draw a map of the town, with her

Dmitrij [34]

Answer:

1. The coordinates of Jo’s house are (-4,-2).

2. Kianna walks 8 blocks west, and 2 blocks south.

3. The coordinates of Elena’s house are (4,-2).

4. Kianna is incorrect.

Step-by-step explanation:

1. Since Jo’s house is reflected across both axes, we must reflect the coordinates two times. So we can reflect the coordinates of Kianna’s house across the x-axis first, which would give you the coordinates (4,-2). Then we reflect (4,-2) across the y axis, giving us the coordinates (-4,-2). So Jo’s house has the coordinates (-4,-2).

3. Since Elena’s house is only a reflection of Jo’s house across the x-axis only, we can reflect Kianna’s house’s coordinates (4,2). When we reflect (4.2) over the x-axis, that gives us the coordinates (4,-2). So therefore Elena’s house has the coordinates (4,-2).

4. Kianna is incorrect, if Elena’s house was a reflection of her house across the y-axis, the coordinates would be (-4,2).

(A reflection can be thought of as folding or "flipping" an object over the line of reflection. The original object is called the pre-image, and the reflection is called the image.)

Hope this helps.

7 0

3 years ago

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In a recent Super Bowl, a TV network predicted that 53 % of the audience would express an interest in seeing one of its forthcom

rjkz [21]

<h3>Answer: -0.196</h3>

======================================================

Explanation:

We're conducting a one proportion Z test.

The hypothesized population proportion is p = 0.53, which is not to be confused with the p-value (unfortunately statistics textbooks seem to overuse the letter 'p'). Luckily this problem is not asking for the p-value.

The sample population proportion is

phat = x/n = 41/79 = 0.518987 approximately

The standard error (SE) is

SE = sqrt(p*(1-p)/n)

SE = sqrt(0.53*(1-0.53)/79)

SE = 0.056153 approximately

Making the test statistic to be

z = (phat - p)/(SE)

z = (0.518987 - 0.53)/0.056153

z = -0.19612487311452

z = -0.196

Which is approximate and rounded to 3 decimal places.

3 0

4 years ago

Tyrone's parents bought 9 bags of chips for his party. At the end of the night, 7 1/6 bags have been eaten. How many bags do the

Tatiana [17]

Answer:

Hi there again!! the answer wold be 1 5/6.

Step-by-step explanation:

First subtract 9 by 7. The answer is 2. Now we have 1/6 of a bag eaten, which means there is 5/6 left. But we only have 1 bag left because 5/6 is the second bag. So the answer is 1 5/6!

Please mark me Brainliest! Thank you and have a nice day!

6 0

4 years ago

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Determine the intercepts of the line that passes through the following points (1,2) (3,10) (5,18)

musickatia [10]

Answer:

(1/2, 0), (0, -2)

Step-by-step explanation:

We can determine the slope from ...

slope = (change in y)/(change in x) = (10 -2)/(3 -1) = 8/2 = 4

Then an equation for the line can be written for slope m and point (h, k) as ...

m(x -h) -(y -k) = 0

Using the slope we calculated and the first point, we have the equation ...

4(x -1) -(y -2) = 0

4x -4 -y +2 = 0 . . . . . eliminate parentheses

4x -y = 2 . . . . . . . . . . put in standard form

Now, we can divide by the constant on the right to put this into intercept form:

x/(x-intercept) + y/(y-intercept) = 1

x/(1/2) + y/(-2) = 1

The x-intercept is 1/2; the y-intercept is -2.

3 0

3 years ago

What is the slope of the line represented by the equation<br>vation y = -1/2x+1/4?

hodyreva [135]

Answer:

The slope in the equation is -1/2

6 0

4 years ago

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