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Mandarinka [93]
4 years ago
11

Cameras R Us has a sale for 25% off camera bags, which is a discount of $20. To find the original cost of the camera bag, Tara c

reates the following diagram.
A 2-column table with 6 rows. Column 1 has entries 20 percent, 20 percent, 20 percent, 20 percent, 20 percent, Total 100 percent. Column 2 has entries 25 dollars, 25 dollars, 25 dollars, 25 dollars, 25 dollars, blank total.

What errors did Tara make in her diagram? Check all that apply.
There should be 5 rows labeled 20%.
The 25 should be for each percent, not dollar amounts.
The percents do not add up to a whole of 100%.
There should be 4 columns of 25% that each equal $20.
Mathematics
2 answers:
Tems11 [23]4 years ago
7 0

Answer:

it is b and d trust

Step-by-step explanation:

edge2020

balandron [24]4 years ago
4 0

Answer:

B and D.

Step-by-step explanation: Just took the test.

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A waterfall is n times the height of its picture on a postcard.
densk [106]

Answer: y=6n

Step-by-step explanation:

8 0
3 years ago
Find the value of $B - A$ if the graph of $Ax + By = 3$ passes through the point $(-7,2),$ and is parallel to the graph of $x +
Salsk061 [2.6K]

Answer:

-6

Step-by-step explanation:

We know that since Ax + By = 3 passes through (-7, 2), then if we plug -7 in for x and 2 in for y, the equation is satisfied. So, let's do that:

Ax + By = 3

A * (-7) + B * 2 = 3

-7A + 2B = 3

We also know that this line is parallel to x + 3y = -5, which means their slopes are the same. Let's solve for y in the second equation:

x + 3y = -5

3y = -x - 5

y = (-1/3)x - (5/3)

So, the slope of this line is -1/3, which means the slope of Ax + By = 3 is also -1/3. Let's solve for y in the first equation:

Ax + By = 3

By = -Ax + 3

y = (-A/B)x + 3/B

This means that -A/B = -1/3. So, we have a relationship between A and B:

-A/B = -1/3

A/B = 1/3

B = 3A

Plug 3A in for B into the equation we had where -7A + 2B = 3:

-7A + 2B = 3

-7A + 2 * 3A = 3

-7A + 6A = 3

-A = 3

A = -3

Use this to solve for B:

B = 3A

B = 3 * (-3) = -9

So, B = -9 and A = -3. Then B - A is:

B - A = -9 - (-3) = -9 + 3 = -6

The answer is -6.

<em>~ an aesthetics lover</em>

7 0
4 years ago
Read 2 more answers
Three dentists wanted to compare the ages of their patients. They each calculated their patients’ mean age and the mean absolute
juin [17]
Its Dr. Appiah’s patients’ ages vary less than do Dr. Singh’s patients’ ages and <span>Dr. Cantwell’s patients’ ages and Dr. Singh’s patients’ ages vary about the same amount.</span>
8 0
4 years ago
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If sin theta=-1/4 and theta terminates in the third quadrant, find the exact value of sin2 theta.
DIA [1.3K]

Answer:

sin(2\theta)=\frac{\sqrt{15}}{8}

Step-by-step explanation:

We are given

sin(\theta)=-\frac{1}{4}

Firstly, we can draw triangle

angle lies in third quadrant

so, we get

cos(\theta)=-\frac{\sqrt{15} }{4}

now, we can use formula

sin(2\theta)=2sin(\theta)\times cos(\theta)

now, we can plug values

sin(2\theta)=2\times -\frac{1}{4}\times -\frac{\sqrt{15} }{4}

now, we can simplify it

and we get

sin(2\theta)=\frac{\sqrt{15}}{8}

7 0
4 years ago
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What is the place value digit of the digit 7 in 74,310,892
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Answer:

tens of millions

Step-by-step explanation:

TM M HT TT T H T U

7 4 3 1 0 8 9 2

7 0
2 years ago
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