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Aleks [24]
3 years ago
14

Let the cost of a pen be dollars. Write an expression for the total cost of four pens and seven mechanical pencils in terms of .

Mathematics
1 answer:
lions [1.4K]3 years ago
7 0

Answer:

4x +7 = ?  

Step-by-step explanation:

It was easy except you need more info to solve the equation

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Deanna gets 3 problems incorrect on her math quiz and scores 85%. How many questions were on the quiz?
katrin2010 [14]

Answer:

There were 20 questions on the quiz

Step-by-step explanation:

In this question, we are concerned with knowing the number of questions on a quiz, given that Deana had a certain percentage after scoring an amount of marks.

We proceed as follows;

Let the number of questions on the quiz be X.

Now, she got 85% by making 3 incorrect choices. This means the percentage of questions she got incorrectly would be 100-85 = 15%

what we are saying is that it is just 15% of her questions that were wrong.

This mathematically;

15% of x = 3

15/100 * x = 3

15x = 3 * 100

15x = 300

x = 300/15

x = 20

5 0
3 years ago
Explain how you can use the inscribed angle theorem to justify its second corollary
kirill [66]

Answer:

The angle inscribed in a semicircle is a right angle. The inscribed angle theorem states that the angle θ, inscribed in a circle is half the measure of the central angle of the circle. So, if the given is a semi-circle, then the inscribed angle is half of 180, therefore, 90 degrees and a right angle

5 0
3 years ago
Read 2 more answers
Marci works at a hardware store. One cash flow estimate for their power tools department is $56,700, and the probability assessm
worty [1.4K]

Answer:

The given data represents, the 30% of TOTAL CASH INFLOW = $56,700 and it is in the power tools department.

Step-by-step explanation:

Here, according to the question:

The estimated cash flow of POWER TOOLS department  =  $56,700

Also, the probability assessment = 30%

So, the given 30% determines the percentage of cash flow in POWER TOOLS DEPARTMENT in comparison to the TOTAL CASH FLOW.

Here, Maci is trying to find out the portion of the cash inflow in power tools department with respect to the cash flow of other departments in the hardware store.

The given data represents, the 30% of TOTAL CASH INFLOW = $56,700 and it is in the power tools department.

7 0
2 years ago
6% as ratio in simplest form.
Kitty [74]

Answer:

3 : 50

Step-by-step explanation:

6% = 0.06

0.06 = 6/100

6/100 = 3/50

3/50 = 3 : 50

6 0
3 years ago
Someone PLEASE help me this is insane!
yaroslaw [1]

Answer: I think -131

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
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