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tino4ka555 [31]
2 years ago
8

Ana is taking a standardized test. The test has 25 questions consisting of multiple choice and short answer questions. Each mult

iple choice question is worth 3 points and the short answer questions are worth 8 points for a total of 150 points. How many multiple choice questions and short answer questions are there on the test? Solve by combination/elimination.
Mathematics
1 answer:
tatyana61 [14]2 years ago
8 0
10 Multiple choice questions and 15 short answer questions

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3 years ago
The monthly revenue of a certain company is given by R 820p-7p, where p is the price in dollars of the product the company manuf
lora16 [44]

The revenue will be 12,000 when the price of the product  is $100

Given :

The monthly revenue of a certain company

R=820p-7p^2

We need to find out p when <u>Revenue R is 12000</u>

Lets replace R with 12000 and solve for p

12000=820p-7p^2\\820p-7p^2=12000\\-7p^2+820p-12000=0

Apply <em>quadratic formula </em>

p=\frac{-820\pm \sqrt{820^2-4\left(-7\right)\left(-12000\right)}}{2\left(-7\right)}\\p=\frac{-820\pm \:580}{2\left(-7\right)}\\p=\frac{-820+580}{2\left(-7\right)},\:p=\frac{-820-580}{2\left(-7\right)}\\p=\frac{120}{7},\:p=100

Given that price must be greater than 50

So the revenue will be 12000 when the price of the product  is $100

Learn more :  brainly.com/question/21503855

5 0
2 years ago
8x-6y=36 <br> solve the linear equation
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Answer:

The below is the answer to the equation. 4.5, 0

Step-by-step explanation:

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Answer:

you are correct

Step-by-step explanation:

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2 years ago
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