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2 years ago

(5x to the power of 2 -6x+2)+9x to the power of 2 +10x-7)

Mathematics

1 answer:

xxTIMURxx [149]2 years ago

6 0

Answer:

$45x^{4} -4x^{3} -77x^{2} +62x-14$

Step-by-step explanation:

Im assuming the question was $(5x^{2} -6x+2)(9x^{2} +10x-7)$ if thats not the case then im wrong

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X+4x+6x=? please explain in detail

Stolb23 [73]

X+4x+6x=

All of the variables are x so you don't have to do anything

6x+4x=10x

there is still one x left
x = 1

10x+x = 11x

6 0

2 years ago

In a test (+5) marks are given for every correct answer and (-2) marks are given for every incorrect answer . Roy answered all t

katovenus [111]

Answer:

20 questions

Step-by-step explanation:

Given

$Correct \Marks= +5$

$Incorrect\ Marks= -2$

$Score\ Obtained = 30$

$Number\ of\ correct\ answers = 10$

Required

Number of questions answered

First, we need to get the total correct marks obtained by Roy

This is calculated by multiplying the correct marks by number of correct answers

$Total = +5 * 10$

$Total = +50\ marks$

Subtract this from the total scores obtained; This gives the total incorrect answer obtained by Roy

$Incorrect = Scores\ Obtained - Total$

$Incorrect = 30 - (+50)$

Open bracket

$Incorrect = 30 - 50$

$Incorrect = -20$

Divide this by -2 to get the number of incorrect answers

$Incorrect\ Answers = \frac{-20}{-2}$

$Incorrect\ Answers = 10$

Add this to the number of correct answers to give the total number of question answered

$Total = Correct\ Answers + Incorrect\ Answers$

$Total = 10 + 10$

$Total = 20$

<em>Hence, Roy answered a total of 20 questions</em>

3 0

3 years ago

To join a Yoga club there is a $100 annual fee and a $5 fee for each class you attend.

Leona [35]

Answer:

210

Step-by-step explanation: so 5 times 12 120 plus 100 is 210

5 0

2 years ago

A cruise ship is traveling at 20 miles per hour. Use a direct variation formula to calculate the number of miles traveled in 7 h

34kurt

It would be 20*7 which will give you 140 miles in 7 hours

4 0

2 years ago

Two bowls of pasta at a resaurant serve 3 people how many bowls of pasta should be ordered for 12 people

MrRa [10]

4 bowls of pasta would be served for twelve people.

4×3=12

3 0

3 years ago

Read 2 more answers