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3 years ago

Somebody please help!!!

Mathematics

1 answer:

Mama L [17]3 years ago

8 0

(3x^2+9x-6) - (2x^3-4x^2+6x-4)
Short Answer
2x^3+7x^2+3x-2

Step by Step
1.)2x^3 doesn’t subtract from anything because there are no other trinomials

2.)3x^2 - (-)4x^2 = 7x^2 because a double negative cancels out and you end up adding them

3.)9x-6x=3x

4.)-6 - (-)4 = -2 because double negatives cancel out into addition

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45 is 20% of what number?

nadezda [96]

$x-\ number\\\\
20\%x=45\\\\
\frac{20}{100}x=45\\\\
0.2x=45\ \ \ | divide\ by\ 0.2\\\\
x=225\\\\
45\ is\ 20\% \ of\ 225.$

5 0

3 years ago

Can you answer this one please

creativ13 [48]

Answer:

50⁰

Step-by-step explanation:

Since j and k are parallel lines cut by two transversals,

2+3+5=180⁰ (Allied angles)

We are given 2(60⁰) and 5(70⁰)

so,

60⁰+3+70⁰=180⁰

60+70=130

130⁰+3=180⁰

Bring the 130⁰ to the R.H.S

3=180⁰-130⁰

Therefore,

3=50⁰

6 0

2 years ago

Write an equation from for the amount of money that will be collected if boxes of chocolate bars are sold. Which is the independ

Georgia [21]

The equation would be:
m = 30b where 'm' represents the amount of money and 'b' represents the number of boxes sold.

m is the dependent variable
b is the independent variable

4 0

3 years ago

What is the negation of the statement "All burnt muffins are not edible"

rosijanka [135]

Answer:

because they will taste bad because there burnt

Step-by-step explanation:

7 0

3 years ago

when 200 apples are sold at Rs 1.50 each there will be rupees hundred loss how many apples should be sold for rupees 150 to gain

Lera25 [3.4K]

Answer:

Step-by-step explanation:

Sales price of 200 apples = 300

At this price, there was loss of Rs. 100

Means the cost of the apples was

300 + 100 = Rs. 400

To earn Rs. 100, they should have been sold for Rs. 500

4 0

3 years ago