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( 5n 3 + n 4 - 5 ) - ( -5 - 6n 3 - 4n 4 ) A) 5n 4 + 11n 3 B) 5n 4 + 11n 3 + 2 C) 4n 4 + 11n 3 + 2 D) 4n 4 + 19n 3 + 2

Answers

Answer 1

Answer:

Answer:

i got 53 n

Step-by-step explanation:

could be wrong but try lol

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how much 45% acid solution should be mixed with a 30% acid solution to make 450 ml of a 40% acid solution?

Answers

We do as follows:

let x = amount of 45% solution
y = amount of 30% solution

overall balance => x + y = 450
acid balance => .45x + .30y = .40(450)

Solving simultaneously, we will have:

x = 300 mL
y = 150 mL

This is assuming that partial molar properties does not affect the volume greatly. Hope this answers the question. Have a nice day.

I NEED AN EXPLANATION PLEASE!! I need a fast answer

Answers

Answer:

B) 74 degrees

Step-by-step explanation:

three angles = 180

2x+32=180

2x=148

x=74

Hope this helps plz hit the crown :D

Answer:

i think B which is 74

Step-by-step explanation:

Corey tosses 4 fair coins. What is the probability that all four coins will land tails up?

Answers

Answer:

4/8

Step-by-step explanation:

I am almost 100 percent sure it’s 4/8

Hi can somebody check if this is correct please?

Answers

Answer:

No, it is incorrect. The line should be solid, not dotted, because it's a ≤ sign, not a < sign.

A new homeowner is mulching a flower bed in his back yard. The flower bed is 9 feet long and 3.5 feet wide. How many square feet will be needed to cover it in mulch?

Answers

Answer:

31.5ft²

Step-by-step explanation:

Formula for area:

Area = Length * Width

Calculate area by substituting in known values

Area = 9 * 3.5

Area = 31.5ft²

31.5ft²

Hope this helps :)

What are the zeroes of f(x) = y2 - 2x - 3?

Answers

Answer:

Step-by-step explanation:

Product = -3

Sum = -2

Factors = -3 , 1

y² - 2y - 3 = y² + y - 3y - 3

= y( y + 1) - 3(y + 1)

= (y +1) (y - 3)

Answer:

x=y^2/2 - 3/2

Step-by-step explanation:

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