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4 years ago

Need a lot of help please

Mathematics

1 answer:

frosja888 [35]4 years ago

7 0

First you need to find your total amount of marbles and this number will be your denominator (on the bottom).

8 + 14 + 12 = 34

Then you see how many black marbles are in the bag and this number will be your numerator (on the top).

The probability Jose will pick a black marble is 8/34 but you always reduce your fractions so the correct answer is 4/17.

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What is the remainder R when the polynomial p(x) is divided by (x + 1)? Is (x + 1) a factor of p(x)? p(x) = -3x4 + 2x3 - x2 + 6

vodka [1.7K]

Answer:

(x+1) is a factor with remainder 0.

Step-by-step explanation:

We divide (x+1) into the polynomial $-3x^4+2x^3-x^2+6$ through long division or synthetic. We choose long division and look for what will multiply with (x+1) to make the polynomial $-3x^4+2x^3-x^2+6$ .

$(x+1)(-3x^3)=-3x^4-3x^3$

We subtract this from the original $-3x^4-(-3x^4)+2x^3-(-3x^3)-x^2+6$ .

This leaves $5x^3-x^2+6$ . We repeat the step above.

$(x+1)(5x^2)=5x^3+5x^2$ .

We subtract this from $5x^3-(5x^3)-x^2-(5x^2)+6=-6x^2+6$ . We repeat the step above.

$(x+1)(-6x)=-6x^2-6x$ .

We subtract this from $-6x^2-(-6x^2)+0x-(-6x)+6=6x+6$ . We repeat the step above.

$(x+1)(6)=-6x+1$ .

We subtract this from $6x-(6x)+6-(6)=0$ . There is no remainder. This means (x+1) is a factor.

7 0

3 years ago

Miss Kendrick plans to buy a laptop for $1345 in 12 weeks she has already saved $145 how much did she save each week so that she

enyata [817]

Answer: $100

Step-by-step explanation:

Total Amount needed by MISS KENDRICK = 'X' = $1345

Amount which is already saved by MISS KENDRICK = 'Y' = $145

Number of weeks for the purchase = 'Z' = 12

AMOUNT needed to be saved each week = $\frac{X-Y}{Z}$

By Substituting the values in the equation, we get

AMOUNT needed to be saved each week = $\frac{1345-145}{12}$

= $\frac{1200}{12}$

= $100.

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3 years ago

Bill has fruit trees on his farm, and 42 of them are apple trees. If apple trees represent 35% of all his fruit trees, how many

azamat

Answer:

Step-by-step explanation:

t(35/100)=42

35t=4200

t=120

So there is a total of 120 fruit trees.

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3 years ago

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Harlamova29_29 [7]

Answer:

I belive that the answer is 8

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3 years ago

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Hope this answers the question. Have a nice day.

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4 years ago