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velikii [3]
3 years ago
11

PLLLLLLLLZZZZZZ help will give brainliest

Mathematics
1 answer:
Elodia [21]3 years ago
7 0

Answer:A. 3x^2-2x-1+9x+2x^2-3=5x^2+7x-4

B. 5x^3+4x^2-x-3-5x^2-7x+4=5x^3-x^2-8x+1

C. Polynomials are closed under addition and subtraction...

Step-by-step explanation:

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I HAVE 1 MATH QUESTION THAT I REALLY REALLY NEED HELP ON! ONLY COMMENT IF YOU ARE GOING TO HELP. PLEASE I NEED HELP ASAP
babymother [125]
Use y2-y1/x2-x1
So 0-5/3-2
-5/1= m= -5
Then plug it into y=MX+B

0= -5(3)+b
0= -15+b
b=15
y=-5x+15

So I hope this helps but I'm not sure how to plug it into that's equation. The rest of my work is rigt
6 0
3 years ago
Can anyone help me? Will give Brainly!!
raketka [301]

Answer:

y= -x + 4

5 = -x + 4

x = -1

Hope this helps

4 0
3 years ago
The base radius of an ice cream cone is 3.5 cm and the slant height is 6.5 cm. What is the capacity of the ice cream cone and it
ella [17]
The formula of cone's capacity is V = (1 / 3) (pi x r x h)
we know that r = 3.5, we must find h, the slant height is H=6.5, applying pythagorean theorem  h ^2 = H^2, so h= sqrt (H^2 -  r^2)
h =  sqrt (6.5^2 - 3.5^2) = 5.47
 finally, V = (1 / 3)  (3.14 x 3.5 x 5.47) = 20.03 cm^3
 the surface are is A = pi x r x H = 71.43 cm^2
8 0
3 years ago
Read 2 more answers
A game is played using two spinners. Spinner A has four sections labelled 2, 4, 6, 8 and Spinner B has labelled 1, 3, 5. Players
Margarita [4]

Answer:

1500p

Step-by-step explanation:

The spinner A has 4 possible values, and the spinner B has 3 possible values, so the total number of possibilities for both spinners is the product of these number of possibilities:

4 * 3 = 12

From these 12 possible pair of values, the ones that give a sum of 7 are:

(6,1), (4,3) and (2,5).

We have 3 cases where the sum is 7, so the probability of having a sum of 7 is 3/12 = 25%. Therefore, the probability of not having a sum of 7 is 75%

To find the expected value, we multiply the probability of each case by the value it would give. If the player wins, the school loses 10p (the player paid 20p and earned 30p), and if the player loses, the school wins 20p. So the expected value of 120 games is:

120 * (0.25 * (-10) + 0.75 * (20)) = 1500p

6 0
3 years ago
Yang bought thrice as many blue marbles as pink marbles. He spent as much money on the blue marbles as he did on the pink marbke
monitta
Each pink marble is 90 cents. One blue marble is a third the price of a pink marble, and since yang bought 3 times more blue marbles than pink ones, the total prices are equal. Then you account for the difference between the costs. I'm not good at explaining, hope this helped
5 0
4 years ago
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