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andrew-mc [135]
3 years ago
11

I need a system of equations. Please hurry.

Mathematics
1 answer:
Anna11 [10]3 years ago
5 0
X= vinyl
y =treated

5x+2y=50

x+2y=30
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svetoff [14.1K]

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22.5

Step-by-step explanation:

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A bag has 3 red marbles, 2 blue and 4 yellow. What is the theoretical probability of pulling a red?
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Answer:1/3

Step-by-step explanation:

3 (amount of reds)

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3+2+4 (sum of all marbles red+Blue+Yellow)          

simplfy

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S t are positive integers
Sindrei [870]

Given:

The expanded form of (x+s)(x-t) is x^2+Kx-40.

Where, s, t, K are positive integers.

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Solution:

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(x+s)(x-t)=x^2+Kx-40

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On comping both sides, we get

K=s-t              ...(i)

K is a positive integer if s>t.

And

st=40

The factor pairs of 40 are (1,40), (2,20), (4,10), (5,8), (8,5), (10,4), (20,2) and (40,1).

Since s>t, therefore the possible values for (s,t) are (8,5), (10,4), (20,2) and (40,1).

Using (i), find the value of K for each factor pair.

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3 years ago
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Step-by-step explanation:

Solve:

7 - 3p + 4p

Simplify using like terms

Wrote problem using addition

7 + ( -3p + 4p)

7 + 1p or 7 + p

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3 years ago
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The diameter of a circle is 18 meters. What is the circle's area?
Anarel [89]

Answer:

254.45 meters squared

Step-by-step explanation:

Well the radius is 9 and that squared is 81 then that times pi is 254.45.

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