3 years ago

Expand and simplify (x-5)(x+5)

Mathematics

1 answer:

BigorU [14]3 years ago

4 0

The answer is X^2 - 25 click on the box for more details or explain.

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Round 425 feet in hours

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Feet to hour really????

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Suppose that an urn contains 3 black marbles, 7 yellow marbles, and 10 green marbles. If one marble is selected, determine the p

Yuliya22 [10]

Answer:

1/2

Step-by-step explanation:

Simple probability is a ratio of the number of ways the thing we want to happen can to the total possible outcomes.

(For example, we flip a coin and want heads, but it can land on heads or tails. Our probability of getting heads is 1/2, one way to get heads over the 2 possible outcomes)

So for this problem, there's 20 possible things that CAN happen (3 + 7 + 10) and 10 ways we get what we want (a green marble).

Our probability of getting a green marble is $\frac{10}{20\\}$ , which simplifies to $\frac{1}{2}$

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3 years ago

What is the solution to the system of equations? y = 1/3x – 10 2x + y = 4

kolezko [41]

The solution is (6, -8) (solved by graphing with Desmos.com/calculator)

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3 years ago

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If EF = 2x+13, FG = 20, and EG = 71 what's the value of x

klemol [59]

Answer:

Step-by-step explanation:

|<----------------- 71 ----------------------->|

E-----------------------F---------------------G

2x + 13 20

find: x

EF + FG = DG

2x + 13 + 20 = 71

2x = 71 - 20 - 13

x = 38 / 2

x = 19

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2 years ago

What is 3/4 plus 4 1/2

pochemuha

Answer:

21/4

Step-by-step explanation:

4 1/2 is 9/2 is 18/4

18/4+3/4=21/4

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3 years ago

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