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2 years ago

There is a bag filled with 4 blue and 5 red marbles.

Mathematics

1 answer:

kkurt [141]2 years ago

6 0

Answer:

Step-by-step explanation:

There are 4 blue, 5 red and total of 9 marbles.

If two marbles are taken and we are looking for exactly one red, then it is:

red, then blue or blue, then red

Find the probability of each case:

P(r, b) = 5/9*4/8 = 5/18
P(b, r) = 4/9*5/8 = 5/18

Probability of exactly one red:

P = 5/18*2 = 5/9

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If h (x) = -5x-7 then what is h (x-1) ?

goldenfox [79]

Answer:

h(x - 1) = -5x - 2

General Formulas and Concepts:

Pre-Algebra

Distributive Property

Algebra I

Terms/Coefficients

Functions

Function Notation

Step-by-step explanation:

Step 1: Define

Identify

h(x) = -5x - 7

Step 2: Find

Substitute in x [Function h(x)]: h(x - 1) = -5(x - 1) - 7
[Distributive Property] Distribute -5: h(x - 1) = -5x + 5 - 7
Combine like terms: h(x - 1) = -5x - 2

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2 years ago

How can u use number patterns to find the least common multiple of 120 and 360

Natasha2012 [34]

A number pattern would be something that just gets repeated over and over
so for this example 120+120+120=360

so the least common multiple is 120 because adding 120, three times will get you to 360

4 0

2 years ago

A3-inch candle burns down in 5 hours. How far has it burned after 8

pentagon [3]

Answer:Assuming a 3-inch diameter, pillar candles of 3, 4 and 6 inches in height will burn for 45, 60 and 75 hours, respectively. Three-inch Party Lite pillar candles will burn 30-35 hours; 5-inch, 65 to 70 hours; and 7-inch, 90 to 95 hours. The three-wick 6-by-5-inch candles burn for more than 100 hours.

Step-by-step explanation:

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2 years ago

Math help again please

vovangra [49]

Hey there! :D

First, find the slope.

m= (y2-y1)/(x2-x1) I'm using points (0,3) and (1,5)

m=(5-3)/(1-0)
m= 2/1
m=2

Now, plug that into point slope. Use point (1,5) m=2

y-y1= m(x-x1)

y-5= 2(x-1)

Distribute.

y-5=2x-2

Add 5 to both sides.

y=2x+3 == equation of the line in slope intercept form. y=mx+b

I hope this helps!
~kaikers

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3 years ago

Help!!!!!!need the answer now! find the distance between 4+3i and 6-2i

Colt1911 [192]

Answer:

2(plus or minus) 1i

Step-by-step explanation:

First find the distance between the number that is being multiplied by the variable. Then, find the distance in absolute value between the numbers that have been added or subtracted.

3i - 2i = 1i

I 4 + -6 I

4 0

3 years ago