3 years ago

Toss 2 coins probability of rolling 1 head

Mathematics

2 answers:

Pie3 years ago

8 0

1/4 is the probability of rolling two coins and getting 1 head

zhuklara [117]3 years ago

7 0

1/4=25% is the probability

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20) -5(1 - 5x) +5(-8x - 2) = -4x – 8x

Alchen [17]

Answer:

x = -5

Step-by-step explanation:

-5(1 - 5x) +5(-8x - 2) = -4x – 8x

First lets simplify each side of the equation.

-5+25x-40x-10 = -4x-8x

Combine like terms

-15x-15=-12x

Add 15x to both sides (addition property of equality)

-15=3x

Divide each side by 3 (division property of equality)

x=-5

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4 years ago

The lengths of the sides of a triangle are in the extended ratio 7 : 8 :9 . The perimeter of the triangle is 96 cm. What are t

PIT_PIT [208]

Answer:

28, 32, 36

Step-by-step explanation:

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3 years ago

A dealer paid $7,000 for a car at an auction. At the dealership, a salesperson sold the car for 30% more than the auction price.

timurjin [86]

30% of $7000 is $2100
25% of $2100 is $525

7 0

3 years ago

There is a cookie jar in Julio's kitchen filled with 7 cookies. His mother bakes some more cookies. Now there are 14 cookies. Ho

Aleonysh [2.5K]

The Answer is 7 cookies because she had 7 cookies filled in the jar and after making 7 more it becomes 14 so
Also 7+7=14

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3 years ago

Which of the following functions has a period of 8 π ?

KengaRu [80]

<h3>Answer: Choice B</h3>

Explanation:

The general template of a sine function is

y = Asin(B(x-C))+D

The value of B is the only thing that determines the period T. We ignore every other term.

It turns out that T = 2pi/B which can be solved to B = 2pi/T

Plug in the given period of T = 8pi and compute to get

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B = (2pi)/(8pi)

B = 2/8

B = 1/4

This means that the term out front of the x is 1/4 and the equation must be $y = \sin\left(\frac{1}{4}x\right)$ which matches with answer choice B.

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3 years ago