MATHEMATICS MIDDLE SCHOOL

Chen has an MP3 player called the Jumble. The Jumble randomly selects a song for the user to listen to. Chen's Jumble has 4 classical songs, 3 rock songs, and 2 rap songs on it. Chen is going to listen to 360 songs. What is the best prediction for the number of times Chen will listen to a classical song? Choose 1 answer: (Choice A) Exactly 90 times (Choice B) Close to 90 times but probably not exactly 90 times (Choice C) Exactly 160 times (Choice D) Close to 160 times but probably not exactly 160 timesPLEASE GIVE EXPLANATION!!!

Answers

Answer 1
Answer:

Answer:

Number of songs=360

p(classical songs)=4/9

best prediction=360*4/9=160

so they answer is 160.

Step-by-step explanation:
Answer 2
Answer:

Answer:

Close to 160 times but probably not exactly 160 times.

Step-by-step explanation:

Khan Academy

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The temperature in Bloomington on Sunday was 32.6°C. On Monday, the temperature changed by -8.25°C. What was the temperature on Monday?

Answers

24.35 C
just subtract 32.6 - 8.25

Answer:

24.35 C

Step-by-step explanation:

Stuart is buying a pair of jeans that regularly cost $40. They are on sale for 20% off. If the tax rate is 8%, what is the sale price of the jeans including tax?a. $21.60
b. $34.56
c. $42.34
d. $44.16

Answers

well first you want to add the sales tax which would be 8% of 40 which is 3.2. So it costs $43.2 without the discount. so then you want to find 20% of 43.2 which is 8.64. So the last step is to subtract 8.64 from 43.2 which is

43.2 - 8.64 = $34.56 is your answer

please mark brainliest if this helped
40$ x .20 or 20% = 8
40$ + 8 = 32$
32$ x .08 or 8% = 2.56 the tax rate
32$ + 2.56 = 34.56$ Price of jeans including tax.
B, is the answer

How does using an inverse operation help you solve an equation?
*Please help*

Answers

An inverse set of operations is a pair of operations that do the opposite of each other, such as multiplication and division. When solving an algebraic equation, you can use inverse functions to isolate the variable you are trying to find.
For example:
5x=25
The expression 5x was arrived at by multiplying 5 times x. To reverse that multiplication, you would divide 5x by 5 and get x. However, since this is an equation, you would need to divide both sides of the equation by 5, or else it wouldn't still be equal. The result of dividing both sides is x=5.
As you can see, by taking the inverse operation, you were able to isolate your variable (x) on one side of the equation and therefore solve for its value.
it helps you check the equation to see if you did it right hopefully i helped :}

a poster of your favorite band has a width of 15 inches you have a space on your wall that has a width of 1.2 feet will the poster fit explain

Answers

No, it won't fit

15 inches = 1.25 ft

so it is to big

-2(10r + 4) + 10(7r + 2)

Answers

Answer:

\large\boxed{-2(10r+4)+10(7r+2)=50r+12}

Step-by-step explanation:

-2(10r+4)+10(7r+2)\qquad\text{use the distributive property}\ a(b+c)=ab+ac\n\n=(-2)(10r)+(-2)(4)+(10)(7r)+(10)(2)\n\n=-20r-8+70r+20\qquad\text{combine like terms}\n\n=(-20r+70r)+(-8+20)\n\n=50r+12
The answer would be 50r+12

-2(10r+4)+10(7r+2)

Remove parentheses

-20r-8+70r+20

Collect like terms

50r+12

What is the value of 3^0x3^4=? without any exponents.

Answers

Answer:

81

Step-by-step explanation:

(30)(34)

=1(34)

=(1)(81)

=81
the value of 3^0x3^4 without any exponents is 243
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