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3 years ago

PLZZZZZ HELPPPPP!!!!!!!!!!

Mathematics

1 answer:

Alja [10]3 years ago

8 0

Answer:

Step-by-step explanation:

150/360=5/12 so the sector is 5/12 the area of the whole circle which is 81π. 5/12(81π) =405/12 or 135/4. Answer A

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A probability experiment will consist of selecting one of two stacks of cards, and then choosing a card at random from the stack

postnew [5]

Answer:

The probability that the red card came from the first stack is:

40%

Step-by-step explanation:

a) Data and Calculations:

Stack Red Blue Total

First 6 5 11

Second 9 0 9

Total 15 5 20

The probability of selecting from the first stack = 50% since equal opportunity is given to the two sacks.

The probability of red card from the first stack = 6/15 = 0.4 = 40%.

b) The probability that the red card came from the first stack is given by the number of red cards in the first stack divided by the number or red cards in the two stacks. This is equal to 6/15 = 0.4 or 40%.

4 0

3 years ago

What value of s makes the equation true?

azamat

Answer:

-17 =s

Step-by-step explanation:

-8s +4 = -7s +21

Add 8s to each side

-8s+8s +4 = -7s+8s +21

4 = s+21

Subtract 21 from each side

4-21 = s+21-21

-17 =s

5 0

3 years ago

Read 2 more answers

Can anyone solve the system using the elimination method (TIMED) 3x-5y=7 2x-3y=6

steposvetlana [31]

Answer:

Hopefully help

Step-by-step explanation:

the answer in the picture

8 0

3 years ago

What is the slope of the line passing through the point (2,1) and the origin ?

liraira [26]

Answer:

$m=\frac{1}{2}$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Slope Formula: $m=\frac{y_2-y_1}{x_2-x_1}$

Step-by-step explanation:

Step 1: Define

Random Point (2, 1)

Origin (0, 0)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m.

Substitute [SF]: $m=\frac{0-1}{0-2}$
Subtract: $m=\frac{-1}{-2}$
Simplify: $m=\frac{1}{2}$

6 0

3 years ago

Find the length of the function over the given interval. y = 3x from x = 0 to x = 2

olganol [36]

The length of the function y = 3x over the given interval [0, 2] is 3.2 units

For given question,

We have been given a function y = 3x

We need to find the length of the function on the interval x = 0 to x = 2.

Let f(x) = 3x where f(x) = y

We have f'(x) = 3, so [f'(x)]² = 9.

Then the arc length is given by,

$\int\limits^a_b {\sqrt{1+[f'(x)]^2} } \, dx\\\\= \int\limits^2_0 {\sqrt{1+9} }\, dx\\\\=\sqrt{10}\\\\ =3.2$

This means, the arc length is 3.2 units.

Therefore, the length of the function y = 3x over the given interval [0, 2] is 3.2 units

Learn more about the arc length here:

brainly.com/question/10729208

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3 0

2 years ago