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2 years ago

Help me with this question please!! :)

Mathematics

1 answer:

Doss [256]2 years ago

3 0

Answer: 20/63

Step-by-step explanation:

The probability that the first marble is red is 16/28.
The probability that the second marble is red is 15/27.

Multiplying these probabilities, we get (16/28)(15/27) = 20/63

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All of the following types of graphs are used to represent numerical data except a _____.

tester [92]

I am unsure but i think the answer is c or a but let me know if i'm right or wrong

7 0

3 years ago

Read 2 more answers

1. The variable y varies inversely with x and y = 6 when x = 3.

Y_Kistochka [10]

Inverse variation means y=k/x, we are given (3,6) so

6=k/3

k=18 so

y=18/x

y=18/27

y=2/3

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3 years ago

For what value of the constant c is the function fcontinuous on (−[infinity], [infinity])?

Arlecino [84]

Answer:

For $c=\frac{1}{7}$ the function f(x) is continuous on $(-\infty,\infty)$ .

Step-by-step explanation:

We have the following function

$f(x) = \left\{ \begin{array}{ll} cx^2+5x & \quad x$

For the function f(x) to be continuous on $(-\infty,\infty)$ it is sufficient to have continuity at x = 6, we need to ensure that as x approaches 6, the left and right limits match, this means that

$\lim_{x \to 6^{-} } f(x)=\lim_{x \to 6^{+} } f(x)=f(x)$ ,

which holds if and only if

$c\left(6\right)^2+5\left(6\right)=\left(6\right)^2-c\left(6\right)\\36c+30=36-6c\\42c=6$

namely if $c=\frac{1}{7}$ .

6 0

3 years ago

The phases of the moon are periodic and repetitive. A new moon occurs when no moon is visible to an observer on

vfiekz [6]

Answer:

It's A

Step-by-step explanation:

Got it right on the practice :)

3 0

3 years ago

What percent of 480 is 160? A. 0.3% B. 3% C. 30% D. 33.3% E. 300%

Kaylis [27]

Answer: E

Explanation: If you are using a calculator, simply enter 480÷160×100 which will give you 300 as the answer.

4 0

3 years ago