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olya-2409 [2.1K]
3 years ago
7

If a card is drawn at random from a​ well-shuffled deck, is getting a diamonda diamond independent of the card colorcard color l

eft parenthesis red or black right parenthesis question mark (red or black)? explain.
Mathematics
1 answer:
liraira [26]3 years ago
6 0
You should ask your parent/guardian
 or teacher if needed! Merry Christmas!
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Multiply and give the answer in scientific notation: (2.3 x 10-3)(3 x 108)
bulgar [2K]
<span>(2.3 x 10^-3)(3 x 10^8)
=(</span>2.3 x 3)(10^-3 x 10^8)
= 6.9 x 10^5

hope it helps
6 0
4 years ago
Read 2 more answers
Currently a product has a gear ratio of 17:5, driver:driven. If the company wants to change the product to have the same gear ra
Sedbober [7]

Answer:

10 teeth must go on the driven gear

Step-by-step explanation:

Let the number of teeth be x

In order for the new product to maintain the same ratio as the old the ratio must remain the same. This means that

17:5 = 34:x

\frac{17}{5} = \frac{34}{x}\\Now\ let\ us\ cross-multiply\\17 \times x = 5 \times 34\\17x = 170\\dividing\ both\ sides\ by\ 17 \\x = \frac{170}{17} \\x = 10

∴ 10 teeth must go on the driven gear

hence ratio = 34:10

8 0
3 years ago
A cosine function is a reflection of its parent function over the x-axis. The amplitude of the function is 11, the vertical shif
omeli [17]

We have been given that a cosine function is a reflection of its parent function over the x-axis. The amplitude of the function is 11, the vertical shift is 9 units down, and the period of the function is \frac{7\pi}{12}. The graph of the function does not show a phase shift. We are asked to write the equation of our function.

We know that general form a cosine function is y=A\cos(b(x-c))-d, where,

A = Amplitude,

\frac{2\pi}{b} = Period,

c = Horizontal shift,

d = Vertical shift.    

The equation of parent cosine function is y=\cos(x). Since function is reflected about x-axis, so our function will be y=-\cos(x).

Let us find the value of b.

\frac{2\pi}{b}=\frac{7\pi}{12}

7\pi\cdot b=24\pi

\frac{7\pi\cdot b}{7\pi}=\frac{24\pi}{7\pi}

b=\frac{24}{7}

Upon substituting our given values in general cosine function, we will get:

f(x)=-11\cos(\frac{24}{7}x)-9

Therefore, our required function would be f(x)=-11\cos(\frac{24}{7}x)-9.

7 0
3 years ago
Which of the following is the value of 3x’ – x+2 when x=-4
Aleks [24]

Answer:

-6

Step-by-step explanation:

3x-x+2

2x+2

2(-4)+2

-8+2

-6

Hope this helps!

#Team Rainbows~

6 0
3 years ago
I need help finding the value of X.
lina2011 [118]

Answer:

x=25

Step-by-step explanation:

43=2x-7 (since the midpoint separate a line into two equal halves)

43+7=2x

50/2=x

25=x

6 0
3 years ago
Read 2 more answers
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