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andrey2020 [161]

3 years ago

10

If you pick a marble out of 6 red and 10 black, record its color, and return it to the bag 200 times, how many times can you exp

ect to pick a black marble?

1 answer:

MariettaO [177]3 years ago

4 0

10 out of 200 because there is 10 marbles and 200 times you reach and grab one it would be a 10 out of 200 chance

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What is the equation of the line passing through ( -5, -3 ) and perpendicular

Artist 52 [7]

Answer:

y = 7/5x + 4

Step-by-step explanation:

use the slope from the equation -5/7 and take the negative reciprocal to get the perpendicular slope = 7/5. Then use the equation y=mx+b. Plug in x and y from the point given and the new slope and solve for b.

(-3) = (7/5)(-5) + b, (-3) = -7 + b, add 7 to both sides. b = 4. Rewrite the equation now to be y = 7/5x + 4

4 0

3 years ago

You purchased a rare painting for $150 that is increasing in value by 3% annually. How many years will it take until it is doubl

Ahat [919]

Answer:

23 years.

Step-by-step explanation:

It is given that the initial price of painting is $150 and its values increasing by 3% annually.

We need to find how many years will it take until it is doubled in value.

The value of painting after t years is given by

$y=150(1+0.03)^t$

$y=150(1.03)^t$

The value of painting after double is 300. Substitute y=300.

$300=150(1.03)^t$

Divide both sides by 150.

$2=(1.03)^t$

Taking log both sides.

$\log 2=\log (1.03)^t$

$\log 2=t\log (1.03)$

$t=\dfrac{\log 2}{\log (1.03)}$

$t=23.44977$

$t\approx 23$

Therefore, the required number of years is 23.

6 0

3 years ago

What does 5/12+23/10=

Serhud [2]

Answer:

PEMDAS

(5/12) +(23/10)

5/12=0.42

23/10=2.3

0.42+2.3=2.72

2.72 is the correct answer

4 0

3 years ago

Mt. McKinley, in Alaska, is the highest mountain in North America at 20,320

gladu [14]

Answer:

12700 feet

Step-by-step explanation:

Do 5/8 of 20,320

Do 20320 divided by 8 which is 2540

Do 2540 times 5 which is 12700

6 0

3 years ago

Somebody please help me fast

nydimaria [60]

Use the equation

-2 - 5 = -7
0 - -3 = 3

-4 - 1 = -5
0 - 5 = - 5

this is all i am going to tell you

think you can figure the rest out on your own

Hope i helped mate!

8 0

3 years ago