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3 years ago

7

maria draws one marble from a bag containing 5 red, 3 green, and 4 yellow. the probability she draws a yellow marble is____

1 answer:

SIZIF [17.4K]3 years ago

5 0

Answer:

33% or 4/12

Step-by-step explanation:

There are 5 red, 3 green, and 4 yellow, so make it into a fraction. In total there are 12 marbles(5+3+4). There are 4 yellow marbles, so the fraction would be 4/12. Turn this into a percent to get the probability. 4/12 = 0.33 = 33%

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You bike 1 mile the first day of your training, 1.3 miles the second day, 1.9 miles the third day, and 3.1 miles the fourth d

JulsSmile [24]

Answer:

19.9 miles

Step-by-step explanation:

In this problem we have:

$d_1=1 mi$ is the distance travelled during the 1st day

$d_2=1.3 mi$ is the distance travelled during the 2nd day

$d_3=1.9 mi$ is the distance travelled during the 3rd day

$d_4=3.1 mi$ is the distance travelled during the 4th day

We notice that the difference between the distance travelled on the (n+1)-th day and the distance travelled on the n-th day doubles every day. In fact:

$d_2-d_1=0.3\\d_3-d_2=2\cdot 0.3 = 0.6\\d_4-d_3=2\cdot 0.6 = 1.2$

Which can be rewritten using the general formula:

$d_{n+1}-d_n=2(d_n-d_{n-1})$

This means that

$d_{n+1}=d_n+2(d_n-d_{n-1})$

By applying this formula recursively, we can find the 7th term, which is the distance travelled on the 7th day:

$d_1=1\\d_2=1.3\\d_3=1.9\\d_4=3.1\\d_5=3.1+2\cdot 1.2=5.5\\d_6=5.5+2\cdot 2.4=10.3\\d_7=10.3+2\cdot 4.8=19.9 mi$

So, the distance travelled on the 7th day is 19.9 miles.

7 0

3 years ago

What id the greatest common factor shared by 24 and 54

Marysya12 [62]

Answer:

6.

Step-by-step explanation:

3 0

3 years ago

Four families went out for lunch. The total food

dybincka [34]

Answer:

Each family spent about 34.25 on dinner

Step-by-step explanation:

$167 - $30 (tip) = 137

137 ÷ 4 (for each family) = 34.25

BUT

if each family is seperate than they each spent about 11.75 on dinner

167 - (30 x 4) = 47

47 ÷ 4 = 11.75

I'm pretty sure the first one is the answer though

7 0

3 years ago

Read 2 more answers

Find the interest on $5,200 at 6% for 2 and a half years. Which of the following equations would be used to solve this problem?

IgorLugansk [536]

Answer:

$5,843 or $642

Step-by-step explanation:

At the end of 2 years, your savings will have grown to $5,842.

You will have earned in $642 in interest.

7 0

3 years ago

Read 2 more answers

What is the value of the expression 8^−2 ?

muminat

_Brainliest if helped!

1 over 64

8^2 = 64 , 8^-2 = 1/(8^2) = 1/64

7 0

3 years ago