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LenKa [72]
3 years ago
12

Karen wants to distract her noisy four-year-old child at a restaurant. She pulls out a bag that has 4 black marbles, 8 red marbl

es, and 9 green marbles. The child likes green marbles. What is the probability Karen will randomly pick a green marble from the bag in one try?
Mathematics
1 answer:
kicyunya [14]3 years ago
6 0
With 21 marbles in the bag, and 9 of them green, her chances are 9/21 that she will pull a green marble.  If you reduce 9/21 you get 3/7 which is the way the answer should be expressed (in lowest terms)

Answer Probability of green = 3/7
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At a motorbike store, 20% of the motorbikes are Honda products and 1/9 of them are Vespa’s. If the store had exactly 270 motorbi
scoray [572]

Answer:

84.

Step-by-step explanation:

We have been given that at a motorbike store, 20% of the motorbikes are Honda products and 1/9 of them are Vespa's. The store had exactly 270 motorbikes.

Let us find 20% 270 to find number of Honda bikes.

\text{Honda bikes}=270\times \frac{20}{100}

\text{Honda bikes}=270\times \frac{1}{5}

\text{Honda bikes}=54

Therefore, there are 54 Honda bikes at the store.

Let us find 1/9 of 270 to find number of Vespa bikes.

\text{Vespa bikes}=270\times \frac{1}{9}

\text{Vespa bikes}=30

Therefore, there are 30 Vespa bikes at the store.

The number of either Honda or Vespa bikes would be sum of both type bikes.

\text{Number of either Honda or Vespa bikes}=54+30

\text{Number of either Honda or Vespa bikes}=84

Therefore, 84 of the total bikes are either Honda or Vespa made.

5 0
4 years ago
The equation sin(25o) = 9/C can be used to find the length of line ab . What is the length of line ab?
Sauron [17]
Sin Ф=opposite/ hypotenuse
In this case:
sin 25º=9 in /c
c=9 in/ sin 25º
c≈21.3 in.

Answer: sin (25º), in this case can be used to find the lenght of the hypotenuse, and the length of this hypotenuse would be 21.3 in.

5 0
3 years ago
Read 2 more answers
Find the inverse of h(x) = + .
DiKsa [7]

Answer:

that isnt an equation silly goose!

Step-by-step explanation:

4 0
3 years ago
Marissa and Callie both have babysitting jobs. Marissa charges $19 plus $1.50 per hour. Callie charges $15 plus $2.75 per hour.
aliya0001 [1]

Answer:

4 hours

Step-by-step explanation:

Write an equation

19 +1.5x < 15+2.75x

Subtarct 15 on both sides

4+1.5x<2.75x

subtract 1.5x on both sides

4< 1.25x

Divide 1.25 on each side

3.2<X

Since they on,y charge per hour so 4 hours

3 0
4 years ago
Read 2 more answers
Jackie deposited $315 into a bank account that earned 1.5% simple interest each year. If no money was deposited into or withdraw
Mekhanik [1.2K]
The formula for simple interest is i = p*r*t, where p is the principal, r is the interest rate as a decimal fraction, and t is the time in years.

Here,   i = ($315) (0.015) (3) = $14.18  (answer)

4 0
3 years ago
Read 2 more answers
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