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Lelu [443]
2 years ago
15

A game spinner has 8 sections, 3 red, 1 blue, 2 yellow, and 2 green. What is the probability of not spinning a green?

Mathematics
1 answer:
jekas [21]2 years ago
4 0

Answer:

3/4

Step-by-step explanation:

green takes up 1/4 so the rest that arnt green is the answer

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A person invest $1200 in an account that earns 2% interest compound quarterly. Find when the value of the investment reaches $15
Basile [38]

Answer:

After 11 years the value of the investment reaches $1500.00

.

Step-by-step explanation:

The formula used for finding time (when the value reaches certain amount) is:

A= P(1+\frac{r}{n})^{nt}

where A= Future VAlue

P= Principal Value

r= rate of interest (in decimal)

n= no of times investment is compounded

t= time

Putting the values given and finding Time t,

A= $1500

P= $1200

r= 2% or 0.02

n= 4 (compound quarterly)

A= P(1+\frac{r}{n})^{nt}

1500= 1200(1+\frac{0.02}{4})^{4t}

Dividing both sides by 1200 and solving 0.02/4 = 0.005

1.25= (1+0.005)^{4t}

1.25= (1.005)^{4t}

Since t is in power we take the logarithm ln on both sides.

The rule of logarithm says that the exponent can be multiplied with the base when taking log

\ln1.25=ln( 1.005)^{4t}\\\ln1.25=4t * ln( 1.005)\\0.22 = 4t * 0.005\\Solving\,\,\\\frac{0.22}{4*0.005} = t\\=> t= 11\, years

8 0
3 years ago
Would someone please help me with this
Ipatiy [6.2K]

Answer:

12,000 m³

Step-by-step explanation:

  • Area of it's base = 900 m²
  • Height of the pyramid = 40 m

The volume of a pyramid = 1/3 × area of base × height

= 1/3 × 900 × 40

= 300 × 40

= 12,000 m³

4 0
2 years ago
I need to write an expression to represent the volume of this shape
Alina [70]

Answer:

v = 3.14x²y

Step-by-step explanation:

volume cylinder = πr²h

r = 2x ÷ 2 = x

h = y

3 0
2 years ago
Read 2 more answers
SOMEONE HELP ASAP PLEASE. Answers and links that have nothing to do with the question will be reported.
Serhud [2]

Answer:

\frac{1}{15}

Step-by-step explanation:

There are 2 yellow marbles, 3 pink marbles, and 5 blue marbles in the bag, for a total of 10 marbles.

Let's start with the probability that the first marble drawn is pink. Since there are 3 pink marbles out of the 10 total marbles, the probability of this happening is 3/10.

Since the first marble is not put back in the bag, there are now 9 marbles left, 2 of then being pink. The chances of drawing a pink marble now is 2/9. To find the chances of both of these events happening, multiply them together to get:

\frac{3}{10}\cdot \frac{2}{9}=\frac{6}{90}=\boxed{\frac{1}{15}}

5 0
3 years ago
You work at a carnival for 3.5 hours. You can earn $36.75 . How much do you earn per hour.
timurjin [86]
$10.50 an hour. all you need to do is take 36.75 divided by 3.5
4 0
3 years ago
Read 2 more answers
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