1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Reptile [31]
2 years ago
10

If 4/9 of the 63 fishes in the tank were guppies. How many of the fish were not guppies

Mathematics
1 answer:
ArbitrLikvidat [17]2 years ago
8 0
35 were not guppies.

Explanation:
63/9=7
7*4=28
63-28=35
You might be interested in
Because of variability in the manufacturing process, the actual yielding point of a sample of mild steel subjected to increasing
Alex73 [517]

Answer:

modify tge production

Step-by-step explanation:

7 0
3 years ago
We are throwing darts on a disk-shaped board of radius 5. We assume that the proposition of the dart is a uniformly chosen point
Vlad1618 [11]

Answer:

the probability that we hit the bullseye at least 100 times is 0.0113

Step-by-step explanation:

Given the data in the question;

Binomial distribution

We find the probability of hitting the dart on the disk

⇒ Area of small disk / Area of bigger disk

⇒ πR₁² / πR₂²

given that; disk-shaped board of radius R² = 5, disk-shaped bullseye with radius R₁ = 1

so we substitute

⇒ π(1)² / π(5)² = π/π25 = 1/25 = 0.04

Since we have to hit the disk 2000 times, we represent the number of times the smaller disk ( BULLSEYE ) will be hit by X.

so

X ~ Bin( 2000, 0.04 )

n = 2000

p = 0.04

np = 2000 × 0.04 = 80

Using central limit theorem;

X ~ N( np, np( 1 - p ) )

we substitute

X ~ N( 80, 80( 1 - 0.04 ) )

X ~ N( 80, 80( 0.96 ) )

X ~ N( 80, 76.8 )

So, the probability that we hit the bullseye at least 100 times, P( X ≥ 100 ) will be;

we covert to standard normal variable

⇒ P( X ≥  \frac{100-80}{\sqrt{76.8} } )

⇒ P( X ≥ 2.28217 )

From standard normal distribution table

P( X ≥ 2.28217 ) = 0.0113

Therefore, the probability that we hit the bullseye at least 100 times is 0.0113

3 0
3 years ago
Please help ASAP and help me find what the value of x is
elixir [45]

Answer:

x=44

Step-by-step explanation:

33+103+x=180

136+x=180

x=44

6 0
3 years ago
Read 2 more answers
A box contains 12 balls of which 5 are red, and 7 are blue. If 4 balls are drawn from the box, in how many ways can this be done
mash [69]

Answer:

175 ways

Step-by-step explanation:

5 balls are red, and 7 balls  are blue making a total of 12 balls.

4 balls are drawn from the box,

1 ball is red and 3  balls are blue out of the 4 drawn from the box.

We have to choose 1 ball from 5 red balls and 3 blue balls from 7 blue balls.

Since the order is not essential we use combinations to find out

5C1 * 7C3= 5*35 = 175 ways

6 0
3 years ago
David ate 80 blueberries in one hour. How many did he eat in fifteen minutes?
Firlakuza [10]

All we have to do is divide how many blueberries he ate in an hour (80) by how many times 15 minutes is in 1 hour (4)

80 ÷ 4 = 20

We can check our work by multiplying 20 by 4

20 x 4 = 80

Therefore, David ate 20 blueberries in 15 minutes


Hope this helps you!

Always remember you are a Work Of Art!

- Nicole :) <3

8 0
3 years ago
Read 2 more answers
Other questions:
  • Can someone help me with this please
    13·2 answers
  • If cba represents three numbers multiplied together, what property allows you to rearrange the factors to read abc?
    13·1 answer
  • Plz answers ASAP. Ignore the graph on the bottom corner
    6·1 answer
  • Max has a monthly salary of $1,100 and also earns 7.5% commission on his sales. If Max had $43,000 in sales last month, what wer
    6·2 answers
  • A recent survey asked UF students if they had a job or not, and if they were underclassmen (Freshmen and Sophomores) or uppercla
    8·1 answer
  • Terry has a credit card that uses the average daily balance method. For the first 18 days of one of his billing cycles, his bala
    11·1 answer
  • Will give brainliest if correct.
    15·1 answer
  • Savannah is buying a $1,200.00 Iphone 12 on an installment plan. She makes a down payment of $200.00. She makes monthly payments
    10·1 answer
  • SOMEONE PLZ GELP WITH NUMBER ONE.
    7·1 answer
  • Round and/or estimate then add (nearest hundred)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!