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
kirill [66]
3 years ago
14

Seventy weather balloons were sent up. Twenty-eight were found. What percent wer ound? 17​

Mathematics
1 answer:
In-s [12.5K]3 years ago
5 0

Step-by-step explanation:

let the percent of found balloons be x

given,

total number of balloons= 70

number of found balloons= 28

according to the question,

x% of 70= 28

x/100 × 70 = 28

x=40

hence 40% of the balloons were found

You might be interested in
lara has 90 mild peppers and 36 hot peppers. she is putting them into baskets so that each basket has the same number of mild pe
Mariulka [41]

Answer:

Up to 36

Step-by-step explanation:

If she puts one pepper hot pepper in every basket she can make a total of 36 baskets

8 0
3 years ago
A student answers a multiple-choice examination question that offers four possible answers. Suppose the probability that the stu
Nitella [24]

Answer: 0.9730

Step-by-step explanation:

Let A be the event of the answer being correct and B be the event of the knew the answer.

Given: P(A)=0.9

P(A^c)=0.1

P(B|A^{C})=0.25

If it is given that the answer is correct , then the probability that he guess the answer P(B|A)= 1

By Bayes theorem , we have

P(A|B)=\dfrac{P(B|A)P(A)}{P(B|A)P(A)+P(C|A^c)P(A^c)}

=\dfrac{(1)(0.9)}{(1))(0.9)+(0.25)(0.1)}\\\\=0.972972972973\approx0.9730

Hence, the student correctly answers a question, the probability that the student really knew the correct answer is 0.9730.

7 0
3 years ago
Help me solve this problem please
ad-work [718]
I think you count the squares in the middle or radius ?
3 0
3 years ago
Read 2 more answers
Jim earns a regular hourly rate of $5 and a premium hourly rate of $6 He worked 45 Hours last week what is his gross pay
denpristay [2]
(40*5)+(5*6)=200+30 = 230

answer: $230
6 0
3 years ago
Read 2 more answers
Homework Jim Thompson! PART 2
BlackZzzverrR [31]

Problem 2

Part (a)

The 3D shape formed when rotating around the y axis forms a pencil tip

The shape formed when rotating around the x axis is a truncated cone turned on its side.

------------

Part (b)

Check out the two diagrams below.

============================================================

Problem 3

Answer: Choice A and Choice C

-----------------------

Explanation:

Think of stacks of coins. Let's say we had 2 stacks of 10 quarters each. The quarters are identical, so they must produce identical volumes. Those sub-volumes then add up to the same volume for each stack. Now imagine one stack is perfectly aligned and the other stack is a bit crooked. Has the volume changed for the crooked stack? No, it hasn't. We're still dealing with the same amount of coins and they yield the same volume.

For more information, check out Cavalieri's Principle.

With all that in mind, this leads us to choice C. If the bases are the same, and so are the heights, then we must be dealing with the same volumes.

On the other hand, if one base is wider (while the heights are still equal) then the wider based block is going to have more volume. This leads us to choice A.

6 0
2 years ago
Other questions:
  • Need Help Please!!!!!!!
    12·2 answers
  • Urgent
    11·1 answer
  • What is the value of the 19th term in the sequence -1, -5, -9, ...?<br> -77<br> -73<br> -71<br> -22
    9·1 answer
  • The dot plots below show rainfall totals in the Highlands and Lowlands areas of a certain region.
    15·2 answers
  • Help please picture down below&lt;3
    13·1 answer
  • the perimeter of square is 36 inches which statement is true when the square is dilated by a scale factor of 2/3
    9·1 answer
  • The polygons are similar. Find the value of y
    5·1 answer
  • Samantha's parents are going to paint her room. Her color choices for the
    15·1 answer
  • If an interest rate of 5% results in interest of $50,<br> what is the principal amount of the loan?
    12·2 answers
  • Simplify each expression 2x-5y. If x=2/3 and y=1/4
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!