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
34kurt
3 years ago
5

The object will hit the ground after 5 seconds. You can rewrite the quadratic function as a quadratic equation set equal to zero

to find the zeros of the function 0 = –16t2 + 80t + 0. You can factor or use the quadratic formula to get t = 0 and t = 5. Therefore, it is on the ground at t = 0 (time of launch) and then hits the ground at t = 5 seconds
Mathematics
1 answer:
mario62 [17]3 years ago
8 0

Answer:

289

Step-by-step explanation:

You might be interested in
Please help! I’ll mark brainlest :/
mafiozo [28]
B. is the answer if you look closely
6 0
3 years ago
What is the value of x?<br><br> Enter your answer in the box.<br><br> x =
qaws [65]

Answer:

Step-by-step explanation: its yo mama :)

7 0
2 years ago
on the highway Anita drove an average speed of 60.2 miles per hour at that speed about how far can she travel in three and a hal
Misha Larkins [42]
6. 64 hours so about 7 hours if you need to round up


hope this helps


please thank me
3 0
3 years ago
<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%20%7B%7D%5E%7B2%7D%20-%204%20%7D%7B%20%5Csqrt%7Bx%20%7B%7D%5E%7B2%7D%20-%206x%2
Nimfa-mama [501]

First of all, we can observe that

x^2-6x+9 = (x-3)^2

So the expression becomes

\dfrac{x^2-4}{\sqrt{(x-3)^2}} = \dfrac{x^2-4}{|x-3|}

This means that the expression is defined for every x\neq 3

Now, since the denominator is always positive (when it exists), the fraction can only be positive if the denominator is also positive: we must ask

x^2-4 \geq 0 \iff x\leq -2 \lor x\geq 2

Since we can't accept 3 as an answer, the actual solution set is

(-\infty,-2] \cup [2,3) \cup (3,\infty)

7 0
3 years ago
The tensile strength of a metal part is normally distributed with mean 40 pounds and standard deviation 5 pounds. If 50,000 part
nalin [4]

Answer:

a) how many would you expect to fail to meet a minimum specification limit of 35-pounds tensile strength?

7933 parts

b) How many would have a tensile strength in excess of 48 pounds?

2739.95 parts

Step-by-step explanation:

The formula for calculating a z-score is is z = (x-μ)/σ, where x is the raw score, μ is the population mean, and σ is the population standard deviation.

a) how many would you expect to fail to meet a minimum specification limit of 35-pounds tensile strength?

z = (x-μ)/σ

x = 35 μ = 40 , σ = 5

z = 35 - 40/5

= -5/-5

= -1

Determining the Probability value from Z-Table:

P(x<35) = 0.15866

Converting to percentage = 15.866%

We are asked how many will fail to meet this specification

We have 50,000 parts

Hence,

15.866% of 50,000 parts will fail to meet the specification

= 15.866% of 50,000

= 7933 parts

Therefore, 7933 parts will fail to meet the specifications.

b) How many would have a tensile strength in excess of 48 pounds?

z = (x-μ)/σ

x = 48 μ = 40 , σ = 5

z = 48 - 40/5

z = 8/5

z = 1.6

P-value from Z-Table:

P(x<48) = 0.9452

P(x>48) = 1 - P(x<48)

1 - 0.9452

= 0.054799

Converting to percentage

= 5.4799%

Therefore, 5.4799% will have an excess of (or will be greater than) 48 pounds

We are asked, how many would have a tensile strength in excess of 48 pounds?

This would be 5.4799% of 50,000 parts

= 5.4799% × 50,000

= 2739.95

Therefore, 2739.95 parts will have a tensile strength excess of 48 pounds

4 0
3 years ago
Other questions:
  • On a blueprint, a square with 20 meters per side was shown as a square with 12 centimeters per side. how long would a girder app
    6·1 answer
  • How many significant figures does 2,090 have? 1 2 3 4
    5·2 answers
  • It takes Destiny y 4 hours to file all the daily paperwork. It takes Susan 5 hours to file the same paperwork. If they work toge
    5·1 answer
  • The area of a given hexagon is equal to the area of an equilateral triangle whose perimeter is 36 inches. Find the length of a s
    12·2 answers
  • One fifth of the people living in a town are 6'0" or taller than 6'0", and one sixth of the people living in the same town are 5
    5·1 answer
  • The table represents a function
    13·1 answer
  • Log 2x=-1<br> solve for x
    7·1 answer
  • In​ basketball, some baskets are worth two points. Others are worth three points. In one​ game, the ratio of​ three-point basket
    12·1 answer
  • I need help please..​
    14·1 answer
  • There is a 40% probability that a student PASSES their first statistics exam. Using a Binomial Distribution, if we randomly sele
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!