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
nasty-shy [4]
3 years ago
9

I Will Give You A Brainliest! guarantee

Mathematics
1 answer:
Usimov [2.4K]3 years ago
7 0

Answer:

lololol

Step-by-step explanation:

You might be interested in
The equation $y=-4.9t^2+3.5t+5$ describes the height (in meters) of a ball thrown upward at $3.5$ meters per second from $5$ met
Georgia [21]

Answer:

Step-by-step explanation:

The position function is

s(t)=-4.9t^2+3.5t+5 and if we are looking for the time t it takes for the ball to hit the ground, we are looking for the height of the ball when it is on the ground. Of course the height of anything on the ground is 0, so if we set s(t) = 0 and solve for t, we will find our answer.

0=-4.9t^2+3.5t+5 and factor that however you are currently factoring in class to get that

t = -.71428 seconds or

t = 1.42857 seconds (neither one of those is rational so they can't be expressed as fractions).

We all know that time will never be a negative value, so the time it takes this ball to hit the ground is

1.42857 seconds (round how you need to).

4 0
3 years ago
Which expression is modeled by this arrangement of tiles? 40 positive tiles are broken up into 10 groups of 4 positive tiles. 40
Lisa [10]

Answer:

\frac{40}{4}

Step-by-step explanation:

The model shows that there are 40 tiles which were divided into 4 per group. This results into 10 groups. That is:

\frac{40 tiles}{4} = 10 groups

Therefore, the expression modeled by the arrangement of the tiles is \frac{40}{4}

6 0
3 years ago
Read 2 more answers
Question 7 Unsaved A couch cost $825. If the state has a 10% sale's tax. What was the price of the couch before taxes?
jeyben [28]
Let the price be p.  Then 1.10p = $8.25.  Solving for p, p = $750 (answer)
4 0
3 years ago
Read 2 more answers
Determine the slope from the following order pairs:<br> (0,3) (3,-1)
liq [111]
Use slope formula
y^2-y^1/x^2-x^1

the answer is -4/3
3 0
3 years ago
"You are dating Moon rocks based on their proportions of uranium-238 (half-life of about 4.5 billion years) and its ultimate dec
Olenka [21]

Step-by-step explanation:

a.

Initial mass of the isotope = x

Time taken by the sample to decay its mass by 41% = t

Formula used :

N=N_o\times e^{-\lambda t}\\\\\lambda =\frac{0.693}{t_{\frac{1}{2}}}

where,

N_o = initial mass of isotope  = x

N = mass of the parent isotope left after the time, (t)  = 59% of x = 0.59x

t_{\frac{1}{2}} = half life of the isotope  = 4.5 billion years

\lambda = rate constant

Now put all the given values in this formula, we get

0.59x=x\times e^{-(\frac{0.693}{\text{4.5 billion years}})\times t}

t = 3.4 billion years

The age a rock is 3.4 billion years.

b.

Initial mass of the isotope = x

Time taken by the sample to decay its mass by 35%= t

Formula used :

N=N_o\times e^{-\lambda t}\\\\\lambda =\frac{0.693}{t_{\frac{1}{2}}}

where,

N_o = initial mass of isotope  = x

N = mass of the parent isotope left after the time, (t)  = 65% of x = 0.65x

t_{\frac{1}{2}} = half life of the isotope  = 4.5 billion years

\lambda = rate constant

Now put all the given values in this formula, we get

0.65x=x\times e^{-(\frac{0.693}{\text{4.5 billion years}})\times t}

t = 2.8 billion years

The age a rock is 2.8 billion years.

5 0
3 years ago
Other questions:
  • Can -62 be classified as a natural number
    12·1 answer
  • Need help :) i’m bad at math lol
    15·1 answer
  • Is a^2+3b-2a^2 = 3a^2+3b-4a^2
    11·1 answer
  • a cone-shaped storage tank has a height of 9feet and radius of 7feet. determine the volume of liquid the tank can hold.
    11·1 answer
  • a college employs 15 stewards. what is the average monthly wage of the stewards if the college pays 226.20 naira in wages each m
    6·1 answer
  • What is 498,235 rounded to the<br> nearest thousands?
    11·1 answer
  • reeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
    6·1 answer
  • Calculator display for<br> 1/9
    14·2 answers
  • Solve using elimination.
    7·1 answer
  • MATH which graph has an axis of symmetry at x=-1
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!