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
erik [133]
3 years ago
11

Any one that knows this please help thanks!

Mathematics
1 answer:
Blababa [14]3 years ago
7 0
The answer is 6/7 or, in decimal form, 0.857143
You might be interested in
The question is; One kindergartner will be chosen at random to accept a prize. What is the probability that the student is a gir
Flauer [41]
Im pretty sure the answer is A
5 0
2 years ago
Find the roots of h(t) = (139kt)^2 − 69t + 80
Sonbull [250]

Answer:

The positive value of k will result in exactly one real root is approximately 0.028.

Step-by-step explanation:

Let h(t) = 19321\cdot k^{2}\cdot t^{2}-69\cdot t +80, roots are those values of t so that h(t) = 0. That is:

19321\cdot k^{2}\cdot t^{2}-69\cdot t + 80=0 (1)

Roots are determined analytically by the Quadratic Formula:

t = \frac{69\pm \sqrt{4761-6182720\cdot k^{2} }}{38642}

t = \frac{69}{38642} \pm \sqrt{\frac{4761}{1493204164}-\frac{80\cdot k^{2}}{19321}  }

The smaller root is t = \frac{69}{38642} - \sqrt{\frac{4761}{1493204164}-\frac{80\cdot k^{2}}{19321}  }, and the larger root is t = \frac{69}{38642} + \sqrt{\frac{4761}{1493204164}-\frac{80\cdot k^{2}}{19321}  }.

h(t) = 19321\cdot k^{2}\cdot t^{2}-69\cdot t +80 has one real root when \frac{4761}{1493204164}-\frac{80\cdot k^{2}}{19321} = 0. Then, we solve the discriminant for k:

\frac{80\cdot k^{2}}{19321} = \frac{4761}{1493204164}

k \approx \pm 0.028

The positive value of k will result in exactly one real root is approximately 0.028.

7 0
2 years ago
Sarah stands at the corner of a rectangular field. If the field measures 180 m by 210 m, how far would Sarah need to walk to
Agata [3.3K]

Answer:

30√85 or 276.5863 meters

Step-by-step explanation:

Use pythag theorom. a^2+b^2=c^2

180^2+210^2=c^2

c=276.5863

4 0
2 years ago
12 chocolate bars for $22 or 20 chocolate bars for $33 use unit rate to determine the better buy.
jekas [21]
12c=22
6c=11
c=1 5/6
20c=33
c= 1 13/20
5/6 is about .83
13/20 is .65
12 chocolate bars for $22 is about $1.83 each
20 chocolate bars for $33 is $1.65 each

The 20 chocolate bars for $33 dollars has a better unit rate and is a better buy.
6 0
2 years ago
PLSS HELPPP!!! IN ORDER TO RECIEVE A BRAINLY, ANSWER QUICKLY AND CORRECTLY, AND MOST OF ALL, GIVE AN EXPLANATION!!! TYSM IN ADVA
Natalija [7]

Answer:

A. {−3.5, −2, 1, 2.5}

Step-by-step explanation:

Remember that the range is the possible values for Y in any given function, so in this case, we are given the Y values and we have to solve the function for x:

y=9+6x

6x=y-9

So we just insert the values, the first one being -12.

So since from the options only A has -3.5 as an option that's the correct answer.

hoped this helped! <3

7 0
3 years ago
Read 2 more answers
Other questions:
  • Which ordered pair cannot be a solution of h(t)=-16^2+80t if h is the height of a ball above ground after t seconds?
    5·1 answer
  • If a country’s dept to gdp ratio is 142% the country is borrowing more than it is producing.
    10·2 answers
  • The quadratic x^2-6x+66 can be written in the form (x+b)^2+c, where b and c are constants. What is b+c?
    6·1 answer
  • 4,400 is 10 times as much as 440
    13·1 answer
  • Which is the constant term of the algebraic expression -2x^2+17-15x+7xy?
    10·2 answers
  • What is the cube root of 512
    10·2 answers
  • What is the decimal equivalent of 60/300 ?
    5·2 answers
  • Which of the following is equivalent to log 25 125?
    7·1 answer
  • How do you do pemdas? Please help, I'm trying to teach my little brother and I forget
    7·2 answers
  • Halp u-u
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!