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
Kryger [21]
3 years ago
8

What is 800 metres in centimetres

Mathematics
2 answers:
xxTIMURxx [149]3 years ago
7 0
There are 100 centimeters in on meter so multiply 800*100=80000. so you know that there are 80,000 cm in 800 meters.
KIM [24]3 years ago
3 0
Remember that
 1m=100cm
8m=800cm

800m=80,000cm




You might be interested in
In the past, the average age of employees of a large corporation has been 40 years. Recently, the company has been hiring older
earnstyle [38]

Answer:

Step-by-step explanation:

In the past, mean of age of employees

i.e. \mu = 40

Recently sample was taken

n = sample size = 60

Mean of sample = 45

Std dev of sample s = 16

H_0: \bar x = 40\\H_a: \bar x >40

(Right tailed test)

Since only population std deviation is known we can use t test only

Std error = \frac{s}{\sqrt{n} } \\=\frac{16}{\sqrt{61} } \\=2.049

Mean difference = 45-40 =5

Test statistic t=\frac{5}{2.049} \\=2.441

df = 60

p value =0.008739

Since p < 0.05 we reject null hypothesis

The mean age has increased.

5 0
3 years ago
2+2=4-1=3 2+4+4+5+6+1+8=
Vinvika [58]

Answer:

30

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
What do these (&gt;, ≥, &lt;, ≤) mean
AysviL [449]

Answer: <less than >greater than ≥ greater than or equal to ≤ less than or equal to

Step-by-step explanation:

7 0
3 years ago
True or false?
Nata [24]
True...

the longer the coffee sits the cooler it will be

false ,,  the length of time is independent

6 0
2 years ago
Help i dont understand how to complete this
Luda [366]

Answer: Josh = 19.8 hours, Danny = 10.8 hours

<u>Step-by-step explanation:</u>

Josh: \dfrac{1}{x+9}\\\\\\Danny: \dfrac{1}{x}\\\\\\Together: \dfrac{1}{7}\\\\\\Josh\quad + \quad Danny\quad =\quad Together\\\dfrac{1}{x+9}\quad +\qquad \dfrac{1}{x}\qquad = \qquad \dfrac{1}{7}\\\\\\\underline{\text{Clear the denominator by multiplying by the LCM: (x+9)(x)(7)}}\\\\7(x) + 7(x+9)=x(x+9)\\7x + 7x + 63 = x^2+9x\\14x+63=x^2+9x\\0=x^2-5x-63\\\\\\\underline{\text{Use the quadratic formula to solve for x: }}x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}

x=\dfrac{-(-5)\pm \sqrt{(-5)^2-4(1)(-63)}}{2(1)}\\\\\\.\quad =\dfrac{5\pm\sqrt{25+252}}{2}\\\\\\.\quad =\dfrac{5\pm\sqrt{277}}{2}\\\\\\.\quad =\dfrac{5\pm 16.6}{2}\\\\\\x =\dfrac{5+16.6}{2}\qquad x=\dfrac{5-16.6}{2}\\\\\\x=\dfrac{21.6}{2}\qquad \qquad x=\dfrac{-11.6}{2}\\\\\\x=10.8 \qquad \qquad x=-5.8

Since time cannot be negative, x=-5.8 is an extraneous solution (not valid) so x = 10.8

Josh: x + 9   -->   10.8 + 9   =   19.8

Danny: x     -->    10.8

****************************************************************************************

2a) k = 9.45 & 0.55

2b) x = 3/2

2c) x = 2/3     <em>(x = -1 is an extraneous solution so is not valid)</em>

2d) No Solution   <em>(x = 1 is an extraneous solution so is not valid)</em>

Here is the work for 2a.  Follow this format for b, c, & d

\dfrac{3}{k^2-8x+12}=\dfrac{k}{k-2}-\dfrac{4}{k-6}\\\\\text{Since the denominator cannot equal zero, then } k \neq2\ and\ k\neq6\\\text{If either of the solutions are 2 or 6, then that solution needs to be crossed out}\\\\\underline{\text{Clear the denominator by multiplying by the LCM: (k-2)(k-6)}}\\\\3 = k(k-6)-4(k-2)\\3=k^2-6k-4k+8\\0=k^2-10k+5\\\\\\\underline{\text{Use the quadratic formula to solve for k}}

x=\dfrac{-(-10)\pm \sqrt{(-10)^2-4(1)(5)}}{2(1)}\\\\\\.\quad =\dfrac{10\pm\sqrt{100-20}}{2}\\\\\\.\quad =\dfrac{10\pm\sqrt{80}}{2}\\\\\\.\quad =\dfrac{10\pm8.9}{2}\\\\\\x=\dfrac{10+8.9}{2}\qquad x=\dfrac{10-8.9}{2}\\\\\\x=\dfrac{18.9}{2}\qquad x=\dfrac{1.1}{2}\\\\\\x=9.45\qquad x=0.55\\\\\\\text{Both answers are valid!}

8 0
3 years ago
Other questions:
  • A farmer car pick 12 boxes of apples per day
    7·1 answer
  • Which is the equation of the line?
    11·1 answer
  • Malia uses 1/2 of a cup of vinegar in her salad
    9·2 answers
  • Line d is parallel to line c in the figure below. Parallel lines d and c are intersected by lines q and p to form 2 triangles. A
    5·1 answer
  • CAN SOMEONE PLEASE HELP ME ON THIS
    6·1 answer
  • Which expression is equal to 4?
    15·1 answer
  • 2 in. 4 in. Q. What is the volume of the composite solid? (round to nearest whole number)​
    9·1 answer
  • What is the property of (4 + 7) + 8 = 4 + (7 +8) ?
    7·1 answer
  • The figure below is reflected over the x-axis. What are the coordinates of the image of point A after this transformation?​
    7·1 answer
  • Identify the zeros of the graphed function.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!