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
rodikova [14]
3 years ago
15

30 POINTS

Mathematics
2 answers:
MAXImum [283]3 years ago
7 0

Answer:

12 minutes 40 seconds

Step-by-step explanation:

One keychain, 1 minutes 35 second = 1*60 + 35 = 95 seconds

8 keychains, 95 * 8 = 760 seconds = 760/60 = 12.66667 minutes

= 12 minutes 0.66667*60 seconds

= 12 minutes 40 seconds

butalik [34]3 years ago
5 0

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

You might be interested in
If you flip two coins 76 times, what is the best prediction possible for the number of times both coins will land on tails? ​
ioda

Answer:

38 times

Step-by-step explanation:

A coin has two sides, so there is a 50% chance it will land on either side (assuming perfect conditions and that the coin cannot land vertically). With that in mind, if you flip a coin 76 times, 50% or 1/2 of the times the coin should land on tails. That is 36 times. (Once again, this is under perfect testing conditions. In real life, you probably wouldn't get an even split after only 76 flips.)

Hope this helps :)

3 0
3 years ago
Answer this quickly please!
rodikova [14]

Answer:

\bar v = 60\,mph

Step-by-step explanation:

The distance travelled by Lisa in the first four hours of her trip is:

\Delta s = \left(50\,mph)\cdot (4\,h)

\Delta s = 200\,mi

The distance remaining and her average speed are, respectively:

\Delta s_{R} = 440\,mi - 200\,mi

\Delta s_{R} = 240\,mi

\bar v = \frac{240\,mi}{4\,h}

\bar v = 60\,mph

3 0
3 years ago
HELP!!!!!!!!!! What does each line on the protractor stand for?
Scilla [17]

Answer:

degrees like in angles. from 0 to 180

nwcggov

8 0
2 years ago
J(x) = 2x²+8x-5<br> What is this in vertex form
pav-90 [236]

Answer:

The vertex form parabola   y = 2( x+4)² -37    

Step-by-step explanation:

<u>Step(i):-</u>

Given parabola equation  j(x) = 2x² + 8x -5

Let    y = 2x² + 8x -5

⇒   y = 2(x² + 2(4x)+(4)²-(4)²) -5

By using  (a + b)² = a² +2ab +b²

       y = 2(x+4)²- 32 -5    

        y = 2 ( x-(-4))² -37      

<u><em>Step(ii):-</em></u>

The vertex form parabola   y = a( x-h)² +k

The vertex form parabola   y = 2(x+4)² -37    

   

                   

5 0
3 years ago
I just need help guys
yarga [219]

1 is 20

2 is 40

3 is 60

4 is 80

5 is 100

4 0
3 years ago
Other questions:
  • What is the supplement of an 87 angle ?
    7·2 answers
  • If I had a point at (-2,-2) and I reflected it across y=1, where would the new point be located
    7·1 answer
  • An architect is sketching a blueprint of a patio for a new fence. On the blueprint, C is the midpoint of segment AD. Point B is
    15·1 answer
  • Solve for x 0=3x^2+3x+7​
    8·1 answer
  • Pls help ASAP I need help
    15·2 answers
  • What is the least common multiple of 5 &amp; 6?
    12·2 answers
  • CRITICAL THINKING Tell whether each statement is sometimes, always, or never true. Give an example or a counterexample for each.
    15·2 answers
  • Please Help!
    7·1 answer
  • Convert 8^12 = 3x - 5 to corresponding logarithmic function.
    9·2 answers
  • XY is the diameter of a semicircle. XY is of length 10.2cm.
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!