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Gennadij [26K]
3 years ago
5

during the 31 nights of October , Keith kept track of his sleep. he slept a total of 297 hours . How many hours of sleep did he

average each night ?
Mathematics
1 answer:
love history [14]3 years ago
3 0

297/31 = 9.6 hours

i think

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Find the slope and the y-intercept of the line.
baherus [9]
What i got was y=-3x-1
4 0
2 years ago
A ball is thrown into the air. The height in feet of the ball can be modeled by the equation h = -16t2 + 20t + 6 where t is the
makkiz [27]

f(t)=h=-16t^2+20t+6



a=-16, b=20, c =6

Δ=b^2-4ac=20^2-4*(-16)*6=400+384=784

\sqrt{Δ}=\sqrt{784}=28

max:

p=-\frac{b}{2a}=-\frac{20}{-32}=\frac{20}{32}=\frac{5}{8}

max heigh: h=-16(\frac{5}{8})^2+20*\frac{5}{8}+6=-16\frac{25}{64}+\frac{100}{8}+6

h=-\frac{25}{4}+\frac{50}{4}+6=\frac{-25+50+24}{4}=\frac{49}{4}

h=\frac{49}{4} at t=\frac{5}{8}s


will fall down at t:

t=\frac{-20-28}{-32}=\frac{-48}{-32}=\frac{3}{2}=1.5

t=1.5s

8 0
3 years ago
A chain has a ribbon tied to it every 2/3 foot. If the chain is 10 2/3 feet long, how many ribbons are tied to the chain??
patriot [66]

Answer:

16 ribbons

Step-by-step explanation:

Given the length of the chain as 10\frac{2}{3} and there is a ribbon tied to it every \frac{2}{3}, we can take the total length of the chain and divide by the measure of \frac{2}{3}:

10\frac{2}{3}=\frac{32}{3}

\frac{\frac{32}{3}}{\frac{2}{3}}=\frac{32}{3}*\frac{3}{2}=\frac{96}{6}=16

When dividing with fractions, we use the rule of 'keep/change/flip' to keep the first fractions, change the operation to multiplication and flip the second fraction.  

7 0
3 years ago
if grace and claire parents each invested 7,600 into college saving account when the girls were born how much money will each gi
Mrrafil [7]

Answer:

7,600

Step-by-step explanation:

both parents invest 7,600.

7,600x2= 15,200

there are 2 girls so divide 15,200 by 2 and u get 7,600

3 0
2 years ago
A rectangular prism has a length of 1 centimeters, a width of 4 centimeters, and a height of
gregori [183]

Answer: 13 cm^3

Step-by-step explanation:

The volume of a rectangular prism is the height*width*length.

3 1/4 as a decimal is 3.25.

Now we can plug in the given values into the formula for the volume.

Therefore, the volume = 3.25 cm * 4 cm * 1 cm

= 13 cm^3

4 0
2 years ago
Read 2 more answers
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