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Flura [38]
3 years ago
15

Please help!!! Question is in pic attached . (^_^)_/

Mathematics
2 answers:
kupik [55]3 years ago
4 0
Any number thats 8.5 or above
shutvik [7]3 years ago
4 0
Yea any number that's 8.5 or above
You might be interested in
what is the answers?? please lmk i need the hours of Monday to Tuesday and how many hours did the Jacobys did in all ,please exp
SSSSS [86.1K]

Answer:


Step-by-step explanation:

A. Hours driving on monday= 5\frac{3}{4}=23/4 hours (5 x 4 +3)

Hours driving on tuesday= 4\frac{3}{4}=19/4 hours (4 x 4 +3)

Total hours = 23/4 + 19/4 = 42/4 = 10\frac{2}{4} hours

B. Total hours driving = Hours driving on (Monday + tuesday + wednesday + thursday)

Hours driving on wednesday= 2\frac{1}{4}=9/4 hours (2 x 4 +1)

Hours driving on thursday= 6\frac{3}{4}=27/4 hours (6 x 4 +3)

Total hours driving = 23/4 + 19/4 + 9/4 +27/4 = 78/4 = 19\frac{2}{4} hours

7 0
3 years ago
Which of the following are equations for the line shown below? Check all that
Monica [59]

Answer: A, B, C

Step-by-step explanation:

m=\frac{-5-3}{4-(-4)}=-1

Substituting into point-slope form, we get y-3=-(x+4) and y+5=-(x-4). Rearranging this into slope-intercept form,

y-3=-(x+4)\\\\y-3=-x-4\\\\y=-x+1

6 0
2 years ago
Deshaun works as a tutor for 15 an hour and as a waiter for an hour. This month, he worked a combined total of hours at his two
Valentin [98]

Answer:

Total Earning = 15b + M(N - b)

where:

b is the total hours worked as a tutor

M is the amount earned by Deshaun per hour as a waiter

N is the total number of possible hours Deshaun can work in a month

Step-by-step explanation:

Let the number of hours Deshaun works daily as a waiter be w

and the time worked daily as a tutor be t

Deshaun earns $15 per hour as tutor hence daily earnings on tutoring = 15t

Let Deshaun earn $M per hour as waiter, hence daily earning as a waiter is Mw

The total possible hours Deshaun can work in a month is dependent on conditions not specified.

However, assuming 24 working days (6 days weekly for 4 weeks) in a month with maximum approved work hours of 12 hours daily

total hours Deshaun can work will equal 24 x 12 = 288hrs

Note: This 288hrs is an estimate and can change based on applicable hours of work daily and number of working days in a month; it can also be represented as N

If b is the total hours Deshaun worked as a tutor this month,

the hours Deshaun can work as a waiter in a month is equal to 288 - b

Hence in a month, Deshaun will earn 15b as a tutor and M(288-b) as a waiter or optionally M(N - b)

Therefore combined dollar amount earned in a month is

Total Earning = 15b + M(N - b)

7 0
3 years ago
Henry is standing on a bridge over a creek. If he could throw a stone straight up into the air with a velocity of 50 feet per se
Naddika [18.5K]
Henry is 20 feet above the water.  You want to know whether stone can reach
60 feet above the water.  So what you're really asking is:  Calculate whether
the stone can reach 40 feet above Henry, and we can forget about the creek ?

Call Henry's elevation zero, and the height of the stone at any time after
the toss 'H'.

Way back among the pages in your Physics book that are clean and shiny
because they have never yet been exposed to air or sunlight, you will find
the formula for the height of an object in free-fall:

Height = H₀ + V₀t + 1/2 A t²

H₀ = the object's height when it was released
V₀ = the object's speed when it was released, negtive if downward
A = the object's acceleration, negative if downward
t = time since the object was released

In the case that involves Henry on the bridge . . .

H₀ = 0
V₀ = +50 ft/sec
A = -32 ft/sec²  (acceleration due to gravity)

We want to know if the height of the object can ever be +40 feet.
We can plug all the numbers into the equation, and solve it.  Since the equation
is written in terms of ' t ', any solution we get will be a 'time'.  That's not what
we're looking for, but if there's any real solution, then we'll know that it's possible.

40 = 50t + 16t²

Subtract 40 from each side:

16t² + 50t - 40 = 0

Just to make the numbers more manageable, divide each side by 2 :

8t² + 25t - 20 = 0

Plug this into the quadratic formula:

t = (1/16) x (-25 plus or minus the square root of [625 - 640] )

Do you see that 'square root of -15 in there ?

The ' -15 ' is called the 'discriminant' of our quadratic equation, and
since it's negative, our equation has no real solutions ... there's no
such thing as the real square root of a negative number.

So the answer to the question is:  <u>No</u>. The stone never reaches a height
of 40 feet above Henry, or 60 feet above the creek.

Whew!
===============================================

A slightly easier way to do it:

Henry throws the stone upward at 50 ft/sec.
The acceleration of gravity is 32 ft/sec² downward.

The stone keeps rising for (50/32) = 1.5625 second, until its upward speed
has shrunk to zero, and then it starts falling.

How high is it when it stops rising ?

Its upward speed was 50 when Henry tossed it, and zero when it stopped rising.
Its average speed on the way up was (1/2)(50 + 0) = 25 ft/sec upward.

It has that average speed for 1.5625 seconds.
How far does it climb in that time ?

H = (25 ft/sec) x (1.5625 sec) = 39.0625 feet.

That's pretty close, but not quite 40 feet above Henry.
So the answer to the question is:  <u>No</u>.


7 0
4 years ago
Read 2 more answers
What is the sum of the geometric sequence -1, 6, -36, . . . if there are 6 terms?
Nezavi [6.7K]
The formula  is  

Sn  = a1.  1 - r^n
                ---------     where r = common ratio and a1 = first term
                 1 - r

Here we have r = -6  and a1 = -1, and n = 6. So:-

Sum of 6 terms S6  =  -1 *    1 - (-6)^6
                                          -------------  = 6665
                                            1 - (-6)

7 0
3 years ago
Read 2 more answers
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