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Natalija [7]
3 years ago
14

You are at a grocery store and are trying to decide which box of popcorn you should buy. Pop Secret has 5 packets that costs $3.

28. Jiffy Pop has 7 packets and costs $4.99. Which is the better deal? Show your work and explain your answer in complete sentences.
Mathematics
2 answers:
Basile [38]3 years ago
6 0

Answer:

Pop Secret

Step-by-step explanation:

We need to know how much each packet costs for the two brands.

Divide the total cost by the number of packets.

3.28 divided by 5   =   .66

and

4.99 divided by 7    =   .71

So, the better deal is Pop Secret because their packets are .05 cheaper.

Another way to look at it,....  if you were to buy 7 of the Pop Secret at .66 ea., you'd spend $4.60 compared to buying 7 of the Jiffy Pop (at .71 ea.) for $4.99 - a savings of .39.

Alex_Xolod [135]3 years ago
3 0

Answer:

shush

Step-by-step explanation:

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A soccer ball is kicked from 3 feet above the ground. the height,h, in feet of the ball after t seconds is given by the function
dexar [7]
Here's our equation.

h=-16t+64t+3

We want to find out when it returns to ground level (h = 0)

To find this out, we can plug in 0 and solve for t.

0 = -16t+64t+3 \\ 16t-64t-3=0 \\ use\ the\ quadratic\ formula\ \frac{-b\±\sqrt{b^2-4ac}}{2a}  \\ \frac{-(-64)\±\sqrt{(-64)^2-4(16)(-3)}}{2*16}  = \frac{64\±\sqrt{4096+192}}{32}

= \frac{64\±\sqrt{4288}}{32} = \frac{64\±8\sqrt{67}}{32} = \frac{8\±\sqrt{67}}{4} = \boxed{\frac{8+\sqrt{67}}{4}\ or\ 2-\frac{\sqrt{67}}{4}}

So the ball will return to the ground at the positive value of \boxed{\frac{8+\sqrt{67}}{4}} seconds.

What about the vertex? Simple! Since all parabolas are symmetrical, we can just take the average between our two answers from above to find t at the vertex and then plug it in to find h!

\frac{1}2(\frac{8+\sqrt{67}}{4}+2-\frac{\sqrt{67}}{4}) = \frac{1}2(2+\frac{\sqrt{67}}{4}+2-\frac{\sqrt{67}}{4}) = \frac{1}2(4) = 2

h=-16t^2+64t+3 \\ h=-16(2)^2+64(2)+3 \\ \boxed{h=67}


8 0
3 years ago
Make v the subject of the formula T = v/6 -5
OverLord2011 [107]

Answer:

Step-by-step explanation:

T=V/6-5

T+5=V/6

6(T+5)=V

V=6T+30

8 0
2 years ago
Which model shows the correct factorization of x2 – x – 2?
Murljashka [212]

Answer: The correct factors are

(x-1) and (x+2)

Step-by-step explanation:

Step one :

To factorize the equation

x²– x – 2=0

First we look for numbers that when multiplied will result to the constant term and when added will result to the second term (1x, - 2x)

Step two :

We replace the second term with these factors we have

x²–(x-2x)–2=0

x²–x+2x–2=0

Factoring the expression we have

x(x–1)+2(x–1)=0

Hence the factors will be

(x-1) and (x+2)

8 0
3 years ago
Read 2 more answers
I'm really lost on this problem
Alenkinab [10]
Since you need a little bit of trigonometry to solve this problem,
I'm pretty sure you've had a little bit of trigonometry in class before
you were assigned to solve this problem.

-- The shaded triangle comes from taking the equilateral triangle and
either folding it in half or cutting it in half.

-- The base that the new triangle is standing on is 1/2 the base of the
equilateral triangle, so it's 7 cm long.

-- The acute angle at the right end of the base is the same as it was in
the equilateral triangle . . . 60 degrees.

--  The tangent of 60 degrees is (opposite side)/(adjacent side) = x / 7 cm

              tan(60) = x/7

-- Multiply each side of this little equation by 7 :   7 tan(60) = x
 
If you don't have the tangent of 60 degrees in your pocket, you can
find it with your calculator.  Multiply it by 7, and Shazam, you know 'x' .
5 0
3 years ago
I need help again if I don't get this right then I'll have to do the lesson all over again and I'm already 10 lessons behind!
xxTIMURxx [149]
<h3>♫ - - - - - - - - - - - - - - - ~<u>Hello There</u>!~ - - - - - - - - - - - - - - - ♫</h3>

➷ It would be option D

<h3><u>✽</u></h3>

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

6 0
3 years ago
Read 2 more answers
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