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Harlamova29_29 [7]
3 years ago
11

Mrs. Wilkinson can buy a 20-ounce box of cereal for $3.60 or a 28-ounce box of cereal for $4.20. Which is the better buy? Explai

n your reasoning
Mathematics
1 answer:
yanalaym [24]3 years ago
4 0
20-ounce box for 3.60 is the better deal, divide each ounce by how much it costs and you can figure out which is cheaper, 28 divided by 4.20 = 4.6...7 20 divided by 3.60 = 5.5...6, so 20 ounces for 3.60 is the better deal, hope this helps
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Someone please explain (:
GaryK [48]

Answer:

a.) 1.38 seconds

b.) 17.59ft

Step-by-step explanation:

h(t) = -16t^2 + 22.08t + 6

if we were to graph this, the vertex of the function would be the point, which if we substituted into the function would give us the maximum height.

to find the vertex, since we are dealing with something called "quadratic form" ax^2+bx+c, we can use a formula to find the vertex

-b/2a

b=22.08

a=-16

-22.08/-16, we get 1.38 when the minuses cancel out. since our x is time, it will be 1.38 seconds

now since the vertex is 1.38, we can substitute 1.38 into the function to find the maximum height.

h(1.38)= -16(1.38)^2 + 22.08t + 6 -----> is maximum height.

approximately = 17.59ft -------> calculator used, and rounded to 2 significant figures.

for c the time can be equal to (69+sqrt(8511))/100, as the negative version would be incompatible since we are talking about time. or if you wanted a rounded decimal, approx 1.62 seconds.

7 0
3 years ago
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Please help me with this
Nikitich [7]

Answer: Your answer is A,C, and D

Step-by-step explanation:

I took that last year and somehow still rememeber it and if you dont believe me click this link and ill show you how on  search Cameron the OG and football Madness and ill give you a link to my third channel Math Nerds an help you

8 0
2 years ago
The expression a÷ 4 is equal to __- for a = 2.6.
Arisa [49]
Oh yeah I have to get to the church ⛪️
5 0
3 years ago
All sacks of sugar have the same weight. All sacks of flour also have the same weight, but not necessarily the same as the weigh
maksim [4K]
Sugar: x pounds
flour: 2x + 5 pounds
2x + 3(2x + 5) = 40
2x + 6x + 15 = 40
8x = 25
x = 3.125
-> a sack of flour is 3.125 + 5 = 8.125 pounds
I hope it‘s coorect
4 0
3 years ago
I need help writing this as a decimal!
Vesna [10]
Write it as 0.35. Hope it helps.

6 0
3 years ago
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