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Ratling [72]
2 years ago
11

You typically buy all of your groceries at Grocery Mart. This week, your favorite cereal is on sale there, 4 boxes for $10. At F

ood Market, where you don’t typically shop, the same cereal is on sale for $2.25 a box.
Mathematics
1 answer:
julia-pushkina [17]2 years ago
8 0

Answer:

B. Food market

Step-by-step explanation:

You typically buy all of your groceries at Grocery Mart. This week, your favorite cereal is on sale there, 4 boxes for $10. At Food Market, where you don’t typically shop, the same cereal is on sale for $2.25 a box. Based on price, which is the better value option?

A.Grocery Mart

B. Food Market

Grocery market:

4 boxes for $10

Unit price = cost / quantity

= $10 / 4 boxes

= $2.50 per box

Food market:

Price per box = $2.25

The better value option based on price is food market because it cost less to buy a box of cereal than grocery mart

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A test tube contains 25 bacteria, 5 of which are can stay alive for atleast 30 days, 10 of which will die in their second day. 1
boyakko [2]

Answer:

c. \frac{1}{5}

Step-by-step explanation:

Given,

Number of bacterias who alive for at least 30 days = 5,

Bacterias who alive for 2 days = 10,

Died bacterias = 10,

Total bacterias = 5 + 10 + 10 = 25,

Ways of choosing a bacteria = ^{25}C_1 = \frac{25!}{1! 24!} = 25,

While, ways of choosing of a bacteria who will live after 1 week = ^5C_1 = \frac{5!}{1!4!} = 5,

Hence, the probability it will still be alive after one week = \frac{5}{25} = \frac{1}{5}

OPTION C is correct.  

3 0
1 year ago
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SOVA2 [1]

Answer:

Tn=13n-18

Step-by-step explanation:

Tn=-5(n-1)13

Simplify

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8 0
1 year ago
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Which statement best describes g (x) = RootIndex 3 StartRoot x + 6 EndRoot minus 6 and the parent function f (x) = RootIndex 3 S
adoni [48]

Answer:

Step-by-step explanation:

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Determine if this conjecture is true. If not, give a counterexample. The difference of two negative numbers is a negative number
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CosA cos2A cos4A cos8A=sin16A/16sinA
Lynna [10]

You can use the result here:

brainly.com/question/11990269

This identity suggests that

\cos A\cos2A\cos4A\cos8A=\dfrac{\cos A+\cos3A+\cos5A+\cdots+\cos15A}8

From here, you can use the sum/difference identities for cosine.

\cos(x+y)=\cos x\cos y-\sin x\sin y

\cos(x-y)=\cos x\cos y+\sin x\sin y

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Apply these carefully to the right hand side and it should reduce quite nicely to the same expression on the left.

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