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MakcuM [25]
4 years ago
12

What’s the quadratic expression for this one

Mathematics
1 answer:
Vikki [24]4 years ago
6 0
We have the following expression:
 (2x + 5) * (7-4x)
 Rewriting we have:
 14x - 8x ^ 2 + 35 - 20x
 Grouping terms with the same exponent:
 -8x ^ 2 + x (14-20) + 35
 Rewriting:
 -8x ^ 2 - 6x + 35
 Answer:
 
the quadratic expression for this is:
 
-8x ^ 2 - 6x + 35
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3 years ago
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In a shop, two kinds of candies A and B were sold at $2 each and $5 each respectively. Tammy paid at least $75 for 20 candies A
olga55 [171]

Answer:

Exact answer not possible:  See below.

Step-by-step explanation:

The total that Tammy would pay is the sum of 2A and 5B, where A and B are the number of candies costing $2 and $5, respectively.  Therefore:  

2A + 2B = Total Spent

We are told Tammy spent <u>at least</u> $75, which can be written as "Total Spent > $75."

The equation becomes 2A + 5B > 75

Rearranging:  

2A + 5B > 75

2A  > 75 - 5B

A  > (75 - 5B)/2

To find the maximum of the candy A bought, one can try different values of A and B that result in a total of at least $75.  If the amount spent were $75 exactly, a solution would be 35 A (for $70), leaving $5 for 1 candy B.  But we don't know the exact amount.  The problems states "at least $75."  As far as we know, Tammy may have spent $105, $405, $1,005, or even $4,005 (200 A and 1 B).  One cannot pick a maximum simply since the maximum spent is not defined.  The next possible value above $75 would be $77, which represents 36 A and 1 B candies.

6 0
2 years ago
Goofy wants to buy white rice. The store has 4 different sizes of white rice bags: $2.00 for 1 pound, $4.25 for 2 pounds, $9.50
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Answer:

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Step-by-step explanation:

This is a critically important question to know the answer to. It is used almost every day by good shoppers.

The trick is to get everything down to 1 pound.

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$2.00 per pound. The question is the answer.

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3 years ago
What times what equals 450
tankabanditka [31]
45\times10=450
3 0
4 years ago
The following table shows the data collected from four random samples of 50 students from a small middle school regarding their
Sonbull [250]

Answer:

Answer: The reading that is preferred by the majority of students in the samples is: Novels.

Step-by-step explanation:

We are given table of data that represents the reading preferences of 50 students as:Sample# Novels Short Stories Classics ComicBooks Total 1 26 19 1 4 50 2 30 10 3 7 50 3 33 15 1 1 50 4 22 18 2 8 50Clearly from all the 4 samples we could observe that most students like: Novels.and then they love Short stories , after which they love to read Comic books and the least preferred readings is: Classics.

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3 years ago
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