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borishaifa [10]
3 years ago
15

Which polynomial represents the difference 6x2+3x-8 and x2-3x+4

Mathematics
1 answer:
Semmy [17]3 years ago
6 0
The difference will be
6x^2+3x-8 - (x^2-3x+4) \\ =
6x^2-3x-8-x^2+3x-4 \\ =
5x^2 -12.
Remember that parentheses are needed for the second polynomial because the negative is distributed to all of its terms.

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A store is having a sale. You can buy 14 cards for $6. What is the cost of 35 cards during this sale?
skad [1K]

Answer:

15$

Step-by-step explanation:

14=$6

35=6*35/14

15

5 0
3 years ago
Alexis and tara both mine salt. alexis mines 300 pounds in 20 hours. tara mines 400 pounds in 40 hours. which of the following i
Archy [21]
Well, if both Alexis and Tara mine salt for 40 hours... they'd have mine 1,000 pounds of salt. Is this what you were looking for?
7 0
3 years ago
Figure A is a scale image of Figure B, as shown.
Inessa [10]

9514 1404 393

Answer:

  x = 2

Step-by-step explanation:

Using the scale factor, we have ...

  x/8 = 0.25/1

  x = 8(0.25) . . . . multiply by 8

  x = 2

_____

<em>Additional comment</em>

I like to write proportions with the variable in the numerator. That way they are easily solved by a single multiplication. The trick is to get corresponding parts in the same positions. Here, the fractions are written ...

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5 0
3 years ago
sophie was 28 years old when daughter Nichole was born. In how many years will Sophie be two years less than still times Nichole
Kamila [148]
It will take 6 years for that to happen. 

You can find this by setting Nichole's age as x and Sophie's age as x + 28 since she will always be 28 years older. 

Now we are looking for a time that Sophie's age is equal to 2 less than 6 times Nichole's age. So we can set up the below equation. 

6(x) - 2 = x + 28
6x - 2 = x + 28
5x - 2 = 28
5x = 30
x = 6

This let's us know that it needs to be when Nichole is 6, which is 6 years in the future. 
6 0
3 years ago
When Janice is 20 years old; her brother is half her age. When Janice is 30 years old; how old is her brother?
Snezhnost [94]
20 years old
Her brother
7 0
3 years ago
Read 2 more answers
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