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spayn [35]
2 years ago
14

How much should 5x³+3x²-2x+1 be increased to get 6x² +7​

Mathematics
1 answer:
Mnenie [13.5K]2 years ago
5 0

Answer:

-5x³ + 3x³ + 2x + 6

Step-by-step explanation:

if that is truly the complete problem description, then the only possible answer I can think of, that makes any sense :

what do I need to add to 5x³+3x²-2x+1 to get 6x²+7 ?

the answer is

6x²+7 - (5x³+3x²-2x+1) = 6x²+7-5x³-3x²+2x-1 =

= -5x³ + 3x³ + 2x + 6

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jeka94
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4 0
2 years ago
The speed of the current is 7 mph. The boat travels three times slower against the current than with the current. What is the sp
svlad2 [7]
Let
x--------> <span>the speed of the boat in mph

we know that
</span>going upstream the speed is x-7 
<span>going downstream the speed is x+7 
</span>
let the distance be d 
<span>time to go upstream = d/(x-7) </span>
<span>time to go downstream = d/(x+7)
</span>
time going upstream is 3 times going downstream 
so
<span>3d/(x+7) = d/(x-7) </span>
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<span>3/(x+7) = 1/(x-7) </span>
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<span>x = 14 
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the answer is
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7 0
3 years ago
10x−y = 10<br> −2x+ 5y = −2
Viefleur [7K]

Answer:

x=1 & y=0

Step-by-step explanation:

5 0
1 year ago
NEED HELP ASAP!!
devlian [24]

Answer:we multiply by the reciprocal of a fraction when completing a division problem because it is a rule in mathematics that when you divide two fraction, you change the division sign to multiplication and flip the fraction at the right of the multiplication sign.

Step-by-step explanation:

For example if you have 4÷ 1/2. It basically means how many 1/2 can one get in 4. And the answers is 8.

Therefore multiplying by the reciprocal of a fraction when completing a division problem is a short cut method that has been tested and proven to be correct.

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3 years ago
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8 0
3 years ago
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