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3 years ago

1) The width of a rectangle is 6 meters less than its length. The area is 315 square meters. Find the length of the

Mathematics

1 answer:

Gre4nikov [31]3 years ago

3 0

Answer:21

Step-by-step explanation:

x=length

x(x-6)=315

x^2-6x=315

x^2-6x-315=0

(x-21)(x+15)

x=21, x=-15

x cannot be negative so the only answer is 21

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Please answer correctly !!!!!! Will mark brainliest !!!!!!!!!!

AfilCa [17]

Answer:

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Step-by-step explanation:

So make the variables.

Hungarian = x

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3 years ago

121 is increased to 321 percent of change

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Step-by-step explanation:

265.28925619834706%

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3 years ago

Beverage A and Beverage B are sold in identical cans. Beverage A is 6% sugar. The portion of Beverage B that is sugar is 0.21. H

muminat

Answer:

3.5 more times sugar in B

Step-by-step explanation:

We need to see that the fact that Beverage B is 0.21 sugar can be translated to percentages, just by multiplying and dividing by 100 to get it easier to see:

0.21 * 100 /100 = 21/100 = 21% percent

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3 years ago

You purchased a new car for 17,999 in the year 2015. It is now 2020 and you want to sell your car for a fair price. If your car

salantis [7]

Answer:

$7,986.25

Step-by-step explanation:

We can use the following formula to solve:

$A=P(1-r)^t$

P = principal value

r = rate (decimal)

t = time (years)

First, change 15% into a decimal:

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Since 2015 and 2020 are 5 years apart, we will use 5 for t. Now, plug the values into the equation:

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3 years ago

Use distributive property to clear parentheses-(3x-4y+5z)=

Vadim26 [7]

Answer:

-3x + 4y -5z

Step-by-step explanation:

-3x -(-4y) -5z

-3x+4y-5z

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3 years ago