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3 years ago

X^6 +2x^2 -35

Mathematics

1 answer:

IceJOKER [234]3 years ago

4 0

Answer:

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You have dimes and quarters in your pocket. There are 12 coins that total $2.25. Write and solve a system of linear equations to

icang [17]

Answer:

Hence the System of equation are $\left \{ {{x+y=12} \atop {0.1x+0.25y=2.25}} \right.$

There are 5 dimes and 7 quarters in my pocket.

Step-by-step explanation:

Let Number of dimes be 'x'.

Also Number of quarters be 'y'.

Now Given:

Total Number of Coins = 12

So the equation can be framed as;

$x+y=12 \ \ \ \ equation \ 1$

Also Given:

Total Amount in pocket = $2.25

Now we know that 1 dime = $0.1

Also 1 quarter =$0.25

So the equation can be framed as;

$0.1x+0.25y = 2.25 \ \ \ \ equation \ 2$

Hence the System of equation are $\left \{ {{x+y=12} \atop {0.1x+0.25y=2.25}} \right.$

Now Solving the equation we get;

Now Multiplying equation 2 by 10 we get;

$10(0.1x+0.25y)=2.25\times10\\\\10\times0.1x+10\times0.25y=22.5\\\\x+2.5y=22.5 \ \ \ \ equation\ 3$

Now Subtracting equation 1 from equation 3 we get;

$(x+2.5y)-(x+y)=22.5-12\\\\x+2.5y-x-y =10.5\\\\1.5y =10.5\\\\y= \frac{10.5}{1.5}= 7$

Now Substituting the value of y in equation 1 we get;

$x+y=12\\\\x+7=12\\\\x=12-7 =5$

Hence there are 5 dimes and 7 quarters in my pocket.

6 0

3 years ago

Give the quotient and remainder for 693 divide by 16

wel

Hello!

You can use long division, short division, or a calculator to find the quotient to this question.

693 ÷ 16 = 43 R 11

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3 years ago

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What’s the answer to the riddle?? please help :(

OLEGan [10]

Answer:

is this middle school math? high school or college?

Step-by-step explanation:

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3 years ago

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Nao and Arban drive to work. Nao drives 95 miles in 2.5 hours. Arban drives 128 km in 1 hour 15 min. Work out the difference bet

statuscvo [17]

Answer:

Nao = 95/2.5 = 38 miles per hour

15 min x (1 hour / 60 min) = .25

Arban = 128 km x (1 mile / 1.6 km) / 1.25 hour = 64 miles per hour

Step-by-step explanation:

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3 years ago

24 divided by x = 8,x=

ExtremeBDS [4]

X equals to 3 because if you multiply 3 times 8 which equals to 24.

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4 years ago

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