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4 years ago

If 5x4(50x378)64592x6356-7436 what is the answer

Mathematics

1 answer:

lora16 [44]4 years ago

4 0

Step-by-step explanation:

20(18900)410546752-7436

=1.551866723×10^14

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The digits of a two-digit number sum to 8. When the digits are reversed, the resulting number is 18 less than the original numbe

Ainat [17]

Answer:

Step-by-step explanation:

Let's make some equations.

The number is two-digit, so let's make it $xy$

Also, the two digits add up to 8, so $x+y=8$

Now the value of $xy=10x+y$

and the value of $yx=10y+x$

Since we know that when we reverse the digits the number is less than the resulting number by 18, we can formulate an equation.

$10y+x=10x+y+18$

Solve this equation.

$9y-9x=18$

$9(y-x)=18$

$y-x=2$

Now let's use the equation we made earlier.

Change $x+y=8$ into $y=8-x$

Solve the system of equations.

$y-x=2$

$y=8-x$

$8-x-x=2$

$8-2x=2$

$-2x=-6$

$x=3$

$y-3=2$

$y=5$

So the original number is 53.

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3 years ago

4 2/5 = _?_ - 1 2/3.

Salsk061 [2.6K]

The answer is 1 2/3+4 2/5=91/15

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3 years ago

A pair of football cleats cost $42.00. Samantha make $1.75 every time she washes the dishes. Write and solve an equation do find

nataly862011 [7]

Easy

Answer:

She will have to wash the dishes 24 times in order to buy the football cleats

Step-by-step explanation:

If she earns $1.75 every time she washes a dish we will have to divide the cost of football cleats with the amount she makes

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3 years ago

What is the solution to the system of equations?

ICE Princess25 [194]

A (-30,8) that’s the answer

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Ulleksa [173]

Answer:

Step-by-step explanation:

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3 years ago

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