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3 years ago

Austin had $70 dollars in his bank account. he purchased made a purchase for $83. What is the balance of his bank account?

Mathematics

2 answers:

Simora [160]3 years ago

5 0

He would have -13$ In his Bank Account

Pani-rosa [81]3 years ago

3 0

He started out with $70 but he spent $83

70-83= -$13

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Solve the proportional equation b/10=3/5

ra1l [238]

Answer: b is 6

Step-by-step explanation:

Set the proportions up and solve for b

b. 3

---- = ------

10. 5

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3 years ago

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A student finds the slope of the line between (8,7) and (1,4). She writes 17-4/1-8. What mistake did she make

Ksju [112]

Answer:

It's supposed to be 4-7/1-8

Step-by-step explanation:

The formula for slope is y1 - y2 / x1 - x2 (subscript). So you would take the y value from (8,7) which is 7, and subtract by the y value from (1,4), which is 4. You do the same for the x values and you get 7-4/8-1, which is 3/7.

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3 years ago

Please answer the question no photos and no words just plain working out

Firlakuza [10]

Answer:

Step-by-step explanation:

volume of a prism =base area * length

35 = base area * 7

35/7 = base area

5 cm^2 =base area

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3 years ago

Solve the simultaneous Equation using the two methods 4m=n +7 3m+ 4n+9=0

GrogVix [38]

Elimination method:

4m = n + 7

3m + 4n + 9 = 0

First, let's get the equations in the same form.

4m - n - 7 = 0

3m + 4n + 9 = 0

Now let's make multiply the first equation by 4 so we can eliminate n.

16m - 4n - 28 = 0

+3m + 4n + 9 = 0

Now we can add the equations.

16m + 3m - 4n + 4n - 28 + 9 = 0

19m + 0n - 19 = 0

19m - 19 = 0

19m = 19

m = 1

Now we put m back into one (or both) of the original equations.

4(1) = n + 7

4 = n + 7

n = -3

If you plug m into the other equation, you get the same result.

Substitution method:

4m = n + 7

3m + 4n + 9 = 0

With this method, we plug one of the equations into the other one. I'm going to use m in the second equation as a substitute for m in the second equation.

3m + 4n + 9 = 0

3m = -4n - 9

m = (-4/3)n - 3

Now I can substitute the right side into the first equation like so:

4[(-4/3)n - 3] = n + 7

(-16n)/3 - 12 = n + 7

(-16n)/3 = n + 19

-16n = 3(n + 19)

-16n = 3n + 57

0 = 16n + 3n + 57

0 = 19n + 57

0 = 19n/19 + 57/19

0 = n + 3

-3 = n

And then we put that back into one of the original equations.

4m = n + 7

4m = -3 + 7

4m = 4

m = 1

Hopefully you learned something from this.

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3 years ago

What is 65 to the 5 power multiplied by 10 to the 9 power divded by 42??

Tcecarenko [31]

So lets set up what our question looks like.
$65^{5} * 10^{9} 
$ ÷ 42

So we can follow the rules of PEMDAS
and it says to figure out exponents first.
So $65^{5} = 1,160,290,625
$
And..
$10^{9} = 1,000,000,000

$

Now we have to multiply those two numbers next...
1,160,290,625 x 1,000,000,000 = 1,160,290,625,000,000,000

Big numbers...
Now to divide that by 42
1,160,290,625,000,000,000 ÷ 42 = 27,625,967,260,000,000

I'm not sure if this is the correct answer anymore.
But my answer is 27,625,967,260,000,000

GOOD LUCK! :P

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3 years ago