-1 is it a rational

Mathematics

2 answers:

Yuki888 [10]3 years ago

8 0

Yes -1 is a rational number. We can express it as a fraction of two whole numbers

One way is -1 = -1/1

Firlakuza [10]3 years ago

4 0

Yes it is I don’t know the exact exclamation but I know it’s rational

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A brand new video game system sells for $340. If the sales tax is 6.98%, how much will the new video game

tiny-mole [99]

$363.73
The sales tax is $23.73

Steps:
Sales tax is calculated by multiplying the purchase price by the sales tax rate to get the amount of sales tax due. The sales tax added to the original purchase price produces the total cost of the purchase.

So 340 • 6.89%
340• .0698= 23.732
If it’s a percentage you move the decimal two places to the left
340 + 23.73 = 363.73

Hope this helps

6 0

3 years ago

Make b the subject of the formula P=2a+b

Gelneren [198K]

In order to make b the subject of this equation, we must isolate it on the left side. We can do this by following these steps:

$P = 2a+b$

Subtract b from both sides

$P - b = 2a+b-b$

$P-b=2a$

Subtract P from both sides

$P-b-P=2a-P$

$-b=2a-P$

Now, we have isolated b, but it is negative. We can fix this by multiplying both sides of the equation by -1.

$-(-b)=-(2a-P)$

$b=-2a+P$

Which is your final answer.
$b = -2a+P$ .
Hope that helped! =)

5 0

3 years ago

Read 2 more answers

A class sorted 45 books in 90 minutes. How long would it take to sort 120 books?

pav-90 [236]

$45 \ books\ in\ 90\ minutes\\\\
120\ bookes\ in\ x\ minutes\\\\
making\ proportion\\
45-90\\120-x\\\\cross\ multiplication\\\\
45x=90*120\\\\
45x=10800\ \ \ | divide\ by\ 45\\\\x=240\\\\
It\ will\ take\ 240\ minutes.$