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Amanda [17]
2 years ago
10

Peter and Jane have some money in the ratio 1:3

Mathematics
2 answers:
brilliants [131]2 years ago
6 0

Answer:

Peter has 6 dollars.

Step-by-step explanation:

The ratio is 1:3, meaning Jane has 3x more money than Peter. Or, Peter has 1/3 as much money as Jane. You know that Jane has 12 dollars more than Peter so you can think of scenarios. Because it is a 1/3 the answer for Peters money has to be 1/3 of Janes, so Peter has 6 dollars, and Jane has 12 more, so Jane has 18 dollars.

dexar [7]2 years ago
3 0
Peter=x
Jane=3x
3x-x=12
X=6
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How can you determine whether a rational number will have a terminating or a repeating decimal
Alex787 [66]

Answer:

You can determine this by putting the rational numbers in decimal form.

Step-by-step explanation:

A rational number like 1/2 will have a terminating decimal answer = 0.5

A rational number like 7/11 will have a terminating decimal answer = 0.636 where 36 is repeating.

4 0
3 years ago
debra buys a new mountain bike for 750 dollars . Sales tax is 9% . how much does Debra actually have to pay ?
Georgia [21]

Answer:

$817.50

Step-by-step explanation:

Hello  Matt7151!

To find the total amount, we will first need to find how much tax.

We can express 9% as the fraction \frac{9}{100}.

\frac{9}{100} × 750 = 67.50

So she's paying $67.50 sales tax.

750.00

  67.50

-------------------

 817.50

So Debra's really paying $817.50.

Thus, the answer is \boxed{$817.50}$$\boxed{817.50}$.

5 0
3 years ago
What is the inverse of "f"if f(x)=^3 sqrtx-5
sashaice [31]
<span>y=<span><span>x−5</span><span>−−−−</span>√3

</span></span> <span><span>x=<span><span>y−5</span><span>−−−−</span>√3
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8 0
3 years ago
Read 2 more answers
2(10r-7)-2(1+10r)=-r+2r
DerKrebs [107]

Answer:

r = -16

Step-by-step explanation:

We will use "distributive" property and "adding like terms" concepts in solving for the unknown variable "r".

The distributive property is:

a(b+c) = ab + ac

So

2(10r-7) = 20r - 14

also

-2(1+10r) = -2 - 20r

So, our equation becomes:

2(10r-7)-2(1+10r)=-r+2r\\20r-14-2-20r=-r+2r

Now we add like terms and move variables (r) to one side and numbers to another. Like terms mean:

3r + 5r = (3+5)r = 8r

So, we have:

20r-14-2-20r=-r+2r\\-16=r\\r=-16

So,

the value of r is -16

6 0
3 years ago
What is 823,563 rounded to the nearest ten thousand.
lilavasa [31]

Answer:

~8300,000 or 800,000

Step-by-step explanation:

6 0
3 years ago
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