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AVprozaik [17]
3 years ago
13

Tori's grandmother is five times older than she is. the sum of tori's and her grandmother age is 72. how old is tori

Mathematics
1 answer:
irina [24]3 years ago
6 0

I think this is the answer + working out

x= Tori's age

y= her grandmother's age

x+y=72

5x=y

5x-y=0

x+y=72

+(5x-y=0)

6x=72

72 divided by 6=

x=12

So Tori is 12...

We substitute 12 for x into the first equation...

12+y=72

Bring 12 to the other side

y=72-12

y=60

Her grandmother is 60 and Tori is 12.

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What is the real interest rate if the nominal interest rate is 1 when the rate of inflation is 2
vovikov84 [41]

Answer:

Real interest rate = -1%

Step-by-step explanation:

Real interest rate=Nominal interest rate - inflation rate

From the above,

Nominal interest rate=1%

Inflation rate=2%

Real interest rate=Nominal interest rate - inflation rate

=1% - 2%

= -1%

Real interest rate = -1%

Real interest rate shows you what it really costs borrowers to pay back their loans.

if the real interest rate is greater than zero, the amount you pay back is worth more in real terms than the money you borrowed.

if the real interest rate is below zero as in the above case, the amount you will pay back is less worth in real terms than the money you borrowed.

7 0
4 years ago
A bike that costs $200 is reduced by 35% in a sale. How much would you pay for the bike after the discount? (your answer must co
patriot [66]

Answer:

$70

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Suppose that 20% of all personal computers of a certain brand break down in the first year of operations. In an office with 10 s
mars1129 [50]

Answer:

d

Step-by-step explanation:

The probability of computers are 20%. Therefore to determine the amount that would break out of 10 we simply just multiply by 0.2.

=10\cdot{0.2}=2

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7 0
3 years ago
Rachel found this rate of change for the scenario represented in the table.
Alex17521 [72]
THE FUNCTION IS CONTINOUS - True
We see from the table that for every hour given, there will be a value of juice (cups) given. The graph would have been a linear graph between the time 4 hours and 8 hours with no jump or holes in the graph. 

TIME REPRESENTS THE DEPENDANT VARIABLE - False
Time is the independent variable as it does not depend on any other value. The number of cups, on the other hand, depends on the number of hours, hence is a dependent variable

THE SCENARIO IS REPRESENTED BY
A LINEAR FUNCTION, SINCE THE RATE OF CHANGE, IS CONSTANT - True
The rate of change is 53 cups per hour, hence the function is linear.

AS THE AMOUNT OF TIME CONTINUES, THERE ARE FEWER CUPS OF JUICE POURED PER HOUR - False
The rate of change is a positive value, hence the number of cups poured per hour will increase

FOR EVERY ADDITIONAL HOUR, 53 CUPS OF JUICED IS POURED - True
The difference between number of cups poured hourly is a constant of 53

8 0
3 years ago
Read 2 more answers
The half-life of Po-210 is 140 days. If the initial mass of the sample is 5
Nata [24]

Answer:

<h2>0.625kg</h2>

Step-by-step explanation:

an equation can be made given by the detials of the problem

f(n)=5(0.5)^(x/140)

where x is the amount of days

plug in 420 for x to get

0.625

8 0
3 years ago
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