Tom is 10 years older than jannal. The sum of their ages is 64. How old is Tom and jannal

Mathematics

1 answer:

Serhud [2]4 years ago

6 0

Jannal is 54 years old. I know this because if you subtract 64 - 10, you get 54.

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Please help :) thank you!

const2013 [10]

Answer:

Step-by-step explanation:

just plug in the formula

5 0

3 years ago

A sporting goods store has added a section with trail foods and snacks. Raisins cost $5.00 per pound and peanuts cost $3.80 per

Alexxx [7]

HI THERE!
i can help you :)
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let the number of raisins (in pounds) be R and the number of peanuts (in pounds be p.

since the bag is 30 pounds, so R+P =30
the total cost of the bag is 30 pounds* 4.05 per pound = $121.50 .
now we can use the per-pound costs to write an equation . . .
5R+3.8P=121.5

Now just solve that first equation. . (R+P=30) for R. R= 30- P

now use that to substitute in the other equation
5R+3.8P=121.5
5(30-p) + 3.8P=121.5
solve for p
150- 5P+ 3.8p = 121.5
150-1.2p=121.5
150-1.2p=121.5
-1.2p=-28.5
P=23.75

now use that to find r
R+p =30
r+23.75=30
R=6.25

(hope this helps sorry it took so long to type )
have a good day !

5 0

3 years ago

ashley opened a savings account with $4000 and was paid simple interest at an annual rate of 9%. When ashley closed the account,

Otrada [13]

Answer:

4 years

Step-by-step explanation:

I=prt

1440=4000(r)0.09

4000r * 0.09 = 1440

divide both sides by 4000 times 0.09

r = 4

4 0

3 years ago

A fair coin is flipped twelve times. What is the probability of the coin landing tails up exactly nine times?

seraphim [82]

Answer:

$P\left(E\right)=\frac{55}{1024}$

Step-by-step explanation:

Given that a fair coin is flipped twelve times.

It means the number of possible sequences of heads and tails would be:

2¹² = 4096

We can determine the number of ways that such a sequence could contain exactly 9 tails is the number of ways of choosing 9 out of 12, using the formula

$nCr=\frac{n!}{r!\left(n-r\right)!}$