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Anna [14]
2 years ago
11

Will mark brainlist if right

Mathematics
1 answer:
dlinn [17]2 years ago
7 0

Answer: C.

Step-by-step explanation:

You might be interested in
HELP PLEASE WILL GIVE BRAINLIEST
abruzzese [7]
Answer:
$1.21

Explanation:
What we know:
- $5.88=3 pounds of apples
- price went up by $0.75 per pound

First, we divide $5.88 by 3 to find out how much one pound of apples cost.

5.88/3
=1.96

Therefore, the new price of apples per pound is $1.96.

Because the old price of apples per pound was $0.75 cheaper, we subtract 0.75 from 1.96.

1.96-0.75
=1.21

Therefore, the old price of apples per pound was $1.21.

I hope this helps! Please comment if you have any questions.
7 0
3 years ago
Read 2 more answers
(9b+7)+(4x-3)+(8n+5)=? ​(Simplify your​ answer.)
uysha [10]

Answer:

9b+8n+4x+9

Hope that helps!

8 0
3 years ago
Read 2 more answers
Element X is a radioactive isotope such that every 51 years, its mass decreases by half. Given that the initial mass of a sample
pychu [463]

Answer: It will take 6 years for 7500 grams of X to reach 6900 grams.

Step-by-step explanation:

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant  

t = age of sample

a = let initial amount of the reactant  

a - x = amount left after decay process  

a) for completion of half life:  

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

51=\frac{0.69}{k}

k=\frac{0.69}{51}=0.0135years^{-1}

b) for  7500 g to reach to 6900 g

t=\frac{2.303}{0.0135}\log\frac{7500}{6900}

t=6years

It will take 6 years for 7500 grams of X to reach 6900 grams.

5 0
3 years ago
Can someone help with this please?
lbvjy [14]

Answer:

900

Step-by-step explanation:

Might wanna double check. I rushed

(7m-2m^2n)^2

-42+144

900

8 0
3 years ago
Witch is greater 15/4 or 17/5
Nady [450]
15/4 simplifies to 3 1/2 and 17/5 simplifies to 3 2/5 so 15/4 is greater
6 0
3 years ago
Read 2 more answers
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