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Kamila [148]
3 years ago
13

Can someone please help !!!!!

Mathematics
1 answer:
Katen [24]3 years ago
8 0
I'm I am so sorry I haven't done this hey sorry
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When simplified, which of the following expressions has a coefficient of 5?
sergij07 [2.7K]

Answer:

It would be -4x +9x

Step-by-step explanation:

-4 +9 is 5 so they combine since they are like terms. Therefore the coefficient would be 5.

6 0
3 years ago
Can someone help me
Alexxandr [17]

Answer:

i) 0.1056

ii) 0.105

iii) 0.1

iv) 0.1056

Step-by-step explanation:

0.36, to the power of 2 (0.36×0.36) is 0.1296

0.1296-0.03×0.8=0.1056

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2 years ago
What is the value of the expression (81 1/4) ^4
Mama L [17]

the answer is 43580627.44 according to my calculations!

8 0
3 years ago
two pumps of different sizes, working together, can empty a fuel tank in 3 hours. the larger pump can empty the tank in 4 hours
bonufazy [111]
Suppose the larger pump alone can empty the tank in L hours, and the smaller pump can finish the job in S hours, then each hour the large pump empties 1/L portion of the tank, and the small pump empties 1/S per hour
Working together for three hours, they empty the whole tank, which is 100% of it, so 3/L+3/S=100%=1
Larger pump can empty the tank in 4 hours less than the smaller one, so L=S-4
replace L: 3/(S-4)+3/S=1
Make the denominator the same to solve for:
3S/[S(S-4)] +3(S-4)/[S(S-4)]=1
(3S+3S-12)/[S(S-4)]=1
(3S+3S-12)=[S(S-4)]
S^2-10s+12=0
use the quadratic formula to solve for S
S is about 8.6
The answer is not whole hour. 


8 0
3 years ago
Read 2 more answers
Which shows how to determine the volume of the pyramid?
denis23 [38]

Answer:

I think its the first one but I dont remember

8 0
2 years ago
Read 2 more answers
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