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lianna [129]
3 years ago
14

A grand piano can weight 1 and half ton how many ounces can a grand piano weigh

Mathematics
1 answer:
Korvikt [17]3 years ago
6 0
1.5 tons= 48,000 ounces
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Three students failed their last test. If 12% of the class failed, how many students are in the class?
stellarik [79]

Answer:

There are 25 students in the class.

Step-by-step explanation:

Let x be the number of students in the class

12% failed and the number of students is 3

x*12% = 3

x*.12 = 3

Divide each side by .12

x * .12 /.12 = 3/.12

x =25

There are 25 students in the class

3 0
2 years ago
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If iḿ 14 and my brother is 6 how old will my brother be when iḿ 21?
MakcuM [25]

Answer:

The brother would be 13

Step-by-step explanation:

14 - 6= 8

There's an 8-year difference

21 - 8= 13

6 0
2 years ago
Helppppp pleaseeee !
igomit [66]

The answer is B.) x2-14x+2y

6 0
3 years ago
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Newly purchased tires of a particular type are supposed to be filled to a pressure of 30 psi. Let m denote the true average pres
dimulka [17.4K]

Answer:

a) 48.21 %

b) 45.99 %

c) 20.88 %

d) 42.07 %

e) 50 %

Note: these values represent differences between z values and the mean

Step-by-step explanation:

The test to carry out is:

Null hypothesis  H₀    is                           μ₀ = 30  

The alternative hypothesis                      m  ≠ 30

In which we already have the value of z for each case therefore we look  directly the probability in z table and carefully take into account that we had been asked for differences from the mean (0.5)

a)  z = 2.1   correspond to  0.9821  but mean value is ubicated at 0.5 then we subtract    0.9821 - 0.5  and get 0.4821   or 48.21 %

b)  z = -1.75   P(m) = 0.0401     That implies the probability of m being from that point p to the end of the tail, the difference between this point and the mean so 0.5 - 0.0401 = 0.4599 or 45.99 %

c)  z = -.55    P(m) = 0.2912    and this value  for same reason as before is 0.5 - 0.2912 = 0.2088  or 20.88 %

d)  z = 1.41     P(m) = 0.9207    0.9207 -0.5     0.4207  or  42.07 %

e)  z = -5.3   P(m) = 0    meaning there is not such value in z table is too small to compute  and difference to mean value will be 0.5  

d)  z= 1.41      P(m) =

4 0
2 years ago
PLEASE HELP ASAP!
brilliants [131]

Answer:

-4,790

Step-by-step explanation:

60 x 389 = 23,340

18,550 - 23,340 = -4,790

5 0
2 years ago
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