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schepotkina [342]
3 years ago
6

Work out, giving your answer as a mixed number:

Mathematics
2 answers:
anyanavicka [17]3 years ago
8 0

Answer:

1 11/20

Step-by-step explanation:

hope this helps! :)

kykrilka [37]3 years ago
4 0

Answer:

1 \frac{11}{20}

Step-by-step explanation:

3 \frac{3}{4}  - 2 \frac{1}{5}  \\  \\  = 3.75 - 2.2 \\  \\  = 1.55 \\  \\  =  \frac{155}{100}  \\  \\  = 1 \frac{55}{100}  \\  \\ =  1 \frac{11}{20}

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mrs emily want to go shopping but only has $100 to spend. she wants to buy a pair of jeans for $35 and a few dress shirts for $1
stealth61 [152]

Answer:

35x+15y is less than or equal to 100.

Step-by-step explanation:

35 per Jean + 15 per shirt is less than or equal to 100

6 0
3 years ago
Write 5 pounds for $2.49 a unit rate round to the nearest hundredth
slava [35]

About $0.50 per pound.

3 0
3 years ago
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8 0
2 years ago
ACT scores have a mean of 20.8 and 9 percent of the scores are above 28. The scores have a distribution that is approximately no
dimaraw [331]

Answer: 5.37

Step-by-step explanation:

Let x =  ACT scores.

Given: ACT scores have a mean of 20.8 and 9 percent of the scores are above 28. The scores have a distribution that is approximately normal.

i.e. P(X>28)=0.09   (i)

Now,

P(X>28)=P(\dfrac{X-\mu}{\sigma}>\dfrac{28-20.8}{\sigma})\\\\= P(z>\dfrac{7.2}{\sigma})\ \ \ \ [z=\dfrac{X-\mu}{\sigma}]    (ii)

One -tailed z value for p-value of 0.09 =1.3408 [By z-table]

From (i) and (ii)

\dfrac{7.2}{\sigma}=1.3408\\\\\Rightarrow\ \sigma=\dfrac{7.2}{1.3408}\\\\\Rightarrow\ \sigma=5.37

Hence, the standard deviation = 5.37

5 0
3 years ago
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irina1246 [14]

Answer:

the answer is 48, or the second choice B

Step-by-step explanation:


5 0
3 years ago
Read 2 more answers
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