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lorasvet [3.4K]
3 years ago
7

Explain why 1/2 is not equivalent to 2/5.

Mathematics
2 answers:
juin [17]3 years ago
7 0
Find ing the common denominator would make it 10.
for 1/2 to get to 10 you have to multiply by 5
1/2x5= 5/10
then you have to convert 2/5 to get the denominator to be 10
so you multiply 2/5 by 2
2/5x2= 4/10
5/10 is greater than 4/10
umka21 [38]3 years ago
3 0
1/2 = 50%
2/5 = 40%
50% is more than 40%
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A) Work out the size of angle x. b) Give reason for your answer.
enot [183]

A

x=75°

B

We know that ∠EFG=∠ABF because they are corresponding angles.

We also know that ∠x+∠ABF=180, because angles along a straight line always equal 180:

x+105=180

x=75°

6 0
3 years ago
a total of 1500 raffle tickets were collected during the school fair. if you have 30 raffle tickets, what is the probability tha
hammer [34]

Answer: 1/50 or 0.02

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30 / 1500 = 1/50

1/50 or 0.02

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3 years ago
Point A (5, 6) is translated 3 units left and 5 units up, what are<br> the coordinates of A prime?
Radda [10]

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3 0
3 years ago
Five and thirty-nine thousandths in standard decimal form
Nesterboy [21]

Answer:

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5.039

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7 0
2 years ago
A detective finds a victim of murder at 9 am. At that time, the temperature of the body is 90.3 degrees F. One hour later, the b
LekaFEV [45]

Answer:

Step-by-step explanation:

Given

at 9 am temperature of the body is 90.3^{\circ}F

1 hr later temperature 89^{\circ}F

Temperature of room T=68^{\circ}F

According to newtons law

\frac{\mathrm{d} T}{\mathrm{d} t}=-k\left ( T-T_{room}\right )

\frac{\mathrm{d} T}{\mathrm{d} t}=-k\left ( T-68\right )

\frac{dT}{T-68}=-kdt

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=\int \frac{dT}{T-68}=-kdt

\ln |T-68|=-kt+c

T-68=Ae^{-kt}

Now at 9 am i.e. t=0,

90.3=A+68

A=22.3

At 10 am i.e. t=1 hr T=89

89-68=22.3e^{-k}

e^{-k}=21

k=0.06006

Temperature of Normal human body is T=98.6 ^{\circ}F

98.6-68=e^{-0.06006t}

30.6=e^{-0.06006t}

Taking log both sides

t=-5.27

i.e. 5 hr and  16.2 min

i.e. victim murdered at 3 am and 43.8 min

7 0
3 years ago
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