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Ad libitum [116K]
2 years ago
6

Simplify the expression 0.8+0.65÷0.75

Mathematics
2 answers:
gulaghasi [49]2 years ago
5 0
9 h h h h j huh h j j hi
bogdanovich [222]2 years ago
3 0

Answer:

1.66 (appx)

Step-by-step explanation:

According to BODMAS rule , we should solve division operation in the expression first , then we'll finish the addition opearation .

0.65 \div 0.75 + 0.8

=  >  \frac{65}{100}  \div  \frac{75}{100}  +  \frac{8}{10}

=  >  \frac{65}{100} \times  \frac{100}{75}   +  \frac{8}{10}

=  > \frac{13}{15}  +  \frac{8}{10}

=  >  \frac{(13 \times2) + (8 \times 3) }{30}

=  >  \frac{50}{30}  =  \frac{5}{3}  = 1.6666.........

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Is the line through points p(-7,8) and q(-5,-6) parallel to the line throuh points R(3,-5) and S(-2,0)? explain.
BARSIC [14]
I'm going to use the slope formula which is
m = (y2 - y1)/(x2 - x1)
where (x1,y1) and (x2,y2) are the two points the line goes through

Slope of line PQ
m = (y2 - y1)/(x2 - x1)
m = (-6 - 8)/(-5 - (-7))
m = (-6 - 8)/(-5 + 7)
m = (-14)/(2)
m = -7
The slope of line PQ is -7

Slope of RS
m = (y2 - y1)/(x2 - x1)
m = (0 - (-5))/(-2 - 3)
m = (0 + 5)/(-2 - 3)
m = (5)/(-5)
m = -1
The slope of line RS is -1

Because the slopes are NOT equal (one is -7 and the other is -1), this means the lines are NOT parallel.

-----------------------------------------------------------------------------------------------------

Answer: Choice B) No, the lines have unequal slopes

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3 years ago
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There were 20 boys and 20 girls in a chorus. What is the ratio of boys to girls
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1:1

Step-by-step explanation:

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3 years ago
Which line has a slope of 1 and a y-intercept of 2?
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Step-by-step explanation:

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3 years ago
twice the difference of a number and 7 is equal to three times the sum of the number and 7. find the number​
otez555 [7]

Answer:

- 35  

Step-by-step explanation:

2(x - 7) = 3(x+7)

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Rechecking :

2(-35 - 7) = 3 (-35 +7)

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3 years ago
An amusement park opens daily at 9:30 a.m. This morning the parking lot for the amusement park opened at 8:00 a.m. At 9:00 a.m.,
Eddi Din [679]

Answer:

An exponential function

Step-by-step explanation:

So let's suppose that at 9:00 am there were 132 cars. We'll call this P_0

P_{0}=132

On the next half an hour, let's say at 9:30, the number of cars trippled, this is:

P_{1}=132*3=396

the next half an hour, at 10:00 am, the number of cars trippled, this is:

P_{2}=132*3*3=1188

and finaly, at 10:30am, the number of cars trippled again, so:

P_{3}=132*3*3*3=3564

We can now see a pattern there which can be simplified as:

P(n)=P_{0}(3)^{n}

or

P(n)=132(3)^{n}

where:

P_{0}=initial number of cars

n=number of half hours after 9:00 a.m

P_{n}= number of cars after n number of half hours.

That function we found there is an exponential function, which represents an initial amount being multiplied by the same number several times.

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3 years ago
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