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2 years ago

1/2(8a+200b) Is the answer 4a+100b?

Mathematics

2 answers:

kaheart [24]2 years ago

4 0

Answer:

you are correct it is, 4a+100b

Step-by-step explanation:

Sidana [21]2 years ago

4 0

Answer:

Yes

Step-by-step explanation:

When you distribute the 1/2 into the 8a and 200b they turn to 4a and 100b.

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The area of this rectangle is 96 ft2.<br> What is the length and width?

chubhunter [2.5K]

Answer:

length is 8

width is 12

Step-by-step explanation:

the equation to solve this would be

x*(x+4)=96

you isolate the variable by dividing each side by factors that doesn't contain the variable

X would then equal 8

length is 8

width is 8+4= 12

5 0

3 years ago

For the first 30 km, the bicyclist rode with a speed of v km/hour. For the remaining 17 km he rode with a speed which was 2 km/h

damaskus [11]

Answer:

t= 2.52 hours

Step-by-step explanation:

It is given that for first 30 km, the speed of bicyclist is v km/hour

time taken to cover first 30 km is given by

$t_{1} =\frac{30}{v}$ ( $time=\frac{distance}{speed}$ )

for next 17 km the speed of bicyclist is 2 km/hour greater than his original speed

so the speed to cover next 17 km = v+2

time taken to cover next 17 km is given by

$t_{2} =\frac{17}{v+2}$

now total time t spent by the bicyclist to cover entire trip is given by

$t=t_{1} +t_{2}$

$t=\frac{30}{v} +\frac{17}{v+2}$

now if v=18 , we have

$t=\frac{30}{18} +\frac{17}{20}$

now to add fractions we make the denominator same

Hence we will find the LCM of 18 and 20

LCM of 18 and 20 = 180

now we need to make both the denominator equal to 180

$t=\frac{30(10)}{18(10)} +\frac{17(9)}{20(9)}$ $t=\frac{300}{180} +\frac{153}{180} =\frac{300+153}{180}$

$t=\frac{453}{180} =2.52$ hours (approx)

7 0

3 years ago

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anastassius [24]

B I’m guessing, never really worked with something like this before though

3 0

3 years ago

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astraxan [27]

Juanita is 18 years old.
33-15
18

Hope this helps

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3 years ago

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what is the probability of flipping a coin 10 times and getting tails8 times? Round your answer to the nearest tenth of a percen

slava [35]

The answer is 8/10 and that simplified is 4/5

4 0

3 years ago