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Ostrovityanka [42]
2 years ago
13

Please help, I'll give brainliest!! Tysm

Mathematics
2 answers:
zmey [24]2 years ago
7 0

Answer:

C.

Step-by-step explanation:

Negative exponents on the top is equivalent to them being positive in the bottom.

kicyunya [14]2 years ago
4 0
The answer should be: A.
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I keep getting the answer wrong to this question can anyone help? ​
Keith_Richards [23]
Circumference,C = 2 πr
C= 2 x 3.14 x 3
C= 18.84 inches
5 0
2 years ago
If y=8 when x =3, find y when x=45
Art [367]
Let's make things easier by simplifying things.

y = 8 and x = 3 is more likely to be understood as a ratio. So for the rest of the answer, their relationship would be represented as y:x

Thus: y:x = 8:3

The problem would be finding y when x = 45

Let us proceed on using the previous equation and substitute x with 45 which would look like this:

y:45 = 8:3

Ratios can also be expressed as fractions which would make things more understandable and easy to solve. So the new form of our equation would be like this:

y/45 = 8/3

Then we proceed with a cross multiplication where the equation becomes like as what is shown below:

3y = 45 * 8

From there, you can solve it by multiplying 45 and 8 then dividing the product with 3 to get y

3y = 360

y = 120

Another way of looking at the problem, especially problems like these, is to take the whole question or statement as an equation. it would probably look like this:

y = 8 when x = 3 : y = ? when x = 45

This would make you understand what approach you can use to solve the given problem.
5 0
2 years ago
Read 2 more answers
In the figure above AB= 4×+6 and BC=7×+15. if AC=120 , find the length of segment AB.?<br>​
stiks02 [169]

Answer:2x+6

Step-by-step explanation:

5 0
2 years ago
On the way to work Juan carpools with a fellow co-worker then takes the city bus back home in the evening. The average speed of
podryga [215]

Answer:

\frac{40r+100}{r(r+5)}

Step-by-step explanation:

Let r represent speed in the carpool.

We have been given that on the way to work Juan carpools with a fellow co-worker then takes the city bus back home in the evening. The average speed of the 20-mile trip is 5 miles per hour faster in the carpool.

We know that time is equal to distance over speed.

The total distance is 20 mile. Time taken to travel 20 miles using carpool would be \frac{20}{r}

The speed on the bus is 5 miles greater, so it will be x+5. Time taken to travel 20 miles using bus would be \frac{20}{r+5}

Total time will be equal to sum of both times that is:

\frac{20}{r+5}+\frac{20}{r}

Let us simplify our expression.

\frac{20r}{r(r+5)}+\frac{20(r+5)}{r(r+5)}

\frac{20r}{r(r+5)}+\frac{20r+100}{r(r+5)}

Combine numerator:

\frac{20r+20r+100}{r(r+5)}

\frac{40r+100}{r(r+5)}

Therefore, our required expression would be \frac{40r+100}{r(r+5)}.

7 0
3 years ago
Marcus count a total of 40 wheel from bicycle and tricycles while sitting on a park bench.Marcus counted 8 bicycles. How many tr
Mice21 [21]
The tricycles have 8.:)
7 0
3 years ago
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