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Helga [31]
3 years ago
8

Help me please!!!!!!!!

Mathematics
1 answer:
marusya05 [52]3 years ago
5 0

Answer:

it would be the top right one

Step-by-step explanation:

because 16+4=20 and that one has 20 X's

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Explain using the basic fact can help you find 10×20×30×40 mentally
Daniel [21]
Multiply 20 by 10 first
Then 200 by 30 which is 6000
Then 6000 by 40 which is 240000

Basically just multiply the numbers that's aren't 0
Like 2 in 200 times 3 in 30
Which is 6 then add the 0s so 6+000=6000
8 0
4 years ago
Help me guys and it will be better if you also write the explaination
Dimas [21]

Answer:

Please see below.

Step-by-step explanation:

f^-1 (x) essentially means the reverse.

We can substitute y for x in the equation and solve for y:

x = 4y -1

x+1 = 4y

y = (x+1)/4

so that is our answer for the first one:

f^-1(x) = (x+1)/4

We do the same trick for the second question:

x = 2y +1

x-1 = 2y

y = (x-1)/2

so the answer is f^-1(x) = (x+1)/2

The last question is slightly more complex, we can write is as:

x = 2y/(y-1)

x(y-1) = 2y

yx -x = 2y

yx = 2y + x

yx - 2y = x

y(x-2) = x

y = x/(x-2)

so the answer is x/(x-2)

You can check out my fiverr account for more help; providing detailed explanations to math questions for only $1per question :)

fiverr name: kesja_

5 0
3 years ago
Danny is at a car show. The show has 5 trucks,3electric cars,6sport cars,4hybrid cars. if the vehicles are randomly arranged, Wh
Mice21 [21]
So you have to add up all of the cars which would be 18 and then he sees hybrid which is 4 so 4/18 but you have to simplify which would be 2/9
4 0
3 years ago
One inch is 2.5cm how many inches are there in 24.4cm? (2 d.p)
olganol [36]


one inch---> 24.4 cm

inches in 24.4cm=> 24.4/2.5

=> 9.76cm (2 decimal places)

6 0
3 years ago
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Elena-2011 [213]
Remember the equation to find the circumference?

Equation of circumference: Pi x 2(radius)

Therefore, 3.141592654 x 2(6ft) = 37.7 feet
6 0
4 years ago
Read 2 more answers
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