MATHEMATICS MIDDLE SCHOOL

There are two connected gears. One has 60 teeth and it makes 50 complete revolutions in a minute. How many complete revolutions will the second gear complete, if it has 40 teeth?

Answers

Answer 1

Answer:

60 teeth = 50 revolutions

40 teeth = x revolutions

To figure this out, you can multiply 60 and 50 together to get 3000, and 40 and x to get 40x.

If you solve this equation, 40x = 3000,

x = 75

Hope this helped!

Answer 2

Answer:

The Second gear will complete 75 revolutions.

Hope this helps. I tried using my past knowledge.

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His error is that while 80 is greater than 8, 0.80 = 80/100 = 8/10 and 0.8 = 8/10, so they are equivalent.

360000 as standard form

Answers

Standard form is where you elongate the number so it would actually be
300000+60000

All square numbers ends with ---------------------------- at units place . please find answer URGENT !

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Hello

All square numbers ends with 0,1,4,5,6 or 9 at units place.

Solve with the quadratic formula
4×^2×+1=0

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Answer:

Either x = + i/2 or x = i/2 is the solution for the given quadratic equation.

Step-by-step explanation:

Here, the given quadratic equation is: $4x^2 + 1 = 0$

Now, comparing the given equation with standard Quadratic Form, $ax^2 + bx + c = 0$

we get,a = 4, b =0 and c = 1

Now, the Quadratic Formula is given as:

$x = (-b \pm √(b^2 - 4ac) )/(2a)$

So, here the solution for the given expression is:

$x = (0 \pm √((0)^2 - 4(4)(1)) )/(2(4)) = x = (0 \pm √(-16) )/(8)\n\implies x = (0 \pm4i)/(8)\n\implies x = (0 + 4i)/(8) = (i)/(2) \nor, x = (0 - 4i)/(8) = (-i)/(2)$

Hence, either x = + i/2 or x = i/2 is the solution for the givenquadratic equation.

Jorge planted flowers in his garden. He planted one row of 12 tulips and one row of 36 daisies. What is the ratio of tulips to daisies that Jorge planted? Express the ratio as a fraction and as a decimal.

Answers

The ratio would be 1:3
Fraction: 1/3
Decimal: 1/3
Percentage: 33%

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Answers

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