Answer:
r = 2cm
h= 18cm
surface area of cylinder = 2πr ( r + h)
= 2*22/7*2(2+18)
= 125.714cm²
volume of cylinder = πr²h
22/7*(2)²*18
=226.29cm³
Answer: x = 9
Step-by-step explanation:
15 / 20 = (2x + 3) / 28
cross multiply
15(28) = 20(2x + 3)
420 = 40x + 60
360 = 40x
x = 9
Let's solve for n.<span>d=<span><span>3m</span>+<span>7n</span></span></span>
Step 1: Flip the equation.<span><span><span>
3m</span>+<span>7n</span></span>=d</span>
Step 2: Add -3m to both sides.<span><span><span><span>
3m</span>+<span>7n</span></span>+<span>−<span>3m</span></span></span>=<span>d+<span>−<span>3m</span></span></span></span><span><span>
7n</span>=<span>d−<span>3m</span></span></span>
Step 3: Divide both sides by 7.
<span><span><span>7n/</span>7</span>=<span><span>d−<span>3m/</span></span>7
</span></span><span>n=<span><span><span>1/7 </span>d</span>+ <span><span><span>−3/</span>7</span><span>m</span></span></span></span>
Answer:
the reasonable prediction for the number of unsuccessful rollls is 15 ÷ 18
Step-by-step explanation:
The computation of the number of unsuccessful rolls is as follow:
For a number cube, the probability of getting 6 would be 1 ÷ 6 and for not getting is 5 ÷ 6
Now for 18 rolls i.e. there is 3 group of 6 so the chance of not getting would be 15 ÷ 18
Hence, the reasonable prediction for the number of unsuccessful rollls is 15 ÷ 18
The same is to be considered