Answer:
a. π(9^2)(9) - (1/3)(9^2)(9)
step-by-step explanation:
we assume that container a is the whole cylinder, and that container b is the cylinder with the cone carved out.
the formula for the volume of a cylinder is
vcyl = πr²h
the formula for the volume of a cone is
vcon = (1/3)πr²h
here, we have r=h=9 in both cases, and we want to find the difference of volumes. filling in the numbers gives
vcyl - vcon = π(9²)(9) - (1/3)(9²)(9) . . . matches choice a
comment on notation
exponents rarely get copied properly from other applications to brainly, so some editing may be required. if you don't use the equation editor or special mathematical symbols, the plain-text form for an exponent is
(base)^(exponent) . . . the exponent is signified by a caret (^)
note that grouping symbols may be required. if the exponent has an arithmetic operation in it, then it needs parentheses:
√(x) = x^(1/2)
(x^a)(x^b) = x^(a+b)
the use of the word "over" to signify a fraction is unnecessary and ambiguous. the forward slash (/) is usually used for that purpose. as with the caret, any numerator or denominator consisting of more than a single number or letter needs parentheses: (1/a) + (1/b) = (a+b)/(ab). even if you know that the denominator is a single number, as in 1/3, it understanding to put the fraction in parentheses so the appropriate interpretation is clear. (see above for examples. many people write 1/x+1 when they mean 1/(x+1), so if you mean (1/x)+1, it is to write it that way--even though that is how it should be interpreted.)
Answer:
what is the problem
Step-by-step explanation:
To find the area of a rectangle you just multiply the width by the length so 1.3 times 7 = 9.1
x+y=120_______1
x=4*y_________2
x=4y
substitute 4y for x in equation 1
`4y+y=120
5y=120
eliminate the coefficient of y
y=120/5
y=24
now,input 24 for y in equation 2
`x=4y
x=4*24
x=96
thus, the numbers are
96 and 24
Answer:
The answer is 22.
Step-by-step explanation:
1) Replace the x with 17, and the y with 12.
2) 2(17) - 12
3) 2x17 = 34
4) 34 - 12 = 22
