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Sloan [31]
3 years ago
13

The volume of a cone varies jointly as the square of its radius and its height. if the volume of a cone is 99piπ cubic inches wh

en the radius is 3 inchesinches and the height is 3 ​inches, find the volume of a cone when the radius is 4 inchesinches and the height is 9 inches.
Mathematics
1 answer:
tatyana61 [14]3 years ago
7 0
Any answer choices ?

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A worker gets paid overtime at the rate of normal time plus one third. One week he works 40 hours of normal time and 6 hours ove
Leya [2.2K]

Answer:

$ 720

Step-by-step explanation:

Normal time $ 15

Overtime: 15 x 1/3 = $5 + $15 = $20

(40 x 15) + (6 x 20) = 600 + 120

5 0
2 years ago
What is the y-intercept of the graph of the equation y = 2(x - 3)² + 7?<br> -3<br> 6<br> 7<br> 25
babunello [35]
The y-intercept would be 25, if you want to find the y-intercept, plug in zero for x!
6 0
3 years ago
Emma invested $41,000 in an account paying an interest rate of 2.6% compounded monthly. Assuming no deposits or withdrawals are
kvasek [131]

Answer: it will take 7 years for the value of the account to reach $49,300

Step-by-step explanation:

We would apply the formula for determining compound interest which is expressed as

A = P(1 + r/n)^nt

Where

A = total amount in the account at the end of t years

r represents the interest rate.

n represents the periodic interval at which it was compounded.

P represents the principal or initial amount deposited

From the information given,

P = $41000

A = $49300

r = 2.6% = 2.6/100 = 0.026

n = 12 because it was compounded 12 times in a year.

Therefore,

49300 = 41000(1 + 0.026/12)^12 × t

49300/41000 = (1 + 0.0022)^12t

1.2024 = (1.0022)^12t

Taking log of both sides of the equation, it becomes

Log 1.2024 = 12t × log 1.0022

0.08 = 12 × 0.00095 = 0.0114t

t = 0.08/0.0114

t = 7 years

8 0
3 years ago
5|x3 - 21 + 7 when x = -2.
Tomtit [17]

Answer:

-422

Step-by-step explanation:

51[-2]³ - 21 + 7

51[-8] - 14

-408 - 14 = -422

I am joyous to assist you anytime.

6 0
3 years ago
Simplify question question 18<br><br> ILL MARK BRAINLIST
Ksju [112]

Answer:

x^9y^3

Step-by-step explanation:

Step 1: Write expression

(\frac{x^{\frac{3}{4} }}{y^{\frac{-1}{4} }} )^{12}

Step 2: Simplify Parenthesis

(x^{\frac{3}{4} }}{y^{\frac{1}{4} }} )^{12}

Step 3: Exponent Exponents

(x^{\frac{36}{4} }}{y^{\frac{12}{4} }} )

Step 4: Simplify

(x^9 }}{y^3 )

4 0
4 years ago
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