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3 years ago

I need awnsers for questions 1, 3, and 5! WITH WORK PLEASE! GIVING BRAINLYST!

Mathematics

2 answers:

Crazy boy [7]3 years ago

6 0

Answer:

number one is the 45 feet number three is the 12 one i think and five is 70

Step-by-step explanation:

number one is 45 because you basically bring it down to the lowest numbers you can and do the same thing with three and five

4vir4ik [10]3 years ago

6 0

Answer:

Question 2. 1/30

Step-by-step explanation:

If we turn these numbers into fractions it would be --- 10/60 and 5/25.

We are trying to see who walks faster. So we need to subtract.

10/60 - 5/25 = 10/300.

If we were to simplify this it would be that 10/300 = 1/30.

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The radius of a right circular cone is increasing at a rate of 2 inches per second and its height is decreasing at a rate of 4 i

irina [24]

Answer:

The volume of cone changing at rate $\frac{400}{3}\pi in^3/s$

Step-by-step explanation:

Let r be the radius of cone and h be the height of cone

$\frac{dr}{dt}=2 in/s$

$\frac{dh}{dt}=-4 in/s$

We have to find the rate at which the volume of cone changing when r=10 in and h=20 in

Volume of cone

$V=\frac{1}{3}\pi r^2 h$

Differentiate w.r.t t

$\frac{dV}{dt}=\frac{1}{3}\pi (2rh\frac{dr}{dt}+r^2\frac{dh}{dt})$

Substitute the values

$\frac{dV}{dt}=\frac{1}{3}\pi(2\times 10\times 20\times 2+(10)^2\times (-4))$

$\frac{dV}{dt}=\frac{1}{3}\pi(400)=\frac{400}{3}\pi in^3/s$

Hence, the volume of cone changing at rate $\frac{400}{3}\pi in^3/s$

4 0

3 years ago

Please someone help me please it's due in 5 minutes please please. Please don’t answer if you don’t know

Paul [167]

Answer:

6715.486347 or 6715.49

Step-by-step explanation:

6200(1+.04/12)^12x2

6 0

3 years ago

What is the value of the expression 30n when n=2

iris [78.8K]

Hey there!
Since it's 30n, 30 is the coefficient and it's being multiplied by n.
We plug in n.
30(2) =
60
Hope this helps!

8 0

3 years ago

Read 2 more answers

(1,5) (0,3) lie on the line y = 3+2x or not

PolarNik [594]

Answer:

yes

Step-by-step explanation:

To determine if the points lie on the line, substitute the x- coordinate into the equation and if the value agrees with the value of the y- coordinate then the point lies on the line.

(1, 5 )

y = 3 + (2 × 1) = 3 + 2 = 5 ← true

(0, 3 )

y = 3 + (2 × 0 ) = 3 + 0 = 3 ← true

Hence the 2 points lie on the line with equation y = 3 + 2x

7 0

3 years ago

Which property is shown in this example( 4.5 + 3.4 )+ 2.3 = 4.5 +( 3.4 + 2.3)

Mandarinka [93]

Associative property

8 0

3 years ago