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2 years ago

a machine takes 4.2 hours to make 7 parts . At that rate how many parts can the machine make in 28.8 hours.

Mathematics

1 answer:

muminat2 years ago

5 0

17.28 because 4.2 divided by 7 is .6 then .6 times 28.8 is 17.28

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When The Product of 15 and 40 is divided by the sum of 15 and 45 what is the quotient?

BaLLatris [955]

Answer:

Step-by-step explanation:

(15 x 40) / (15+40)

solve inside the parenthesis:

600/60

divide:

6 0

2 years ago

What is the value of 6 times 7 - 3^2 times 9 + 4^3<br> show work..THX

Kitty [74]

Step-by-step explanation:

6 times7-3^2 times 9+4^3=

(6*(7-3^2))*(9+4^3) =

(6(7-9)) *(9+64) =

(6*-2) (73) =

-12*73

3 0

2 years ago

A function g(x) has x-intercepts at (1/2, 0) and (6, 0). which could be g(x)?

AlexFokin [52]

The x-intercepts of a function are used to express the function into factored form:
From (1/2, 0)
(x - 1/2)

From (6, 0)
(x-6)

(x - 1/2) (x-6) = 0
(2x -1)(x-6) = 0

The function is:
B. g(x) = (x – 6)(2x – 1)

5 0

2 years ago

Read 2 more answers

The volume of a cone of radius r and height h is given by V=πr²h³. If the radius and the height both increase at a constant rate

Aloiza [94]

Answer:

The volume of cone is increasing at a rate 1808.64 cubic cm per second.

Step-by-step explanation:

We are given the following in the question:

$\dfrac{dr}{dt} = 12\text{ cm per sec}\\\\\dfrac{dh}{dt} = 12\text{ cm per sec}$

Volume of cone =

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

where r is the radius and h is the height of the cone.

Instant height = 9 cm

Instant radius = 6 cm

Rate of change of volume =

$\dfrac{dV}{dt} = \dfrac{d}{dt}(\dfrac{1}{3}\pi r^2 h)\\\\\dfrac{dV}{dt} = \dfrac{\pi}{3}(2r\dfrac{dr}{dt}h + r^2\dfrac{dh}{dt})$

Putting values, we get,

$\dfrac{dV}{dt} = \dfrac{\pi}{3}(2(6)(12)(9) + (6)^2(12))\\\\\dfrac{dV}{dt} =1808.64\text{ cubic cm per second}$

Thus, the volume of cone is increasing at a rate 1808.64 cubic cm per second.

5 0

2 years ago

HELP ASAPPPP!!! Question in pic. Find the value of x

erik [133]

Answer:

x = 14

Step-by-step explanation:

30 = 3x - 12 (vertically opp)

30 + 12 = 3x

42 = 3x

42÷3 = x

14 = x

5 0

2 years ago