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3 years ago

Which of these ratios is NOT in simplest form? 4/9 11/13 6/5 14/21

2 answers:

7 0

The answer is 14/21.

This fraction can be reduced to 2/3.
Just divide each number by seven.
For the other fractions, if you can find a number that can be divided into each then it is not in simplest form.

nordsb [41]3 years ago

5 0

I have to say 11/13. Hope this helps!

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a man on the fifth floor of a building shouts down to a person on the street. if the angle of elevation from the street to the m

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25 feet hope this help :)

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3 years ago

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Maya is saving money to buy a game. So far she has saved $6, which is two-thirds of the total cost of the game. How much does th

makkiz [27]

Answer:

9 dollars

Step-by-step explanation:

Since 6 is 2/3 of the total price, and half of 6 is 3, add three to 6 and you get 9.

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2 years ago

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Gravel is being dumped from a conveyor belt at a rate of 20 ft3 /min and its coarseness is such that it forms a pile in the shap

pantera1 [17]

Answer:

The height of the pile is increasing at the rate of $\mathbf{ \dfrac{20}{56.25 \pi} \ \ \ \ \ ft/min}$

Step-by-step explanation:

Given that :

Gravel is being dumped from a conveyor belt at a rate of 20 ft³ /min

i.e $\dfrac{dV}{dt}= 20 \ ft^3/min$

we know that radius r is always twice the diameter d

i.e d = 2r

Given that :

the shape of a cone whose base diameter and height are always equal.

then d = h = 2r

h = 2r

r = h/2

The volume of a cone can be given by the formula:

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

$V = \dfrac{\pi (h/2)^2 h}{3}$

$V = \dfrac{1}{12} \pi h^3$

$V = \dfrac{ \pi h^3}{12}$

Taking the differentiation of volume V with respect to time t; we have:

$\dfrac{dV}{dt }= (\dfrac{d}{dh}(\dfrac{\pi h^3}{12})) \times \dfrac{dh}{dt}$

$\dfrac{dV}{dt }= (\dfrac{\pi h^2}{4} ) \times \dfrac{dh}{dt}$

we know that:

$\dfrac{dV}{dt}= 20 \ ft^3/min$

So;we have:

$20= (\dfrac{\pi (15)^2}{4} ) \times \dfrac{dh}{dt}$

$20= 56.25 \pi \times \dfrac{dh}{dt}$

$\mathbf{\dfrac{dh}{dt}= \dfrac{20}{56.25 \pi} \ \ \ \ \ ft/min}$

The height of the pile is increasing at the rate of $\mathbf{ \dfrac{20}{56.25 \pi} \ \ \ \ \ ft/min}$

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3 years ago

What property describes the number sentence 6+0=6

yawa3891 [41]

The identity property. the same applies for n*1=n.

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3 years ago

Absolute value -30 minus absolute value -4 plus absolute value 5=

Fittoniya [83]

Answer:

Step-by-step explanation:

|-30| - |-4| + |5| = 30 - 4 + 5 = 31

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2 years ago