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4 years ago

1/a ? 1/b If a < b, which symbol makes the sentence true?

Mathematics

1 answer:

sdas [7]4 years ago

3 0

Answer:

1/a < 1/b

Step-by-step explanation:

ghjlhkgfhjkl;kjhgcfv

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last week the mining company brought up 94820 tons of coal if the company was running for 6 days how many tons of coal were brou

mrs_skeptik [129]

15803.33 tons per day were brought up

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3 years ago

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A school chorus has 45 sixth-grade students and 70 seventh-grade students. The music director wants to make groups of performers

Fittoniya [83]

5 groups with 9 sixth-grade students and 14 seventh-grade students in each.

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hope it helps

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3 years ago

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Solve the function below for y when x=12.<br><br><br><br>y=−3x+20

densk [106]

Answer:

y = -16

Step-by-step explanation:

y = -3(12) + 20

y = -36 + 20

y = -16

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6 0

3 years ago

A store sells a 3-pound bag of oranges for $3.60 and a 5-pound bag of oranges for $5.25. What is the difference between the pric

tigry1 [53]

The difference between the price per pound for the three pound bag of oranges and the price per pound for the 5 lb bag of oranges is $0.15

Given

Price of 3lb bag = $3.60

Price of 5lb bag = $5.25

We have to calculate the per pound price for each bag to compare the per pound price for both

Price of one pound in 3lb bag-

$\frac{3.60}{3}=$1.20$

Price of one pound in 5lb bag-

$\frac{5.25}{5} = 1.05$

Difference between the prices-

$1.20-1.05= 0.15$

The difference between the price per pound for the three pound bag of oranges and the price per pound for the 5 lb bag of oranges is $0.15

8 0

3 years ago

A potter forms a piece of clay into a cylinder. As he rolls it, the length, L, of the cylinder increases and the radius, r, decr

stepan [7]

Answer:

The radius is decreatsing at a rate 0.78 cm per second.

Step-by-step explanation:

We are given the following in the question:

$\dfrac{dl}{dt} = 0.7\text{ cm per second}$

Instant radius,r = 2 cm

Instant length,l = 9cm

The radius of the cylinder decreases.

Volume of cylinder =

$V =\pi r^2l$

Since the volume of the cylinder does not changes, we can write:

$\dfrac{dV}{dt}=0$

Rate of change of volume:

$\dfrac{dV}{dt} = \pi(2r\dfrac{dr}{dt}l + r^2\dfrac{dl}{dt})$

Puttiung values, we get

$0 = \pi(2(2)\dfrac{dr}{dt}(9) + (2)^2(0.7))\\\\\dfrac{dr}{dt}=-\dfrac{4\times 0.7}{4\times 9} \approx -0.78$

Thus, the radius is decreatsing at a rate 0.78 cm per second.

5 0

4 years ago