Mrs. Khavinson bought 1 3/4 kg of potatoes at $1.20 per 100g. How much did she have to pay for the potatoes?

Mathematics

1 answer:

sp2606 [1]3 years ago

7 0

Answer:

$21

Step-by-step explanation:

1 3/4 kg = 1750 g

$1.20/100 g = $? for 1 g

$1.20/100 g = $0.012 for 1 g

$0.012 x 1750 g = $21 for 1750 g = $21 for 1 3/4 kg

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17/39 + 11/12 −( 5/12 + 4 /39 )

Nana76 [90]

Answer:

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Step-by-step explanation:

Make common denominator

204/468 + 429/468 = 633/468 - (195/468 + 48/468)

Simplify: 633/468 - 243/468

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3 years ago

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30 POINTS

PtichkaEL [24]

Answer:

180 degrees per second.

Step-by-step explanation:

We have been given a graph that shows the distance covered by a tire or angular velocity of a tire with respect to the number of seconds (x).

Since we know that a tire is a circle and the measure of all the angles of a circle equals to 360 degrees.

We can see from our given graph that the tire completes one rotation in 2 seconds (2.5-0.5), so the distance covered by tire in two seconds will be 360 degrees. This means that the tire turns 360 degrees in each 2 seconds.

$\text{Degrees turned by tire in 2 seconds}=\frac{360^o}{2\text{ seconds}}$

As we are asked to find the degree change by tire per second so we will find the unit rate such that we will have 1 in our denominator. By dividing our numerator and denominator by 2 we will get,

$\text{Degrees turned by tire in every second}=\frac{180^o}{\text{ second}}$