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3 years ago

Question

Mathematics

1 answer:

notka56 [123]3 years ago

5 0

Area of rectangle = 9 x 15 = 135
Area of half the circle = 0.5(3.14)(r^2) = 0.5(3.14)(20.25) = 31.7925
Area of shaded region = area of rectangle - area of half the circle = 135 - 31.7925 = 103.2

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Estimate the time Juanita will arrive at her aunt's home 320 miles away if she leaves at 9:00 a.m., drives about 60 miles per ho

uranmaximum [27]

Answer:

D. 3:00 p.m.

Step-by-step explanation:

d = Distance = 320 miles

s = Speed = $60\ \text{mph}=\dfrac{60}{3600}=\dfrac{1}{60}\ \text{miles/s}$

Time taken is given by

$t=\dfrac{d}{s}\\\Rightarrow t=\dfrac{320}{\dfrac{1}{60}}\\\Rightarrow t=19200\ \text{s}$

40 minutes break is $40\times 60=2400\ \text{s}$

Total time taken is $19200+2400=21600\ \text{s}=\dfrac{21600}{60\times 60}=6\ \text{hours}$ .

So, the entire trip took 6 hours. 6 hours after 9 a.m. is 3 p.m.

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3 years ago

What is the cost of 3.5kg of pork at $7.99/kg?

Veronika [31]

It is given in the question that cost of pork is $7.99/kg.

It means cost of 1 kg pork is $7.99.

Cost of 2 kg of pork is

$=2*7.99 = $15.98$

And cost of 3 kg of pork is

$= $7.99*3 = $23.97$

Therefore cost of 3.5 kg of pork is

$= 3.5*7.99 = $27.965$

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4 years ago

A stone is an English measure of weight. There are 14 lb in 1 stone and 2.2 lb in 1 kg.

AveGali [126]

We should use lb to convert weight to kg

let unknown lb be = X
14 lb = 1 stone
X lb = 9 stone
Cross multiply : X × 1 = 9 × 14
X = 126 / 1 = 126 lb

9 stone = 126 lb
let unknown value of kg be = Y
2.2 lb = 1kg
126 lb = Y kg
Cross multiply : 2.2 × Y = 126 × 1
Y = 126 / 2.2 = 57.3 kg

So 9 stone = 126 lb = 57.3 kg

HOPE IT HELPED !!

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Answer:
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