The given range is comprised of cards with a value between 3 and 7, inclusive, and there are 4 of each from the available suits. So there are 20 cards that fit the bill.
The probability of drawing 1 such card is
Answer:
I would expect rain 5 days
Step-by-step explanation:
Please kindly see the attached files for explanation.
Answer: She had 20 gallons to begin with.
Step-by-step explanation:
16 = 6 + 1/2x
x = the amount she had to start with
Subtract 6 from each side
10 = 1/2x
Divide each side by 1/2
20 = x
Answer: the speed of the river is 9km/h
Step-by-step explanation:
Let x represent the speed of the river current.
He rides 140 km downstream in a river in the same time it takes to ride 35km upstream. This means that his speed was higher when riding downstream and it was lower when riding upstream.
Assuming he rode in the direction of the river current when coming downstream and rode against the current when going upstream.
time = distance/speed
Manuel has a boat that can move at a speed of 15 km/h
His downstream speed would be
15 + x
time spent coming downstream would be
140/(15 + x)
His downstream speed would be
15 - x
time spent going downstream would be
35/(15 - x)
Since the time is the same, then
140/(15 + x) = 35/(15 - x)
Crossmultiplying
140(15 - x) = 35(15 + x)
2100 - 140x = 525 + 35x
140x + 35x = 2100 - 525
175x = 1575
x = 1575/175
x = 9
Those quantities can't be compared. "Kg" is a unit of mass,
whereas "lb" is a unit of weight. You can't convert mass to
weight without knowing the acceleration of gravity in the place
where the mass is.
For example:
-- 75 kg of mass weighs 418 lb on Jupiter.
-- 75 kg of mass weighs 62.6 lb on Mars
-- 75 kg of mass weighs 27.4 lb on the Moon.
-- 75 kg of mass weighs 165.3 lb on Earth.
-- 75 kg of mass weighs 11.1 lb on Pluto.
It all depends where you take your 75 kg.
