7 times the difference of a number and 3.2 is 8.4.
Answers
(x-3.2) is what we have so far.
then we multiply it by 7
so 7(x-3.2)=8.4
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Over twenty years, it was found that the number of doctors of medicine, MD (in thousands), in the United States can be approximated by MD=(28,390+693t)/(85-t) where t=0 represents 1980. The number of doctors of osteopathy, DO (in thousands), can be approximated by DO=(776-12t)/(65-2t) .Write an expression for the total number I of doctors of medicine (MD) and doctors of osteopathy (DO). Simplify the result. How many MDs did the United States have in 2010? How many MDs did the United States have in 2010?
Answers
p1 can paint hours in 10 hours, so 1/10 house per 1 hour
p2 can paint house in 6 hours so 1/6 house per 1 hour
if both start at 8:00, when finish??
find how many hours they take
1 hour=p1+p2=1/10+1/6
just add 1/10 and 1/6 and see how many to get 1/1 house done
1/10+1/6=3/30+5/30=8/30=4/15
xhours times 4/15=1
multiply both sides by 15/4 to clear fraction
xhours =15/4
xhours=3 and 3/4
they take 3 and 3/4 hours aka 3 hours and 45 mins so
8:00+3:45=11:45
they finish at 11:45 AM
Answers
FV = $400, PV = $220, i = 3% = 0.03
400 = 220 * ( 1 + 0.03 ) ^t
( 1 + 0.03 ) ^t = 400 : 220 = 1.818181
t = log ( 1.03 ) 1.81818
t = 20
After 20 years his investment will reach at least $400.
Answer:
t=20
Step-by-step explanation:
washes cars at a faster rate?
Answers
Answer:
Ito
Step-by-step explanation:
Make them to their closest common multiple which is twelve.
Next times 7 by 4 as 3*(4) is 12
Then time 9 by 3 as 3*(4) is 12
7*4=28
9*3=27
Therefore ito washes at a faster rate
Answer:
ITO
Step-by-step explanation:
ITO
He can wash 7 cars in 3 hours.
a) 3 x 60 min = 180 minutes
b) 180\7 = 25.71 minutes per car
JOAN
She can wash 9 cars in 4 hours
a) 4 x 60 = 240 minutes
b) 240\9 = 26.66 minutes per car
Answers
Answers
After solving the equation, the value obtained for w will be equal to 2.
What are arithmetic Operations?
The four fundamental operations of arithmetic are addition, subtraction, multiplication, and division of two or even more items.
Included in them is the study of integers, especially the order of operations, which is important for all other areas of mathematics, notably algebra, data management, and geometry.
As per the data in the question,
The equation given in the question,
w + 1/2 = 1/4w + 2
Add similar terms,
w - 1/4w = 2 - 1/2
(4w - w)/4 = (4 - 1)/2
3w/4 = 3/2
w = 12/6
w = 2
To know more about arithmetic operations:
#SPJ2
Answer:
w = 2
Step-by-step explanation:
Answers
Diameter = 5 cm
which means,
Radius=
and Height = 2 cm
We can assume that the shape is cylindrical
Formula of the Surface Area of a Cylinder
=2
=2
=12.5
=22.5
=70.69 cm² ≈ 70.7 cm²