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AleksandrR [38]
3 years ago
5

What two prime numbers equal 85

Mathematics
2 answers:
fgiga [73]3 years ago
8 0
1 + 85 = 85...............
hram777 [196]3 years ago
7 0
One and eighty five. 1x85=85 but 85 isnt prime>>>

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Howie sorkin can travel 8 miles upstream in the same time it takes him to go 12 miles downstream. His boat goes 15 mph in still
lozanna [386]

Answer: the speed of the current is 2.5 mph

Step-by-step explanation:

Let the speed of the boat be x miles per hour

Let the speed of the current be y miles per hour

Speed = distance / time

Time = distance/speed

If the boat goes 12miles downstream(in still water) at 15 mph then, the time is

12/ 15 = 0.8 hours

In still water, it means that it moved in the same direction with the current.

The total speed would be x + y. Therefore

x + y = 15 - - - - - - -1

If the boat goes 8 miles upstream in 0.8 hours, the the speed is

8/ 0.8 = 10 miles per hour

Assuming it moved in the opposite direction to the current.

The total speed would be x -y. Therefore

x - y = 10 - - - - - - -2

Adding equation 1 and equation 2, it becomes

2x = 25

x = 25/2 = 12.5

y = 15 - x

y = 15 - 12.5 = 2.5 miles per hour

8 0
3 years ago
This is just for fun, but I still need to figure this out
Vilka [71]

Answer:

Let them defrost first, then heat them up for a couple of minutes in the toaster.

Step-by-step explanation:

7 0
3 years ago
Given f(x)=x-8 find f(1)+10
Ronch [10]

Answer:

3

Step-by-step explanation:

replace all x variables with 1 and solve that equation ; f(x)=x-8 so.... f(x) = 1-8

there for f(1)=-7

now, add -7 and 10 for your answer:

f(1)+10= 3

6 0
3 years ago
What is 2/3 times 4/5 as a decimal!
Nitella [24]
Hey there,

Your correct answer to \frac{2}{3}×\frac{4}{5} as a decimal would be 0.53

Your correct answer would be \boxed{0.53}

Hope this helps

~Jurgen
5 0
3 years ago
Read 2 more answers
For what value of a does (1/9)a+1 =81a+1 272-a?
AlexFokin [52]

Answer:

-4

Step-by-step explanation:

\left( \dfrac{1}{9}\right)^{a+1}= 81^{a+1}\cdot 27^{2-a}\\\\\\(3^{-2})^{a+1}=(3^4)^{a+1}\cdot (3^3)^{2-a} \\\\\\3^{-2a-2}=3^{4a+4}\cdot 3^{6-3a} \\\\\\3^{-2a-2}=3^{a+10} \\\\\\-2a-2=a+10 \\\\\\-3a=12 \\\\\\a=-4

Hope this helps!

8 0
3 years ago
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