Write the prime factorization of the number. (49 and 50)

Mathematics

1 answer:

gizmo_the_mogwai [7]3 years ago

8 0

50 = 25 * 2 = 5 * 5 * 2
44 = 22 * 2 = 11 * 2 * 2

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Meg rowed her boat upstream a distance of 12 mi and then rowed back to the starting point. The total time of the trip was 8 hour

nadya68 [22]

Answer:

3mph

Step-by-step explanation:

Boat speed x

current speed 2

against current x-2 mph

with current x+ 2 mph

Distance= 5 miles

Time against + time with = 6 hours

5 /( x + 2 ) + 5 /(x - 2 ) = 6

LCD = (x - 2 ) ( x + 2 )

5 *( x - 2 ) + 5 (x + 2 ) = 6

5 x - 10 + 5 x + 10 = 6 ( x ^2 - 4 )

10 x = 6 x ^2 - 24

6 x ^2 - -10 x - 24

Find the roots of the equation by quadratic formula

a= 6 , b= -10 , c= -24

b^2-4ac= 100 + 576

b^2-4ac=676

x1=(10+26)/12

x1=3

x2=(10-26)/12

x2= -1.33

Ignore negative value

Speed of boat is 3 mph

8 0

3 years ago

Paula bought a ski jacket on sale for $7 less than half its original price. She paid $84 for the jacket. What was the original p

Eddi Din [679]

1/2x - 7 = 84
1/2x = 84 + 7
1/2x = 91
x = 91 / (1/2)
x = 91 * 2
x = 182 <=== original price

5 0

3 years ago

Can someone please help me asap !!!

vredina [299]

For this case what you should be aware of is that the root does not take negative values.
We then have to be aware of the domain of the function.
Note: see attached graphic.
Ansewer
the domain of the graph is all real number less than or equal to 0
option 3