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1 year ago

Someone help please!!!!

Mathematics

1 answer:

LUCKY_DIMON [66]1 year ago

5 0

Answer:

x = -2

TU = 4

UB = 2

Step-by-step explanation:

you can add x^2 with 4x+10 and equate it to 6:

x^2 + 4x + 10 = 6

x^2 + 4x + 4

then u can use the roots formula : x = (-b ± √ (b2 - 4ac) )/2a

so it'll be x = {-4±[√16 - 4(4)]}/2

x= -2

then u can substitute it and find TU and UB

TU= (-2)^2 = 4

UB= 4(-2)+10 = 2

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Answer:

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One number is six times another number. Their difference is 35. What are the two numbers?

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x - y = 35
x = 6y
Plug 6y in for x in the first equation.
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2 years ago

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A + (b-4) when a-24 and b-7

lara31 [8.8K]

Answer:

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2 years ago

Determine the average speed of the current in a river if a boat moves at 20 miles/hour in still water and takes 3 hours to trave

Taya2010 [7]

The speed of the current in a river is 6 miles per hour

Solution:

Given that,

Speed of boat in still water = 20 miles per hour

Time taken = 3 hours

Distance downstream = 78 miles

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If the speed of a boat in still water is u km/hr and the speed of the stream is v km/hr, then:

Speed downstream = (u + v) km/hr

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Therefore, speed downstream is given as:

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We know that,

Speed downstream = (u + v)

26 = 20 + v

v = 26 - 20

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Thus speed of the current in a river is 6 miles per hour

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3 years ago