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EleoNora [17]
4 years ago
8

1. Consider ihe following functions:

Mathematics
1 answer:
Bas_tet [7]4 years ago
6 0

Answer:

Step-by-step explanation:

1) f(x) =0   : x² +9 =0    means  x² = -9      ..no solutions in R

2)g(x) =0 : (x-9)² =0   means  x-9= 0    ..... single solution : 9

3) h(x)=0 : (x+1)² - 9 = 0 means (x+1)² = 3²   so x+1=3 or x+1 = -3

two solutions : 2 and -4

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jekas [21]

Answer:

for the first one y would be zero

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4 0
3 years ago
If r(x) = 3x - 1 and s(x) = 2x + 1, which expression is equivalent to<br> (6)?
lidiya [134]

Answer: It would be all of the above.

Step-by-step explanation:

8 0
3 years ago
‼️Please help me ASAP ‼️
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3 years ago
a motorboat traveling with a current can go 160km in 4 hours. against the current it takes 5 hours to go the same distance. find
irakobra [83]

The speed of motorboat is 36 kmph and speed of current is 4 kmph.

Step-by-step explanation:

Distance covered in 4 hours = 160 km

Time took on return trip = 5 hours

Let,

x represent the speed of boat.

y represent the speed of current.

Combined speed of boat and current when in same direction = x+y

Speed of boat and current when travelling against = x-y

Distance = Speed * Time

Speed = \frac{Distance}{Time}

x+y = \frac{160}{4}

x+y = 40     Eqn 1

x-y =  \frac{160}{5}

x-y = 32      Eqn 2

Adding Eqn 1 and Eqn 2

(x+y)+(x-y)=40+32\\x+y+x-y=72\\2x=72

Dividing both sides by 2

\frac{2x}{2}=\frac{72}{2}\\x=36

Putting x=36 in Eqn 1

36+y=40\\y=40-36\\y=4

The speed of motorboat is 36 kmph and speed of current is 4 kmph.

Keywords: linear equation, addition

Learn more about linear equations at:

  • brainly.com/question/1087090
  • brainly.com/question/1096947

#LearnwithBrainly

8 0
3 years ago
What is a number between 364 and 384 that is a multiple of both 3 and 7
masya89 [10]

Answer:

378

Step-by-step explanation:

It will also be a multiple of 21 .

As it is divisible by 3  the first possibility is 366 so:-

364 + n = 21m

where n = 2,5,8,11,14...

Trying each number in turn we get:-

364 + 14 = 21m

21m = 378

m =  18

so the answer is 378



7 0
4 years ago
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