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Anna11 [10]
3 years ago
10

Can somebody do this without a calculator please?

Mathematics
1 answer:
zavuch27 [327]3 years ago
3 0
\frac{1}{f} = \frac{1}{u} + \frac{1}{v}
multiply f to the entire equation
1= \frac{f}{u}+\frac{f}{v}
add up right side

1=\frac{fv}{uv} +\frac{fu}{uv}
1= \frac{fv+fu}{uv}



multiply uv to both sides
uv= fv+fu
factor out f
uv= f(v+u)
divide (v+u) to both sides
\frac{uv}{v+u}=f

substitute in u=3.5cm and v=-4 cm
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Write a system of two equations in two variables where one equation is quadratic and the other is linear such that the system ha
PilotLPTM [1.2K]

Answer:

This system has no solution:

y = x²

y = 0 · x - 1

Step-by-step explanation:

Hi there!

I propose these two equations:

y = x²

y = 0 · x - 1

This system has no solution because in the quadratic function "y" is always positive for every value of "x", while in the linear function "y" is always -1 for every value of "x". Then, there will not be a pair (x,y) shared by both functions.

In other words, there is no value of "x" that satisfies this expression:

x² = 0 · x - 1

In the attached graphic, you can see that both curves never touch (in red is the quadratic function and in blue is the linear function), hence, the system has no solution.

Have a nice day!

4 0
4 years ago
Order the following from least to greatest.<br>1/16<br>.0173<br>1/7<br>2.2<br>-0.25​
Dovator [93]

Answer:

1.-0.25     2..0173   3. .1/16    4. 1/7     5.2.2

Step-by-step explanation:

You want to put all numbers in fractions to see which numbers are smallest

5 0
3 years ago
Les is measuring the border of her bulletin
borishaifa [10]

Answer:

Perimeter of the board

Step-by-step explanation:

That measurement of "the border of her bulletin board" is actually the perimeter of the board.

7 0
3 years ago
If 14 people show up to a cookout and you make 21 hot dogs, how many will you need to make if 105 people up? plz help
Rus_ich [418]

158 hot dogs will be prepared if 105 people show up

Step-by-step explanation:

14 people show up to make 21 hot dogs

We need to find how many hot dogs will be prepared if 105 people show up?

We will solve this problem using Unitary method

Solving:

14 people make hot dogs=21

1 person makes hot dogs = 21/14

105 people make hot dogs = 21/14*105

                                             = 157.5 ≈ 158 hot dogs

So, 158 hot dogs will be prepared if 105 people show up

Keywords: Word Problems

Learn more about Word Problems at:

  • brainly.com/question/10978510
  • brainly.com/question/11007026
  • brainly.com/question/8301701

#learnwithBrainly

6 0
4 years ago
on a 100 pt math quiz 36 points can be earned by correctly completing division problems. how many points can be earned by comple
Tresset [83]
The answer is 64( this was kinda easy)
7 0
3 years ago
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