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shtirl [24]
3 years ago
5

40 percent of what is 34?

Mathematics
2 answers:
fenix001 [56]3 years ago
8 0

Answer: 85

Step-by-step explanation:

We’ll use Y and Z for variables.

Formula: Y = Z * 100

X X = 40% & Z = 34

34 x 100

40

Then do 34 X 10/40 And that will equal 85.

So Y= 85

nirvana33 [79]3 years ago
3 0

Answer:

13.6

Step-by-step explanation:

so first what i do is i put 40 over 100. then i take 34 and put it over n. finally i cross multiply. 100 times 34 is 3400 then i divide it by 40 to get 13.6.

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bekas [8.4K]

Answer:

Ummm the first on I think

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3 years ago
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Which power does this expression simplify to?<br> [(7)(7)<br> 1<br> - -<br> ооо<br> 74<br> O
Paha777 [63]

Step-by-step explanation:

Answer is in attached image...

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6 0
3 years ago
to start to solve the system of equations below, which number would you multiply in the equation -2x-5y=-1? The two equations ar
Leviafan [203]

Answer:

  The first equation can be multiplied by 2.

Step-by-step explanation:

The x-coefficients are -2 and 4. If the first one of these is multiplied by 2, it will be the opposite of the second of these. That is 2·(-2) = -4. When -4 and 4 are added, the result is 0, so the x-variable will be eliminated.

To solve these equations by "elimination", you look for simple relationships between the coefficients that will let you combine them to get zero.

_____

Here's the rest of the solution.

  2(-2x-5y) +(4x+2y) = 2(-1) +(8) . . . . after multiplying the first equation by 2 and adding the second equation

  -4x -10y +4x +2y = -2 +8 . . . . . the result of eliminating parentheses

  -8y = 6 . . . . . the result of collecting terms

  y = -6/8 = -3/4 . . . . divide by the y-coefficient

Since all of the coefficients in the second equation are even, a factor of 2 can be removed, and the equation written as ...

   2x +y = 4

This can be solved for x, so you have ...

  x = (4 -y)/2 = 2 -(y/2)

Filling in the above value of y, we find x to be ...

  x = 2 -(-3/4)/2

  x = 2 3/8

_____

<em>Comment on eliminating y instead of x</em>

If you divide the second equation by 2 so that y has a coefficient of 1, then you can multiply this equation by 5 to give y a coefficient that is the opposite of the coefficient -5 in the first equation. Then the elimination looks like

  (-2x -5y) +5(2x +y) = (-1) +5(4)

  -2x -5y +10x +5y = -1 +20 . . . . eliminate parentheses

  8x = 19 . . . . simplify

  x = 19/8 = 2 3/8 . . . . divide by the coefficient of x

5 0
3 years ago
What is the right answer for 9i x 2i?
nevsk [136]
The correct answer is:   -18 .
________________________________________

 9i * 2i = 18 i² .
________________________________________
  " i " is an imaginary number equal to "√(-1) " .
  
  " i² " = [√(-1)] ² = √(-1) * √(-1) = -1 .
________________________________________
   18 * i²  = 18 * -1  =  -18 .
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3 0
3 years ago
Which of the following is an x-intercept of the graph of the function shown below?
DaniilM [7]

Answer: Second option.

Step-by-step explanation:

By defintion, a Quadratic function is a polynomial of degree 2 and it has the following form:

f(x)=ax^2+bx+c

Therefore, the function given is Quadratic. This is:

f(x)=x^2 + 6x +9

The steps to find the roots (or the x-intercepts) of the function, are:

1. You must substitute f(x)=0:

0=x^2 + 6x +9

2. Now, you can factor the Quadratic equation. Choose two numbers whose sum is 6 and whose product is 9. Notice that:

3+3=6\\3*3=9

Therefore,  you will get a "Double root".

4. So the solution is:

(x+3)^2=0\\\\x=-3

8 0
3 years ago
Read 2 more answers
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