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3 years ago

7

Write these portions as percents.

2 answers:

Black_prince [1.1K]3 years ago

7 0

A) 36%
B) 8%
C) 1.7%
D) 110%

VLD [36.1K]3 years ago

5 0

36%
0.8%
0.17%
11%
It's a rough answer but I can say i learned it in school and that's what I remember

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The equation 2x + 4k − 9 = kx − k + 1 is really a family of equations, because for each value of k, we get a different equation

Olegator [25]

You haven't shared "the given value of x," or, if you have, you haven't drawn attention to it.

Just suppose we were to choose x = 4 as a possible solution and then try to find a value of the parameter k that would make x = 4 an actual solution.

2(4) + 4k - 9 = (4)(4) - (4) + 1

Then 8 + 4k - 9 = 16 - 4 + 1, or 4k - 1 = 13. Then 4k = 14, and k = 14/4, or (after reduction) k = 7/2

If the parameter k equals 7/2, then x = 4 is a solution to the given equation.

To check this out further, start with the proposed solution x = 5 and find k.

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4 years ago

select whether the equation has a solution or not, square root x-2- square root 2x= square root x+2 (a. roots b. no roots)

Agata [3.3K]

The equation is $\sqrt{x-2 \\ \\$ - $\sqrt{2x}$ = $\sqrt{x +2}$

Solution

<u>Step 1:</u>

Take square on both sides, we get

3x - 2 $\sqrt{x-2}$ $\sqrt2{x}$ -2 = x +2

<u>Step 2:</u>

Subtract 3x - 2 from both sides, we get

-2 $\sqrt{x-2} \sqrt{2x} = -2x + 4$

<u>Step 3:</u>

Again, square on both sides in order to get rid of the square root from the above equation, we get

$8x^{2}-16x = 4x^{2} -16x +16$

Now we have to simplify it,

$4x^{2} -16 = 0$

<u>Step 4:</u>

Now we have to solve this quadratic equation, in order to get the solution.

We get x = 2 and x = -2, When we verifying solution in the original given equation, the solution does not satisfy the equation.

Reason: We get negative number in the square root.

Therefore, it has no Roots.

<em>Answer: b) No roots</em>

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3 years ago

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Hunter-Best [27]

Answer:

by dividing 325 by 48.

The answer comes out to 6.77

But since the number of buses must be a whole number, we will need 7 buses to carry the 325 students and teachers on a field trip.

so the answer is 7 buses

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3 years ago

Given the parent function f(x) = x^2 describe the graph of y = (x-5) ^2 -2

Fiesta28 [93]

Answer:

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Step-by-step explanation:

its right 5 because, if it is in a parenthesis, it will become the opposite. if it out of the parenthsis it would stay the same.

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4 years ago