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3 years ago

The outlier, 78, is removed from the data set shown.

Mathematics

2 answers:

Rasek [7]3 years ago

5 0

Im 98% sure that the answer is D

jeyben [28]3 years ago

3 0

The range is decreased by 33.

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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

Step 1:

Take square on both sides, we get

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

Step 2:

Subtract 3x - 2 from both sides, we get

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

Step 3:

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,

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

Step 4:

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.

Answer: b) No roots

5 0

3 years ago

Help math problem please

3241004551 [841]

What you would do is 1/4+1/4=1/2. Then since we know Brookfield to Oakdale is 2/3, do 2/3-1/2. To do this we find common denominators, then do 4/6-3/6 to is get an answer of 1/6 mile. Tell me if this is correct.

7 0

3 years ago

Simplify: |4.2 – 6.8| + (2.4 + 7.2)

SpyIntel [72]

Answer:

$|4.2 - 6.8| + (2.4 + 7.2)$

$= | - 2.6| + 9.6$

$= 2.6 + 9.6$

$= 12.2$

8 0

4 years ago

What is the standard form of five and three hundred fifty two thousands

suter [353]

The number "seven hundred and four thousand, six hundred and twenty" is written as 704,620 in numeric or standard form. In converting a number expressed in words to numerals, it is important to write each digit in its proper place value.

7 0

3 years ago

7.8 is 65% of what number

Natalka [10]

7.8 = 0.65x

x = 100/65 * 78/10

x = 10/5 * 6

x = 12

3 0

4 years ago