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Liono4ka [1.6K]
3 years ago
13

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Mathematics
1 answer:
lilavasa [31]3 years ago
4 0

Answer:???????????

Step-by-step explanation:

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(a^(2) - 25)x = 3a + 15<br> solve for a
trasher [3.6K]

Answer:

Idk I think it is 6....but I could be wrong.

3 0
3 years ago
Read 2 more answers
Pioneer company has given an aptitude test to 71 potential job applicants. The test score had an average of 81 and a standard de
Agata [3.3K]

Answer:

Follows are the solution to the given points:

Step-by-step explanation:

In point A:

\to df = n - 1 = 71-1= 70

In point B:

\to t = \frac{(x -X)}{s} = \frac{(93-81)}{8} = \frac{12}{8}= 1.5

In point C:

For df = 70, the top 5% critical t score

tcrit = 1.666914479

Thus,

\to 1.666914479 = \frac{(x - 81)}{8}\\\\\to 1.666914479 \times 8 = (x - 81)\\\\\to  13.335315832 = (x - 81)\\\\\to  13.335315832 +81 =x \\\\\to x= 94.335315832

In point D:

For df = 70, the top 5% critical t score

tcrit = -1.666914479

\to -1.666914479 = \frac{(x - 81)}{8}\\\\\to -1.666914479 \times 8= (x - 81)\\\\\to -13.335315832= (x - 81)\\\\\to -13.335315832+81 = x \\\\\to x = 67.664684168\\\\

In point E:

The lower cutoff is 0.10 in the center, which would be around 80 %. The critical point therefore is

tcrit = -1.293762898

\to -1.293762898 = \frac{(x-81)}{8}\\\\\to -1.293762898 \times 8= (x-81) \\\\\to -1.293762898 \times 8= (x-81) \\\\\to -10.350103184=x-81\\\\\to -10.350103184+81=x\\\\\to x=70.649896816

In point F:

The lower cutoff is 0.90 in the center, which would be around 80 %. The critical point therefore is

tcrit = 1.293762898

\to 1.293762898 = \frac{(x-81)}{8}\\\\\to 1.293762898 \times 8= x-81\\\\\to 10.350103184 =x-81\\\\\to 10.350103184 +81=x\\\\\to x = 91.350103184\\

5 0
3 years ago
Which expression is equivalent to (16x^8y^-12)^1/2
MAVERICK [17]

Answer:

The equivalent expression is \Rightarrow \dfrac{4x^4}{y^6}

Step-by-step explanation:

Given: (16x^8y^{-12})^{1/2}

We need to simplify the expression. We will distribute radical with each term inside the parentheses.

\Rightarrow (16x^8y^{-12})^{1/2}

Distribute the radical

\Rightarrow 16^{1/2}\cdot x^{8\cdot 1/2\cdot y^{-12\cdot 1/2}

\Rightarrow 4\cdot x^4\cdot y^{-6}

\Rightarrow 4x^4y^{-6}

Now we will simplify the negative exponent.

\Rightarrow \dfrac{4x^4}{y^6}

Hence, The equivalent expression is \Rightarrow \dfrac{4x^4}{y^6}

8 0
3 years ago
What would be the radius of a circle with a diameter of 8 inches?
sukhopar [10]
Since radius of a circle is half of the diameter of the circle
so the radius is 4 inches
and 1 inch=2.54 cm so radius=10.16cm
5 0
3 years ago
Four more than three times a number is thirteen
ryzh [129]

Answer:

3x+4=13

Step-by-step explanation:

7 0
3 years ago
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