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3 years ago

How do I find QS here?

Mathematics

1 answer:

juin [17]3 years ago

4 0

Answer: 12.
To solve this problem, let's first solve for x. Thi is easiest done by figuring what QR is in terms of x using two equations, both from different lines.
In the first line: QR = 15 - 4x.
In the third line:QR = 13x - 1 - x = 12x - 1.
Now, we have to set these equations equal to each other. 15 - 4x = 12x - 115 = 16x - 116x = 16x = 1
Next, we take line three, 13x - 1, and substitute x as 1. The answer is 12.

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What is the factored form of 6n4 – 24n3 + 18n?

seropon [69]

Answer: Its factored form will be

$6n(n-1)(n^2-3n-3)$

Step-by-step explanation:

Since we have given that

$6n^4-24n^3+18n$

So, we need to factor ,

$6n(n^3-4n^2+3)$

Now,

$\text{Let }p(n)=n^3-4n^2+3$

Now, by hit and trial method, we put n=1,

$p(1)=1^3-4\times1^2+3=1-4+3=1-1=0$

$n=1\\n-1=0$

So, n-1 is also factor of p(n).

Now,

$\frac{n^3-4n^2+3}{n-1}=n^2-3n-3$

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8 0

3 years ago

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17. Let f(x) = 2x2 + 5x + 6 and g(x) = 3x2 + 4x – 10.<br> a Find f(x) + g(x)<br> b. Find f(x) – g(x)

nalin [4]

Step-by-step explanation:

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Combine like terms

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Distribute the negative

(2x^2 + 5x +6) + (-3x^2 -4x + 10)

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3 years ago

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A set of physics exam scores are normally distributed with a mean of 80 points and a standard deviation of 6

Anuta_ua [19.1K]

Answer:

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Step-by-step explanation:

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standard deviation (sd): 6 points
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z = (x - mean)/sd

z = (95 - 80)/6 = 2.5

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P(z < 2.5)

From the table attached:

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3 years ago

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il63 [147K]

Turn the information into coordinate points.

Point = (time, population)

Point 1 = (1985, 45000)
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Find the slope between these points using the formula

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3 years ago

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