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melisa1 [442]
3 years ago
14

How would u factorise these?!?

Mathematics
2 answers:
jok3333 [9.3K]3 years ago
5 0
X² + 7x = x(x + 7)

p² + p = p(p + 1)

24r - 16 = 4(6r - 4)
Tcecarenko [31]3 years ago
3 0
You can pull out a greatest common factor (GCF).
1. GCF: x
2. GCF: p
3. GCF: 8
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If the equation 5(3x + 7) – 1 = 3(52 + k) + 4 has infinitely many solutions, what is the value of k?
spin [16.1K]

Answer:

k = 5x - 42

Step-by-step explanation:

8 0
2 years ago
What is 3.106 x 10 in the 6th power written in standard form
Nitella [24]
Think about moving the decimal to the right 6 times. so I believe your answer is 3106000.
7 0
3 years ago
Solve the system by using a matrix equation
Sergeu [11.5K]

Answer:

Option A is correct (17,11).

Step-by-step explanation:

6x - 9y = 3

3x - 4y =7

it can be represented in matrix form as\left[\begin{array}{cc}6&-9\\3&4\end{array}\right] \left[\begin{array}{c}x\\y\end{array}\right] = \left[\begin{array}{c}3\\7\end{array}\right]

A= \left[\begin{array}{cc}6&-9\\3&4\end{array}\right]

X= \left[\begin{array}{c}x\\y\end{array}\right]

B= \left[\begin{array}{c}3\\7\end{array}\right]

i.e, AX=B

or X= A⁻¹ B

A⁻¹ = 1/|A| * Adj A

determinant of A = |A|= (6*-4) - (-9*3)

                                    = (-24)-(-27)

                                    = (-24) + 27 = 3

so, |A| = 3

Adj A=  \left[\begin{array}{cc}-4&9\\-3&6\end{array}\right]

A⁻¹ =  \left[\begin{array}{cc}-4&9\\-3&6\end{array}\right]/3

A⁻¹ =  \left[\begin{array}{cc}-4/3&3\\-1&2\end{array}\right]

X= A⁻¹ B

X=  \left[\begin{array}{cc}-4/3&3\\-1&2\end{array}\right] *\left[\begin{array}{c}3\\7\end{array}\right]

X= \left[\begin{array}{c}(-4/3*3) + (3*7)\\(-1*3) + (2*7)\end{array}\right]

X= \left[\begin{array}{c}-4+21\\-3+14\end{array}\right]

X= \left[\begin{array}{c}17\\11\end{array}\right]

x= 17, y= 11

solution set= (17,11).

6 0
3 years ago
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A line contains the points<br> ( - 2, – 8) and (3,5).<br> What is the slope of the line?
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Step-by-step explanation:

8 0
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Show steps on how to solve 5980/25
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Step-by-step explanation:

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8 0
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