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enot [183]
2 years ago
13

Factor the expression. 35g^2 – 2gh – 24h^2

Mathematics
1 answer:
stiks02 [169]2 years ago
3 0

Option C: (7 g-6 h)(5 g+4 h) is the correct answer.

Explanation:

The given expression is 35 g^{2}-2 g h-24 h^{2}

We need to determine the factor of the expression.

Now, let us break the given expression into two groups.

Hence, we get,

35 g^{2}+28 g h-30 g h-24 h^{2}

Simplifying, we get,

\left(35 g^{2}+28 g h\right)+\left(-30 g h-24 h^{2}\right)

Let us factor out 7g from the term \left(35 g^{2}+28 g h\right)

Hence, we have,

7 g(5 g+4 h)+\left(-30 g h-24 h^{2}\right)

Similarly, let us factor out -6h from the term \left(-30 g h-24 h^{2}\right)

Thus, we have,

7 g(5 g+4 h)-6 h(5 g+4 h)

Now, we shall factor out the term 5g+4h , we get,

(7 g-6 h)(5 g+4 h)

Thus, the factorization of the given expression is (7 g-6 h)(5 g+4 h)

Therefore, Option C is the correct answer.

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Are the directions asking you to solve these ?
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Three married couples go to a movie theater. if they sit together in a row of 6 empty seats, find the probability that each woma
Ganezh [65]

Given are three married couples.

So, let us assume there are 3 men and 3 women

They are sitting in a row of 6 empty seats

There is a definite order constraint that each woman will sit left to her husband. The first woman gets 3 options to choose from 3 available seats. The second woman has two options left as already one seat is filled by the first woman. The last woman has one option left. So, it is 3*2*1

So, number of ways is 3! = 3*2*1 = 6 ways.

5 0
3 years ago
Help with matrices please? Any wrong/not applicable answers will be reported and BLOCKED
marin [14]

m x H = \left[\begin{array}{ccc}-25&37.5&-12.5\\\9\end{array}\right]

Step-by-step explanation:

Step 1; Multiply 5 with this matrix  \left[\begin{array}{ccc}-1&2\\4&8\\\end{array}\right] and we get a matrix \left[\begin{array}{ccc}-5&10\\20&40\\\end{array}\right]

Multiply the fraction  \frac{2}{5} with the matrix  \left[\begin{array}{ccc}-1&2\\4&8\\\end{array}\right] and we get \left[\begin{array}{ccc}-\frac{2m}{5} &\frac{4m}{5} \\\frac{8m}{5} &\frac{16m}{5} \\\end{array}\right]

Step2; Now equate corresponding values of the matrices with each other.

-5 = \frac{-2m}{5} and so on. By equating we get the value of m as \frac{25}{2}

Step 3; Add the matrices to get the value of matrix m.

Adding the three matrices on the RHS we get  \left[\begin{array}{ccc}2&9&-9\\\end{array}\right].

Step 4; Adding the matrices on the LHS we get the resulting matrix as H +

\left[\begin{array}{ccc}4&6&-8\\\9\end{array}\right]. Equating the matrices from step 3 and 4 we get the value of H as \left[\begin{array}{ccc}-2&3&-1\\\9\end{array}\right]

Step 5; Now to find the value of m x H we need to multiply the value of \frac{25}{2} with the matrix \left[\begin{array}{ccc}-2&3&-1\\\9\end{array}\right]

Step 6; Multiplying we get the matrix m x H = [ -25  \frac{75}{2}  \frac{-25}{2} ]

8 0
2 years ago
What is 5+x^2=2x^2+13?
pshichka [43]
Take the root of both sides, and solve.

x = 2i sqrt 2, -2i sqrt 2.
4 0
2 years ago
I already made an attempt at this question and I would just like to check my answer z = ?
Salsk061 [2.6K]

So we have the equation:

\frac{z+9}{4}=2.1

Then we need to multiply by 4 on both sides to get rid of the denominator on the left:

z+9=8.4

Then we subtract 9 on both sides to solve for z:

z=-0.6

Therefore the answer is z = -0.6.

5 0
3 years ago
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