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3 years ago

Use the Distributive Property to expand this expression.

Mathematics

2 answers:

viktelen [127]3 years ago

8 0

Answer:

C is the correct answer

Step-by-step explanation:

NemiM [27]3 years ago

3 0

C is correct -6.4z-3.4xz

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What is the area of a triangle with vertices (3,0) (9,0) (7,6)

Nezavi [6.7K]

Answer:

The area of the triangle is of 21 units of area.

Step-by-step explanation:

The area of a triangle with three vertices $(x_1,y_1),(x_2,y_2),(x_3,y_3)$ is given by the determinant of the following matrix:

$A = \pm 0.5 \left|\begin{array}{ccc}x_1&y_1&1\\x_2&y_2&1\\1_3&y_3&1\end{array}\right|$

In this question:

Vertices (3,0) (9,0) (7,6). So

$A = \pm 0.5 \left|\begin{array}{ccc}3&0&1\\9&0&1\\7&7&1\end{array}\right|$

$A = \pm 0.5(3*0*1+0*1*7+1*9*7-0*7*1-0*9*1-3*1*7)$

$A = \pm 0.5*(63-21)$

$A = \pm 0.5*42 = 21$

The area of the triangle is of 21 units of area.

5 0

2 years ago

Solve Ax + By = -C for x. Ox=-By-C А x=-By+C Ox=By=0

dimulka [17.4K]

Answer:

$\textbf{Option 1}\\$

Step-by-step explanation:

$\textup{Given $ Ax + By = -C$}\\\textup{Subtracting $By$ on both sides, we get,}\\$ Ax = -C -By $\\$

$\textup{Dividing by $A$ on both sides, (Assuming $A$ is not equal to zero) we get }\\$$ x = \frac{-By -C}{A}$$$

3 0

3 years ago

Whats 1+2+3+4+5 add them together pls

ahrayia [7]

Answer:

*ignore this answers have to be a minimum of 20 characters.

6 0

3 years ago

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What is the y-intercept, b, of the additive relationship represented by this table?

mina [271]

Answer:

b = 3

Step-by-step explanation:

Use the table to find the slope and y-intercept

Find the slope:

m = (6 - 4)/(3 - 1) = 2/2 = 1

Find b using the pair (1, 4):

4 = 1*1 + b
b = 4 - 1
b = 3

The line is:

y = x + 3

The y-intercept is 3

8 0

3 years ago

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Kiana walks from her house to Jo's house. She first walks west then walks south. How many blocks west does Kiana walk? How many

Gnoma [55]

Answer:

She goes from 4 to -4 west which is 8 blocks west

Then she goes south from +2 to -2 on the y axis which is 4 blocks south

4 0

3 years ago