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GrogVix [38]
2 years ago
9

Help please.............................................

Mathematics
2 answers:
frozen [14]2 years ago
8 0

Answer:

Second option

( - 7x + 4)( - 7x - 4)

Step-by-step explanation:

If you multiply it out you get:

49 {x}^{2}  + ( - 7x \times - 4)   + ( - 7x  \times  4)- 16

The two middle terms cancel out because of the sign difference of the two fours.

Result:

49 {x}^{2}  - 16

Difference of squares. If the two multiplied brackets look exactly the same except for a sign difference in one of the terms (4 in this case) it is difference of squares.

BaLLatris [955]2 years ago
5 0

Answer:

B.

Step-by-step explanation:

(-7x + 4)(-7x - 4)

= 49x^2 - 28x + 28x - 16

= 49x^2 - 16.

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<img src="https://tex.z-dn.net/?f=%28%2B%5Cfrac%7B3%7D%7B8%7D%20%29%20%2B%28-%5Cfrac%7B5%7D%7B6%7D%20%29%20%2A%20%28%5Cfrac%7B3%
lord [1]

Answer:

(+\frac{3}{8}) + (-\frac{5}{6}) * (\frac{3}{2}) / \frac{7}{4} = [tex]\frac{-19}{56}

Step-by-step explanation:

(+\frac{3}{8}) + (-\frac{5}{6}) * (\frac{3}{2}) / \frac{7}{4} =\\\\(-\frac{5}{6}) * (\frac{3}{2}) = -\frac{5}{4} \\-\frac{5}{4} / \frac{7}{4} = -\frac{5}{4} * \frac{4}{7} = -\frac{5}{7} \\+\frac{3}{8}  + (-\frac{5}{7}) = \frac{+21 -40}{56}  = \frac{-19}{56} \\

5 0
3 years ago
Read 2 more answers
PLS HELP IM DESPERATE
katovenus [111]

Answer:

24 square units

Step-by-step explanation:

The area of a parallelogram is given by the formula ...

A = bh

where A represents the area, b the length of the "base", and h the "height" measured at right angles to the base.

Here, it is convenient to use one vertical side of the figure as the base. You can count the grid squares to see that it is 8 units long.

The height is then the distance from one vertical side to the other. Again, you can count the grid squares to see that it is 3 units.

The area is the product of these dimensions:

A = (8 units)·(3 units) = 24 units^2

5 0
3 years ago
I need help with my math, please help
storchak [24]

Answer:

x ≤6

Step-by-step explanation:

no more than means you can have 6 or less

x ≤6

4 0
2 years ago
Read 2 more answers
What does this mean 7 4 8 9 12 45
ohaa [14]

Answer:

The mean is 14.167

Step-by-step explanation:

In order to find the mean, you must add all of the numbers together and then divide by the number of inputs.

(7 + 4 + 8 + 9 + 12 + 45)/6

85/6

14.167

8 0
3 years ago
You have 2.5 pounds of egg whites.
Rufina [12.5K]

Answer:

15

Step-by-step explanation:

38/2.5=15.2

Round it to 15

4 0
3 years ago
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