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antoniya [11.8K]
3 years ago
8

How can I solve this square of binomial? (5d - 7d^2t)^2?

Mathematics
2 answers:
nydimaria [60]3 years ago
6 0
(5d - 7d^2t)^2=\\
25d^2-70d^3t+49d^4t^2
mezya [45]3 years ago
4 0
(5d - 7d^2t)^2->(a-b)^2=a^2-2ab+b^2 \\  \\ (5d - 7d^2t)^2 \\ =5d*5d - 2*5d*7d^2t+7d^2t*7d^2t \\ =25d^2-70d^3t+49d^4t^2
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3.
Sloan [31]

Answer:

  y = 6x +1

Step-by-step explanation:

To write the slope-intercept form equation for a line, you need to know the slope and the y-intercept. These can be found from their respective formulas.

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<h3>slope</h3>

The slope of a line between points (x1, y1) and (x2, y2) is given by the formula ...

  m = (y2 -y1)/(x2 -x1)

For points (-1, -5) and (0, 1), the slope is ...

  m = (1 -(-5))/(0 -(-1)) = 6/1

  m = 6

<h3>y-intercept</h3>

The y-intercept is the value of y where the line crosses the y-axis. That axis is where x = 0. There is a formula that can be used to find the y-intercept from the slope and a point on the line:

  b = y -mx . . . . . y-intercept of line with slope m through point (x, y)

However, one of the given points is already the y-intercept: (0, 1). It tells you b=1.

<h3>equation</h3>

The slope-intercept equation is ...

  y = mx +b

  y = 6x +1

8 0
2 years ago
Teddy buys a new television that was orignally priced $399 and on sale for %15 off. How much money did he save? What was the new
jekas [21]

Answer:

Teddy saved $59.85

The new price of the tv is $339.15

Step-by-step explanation:

To find out how much the new price of the tv is you need to do as follows:

We know that it was 15% off meaning it keeps 85% of its value. Knowing this we do

399*0.85

This gives us

339.15

To find out how much he saves, we find the difference:

399-339.15

Teddy saves:

59.85

6 0
2 years ago
Please help!!!!!!!!
Afina-wow [57]
Answer is C.

The sample is selected at tandon from the population, but it was done on a particular day of the week. So the sample is not random.

More data should be taken, distributed on every day of the week, probably in different months.
7 0
4 years ago
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A swing forward 50 degree and back 95 degree. How many degree forward must the swing go to return in starting position
-Dominant- [34]

Answer:

45°.........................

4 0
3 years ago
Kelly sells shoes at Lord and Taylor, She earns a salary of $250 per week, plus a commission of 4% of her total sales. She sold
NARA [144]
1,000 x 0.04 = 40
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That week she made $290
6 0
3 years ago
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