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geniusboy [140]
3 years ago
8

Pick a two-digit number greater than 25. Rewrite your two-digit number as a difference of two numbers. Show how to use the ident

ity below to square your number without using a calculator.
(x-y)^(2 )=x^(2 )-2xy+y^2
CHOOSE ONE value, A, B, or C to use for the following:
A) 47 B) 32 C) 53

Rewrite your 2-digit number as a difference of 2 numbers:
_________________________________

Use the identity above to square your number without using a calculator:
Mathematics
1 answer:
e-lub [12.9K]3 years ago
3 0

Answer:

Step-by-step explanation:

32²=(40-8)²

=40²-2(40)(8)+8²

=1600-640+64

=1664-640

=1024

also 32²=1024

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Andreas93 [3]

Answer:

48 bcoz u do 4(3)+5 do f(g) than for f(17) u do 3(17)-3

6 0
3 years ago
A line with a slope of 2 passes through (3,9). Which choice is an equation of this line?
Veronika [31]

Answer:

The answer to your question is number 3.

Step-by-step explanation:

Data

slope = m = 2

Point = (3, 9)

Process

1.- Write the equation of the line in the form point-slope

               y - y1 = m(x - x1)

2.- Identify the values of x1 and y1

        x1 = 3   y1 = 9

3.- Substitution

               y - 9 = 2(x - 3)

4.- Simplify

              y - 9 = 2x - 6

              y = 2x - 6 + 9

5.- Result

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6 0
3 years ago
Solve for the value of k. (k+8) 400​
pashok25 [27]

Answer:

value of k = 6

Step-by-step explanation:

sum of all angles forming a straight line = 180°

so,

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  • 7k = 42
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hence the value of k = 6

3 0
3 years ago
857 runners entered a race. 354 more entered before
yan [13]

Answer:

D. 1,211

Step-by-step explanation:

857 + 354 = 1,211 runners

8 0
3 years ago
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4 0
3 years ago
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