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Kay [80]
3 years ago
7

Factor the expression. d2 – 4d + 4

Mathematics
1 answer:
s344n2d4d5 [400]3 years ago
3 0
(D+2)2
Because d2 is just 2*d so it’s 2d-4d+4 subtract 2d from 4d and you get (2d+4) and you can factor out a 2 from that 2(d+2)
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Which equation represents the line that passes through the point (4, -5) and is perpendicular to the line x + 2y = 5?
Lerok [7]

Answer:

y = 2x - 13

Step-by-step explanation:

Equation of a line is y = mx + c, m is the gradient and c is the intercept

The line passes through points 4 and -5, x is 4 and y is -5

-5 = 4m + c

When two lines are perpendicular, the products of their gradients are equal to -1, m1 * m2 = -1

x + 2y = 5

2y = -x + 5

y = (-1/2 * x) + 5

therefore m = -1/2

m1 * m2 = -1

m * -1/2 = -1

-m = -2 , therefore m = 2

-5 = 4 * 2 + c

c = -5 - 8, which is -13

Therefore the equation for the line is

y = 2x - 13

7 0
3 years ago
Find the value of the variables please please help me out I will mark you the brainly! Please please
RSB [31]

Answer:

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Step-by-step explanation:

The secant- secant angle 20° is half the difference of the intercepted arcs, that is

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- 2m + 148 = 40° ( subtract 148 from both sides )

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4 0
3 years ago
Read 2 more answers
Seven weightlifters are competing in the dead-lift competition. In how many ways can the weightlifters finish first, second, and
Airida [17]
I think the answer is 21 you just multiply the number of weightlifters by the number of places so 7 x 3.
7 0
3 years ago
The concession stand at a ballpark makes $0.43 profit from each hot dog sold. It also makes a profit of $0.65 from each pretzel
kaheart [24]
0.43h + 0.65p + 1.31d = c

explanation:
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hope this helps! :D
4 0
3 years ago
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Alenkinab [10]

Answer:

LP = 16 units (8 + 8)

x = 4.25 units

Step-by-step explanation:

8 0
3 years ago
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