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Yuki888 [10]
2 years ago
6

Simplify: (x + 7)(x-4) A. 2r +3 B. 12-28 C. x2-3x - 28 D. x2 + 3x - 28

Mathematics
1 answer:
jeka57 [31]2 years ago
7 0

Answer:

(x + 7)(x - 4) = x2 - 4x + 7x - 28 = x2 + 3x - 28

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Wittaler [7]
2.) y=-3x-1 and if you look closely you’ll notice the line is going down making it negative and it’s going down by 3 so it’s -3x and when your looking for y just remember you’re looking for the point that’s on the line of y and here you can see the point is on -1 so there’s your answer.
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Traveling to Vietnam,a plane encounters a tailwind and averages 289 mph.However ,on the return trip the plane , now traveling ag
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5 0
3 years ago
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What is an equilateral triangle
almond37 [142]

Answer:

When all sides are equal

Step-by-step explanation:

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2 years ago
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A population of 100 frogs increases at an annual rate of 22%. How many frogs will there be in 5 years? Write an expression to re
gizmo_the_mogwai [7]
Exponential growth of the form:

F=Ar^t

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F(5)=270 to the nearest frog...

....

1.22=r^12

r=1.22^(1/12)

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F=100(1.22^(t/12))  now it will produce monthly populations...

Say we did the same as before but instead of 5 years you have 60 months...

F(60)=100(1.22^(60/12))

F(60)=270 to the nearest frog... :P 
6 0
3 years ago
Given that (-1, a) is the midpoint of the line segment joining (0, -2) and (b, 8) then find the values of a and b
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Answer: a=3 & b=-2


Step-by-step explanation:


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