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Brrunno [24]
3 years ago
5

Select the polynomial that is a perfect square trinomial.

Mathematics
1 answer:
Andre45 [30]3 years ago
5 0
(a\pm b)^2=a^2\pm2ab+b^2


a)\ 49x^2-8x+16=(7x)^2-2\cdot x\cdot4+4^2-NOT\\\\b)\ 4a^2-10a+25=(2a)^2-2\cdot a\cdot5+5^2-NOT\\\\c)\ 25b^2-5b+10=(5b)^2-5b+10-NOT\\\\d)\ 16x^2-8x+1=(4x)^2-2\cdot4x\cdot1+1^2=(4x-1)^2-YES!

\text{Answer: d)}

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Which is the area of a square with one side that measures 1 foot? A. 1 square inch B. 100 square inches C. 144 square inches D.
cluponka [151]

Answer:

Option C. 144 square inches is the correct answer.

Step-by-step explanation:

We have been given a square with one side with a measurement of 1 foot and we have to calculate the area in square inches.

First we know that 1 foot of length = 12 inches on scale

Therefore side of the square is 12 inches

Now the area of the square will be = (Side×Side) = (Side)²

                                                          = (12)² = 144 square inches.

So the area of the square will be 144 square inches.

6 0
3 years ago
A triangle has one angle that measures 40 and another that measures 38. What is the measure of the triangles third angle
mr_godi [17]

Answer:

102°

Step-by-step explanation:

that's the answer because 40+ 38 = 78. then 180- 78 = 102. Remember that in tringles, all three angles should add up to 180°

4 0
3 years ago
Ella ran 3.6 kilometers. How many meters did she run?
Helga [31]

Answer:3600 Step-by-step explanation:

5 0
3 years ago
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HELPPP PLEASEEE i don’t know how to do this and i’m just trying to pass the test
natali 33 [55]

(B) is the right answer
4 0
2 years ago
The piecewise function f(x) has opposite expressions. f(x) =  Which is the graph of f(x)?
Anarel [89]

Answer:

4) is the opposite function of 3), and vice versa. Because f(x) =2x-1 and  its opposite f(x)=-2x+1. And we can see them both in pictures 3 and 4.

Step-by-step explanation:

A piecewise function is a function defined in a sequence of  intervals. The most known piecewise function is the modular function. (1st picture)

An opposite function is given by f(x)=-x of f(x)=x

The following pictures describe the following functions:

1) f(x)=-|2x|+2

2) f(x)= 2.34x-2.34 and f(x)= -2.34x-2.34

Notice how the second function express the opposite line, by the opposite angular coefficient.

3) f(x) =2x-1 and f(x)=-2x+1

4) f(x) = -2x+1 and f(x)=2x-1

Different intervals but the same functions are graphed in 3 and 4. So the graph of f(x)=2x-1 and its opposite f(x)=-2x-1

6 0
3 years ago
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