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Daniel [21]
3 years ago
8

Find the difference of (2x+5)(2x-5)

Mathematics
1 answer:
san4es73 [151]3 years ago
3 0

Answer:

4x2−25

Step-by-step explanation:

(2x+5)(2x−5)

=(2x+5)(2x+−5)

=(2x)(2x)+(2x)(−5)+(5)(2x)+(5)(−5)

=4x2−10x+10x−25

4x2−25

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An object moves along a coordinate axis so that its position at time t is given by s(t)=t3. Estimate its instantaneous velocity
Mademuasel [1]

If the position at time <em>t</em> is

<em>s(t)</em> = (1 m/s³) <em>t</em> ³

then the average velocity over <em>t</em> = 2 s and <em>t</em> = 2.001 s is

<em>v</em> (ave) = (<em>s</em> (2.001 s) - <em>s</em> (2 s)) / (2.001 s - 2 s)

<em>v</em> (ave) = ((1 m/s³) (2.001 s)³ - (1 m/s³) (2 s)³) / (2.001 s - 2 s)

<em>v</em> (ave) ≈ (8.01201 m - 8 m) / (0.001 s)

<em>v</em> (ave) ≈ 12.006 m/s

6 0
3 years ago
Using the distributive property to find the product (y – 4)(y2 + 4y + 16) results in a polynomial of the form y3 + 4y2 + ay – 4y
horsena [70]
( y - 4 ) ( y² + 4 y + 16 ) = y³ + 4 y² + 16 y - 4 y² - 16 y - 64
The result is a polynomial of the form:
y³ + 4 y² + a y - 4 y² - a y + 64;
Answer: a = 16
7 0
3 years ago
The measure of angle Wis 100°, and the measure of angle Z is 68º.
valkas [14]

Answer:

12

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Can u find x and identify the triangle, this will really help out thx
natta225 [31]

Answer:

x=12

Isosceles triangle

Step-by-step explanation:

The lines on the sides means that the two sides are equal. Two equal sides means that it is an isosceles triangle.  The angles at the base must be equal

35 = x+12

Subtract 12 from each side

35-12 = x+12-12

23 = x

5 0
4 years ago
Simplify completely 4x^3+5x^2+3x/x
KIM [24]

\dfrac{4x^3+5x^2+3x}{x}=\dfrac{4x^3}{x}+\dfrac{5x^2}{x}+\dfrac{3x}{x}=4x^2+5x+3\\\\other\ method\\\\\dfrac{4x^3+5x^2+3x}{x}=\dfrac{x(4x^2+5x+3)}{x}=4x^2+5x+3

4 0
4 years ago
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