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Papessa [141]
3 years ago
10

Product of (x – 3)(2x + 1)?

Mathematics
1 answer:
Arada [10]3 years ago
3 0

Answer:

If you need the expression: 2x^2-5x-3

If you need answers from a factored form: x=3 and x= -1/2

Step-by-step explanation:

(x-3)(2x+1)

2x^2+x-6x-3

2x^2-5x-3

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11 more than five of a certain number is twenty more than 2 times of that number. what is the number?​
RUDIKE [14]

Answer:

Let the number be x

Given:  

11 + 5x = 20 + 2x

5x - 2x = 20 - 11

3x = 9

x = 3

The number is 3.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
How do I graph a function based off the unit circle?
sweet [91]
So if you remember what the normal y = sin(x) function looks like (a wave), y = 2 sin(4x) is just changed a little.

The standard format for sine/cosine function
<span>y = a sin<span>(bx− c)</span> + <span>d

a = amplitude, distance from center of the wave to the highest point. This function a = 2 so the height of the sine wave reaches 2 instead of 1.
"c" and "d" shift the graph left/right and up/down respectively. These equal zero so the sine wave is not shifted.

The range (y-values) is then just the amplitude -2 ≤ y ≤ 2

The domain (x-value) is all real numbers because the wave just keeps going on to infinity in both directions.

2π / |b| = period, distance per wave
this equation b = 4
period is then π/2
this is the distance before a wave repeats.

Graph
     x  |  y
-π/8    -2
    0      0
  π/8    2
3π/8   -2
5π/8    2

see the pattern? I'm using the amplitude or peaks and bottoms of the wave y = 2 and -2  then using the x-distance between like points is the period so you add π/2

(π/8 , 2) 
+ π/2
(5π/8 , 2)

Same for the minumums of the wave (y = -2)
(-π/8 , -2)
+ π/2
(3π/8 , -2)

Hope this helps, otherwise there are youtube videos you can watch or try an online graphing calculator like Desmos.com





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7 0
3 years ago
Lee and Dan have the same number of blocks Lee has 20 green blocks and 36 blue blocks Dan has 13 green blocks 23 blue blocks and
Charra [1.4K]

Answer:

20 red blocks

Step-by-step explanation:

Lee blocks--20 + 36= 56

Dan blocks 13 + 23 =36  

56 - 36=20

8 0
3 years ago
Please answer the question
klasskru [66]

Answer:

180000

===========

\rightarrow \sf \dfrac{2^3*5^2*(2*3)^2*(3*5)^2}{3^2}

\rightarrow \sf \dfrac{8*25*(6)^2*(15)^2}{3^2}

\rightarrow \sf \dfrac{8*25*36*225}{9}

\rightarrow \sf \dfrac{1620000}{9}

\rightarrow \sf 180000

8 0
2 years ago
Read 2 more answers
How much of the circle is shaded 1/7 + 1/2
OlgaM077 [116]

Answer:

The answer would be 0.64285714285

Step-by-step explanation:

You just add both of the fractions you showed above

6 0
2 years ago
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