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nadya68 [22]
3 years ago
12

Evaluate: x^2b(b+x) , if x=−3 and b=2

Mathematics
1 answer:
spin [16.1K]3 years ago
3 0

Answer:

-18

Explanation:

-3^2=9

9*2=18

18(2+-3)

18*-1= -18

-18

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Alekssandra [29.7K]

Answer:

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3 0
3 years ago
Find the length and surface area.<br><br>Width = 2<br><br>Height = 12<br><br>Volume = 240​
blondinia [14]

Answer:

Length: 10

Surface Area: 20

Step-by-step explanation:

Length:

2*12=24

240/24=10

Surface Area:

2*10=20

6 0
3 years ago
1/2 times x = 92<br> please help I do not know how to do this.
77julia77 [94]

Answer:

184

Step-by-step explanation:

1/2 times x = 92

so 1/2 means half so what we do is add 92 to 92 so its 184

8 0
3 years ago
Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
zvonat [6]

The solutions are x=15, x=-8 and x=9

Explanation:

Part a: The equation is \frac{1}{3} (5x-9)=2(\frac{1}{3} x+6)

Let us find the value of x.

Multiply the terms within the bracket, we get,

\frac{5}{3} x-3=\frac{2}{3} x+12

Subtracting both sides by \frac{2}{3} x, we have,

\frac{3}{3} x-3=12

Adding both sides by 3,

x=15

Thus, the solution of the equation \frac{1}{3} (5x-9)=2(\frac{1}{3} x+6) is x=15

Part b: The equation is 4(3x+5)-3=9x-7

Multiply the terms within the bracket, we get,

12x+20-3=9x-7

Subtracting both sides by 9x, we have,

3x+17=-7

Subtracting both sides by 17,

3x=-24

Dividing both sides by 3, we have,

x=-8

Thus, the solution of the equation 4(3x+5)-3=9x-7 is x=-8

Part c: The equation is 5(x+7)-3(x-4)=7x+2

Multiply the terms within the bracket, we get,

5x+35-3x+12=7x+2

Adding the like terms, we have,

2x+47=7x+2

Subtracting both sides by 2 and 2x, we get,

45=5x

Dividing both sides by 5, we have,

x=9

Thus, the solution of the equation 5(x+7)-3(x-4)=7x+2 is x=9

8 0
4 years ago
Which expression is equivalent to (sin x + 1)(sin x − 1)?
lara [203]
Please be careful in the future regarding the options. These options look like cos of 2x, rather than cos(squared) of x. 

The answer is B) -cos²(x)

(sin(x) + a) (sin(x) - a) = -cos²(x)
8 0
3 years ago
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