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Scrat [10]
4 years ago
10

Simplify the expression 3bx4b

Mathematics
2 answers:
BARSIC [14]4 years ago
7 0
Hfhhggjgjbjkyjghjhnhughghyhhh
Iteru [2.4K]4 years ago
5 0
Hello there!

This is a simple act of multiplication:

3 x 4 = 12
b x b = b²

Therefore your answer is 12b²

Hope This Helps!!!
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Find the coordinates of the centroid of the triangle with the given vertices. (Lesson 5-2)
marysya [2.9K]

The triangle with vertices located at A(1 , 7), B(4 , 2), and C(7 , 7) has its centroid located at (4 , 16/3).

The centroid of a triangle is the point inside the triangle where the three medians intersect. The median of a triangle is the line the connects the midpoint of a side and the opposite vertex.

To get the centroid of a triangle, use the formula given by:

C(x , y) = [(x1 + x2 + x3)/3 , (y1 + y2 + y3)/3]

where C is the centroid of the triangle located at (x , y)

x1, x2, and x3 are the x-coordinate of the vertices of the triangle

y1, y2, and y3 are the y-coordinate of the vertices of the triangle

Let Point 1(x1 , y1) =  A(1 , 7)

Point 2(x2 , y2) = B(4 , 2)

Point 3(x3 , y3) = C(7 , 7)

Plug in the values in the formula.

C(x , y) = [(x1 + x2 + x3)/3 , (y1 + y2 + y3)/3]

C(x ,y) = [(1 +4 + 7)/3 , (7 + 2 + 7)/3]

C(x ,y) = (12/3 , 16/3)

C(x ,y) = (4 , 16/3)

Learn more about centroid of triangle here: brainly.com/question/7644338

#SPJ4

5 0
1 year ago
2/3x=12 <br> Please help! Need this asap :( <br> Please show the work!
Vladimir79 [104]

Answer: x=18

Step-by-step explanation:

2/3 * x=12

2x=36

x=18

7 0
2 years ago
Read 2 more answers
If f(x) = x2 − 1, and f(2a) = 35, then what could be the value of a ?
Naily [24]
<span>f(x)=<span>x2</span>−1</span>That means to find the value of the function at any value of x, we square x and subtract 1. If <span>x=2a</span>, we square <span>2a</span> and subtract 1:<span>f(2a)=(2a<span>)2</span>−1=4<span>a2</span>−1</span>Now, we know that <span>f(2a)=35</span>so we can find the value of a:<span>f(2a)=(2a<span>)2</span>−1=4<span>a2</span>−1=35</span><span>4<span>a2</span>−1+1=35+1</span><span>4<span>a2</span>=36</span><span><span>a2</span>=9</span><span><span>a=±3</span></span>
5 0
3 years ago
Allison is rolling her hula hoop on the playground. The radius of her hula hoop is 35 cm.
Ivan

Answer:

The hula hoop rolls 879 \text{ cm}879 cm.

Step-by-step explanation:


8 0
3 years ago
A device is rated at 1,100 watts.what current is required if it is operated at 110 volts?​
WINSTONCH [101]

1 ) Watts =E * I = 110 * 5 = 550 watts =.55 KW  

2) I = Watts / e = 1100 / 110 = 10 amperes  

3) 1 horsepower = 33000 ft/lbs per minute  

HP = ( 2000 * 1000) / (33000 *4) = 15.1515 hp  

4) cost = (10 * 100 / 1000) *11 * $0.10 = $1.10  

5) This answer will be incorrect because you have not stated the power factor of the motor.  

va = I * E = 7.5 * 240 = 1800  

2 hp = 2 * 746 watts = 1492 watts  

If the motor had a 1.0 power factor (it doesn't) the efficiency would be  

efficiency = output / input = 1492 / 1800 = 82.888 %  

6) I = watts / E =1000 / 120 = 8.333 amps  

7) 1 = watts / E = 1000 / 240 = 4.1616  

8) Kw-hr = (2 * 24 * 365 ) / 1000 = 17.52  

cost = kw-hr * $0.03 = 17.52 * $0.03 = $0.5256  

9) efficiency = (115 * 240) / (2400 * 12) = 95.8333 %  

10) KW = (I^2 * R) / 1000 = (20^2 * 5) / 1000 = 2  

     

5 0
3 years ago
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