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ExtremeBDS [4]
3 years ago
6

Helppp this is timed!!

Mathematics
1 answer:
Paha777 [63]3 years ago
4 0

Answer:

The answer must be D

Step-by-step explanation:

When a shape like a trapezoid is rotated, the figure will remain the same which means that a rotation will not change the measure of the angles, or the measure of the sides, therefore d must be correct because a rotation is a rigid transformation.

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First, you need to substitute the value of x in all of the x spots. 
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3 years ago
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a machine can reduce 21 inches of ribbon every 3 minutes. How many feet of ribbon can the machine make in one hour?
Zarrin [17]
Okay. Let's make a proportion for this. So we can do 21/3=x/60. Let's multiply cross way. So 21 x 60 is 1260. We multiply 3 by x to get 3x. So our equation will be 3x=1260. We can isolate the equation by 3, and 1260 divided by 3 is 420. So x=420. We then have to convert into feet. So 420 divided by 12 is 35. So it would be 35 feet. Therefore, the machine can make 35feet of ribbon in a hour.
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3 years ago
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Effectus [21]
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6 0
3 years ago
Which equation is equivalent to 3/4=2x-1/2y+4
lyudmila [28]

Answer:

option a and d

Step-by-step explanation:

\frac{3}{4}  =  \frac{2x - 1}{2y + 4} \\ 3(2y + 4) = 4(2x - 1) \\ 6y + 12 = 8x - 4 \\ now \\ 6y = 8x - 4 - 12 \\ 6y = 8x - 16 \\ y =  \frac{8x - 16}{6} \\   y =  \frac{8x}{6}  -  \frac{16}{6}  \\ y =  \frac{4x}{3}  -  \frac{8}{3}  \\ y =  \frac{4}{3} x -  \frac{8}{3}  \\a nd \\  \\ 6y + 12 = 8x - 4 \\  6y + 12 + 4 = 8x \\ 6y + 16 = 8x \\  \frac{6y + 16}{8}  = x \\  \frac{6y}{8}   +  \frac{16}{8}  = x \\  \frac{3y}{4}  + 2 = x \\  x = \frac{3}{4} y + 2

6 0
3 years ago
Consider the function: y=2x+5 <br> ​What will be the value of the function when x=10?
Katarina [22]

Answer:

y=25

Step-by-step explanation:

10*2=20

20+5=25

5 0
3 years ago
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