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garik1379 [7]
3 years ago
9

Which expression correctly represents "twice the sum of four and a number"?

Mathematics
1 answer:
Lesechka [4]3 years ago
7 0

Answer:

2(4+x)

Step-by-step explanation:

"Twice the sum of" tells us it will be the equation times two

"the sum of four and a number" is easy, thats 4 + x

The second number is x because the number is not specified so we need a place holder, x in this case, to tell us that the number is not given.

All this put together = twice the sum of four and a number, or <u>2(4+x)</u>

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natta225 [31]

Answer:

B

Only one that goes over once and up twice

6 0
3 years ago
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Help me asap please I need this now
Virty [35]

A.  -1/4(x-10)^2

The screenshot shows the graph

5 0
2 years ago
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What is the answer????
xz_007 [3.2K]

Answer:

36/48 or 6/8 or 3/4 or .75

Step-by-step explanation:

6^2/ [(2+4)*2^3]

6^2/  [ ( 6)*2^3]

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8 0
3 years ago
When a constant force is applied to an object, the acceleration of the object varies inversely with its mass. When a certain con
maria [59]

First:

F=m.a

=4*7

=28N

Second:

F=m.a

28=m.2. (force is constant,so F=28N)

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3 years ago
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A random sample of bolts is taken from inventory, and their lengths are measured. The average length in the sample is 5.3 inches
LekaFEV [45]

Answer:

L_x=5.3 inches

Step-by-step explanation:

Average length \=x =5.3 inches

Standard deviation \sigma=0.2 inches

Sample size n=50

Generally The point estimate for the mean length of all bolts in inventory is

L_x= \=x

L_x=5.3 inches

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3 years ago
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