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Rashid [163]
3 years ago
9

Why must a scientist keep a complete record of an experiment?

Mathematics
1 answer:
Musya8 [376]3 years ago
3 0
Because if he don’t he wouldn’t keep track on a invention he has made
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Anton [14]

Answer:

90 percentage

Step-by-step explanation:

90,

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Henry has x blue pens. Rachel has $5$ blue pens and $y$ black pens. Jake has $3$ times the total number of pens Henry and Rachel
Troyanec [42]

Answer:

Step-by-step explanation:

Henry X blue

Rachel 5 blue and Y black

Jack 3 times the total of pens ( blue & black)

So

X + 5 + Y for Henry and Rachel

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4 0
2 years ago
Marvin bought some softballs and hardballs for the high school teams he coaches. Softballs cost $5 each, and hardballs cost $4 e
marusya05 [52]

Answer:

5x+4y<=20

Step-by-step explanation:

We are expected to model the expression for the cost of the softball and the Hardball combined.

le the number of hardballs be x

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 the cost of the hardballs is =5x

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therefore given that the total cost is =$20

the expression for the cost of x and y balls is given as

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5 0
3 years ago
A triangle has side lengths of x, x+11, and 3x+5.
horrorfan [7]

Answer:

The answer is 5X+16

Step-by-step explanation:

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5x+16

3 0
4 years ago
nada put the data she collected during her survey in a table then she found the mean of the four rows of data
nika2105 [10]

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Step-by-step explanation:

8 0
4 years ago
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