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dusya [7]
2 years ago
11

Need help please!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
const2013 [10]2 years ago
5 0

Answer:

1. 3x = 12 . the answer is d. x = 4

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AC is tangent to circle O at point C. What is the length of OC
Sedaia [141]

Let OC is x, so OC=OB=x

{4}^{2}  + x^{2}  =  {(2 + x)}^{2}  \\ 16 +  {x}^{2}  = 4 + 4x +  {x}^{2}  \\ 12 = 4x \\ x = 3

Answer: OC=3 points

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3 years ago
What does 1 5/6 × 2 equal
kotykmax [81]
Make it a improper fraction first.
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Which is greater, -9/20 or -0.5?
Natali5045456 [20]

Answer and Step-by-step explanation:

If we put -\frac{9}{20} into decimal form, we get -0.45.

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3 years ago
Help anyone I don’t understand this ????
Alexeev081 [22]
The answer would be 0
You combine the first 2 “K” and that would make it k squared meaning it equals to 1 so now it’s 3k minus 3k so 0
5 0
3 years ago
A dairy scientist is testing a new feed additive. She chooses 13 cows at random from a large population of cows. She randomly as
Alina [70]

Answer:

Step-by-step explanation:

Hello!

The objective of this experiment is to test if a new feed + additive generates a better production of milk in cows. For this, the owner selects 13 cows and randomly separates them into two groups.

Group 1 has 8 cows that receive the new feed + additive.

Group 2 has 5 cows that were fed with the old feed.

After two weeks of feeding the animals with the different feeds, the production of milk of each group was recorded so that they can be compared.

Since you have two separate groups to wich at random two different treatments were applied and later the variable was measured, these two samples/groups are independent and the proper test to compare the population means of the milk production in both groups is a pooled t.

I hope this helps!

6 0
3 years ago
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