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Alekssandra [29.7K]
3 years ago
8

Kai wrote the number 85 on the board. Is 85 a prime or composite?

Mathematics
1 answer:
Lesechka [4]3 years ago
7 0
85 is not a prime, it’s a composite number.
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Divide 254 : 6 = Round to the nearest tenth​
snow_lady [41]

Answer:

40

Step-by-step explanation:

AS the ansewer is 42.somthing

and then you round down

5 0
3 years ago
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What are the coordinates of the image of vertex R -3,4 after a reflection across the y-axis? (–4, 3) (4, –3) (–3, –4) (3, 4)
Feliz [49]
The coordinate of the image after being reflected is R(3,4).

When dealing with reflection of a line or shape or a figure in the coordinate plane, especially if it is reflected across the y- axis, you just have to give the opposite of the given (original) x- coordinate in order to give a symmetric figure.
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3 years ago
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Use a 95​% prediction interval to predict the useful life of a brand A cutting tool when the cutting speed is 45 meters per minu
qwelly [4]

Answer:

<em>The answer resides in the explanation.</em>

<em>Pls rate as brainliest </em>

Step-by-step explanation:

The predicted useful life of a brand A cutting tool when the speed is 45 meters per minute is 1.2 to 5.5 hours.

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The prediction interval for brand A is larger than the prediction interval for brand B because the estimated standard error of  y^ is different for the two intervals.

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The predicted useful life of a brand A cutting tool that is operated at 100  meters per minute is -0.59 hours

The actual predicted useful life of a brand A cutting tool when the speed is 100 meters per minute is 0.0 to 2.3 hours.

6 0
3 years ago
Jeff uses 3 fifth size strips to model 3/5 he wants to use tenth size strips to model an equivalent fraction how many tenth size
PilotLPTM [1.2K]
3/5 x2= 6/10

he needs 6 stirps
﴾͡๏̯͡๏﴿ O'RLY?
7 0
3 years ago
4.9-16=. A:25 B:7 C:-25 D:-7
shtirl [24]

Answer and Step-by-step explanation:

It says your question is : 9-16=? And the answer for that would be -10. But that's not there in the options I think your question was supposed to be meant like this : 16-9=? cause then it would be 7 tho it's there in the options, the sign is wrong it's not -7 it's  +7 or just 7.

8 0
3 years ago
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