3 years ago

Help plz:))) I’ll mark u brainliest ASAP!!!

Mathematics

2 answers:

Oksana_A [137]3 years ago

4 0

Answer:

x=17 i think

Step-by-step explanation:

Vilka [71]3 years ago

4 0

Answer:

x = 17

Step-by-step explanation:

18 = x + 1

18 - 1 = x

17 = x

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3 years ago

The time to complete a standardized exam is approximately normal with a mean of 70 minutes and a standard deviation of 10 minus.

AnnyKZ [126]

Answer:

Step-by-step explanation:

Given that the time to complete a standardized exam is approximately normal with a mean of 70 minutes and a standard deviation of 10 minutes.

P(completing exam before 1 hour)

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=P(Z< $\frac{60-70}{10} =-1$ )

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3 years ago

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siniylev [52]

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2 years ago

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Xelga [282]

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1 year ago

If it takes 16 yards of material to make 5/2 costumes, how much material will be needed to make 19/2 costumes of that same size?

IRISSAK [1]

yards/costumes:16/(5/2) = X/(19/2)

Cross multiply.

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Multiply both sides by 2/5.

x = 101 1/3 yards

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3 years ago