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damaskus [11]
3 years ago
11

HELP ME PLEASEEEEEEEEE

Mathematics
1 answer:
melisa1 [442]3 years ago
3 0

(11 + x) \div 2 = 7 \\ 11 + x = 14 \\ x = 14 - 11 \\ x = 3

(4 + y) \div 2 = 5 \\ 4 + y = 10 \\ y = 10 - 4 \\ y = 6

(3,6) -  option \: a

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If 3 is subtracted from twice a number, the result is 8 less than the number. Write an equation to solve this problem.
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3 subtracted from twice a number=2x-3
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Andrew was working on a project for Science class. He began working on the project at 10:32 a.m. When he finally
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Suppose the method of tree ring dating gave the following dates A.D. for an archaeological excavation site. Assume that the popu
maw [93]

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(1238.845 ;1285.376)

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Data must be random

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1241 1210 1267 1314 1211 1299 1246 1280 1291

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Using a calculator ; s = 37.525

The confidence interval :

C.I = xbar ± [Tcritical * s/√n]

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Tcritical at 90% = 1.860

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C.I = 1262.11 ± 23.266

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± 23.266

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[Tcritical * s/√n]

[1.860 * 37.525/√9]

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7 0
3 years ago
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