3 years ago

HURRY I'LL PICK A BRAINLIEST PERSON!!!

Mathematics

1 answer:

vesna_86 [32]3 years ago

8 0

Y=3 if you want to know the process lemme know

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Last year the dept of the river was 4.2 feet deep. THIS YEAR UT DROPPED 11% find the depth of the f the river this year

Romashka [77]

Answer:

new depth =

4.2/100 X 89 = 3.738 feet

4 0

3 years ago

Drag and drop the fractions to order them from least to greatest. -3/7 1/4 -4/5 2/3

lbvjy [14]

Answer:

-4/5, -3/7, 1/4, 2/3

Step-by-step explanation:

The last one is the greatest as a positive but because it's both the greatest positive but a negative it is the smallest. Since 2/3 is closest to 1 and is positive it would be the greatest. -3/7 is a smaller value than 1/4 as it's closer to 0 than 1/4 is.

8 0

3 years ago

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What is the anwers for this? 8/7 = x/6

Nat2105 [25]

Answer:

$x=\frac{48}{7}$

Step-by-step explanation:

$\frac{8}{7} =\frac{x}{6} \\\\7x=48\\x=\frac{48}{7}$

8 0

3 years ago

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The simplified expression is -4.4c+1.1

valina [46]

Answer:

What's the question tho

7 0

4 years ago

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The compressive strength of concrete is being tested by a civil engineer who tests 12 specimens and finds that the sample mean i

ki77a [65]

Answer:

The 95% confidence interval for mean compressive strength is:

$3237.3\leq \mu\leq 3282.5$

Step-by-step explanation:

We have a sample of n=12 specimens, with sample mean=3259.9 and sample standard deviation = 35.57.

We know the population is normally distributed.

For a 95% confidence interval and df=n-1=11, the t-statistic is t=2.201.

Then, the CI can be expressed as:

$M-t*s/\sqrt{N}\leq \mu\leq M+t*s/\sqrt{N}\\\\3259.9-2.201*35.57/\sqrt{12}\leq \mu\leq 3259.9+2.201*35.57/\sqrt{12}\\\\ 3259.9-22.6\leq \mu\leq 3259.9+22.6\\\\3237.3\leq \mu\leq 3282.5$

6 0

3 years ago