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3 years ago

Round 158.8 nearest 10th

Mathematics

1 answer:

solniwko [45]3 years ago

6 0

Answer:

159 I think

Step-by-step explanation:

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Could some one help me in this?

bekas [8.4K]

Answer:

A = 3.14 × r²

Step-by-step explanation:

A = πr²

A = 3.14 × r²

3 0

3 years ago

Read 2 more answers

When a plane flies with the wind it can travel 1680 miles in 3 hoursWhen the plane flies in the opposite direction against the w

Bumek [7]

Answer:

It would take long

Step-by-step explanation:

It would take longer because the air is pushing it

4 0

3 years ago

Mark is trying to determine all three side lengths of an isosceles triangle. He knows that the two congruent sides on the triang

jarptica [38.1K]

Answer:

The congruent side length is 6. The third side length is 3.

Step-by-step explanation:

You find the square root by multiplying two of the same numbers to equal 36 which the answer is equal to 6.
Then you find the cube root of 27 by multiplying three of the same numbers together to equal 27 which is equal to 3.

4 0

4 years ago

The Highway Safety Department wants to study the driving habits of individuals. A sample of 41 cars traveling on the highway rev

PolarNik [594]

Answer:

58,21 ≤ μ ≤ 61,79

Step-by-step explanation:

Normal Distribution

Poputation size n = 41

Population mean X = 60

Population standard deviation σ = 7

Question is: Confidence Interval 90 % ??

As Confidence Interval is 90 % then α = 10 %

And as we are dealing with a two tail test

α/2 = 0,05

We look in Z table for values for α/2 = 0,05 and find

z(α/2) = - 1,64 and z(α/2) = 1,64

Then

Confidence Interval is

X - Zα/2 * σ/√n ≤ μ ≤ X + Zα/2 * σ/√n

60 - ( 1,64 ) * 7/√41 ≤ μ ≤ 60 + ( 1,64 ) * 7/√41

60 - 1,64 * 1,09375 ≤ μ ≤ 60 + 1,64 * 1,09375

60 - 1,79375 ≤ μ ≤ 60 + 1,79375

58,21 ≤ μ ≤ 61,79

4 0

4 years ago

line n passes through the points (-3, -7.5) and (2, -5). tahlia determined that the equation of line n is y = 0.5x. explain the

sweet-ann [11.9K]

<h2>Therefore Tahlia made mistake. Tahlia did not write -6 in her equation.</h2>

Step-by-step explanation:

Given , line n passes through the points (-3,-7.5) and (2,-5)

$x_1 = -3 , y_1=-7.5$ and $x_2 = 2 , y_2=-5$

Therefore the slope of the line is (m) $=\frac{y_1-y_2}{x_2-x_1}$

$=\frac{-7.5+5}{2+3}$

$=\frac{2.5}{5}$ $=\frac{1}{2}$

Therefore the equation of line is

$y-y_1=m(x-x_1)$

$\Leftrightarrow y+7.5 =\frac{1}{2}(x+3)$

$\Leftrightarrow y+7.5 = 0.5x+1.5$

$\Leftrightarrow y = 0.5x+1.5 -7.5$

$\Leftrightarrow y = 0.5x -6$

Therefore Tahlia made mistake. Tahlia did not write -6 in her equation.

5 0

3 years ago