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3 years ago

What's the circumference of a circle with a diameter of 30 centimeters?

Mathematics

2 answers:

egoroff_w [7]3 years ago

8 0

The circumference of a circle with a diameter of 30 centimeters is 94.25 cm

I hope this helped! : )

mariarad [96]3 years ago

8 0

94.25 is your answer.

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What is the slope of the line that is perpendicular to the line that passes through (-2, 7) and (4, 9)? Type a numerical answer

kodGreya [7K]

Answer:

Therefore $m_{2}$ = -3.

Step-by-step explanation:

i) let us say the slope of the line passing through (-2,7) and (4,9) is $m_{1}$ .

ii) to find the slope of the line passing through two points ( $x_{1}$ , $y_{1}$ ) and ( $x_{2}$ , $y_{2}$ ) we use the formula m = $\dfrac{y_{2} - y_{1} }{x_{2} - x_{1} }$ . Therefore we can say that $m_{1}$ = $\dfrac{9 - 7}{4 - (-2)}$ = $\dfrac{1}{3}$ .

iii) let us say the slope of the perpendicular line to the line passing through (-2,7) and (4,9) is $m_{2}$

iv) from the formula for the slopes of a line and the line perpendicular to it which is given by $m_{1}$ × $m_{2}$ = -1, therefore $m_{2}$ = -1 ÷ $m_{1}$ = -3. Therefore $m_{2}$ = -3

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3 years ago

Find the value of x. Round your answer to the nearest tenth.

NikAS [45]

Answer:

In this question, we can use the Pythagorean theorem to solve for x.

11^2 + x^2 =24^2

x^2 = 24^2 -11^2

x is about 21.3

Let me know if this helps!

8 0

2 years ago

Maureen McIlvoy, owner and CEO of a mail order business for wind surfing equipment and supplies, is reviewing the order filling

lara31 [8.8K]

Answer:

Maureen's null hypothesis is, H₀: p₁ ≥ p₂.

Step-by-step explanation:

Maureen McIlvoy, owner and CEO of a mail order business for wind surfing equipment and supplies wants test whether her goal of shipping 100% orders within 24 hours is achieved or not.

After reviewing the order filling operations at her warehouses she determines that neither the East coast nor the West coast warehouse has achieved the goal. But the East Coast warehouse has consistently out-performed the West Coast warehouse.

To check whether this determination is correct or not Maureen's staff randomly selected 200 orders from the West Coast warehouse (population 1) and 400 orders from the East Coast warehouse (population 2).

Of the 200 orders from the West Coast warehouse, 190 were shipped within 24 hours. And of the 400 orders from the East Coast warehouse, 372 were shipped within 24 hours.

The hypothesis can be defined as follows:

H₀: The proportion of orders that were shipped within 24 hours is not more for East Coast warehouse than for West Coast warehouse, i.e. p₁ ≥ p₂.

Hₐ: The proportion of orders that were shipped within 24 hours is more for East Coast warehouse than for West Coast warehouse, i.e. p₁ < p₂.

Thus, Maureen's null hypothesis is, H₀: p₁ ≥ p₂.

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3 years ago

Help pLLEAAASSEE LOLOLOL

guajiro [1.7K]

Answer:

the answer is c, hope this helps

5 0

3 years ago

Please draw and label a figure for this sentence in geometry

Kaylis [27]

Answer:

First, plot points A & B on a graph.

Collinear just means 3 or more points in a straight line (because just 2 points are always collinear, since a straight line can always be drawn through two points.

The instructions don't state a specific area in which points C & D have to be in, so you can put them anywhere, as long as they are collinear with each other, but not any other points,

i.e. putting three units up and two units left of points A & B

So let's make up some points for C & D that are on a straight line.

Remember, this line does not have to be horizontal! As long as it's a straight line, any direction will do.

Here are some points that you can choose from:

C(-1, 1); D(-1, -1)
C(4, 5); D(4, -5)
C(3, 4); D(3, 5)
Anything that doesn't fall on x=2 or y=±3.

For "F" just pick a set of coordinates off to the side and label it

F(-3,-6)
F(-4, 8)
F(6, -7)

You can even use half values if you want:

(0.5, 3.2)
(1.2, -4.1)
(-9.1, -0.2)

As long as your plotted points meet the criteria:

C & D are Collinear
A, B, C, D, & F must not land on the same straight line.

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3 years ago