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2 years ago

An environmentalist wants to find out the fraction of oil tankers that have spills each month.

Mathematics

1 answer:

Anastasy [175]2 years ago

3 0

Answer:

The estimate of the proportion of oil tankers that had spills is 0.25.

Step-by-step explanation:

Proportion of oil tankers that had spills:

1036 tankers.

777 did not have spills.

So 1036 - 777 = 259 had spills.

The proportion is:

$p = \frac{259}{1036} = 0.25$

The estimate of the proportion of oil tankers that had spills is 0.25.

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Most males preferred black laptops

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2 years ago

How do you graph y=-(x+4)(x+7)

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Plz help me to solve this question

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Step-by-step explanation:

diagonals of the rhombus bisect each other at right angles .

5a = 90

a = 90/5 = 18

in ∆ OCD:

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Find the equation of the line that is perpendicular to x - 3y = 6 and passes through the point (-2, -7)

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Answer: y = -3x - 1

The steps to find the equation are as follow:
1. Find the slope
2. Plug the slope into the general equation, y = mx + c
3. Find the y-intercept
4. Plug the y-intercept into the equation we created in step 2
And that will give us the equation of the line

-------------------------------------------
Find the slope
-------------------------------------------
x - 3y = 6 ←Rearrange the equation to matches the format y = mx + c

3y = x - 6 ←divide by 3 through
÷3 ÷3 ÷3

y =1/3x - 2

Sope = 1/3

Slope of the perpendicular line = - 3 (negative reciprocal)

--------------------------------------------------------------------------------------
Plug in the value of the slope into the general equation y = mx + c
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y = mx + c
y = -3x + c

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Find the y-intercept
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y = -3x + c

At coordinate (-2, -7)

-7 = 3(-2) + c ←substitute x = -2 and y = -7

-7 = -6 + c ← add 6 to both side
+6 +6

c = -1

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Plug the value of the y-intercept into the equation y = -3x + c
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y = -3x + c
y = -3x -1

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Answer: y = -3x - 1
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3 years ago

The scale on a map is 1 in : 50mi. The actual distance between the two cities is 350 miles. What is the distance between the cit

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350/50 = 7

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