3 years ago

Someone help me with this ?

Mathematics

1 answer:

musickatia [10]3 years ago

5 0

$\dfrac a 2 = \dfrac b 3$

$\dfrac 3 2 = \dfrac b a$

Final answer: $\qquad \dfrac 3 2$

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What is the value of -2xy if x = -1 and y = 6? 8 12 26 -12

Elena L [17]

12 would be your answer
-2*-1= 2
2*6=12
so 12

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3 years ago

It is estimated that there are 22 deaths for every 10 million people who use airplanes. A company that sells flight insurance pr

Alex Ar [27]

Answer:

The insurance company can make $0.78 for each policy that it sells

Step-by-step explanation:

The loss incurred to the insurance company for each death claim is:

$L = \$1-\$100,000=-\$99,999$

This event has a 22 in 10 million probability of happening.

The gain for the company for each policy not claimed is:

$G= \$1$

This event has a 9,999,978 in 10 million probability of happening.

The expected value is:

$EV =\$1*\frac{9,999,978}{10,000,000} -\$99,999*\frac{22}{10,000,000} \\EV=\$0.78$

Therefore, over the long run, the insurance company can make $0.78 for each policy that it sells.

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3 years ago

What is a scalene triangle?

Katen [24]

A scalene triangle is a triangle with no sides equal. Consequently, all the angles are not equal as well.

When all the sides are equal, it's called an equilateral triangle.
When two sides are equal, it's called an isosceles triangle.

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4 years ago

Read 2 more answers

Solve the following quadratic function by using the quadratic formula: x^2 + 2x - 1 = 2 *

elena55 [62]

Answer:

x = 1 or x = -3

Step-by-step explanation:

$ax^{2}$ + bx + c = 0

x = $\frac{-b±\sqrt{b^{2}-4ac } }{2a\\}$

as $x^{2}$ + 2x - 1 = 2 ⇔ $x^{2}$ + 2x - 3 = 0, its solution is

x = $\frac{-2±\sqrt{2^{2}-4 *1*(-3)} }{2*1}$

= $\frac{-2±\sqrt{4+12} }{2}$ = $\frac{-2±\sqrt{16} }{2}$ = $\frac{-2±\ 4 }{2}$

therefore, x = 1 or x = -3

hope this helps! :D

have a miraculous day, and brainliest is immensely appreciated!! <3

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3 years ago

How to find equation of a curve

nadya68 [22]

I think it is based x height

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3 years ago