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3 years ago

Use the function f(x) = 5x^2 + 2x − 3 to answer the questions.

Mathematics

1 answer:

Sidana [21]3 years ago

8 0

A) (5x-3)(x+1)

B) $\frac{-2 \pm \sqrt{4+60}}{10} = \frac35 \text{or} -1$

C) it gets up really high

D) Plug values in of x to get y and plot!

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Simplify. -9c-(5-3c)

Sidana [21]

Answer:

-12c-5

Step-by-step explanation:

Step 1- Distribute into the parenthesis(Since there's nothing next to the parenthesis to multiply, there is a 1).

-9c-1(5-3c)

-9c-5(1)-3(1)c

Step 2- Multiply,

-9c-5-3c

Step 3- Add common variables.

(-9c-3c)-5

-12c-5

7 0

3 years ago

There is a 30% chance of snow tomorrow. What is the likelihood of the event given its probability

yanalaym [24]

The likelihood of getting snow tomorrow is unlikely. Although it depends on your current weather and your location

7 0

3 years ago

a psychologist contends that the number of facts of a certain type that are remembered after t hours is given by the following f

laiz [17]

Answer:

At t=1, Rate of Change=-36.86

At t=10 hours, Rate of Change =-0.0088

Step-by-step explanation:

The function which describes the number of facts of a certain type which are remembered after t hours is given as:

$f(t)=\frac{85t}{99t-85}$

To determine the Rate of Change at the given time, we first look for the derivative of f(t).

Applying quotient rule:

$f^{'}(t)=\frac{-7225}{{\left( 85 - 99\,t\right) }^{2}}$

At t=1

$f^{'}(1)=\frac{-7225}{(85-99)^{2}}$

=-36.86

At t=10 hours

$f^{'}(10)=\frac{-7225}{(85-99(10))^{2}}$

=-0.0088

4 0

4 years ago

I need help with these

muminat

Answer:

Step-by-step explanation:

are we solving this ?

3 0

4 years ago

The ratio of oil to vinegar in a certain dressing is 8:5 how much oil must be blended with 7 liters of vinegar

Eduardwww [97]

10 5/6 liters

Explanation:

Oil to Vinegar:

8 to 5

x=oil

x to 7 is the ratio you want to find

Cross multiply

8 to 5

x to 7

you would get 56=5x

Divide and get x=10 5/6

6 0

3 years ago