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3 years ago

Using the function below, evaluate f(-2). * 2 points f(x) = 3x? - 5x - 2

1 answer:

monitta3 years ago

6 0

Okay so I'm guessing that they are two different formulas the f(x)= 3x and the f(x)= -5x-2. If that's is true then you would just have to plug in -2 to the x's. So then it would be f(x)= 3(-2) which if you solve it would give you f(x)= -6 and for the second one it would be f(x)= -5(-2)-2 so then you would solve for it and get f(x)= 8.

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Solve this equation using elimination: 2X + 3Y = 16 6X - 5Y = 20

Liono4ka [1.6K]

Another bag of marbles contains 6 blue marbles and 1 green marble. Mary and Frank will draw a blue marble followed by a green marble, without replacing the first marble. Mary says the probability will be 649, and Frank says that the probability will be17 . Who is correct?

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3 years ago

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Find the log of 232.92 29.32 0.00032

loris [4]

sorry mate

i don't know

!!!!!!!!!!!!!

thanks for points

lol

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3 years ago

What is the value of x in -5x-(-7-4x)-2(3x-4)

Otrada [13]

Answer:

x = 1

Step-by-step explanation:

-5x-(-7-4x)-2(3x-4)

-5x + 7 - 4x - 6x + 8 First step is to factor all the numbers out so you have no parenthesis. In this case -(-7 just turns into + 7 because two negatives equal a positive. As well as -2*3x and -2*-4 which gives you -6x + 8.

-15x + 15 In this step you combine like terms.

-15x = -15 Next you move the whole number to the other side of the equation by subtracting it from both sides.

x = 1 Finally you divide -15 by -15 to get x by its self.

3 0

4 years ago

Karen wants to advertise how many chocolate chips are in each big chip cookie at her bakery. she randomly selects a sample of 69

Tomtit [17]

Answer: $(10.1989,\ 11.0011)$

Step-by-step explanation:

Given : Sample size : n=69

Sample mean : $\overline{x}=10.6$

Standard deviation : $s=1.7$

Significance level : $\alpha:1-0.95=0.05$

Then , Critical value : $z_{\alpha/2}=1.96$

The formula to confidence interval is given by : -

$\overline{x}\pm z_{\alpha/2}\dfrac{s}{\sqrt{n}}\\\\\Rightarrow\ 10.6\pm (1.96)\dfrac{1.7}{\sqrt{69}}\\\\\approx10.6\pm0.4011=(10.6-0.4011,10.6+0.4011)=(10.1989,\ 11.0011)$

Hence, the 95% confidence interval for the number of chocolate chips per cookie for big chip cookies= $(10.1989,\ 11.0011)$

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4 years ago

The sum of two numbers is 82 and their difference is 26. find each of the numbers.

Zarrin [17]

54 because if x+y=82 and x-y=26 add 26 and 82 is 108 the divide it by 2 your answer is 54

7 0

4 years ago

Read 2 more answers