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3 years ago

Please help with 47-50

Mathematics

2 answers:

Tems11 [23]3 years ago

7 0

Answer:

-3

Step-by-step explanation:

bonufazy [111]3 years ago

5 0

47.) 0,-2
48.) 0,-5
49.) -5,-8.5
50.) 3, 0.75
51.) 0, -3
52.) 0,-2.5
The axis of symmetry is the top or bottom of the “U” shaped graph and I always put the equations into Desmos

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Please please please please please please please please please please please please please answer

Mademuasel [1]

The answer is A. You can check by plugging in the numbers for x.

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3 years ago

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Suppose f(x) = mx + b. What is the inverse function in terms of m and b?

katrin2010 [14]

Answer:

f^(-1)(x) = (x-b)/m or x/m - b/m

Step-by-step explanation:

f(x) = y = mx + b

To find the inverse function, interchange x and y and solve for y, i.e.

x = my + b

my = x-b

y = (x-b)/m = x/m - b/m

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2 years ago

If the function f(x)=-1/2x-7 were graphed, which of the following is true? hurry I have 10 minutes

jeka94

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2 years ago

A recent survey concluded that the proportion of american teenagers who have a cell phone is 0.27. the true population proportio

Jet001 [13]

Answer:

The mean for the sampling distribution of the sample proportion is 0.29

The standard deviation for the sampling distribution of the sample proportion is 0.01435

Step-by-step explanation:

The mean for the sampling distribution of the sample proportion is always equal to the true population proportion, in this case; p = 0.29

The standard deviation for the sampling distribution of the sample proportion is calculated as;

$\sqrt{\frac{p(1-p)}{n} }$

Using the given values;

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4 0

3 years ago

4/5w-12=2/3w<br> what is the step by step answer to those equation?

Mariulka [41]

Kulay, there is no such thing as a "step by step answer" here. You seem to want a "step by step solution."

I must assume that by 4/5 you actually meant (4/5) and that by 2/3 you meant (2/3). Then your equation becomes:

(4/5)w - 12 = (2/3)w.

The LCD here is 5*3, or 15, so mult. every term by 15:

12w - 180 = 10w.
Add 180 to both sides, obtaining 12 w - 180 + 180 = 10w + 180.

Then 12w = 10w + 180. Simplifying, 2w = 180. What is w?

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3 years ago