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3 years ago

Evaluate 23x-1 for x = 1.

1 answer:

7 0

Using the order of operations (PEMDAS)...

23 · 1 - 1 = ?
23 - 1 = ?
22

The answer is 22

Hopefully this helps! If you have any more questions or don't understand, feel free to DM me, and I'll get back to you ASAP! :)

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This number is in scientific notation. 2. 4 × 10-4 Convert the number into standard notation. What is the value? 2. 4 × 10-4 =.

Dimas [21]

2.4x10^-4 = 0.00024

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2 years ago

A test to determine whether a certain antibody is present is 99.1% effective. This means that the test will accurately come bac

avanturin [10]

Answer:

The probability that all the six people will test negative for the antibody is 0.9472.

The probability that the test comes back positive for at least one of the six people is 0.0528

Step-by-step explanation:

Consider the provided information.

probability that antibody is present will be effective is 99.1% and not present is 99.1% of the time.

Part (A)What is the probability that the test comes back negative for all six people? 

Let P(X)= P(Antibody not present)

We want test comes back negative for all six that means antibody is present for all six. Thus X=0

$P(X=0)=0.991\times0.991\times0.991\times0.991\times0.991\times0.991\\P(X=0)=0.9472$

The probability that all the six people will test negative for the antibody is 0.9472.

Part (B) What is the probability that the test comes back positive for at least one of the six people?

$P(X \geq1)=1-P(X=0)$

$P(X \geq1) = 1-0.9472$

$P(X \geq1) = 0.0528$

Hence, the probability that the test comes back positive for at least one of the six people is 0.0528

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3 years ago

A telephone pole is 24 feet tall. A support cable is attached to the top of the pole to keep the pole from leaning. The stake fo

Kisachek [45]

Answer:

Step-by-step explanation:

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3 years ago

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What does it mean if the rate of an airplane is modeled by the function f(x) = 1x + 500?

Julli [10]

The questions seems to be lacking some information. By rate I'm going to assume position and in that scenario the answer would be B because the position function is modeled by a linear function.

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3 years ago

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Write an equation of the line that passes through the given point and has the giver slope. (2,4), slipe 2

Katena32 [7]

Slope-intercept form:

y = mx + b

"m" is the slope, "b" is the y-intercept (the y value when x = 0)

Since you know m = 2, you can plug it into the equation

y = mx + b

y = 2x + b

To find "b", plug in the point (2,4) into the equation

y = 2x + b

4 = 2(2) + b

4 = 4 + b Subtract 4 on both sides

0 = b

y = 2x + 0

y = 2x

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2 years ago