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Alla [95]
3 years ago
6

What is the product? (x+3)(2x - 1) 2x²-3 2x²+66 O 2x²+5x-3 2x²+6x-3

Mathematics
1 answer:
Bess [88]3 years ago
5 0
It’s 2x^2 + 5x - 3.
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Simplify Rewrite the expression in the form 5 ^ n. (5/10)/(5/12) =
Amiraneli [1.4K]

Answer:

5^{-2}

Step-by-step explanation:

5^{(10-12)}

5 0
3 years ago
A study of recent records of car accidents revealed that average proportion of drivers who were distracted by their phones at th
aksik [14]

Answer:

At least 547 records need to be studied.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence interval 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

Z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

And the margin of error is:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

95% confidence interval

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so z = 1.96.

In this problem, we have that:

M = 0.04, p = 0.35

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

0.04 = 1.96\sqrt{\frac{0.35*0.65}{n}}

0.04\sqrt{n} = 0.93486

\sqrt{n} = 23.37

n = 546.2275

At least 547 records need to be studied.

6 0
3 years ago
What is the slope of y=3x and what's the Y-intercept of y=3x
kompoz [17]
The slope is 3 or 3/1 and the Y intercept is 0 or (0,0) because in y=mx+b, is it the slope (3) and b is the y intercept (0)
4 0
3 years ago
-4/5 to the power of 2 times -3/50
Crazy boy [7]
=(-4/5)^2 * -3/50
square -4/5 first; remember -4/5^2 is the same as -4/5 * -4/5

=(-4/5 * -4/5) * -3/50
multiply -4 numerators; multiply 5 denominators

=(-4 * -4)/(5 * 5) * -3/50

=16/25 * -3/50
multiply numerators 16 & -3; multiply denominators 25 & 50

=(16 * -3)/(25 * 50)
= -48/1250

simplify by 2
= -24/625 (or -0.0384)


ANSWER: -24/625 (or -0.0384)

Hope this helps! :)
6 0
3 years ago
Read 2 more answers
Radius and diame
makvit [3.9K]

Answer:

d = 4 units

Step-by-step explanation:

The diameter is twice the radius

d = 2r

d = 2(2)

d = 4 units

5 0
3 years ago
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