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4 years ago

5 stars and brainliest

Mathematics

1 answer:

s2008m [1.1K]4 years ago

8 0

Answer:

$C) \: x > 1$

Step-by-step explanation:

$- 3 + 5x < 7x - 5 \\ \Leftrightarrow 7x - 5x > 5 - 3 \\ \Leftrightarrow 2x > 2 \\\Leftrightarrow x > 1$

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9x² – 4<br> Factor the quadratic completely

alukav5142 [94]

Answer:

(3x - 2)*(3x + 2)

Step-by-step explanation:

I don't know how much more i can explain, except that you could use the quadratic formula to get your zeroes and then put it in your answer. But this one is obvious. Whenever there isn't an x term and you're subtracting the constant term, it's usually (ax - b)(ax + b)

5 0

3 years ago

In a study of computer use, 1000 randomly selected Canadian Internet users were asked how much time they spend using the Interne

Dvinal [7]

Answer:

b. Do not reject H0. We do not have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.7 hours.

Step-by-step explanation:

Given that in a study of computer use, 1000 randomly selected Canadian Internet users were asked how much time they spend using the Internet in a typical week. The mean of the sample observations was 12.9 hours.

$H_0: \bar x =12.7\\H_a: \bar x >12,7$

(Right tailed test at 5% level)

Mean difference = 0.2

Std error = $\frac{6}{\sqrt{1000} } \\=0.1897$

Z statistic = 1.0540

p value = 0.145941

since p >alpha we do not reject H0.

b. Do not reject H0. We do not have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.7 hours.

5 0

3 years ago

\int \frac{x}{\left(1-x^2\right)^{\frac{3}{4}}}dx

Paraphin [41]

Answer:

x 5/4 y 10/3 over 2

Step-by-step explanation:

7 0

3 years ago

I REALLY need help!!!!!

zheka24 [161]

A slope of 3/2 passing through (-3,0) gives us slope intercept form of

y - 0 = (3/2) (x - -3)

y = (3/2) x + 9/2

That's a y intercect of 9/2

Choice D

8 0

4 years ago

Max practices the piano and the guitar for a total of 150 minutes every day. He practices the guitar for 80 minutes longer than

AlladinOne [14]

Answer:

Award Brainliest to this answer :)

Step-by-step explanation:

1 / p + g = 150

g - 80 = p => p - g = - 80

2 / Adding the equations eliminates g and gives 2p = 70, p = 35

Back substituting to the 1st Equation; 35 + g = 150 => g = 115

3 / No, not if the stated conditions remain.

5 0

3 years ago