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3 years ago

K-12 Algebra 2. PLEASE HELP! 25 points

Mathematics

1 answer:

strojnjashka [21]3 years ago

6 0

Answer:

A. how much of the students time is spent on social media during school hours.

B. By using some kind of selection technique Like Having students draw number from a hat, who ever have the specific numbers will take her survey.

C. The population for Sofies research would be a rate of 5/2. For every 5 people who take the survey only 2 turned it in.

D. She would conclude that 1 out of every 2 or 50 percent of students use social media while doing school work.

Step-by-step explanation:

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F(x)=x^2-3x-2 is shifted 4 units left. The result is g(x) what is g(x)

grandymaker [24]

To solve this problem you must apply the proccedure shown below:

1. If the function $f(x)=x^{2}-3x-2$ is shifted $4$ units left, this means that you must substitute the value of $x$ by $x+4$ to find $g(x)$ , as following:

$f(x+4)=(x+4)^{2}-3(x+4)-2$

2. Now, expand the function:

$f(x+4)=x^{2} +8x+16-3x-12-2\\ f(x+4)=x^{2} +5x+2$

3. Then, you have that $g(x)$ is:

$g(x)=x^{2} +5x+2$

Therefore, the answer is: $g(x)=x^{2} +5x+2$

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4 years ago

Formula for the area of a triangular prisim

Artemon [7]

Idk cause i am stuck

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3 years ago

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If the campers at Camp Grilled Meat prefer hot dogs to hamburgers by a ratio of 4:3, and they need 500 hot dogs, how many hambur

Morgarella [4.7K]

Answer:

375

Step-by-step explanation:500 equals 100% divide by 4 its 125 times 3 equals 375, your welcome

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3 years ago

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What is the equation of the line

olga2289 [7]

Answer:

It's the first choice y = (-5/2)x - 1.

Step-by-step explanation:

First find the slope of the line 5x + 2y = 12 by converting to slope-intercept form.

5x + 2y = 12

2y = -5x + 12

y = (-5/2)x + 6 so the slope is (-5/2).

The line we require had also a slope of -5/2 because it is parallel to the first line and it also passes through the point (-2, 4). So:

y - 4 = (-5/2)(x - -2) (the point-slope form)

y - 4 = (-5/2)(x + 2)

y = (-5/2)x - 5 + 4

y = (-5/2)x - 1 (answer)

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3 years ago

C) Three yam tubers are chosen at random from 15 tubers of which 5 are spoilt. Find the probability that, of the three chosen tu

Dmitry_Shevchenko [17]

$\displaystyle\\|\Omega|=\binom{15}{3}=\dfrac{15!}{3!12!}=\dfrac{13\cdot14\cdot15}{2\cdot3}=455$

$\displaystyle\\|A|=\binom{10}{3}=\dfrac{10!}{3!7!}=\dfrac{8\cdot9\cdot10}{2\cdot3}=120\\\\P(A)=\dfrac{120}{455}=\dfrac{24}{91}\approx26.4\%$

$\displaystyle\\|A|=\binom{5}{3}=\dfrac{5!}{3!2!}=\dfrac{4\cdot5}{2}=10\\\\P(A)=\dfrac{10}{455}=\dfrac{2}{91}\approx2.2\%$

$\displaystyle\\|A|=\binom{10}{2}\cdot5=\dfrac{10!}{2!8!}\cdot5=\dfrac{9\cdot10}{2}\cdot5=225\\\\P(A)=\dfrac{225}{455}=\dfrac{45}{91}\approx49.5\%$

$A$ - at least one is spoilt

$A'$ - none is spoilt

$P(A)=1-P(A')$

We calculated $P(A')$ in a).

Therefore

$P(A)=1-\dfrac{24}{91}=\dfrac{67}{91}\approx73.6\%$

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2 years ago