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3 years ago

WILL MARK BRAINLEST Select the correct answer.

Mathematics

1 answer:

Ivan3 years ago

3 0

Answer:

the median is 139

Step-by-step explanation:

there are 19 numbers in the data set. Therefore, the 10th number would be the median.

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Using the quadratic formula to solve 5x = 6x²-3, what are the values of x?

Salsk061 [2.6K]

Answer:

$\boxed{\sf{x = \frac{5 \pm \sqrt{97} }{12} }}$

Step-by-step explanation:

$\sf{5x = 6 {x}^{2} - 3 }$

$\sf{0 = 6 {x}^{2} - 3 - 5x }$

$\sf{0 = 6 {x}^{2} - 5x - 3 }$

a = 6
b = - 5
c = - 3

$\sf{x = \frac{ - b \pm \sqrt{ {b}^{2} - 4ac} }{2a} }$

$\sf{x = \frac{ - ( - 5) \pm \sqrt{ { - 5}^{2} - 4(6)( - 3)} }{2(6)} }$

$\sf{x = \frac{5 \pm \sqrt{ 25 + 72} }{12} }$

$\sf{x = \frac{5 \pm \sqrt{97} }{12} }$

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2 years ago

A hairdresser is deciding where to open her own studio. If the hairdresser chooses Location A, she will pay $1200 per month in r

Ymorist [56]

She will need to cut 26.6 haircuts a month a location A to break even (1200/45 = 26.6) so roughly 27 haircuts to make a profit

She will need to cut 30 haircuts at location B to break even (1800/60 = 30) and 31 hair cuts to see a profit.

She will need to cut 30.67 haircuts at location A and 33 haircuts at location B to make the same profit at either location (Roughly $180).

30.67 x 45 = 1380.15 - 1200 = 180

33 x 60 = 1980 - 1800 = 180

7 0

4 years ago

Given that a box has 3 blue marbles, 2 red marbles, and 4 yellow marbles, use the probability formulas to answer the following q

charle [14.2K]

Answer:

drawing a blue marble is a harder then the yellow but not as hard as the red.

5 0

3 years ago

According to wildlife experts, the rate at which crickets chirp per minute is a function of the temperature in degrees Fahrenhei

ozzi

Answer:

Step-by-step explanation:

We will let the x coordinates be the temp and the y coordinates by the number of chirps. Our coordinates then will look like this:

(60, 84) and (85, 184). If this is linear, then first we will find the slope of the line which will tell us, in the context of this problem, how many chirps a cricket gives per 1 degree of temp increase.

The slope formula is:

$m=\frac{y_2-y_1}{x_2-x_1}$ and filling in our numbers:

$m=\frac{184-84}{85-60}=\frac{100}{25}= 4$

This means that for every 1 degree temp increase, a cricket will give 4 chirps. That's the m value in y = mx + b. Now we will pick one of the coordinates, doesn't matter which one, and use those x and y values in the point-slope form of a line to get the equation. I will choose (60, 85), just because. Using the other point will give you the exact same line equation, I PROMISE!

Using 85 as y1 and 60 as x1 in

y - y1 = m(x - x1) gives us

y - 85 = 4(x - 60) and

y - 85 = 4x - 240 and

y = 4x - 240 + 85 and

y = 4x - 155

5 0

3 years ago

URGENT!!

Dmitry [639]

Answer:

Supplementary angles add to 180. Let x = the measure of one angle. The other is three and one half times larger, or 3.5x:

x + 3.5x = 180

Step-by-step explanation:

6 0

3 years ago