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3 years ago

18 divide by 2/3 ??????????

Mathematics

2 answers:

11111nata11111 [884]3 years ago

7 0

Answer:

Step-by-step explanation:

If you want to divide a fraction, you have to divide it from it's reciprocal.

The reciprocal of 2/3 is 3/2.

Now, you have to multiply 3 and 18

18 x 3/2 = 54/2

54 divided by 2 is 27.

Hope it helped :>

Fittoniya [83]3 years ago

4 0

Answer:

Step-by-step explanation:

2/3 = .6

18/.6 = 30

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The enrollment for a college last year was 2250 students, including 180 engineering majors. The enrollment for the college this

ki77a [65]

Answer:

this year

Step-by-step explanation:

This year, there were more students overall, and there were more engineering majors than last year. There were just more students this year overall than last year.

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3 years ago

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PLS HELP Given the following table with selected values of the linear functions g(x) and h(x), determine the x-intercept of g(h(

kiruha [24]

Using linear and composite functions, it is found that the x-intercept of g(h(x)) is $x = -\frac{5}{6}$ , given by option B.

-------------------------------

The equation of a line is:

$y = mx + b$

In which:

m is the slope.
b is the y-intercept.

Function g:

Two of the points are (-6,16) and (-4,10).
The slope is given by <u>change in y divided by change in x</u>, thus:

$m = \frac{10 - 16}{-4 - (-6)} = -3$

Thus:

$g(x) = -3x + b$

Point (-4,10) means that when $x = -4, g(x) = 10$ , and we use this to find b, so:

$10 = -3(-4) + b$

$12 + b = 10$

$b = -2$

Then

$g(x) = -3x - 2$

Function h:

Two of the points are (-6,-11) and (-4,-7).
The slope is:

$m = \frac{-7 - (-11)}{-4 - (-6)} = \frac{4}{2} = 2$

Thus:

$h(x) = 2x + b$

Point (-4,-7) means that when $x = -4, h(x) = -7$ , and we use this to find b, so:

$-7 = 2(-4) + b$

$-8 + b = -7$

$b = 1$

Then

$h(x) = 2x + 1$

The composite function is:

$g(h(x)) = g(2x + 1) = -3(2x + 1) - 2 = -6x - 3 - 2 = -6x - 5$

The x-intercept it the zero of the function, thus:

$-6x - 5 = 0$

$6x = -5$

$x = -\frac{5}{6}$

Which is option B.

A similar problem is given at brainly.com/question/21010520

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2 years ago

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Find the speed of the train if the the train travels 360 miles in 4 hours.

kozerog [31]

Answer:

90 mph

Step-by-step explanation:

To get miles per hour ( $m/h$ ), we just need to divide. $360/4$ gives us $90/1$ , meaning the train travelled 90 miles in one hour. This is the same as going 90 mph. Hope that explained things :)