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2 years ago

Is 2.5 : 8 and 7.5 : 24 equivalent?

Mathematics

2 answers:

mestny [16]2 years ago

7 0

Answer:

yes it is equivalent

because when we multiple 3

to both 2.5 and 8

then it will. 7.5:24

so, answer is yes

hope it helps

lions [1.4K]2 years ago

5 0

Answer:

Yes

Step-by-step explanation:

$\frac{2.5}{8} = \frac{7.5}{24} = \frac{5}{16}$

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1 year ago

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dimaraw [331]

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3 years ago

3. A line goes through the points (3,4) and (-3,6).

Galina-37 [17]

Answer:

Part a) The slope is $m=-\frac{1}{3}$

Part b) The equation in point slope form is $y-4=-\frac{1}{3}(x-3)$

Part c) The equation in slope-intercept form is $y=-\frac{1}{3}x+5$

Step-by-step explanation:

we have the points (3,4) and (-3,6)

Part a) What is the slope of the line?

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

substitute the given points

$m=\frac{6-4}{-3-3}$

$m=\frac{2}{-6}$

$m=-\frac{1}{3}$

Part b) Write the equation of the line in point-slope form

$y-y1=m(x-x1)$

we have

$m=-\frac{1}{3}$

$point\ (3,4)$

substitute

$y-4=-\frac{1}{3}(x-3)$ ---> equation in point slope form

Part c) Write the equation of the line in slope-intercept form

$y=mx+b$

we have

$y-4=-\frac{1}{3}(x-3)$

Isolate the variable y

distribute right side

$y-4=-\frac{1}{3}x+1$

Adds 4 both sides

$y=-\frac{1}{3}x+1+4$

$y=-\frac{1}{3}x+5$ ---> equation in slope intercept form

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2 years ago

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ehidna [41]

So first we need to find what percent of the students walk to school.

50 + 35 = 85% don't walk leaving only 15% that walk to school,

To find the 15% percent that DO walk we multiply .15 by the total number of people.

.15 x 1640 = 246 people walk to school

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3 years ago

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Find the area and perimeter of the shape below. Help plzzz.

kozerog [31]

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A=1/2*22/7*1.8*1.8
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Since the semi-circles are two and have the same radius, multiply the area of the first one by two or go through the same process again.
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