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3 years ago

Addition fact of 12-4

Mathematics

2 answers:

Fiesta28 [93]3 years ago

8 0

I Think It Is 8. Onstaly

KonstantinChe [14]3 years ago

4 0

Answer: It is 8. Im sure thats the answer.

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Plz help dont get it

san4es73 [151]

You have to divide the numerators by the denominators. Like for 1/2, you would do 1.0 divided by to which is 0.5. Hope this helps

4 0

3 years ago

Read 2 more answers

Find equation of straight line which

kenny6666 [7]

Answer:

The required equation is: $y = -\frac{8}{5}x+\frac{127}{25}$

Step-by-step explanation:

The slope-intercept form of a line is given by:

$y = mx+b$

For writing equation of a line, slope and a point is needed from which the line passes.

In order to find the slope of line perpendicular to PQ, we have to find slope of PQ first.

Slope is denoted by m and given by the formula

$m = \frac{y_2-y_1}{x_2-x_1}$

Given points are:

P(-1, -4) and Q (7, 1)

Putting the values

$m = \frac{1-(-4)}{7-(-1)}\\m = \frac{1+4}{7+1} = \frac{5}{8}$

The product of slope of two pependicular lines is -1

Let m1 be the slope of line perpendicular to PQ

$m.m_1 = -1\\\frac{5}{8}.m_1 = -1\\m_1 = \frac{8}{5} * -1\\m_1 = -\frac{8}{5}$

Now for the point, we have to find the point that divides PQ in ratio 3:2

The formula is:

$(x,y) = (\frac{nx_1+mx_2}{m+n} , \frac{ny_1+my_2}{m+n})\\$

Here

m = 3

n= 2

Putting the values

$(x,y) = (\frac{(2)(-1)+(3)(7)}{3+2} , \frac{(2)(-4)+(3)(1)}{3+2})\\= (\frac{-2+21}{5} , \frac{-8+3}{5})\\=(\frac{19}{5} , \frac{-5}{5})\\=(\frac{19}{5} , -1)$

So we have to write equation of a line with slope -8/5 and passing through point (19/5, -1)

Putting the values in slope-intercept form

$y = -\frac{8}{5}x +b$

Putting the point in the equation

$-1 = -\frac{8}{5} (\frac{19}{5}) + b\\-1 = -\frac{152}{25} + b\\b = -1+\frac{152}{25}\\b = \frac{-25+152}{25}\\b = \frac{127}{25}$

Putting the value of b

$y = -\frac{8}{5}x+\frac{127}{25}$

Hence,

The required equation is: $y = -\frac{8}{5}x+\frac{127}{25}$

8 0

2 years ago

One - third the difference between 3/4 and 1/5

navik [9.2K]

a: 1/20

b: -11/60

c: 11/60

d: 1/45

Hope this helps!

5 0

3 years ago

Read 2 more answers

If Mrs Murphy separates her class into groups of 4 students each, 1 student is left over. If she separates her class into groups

guapka [62]

The question means that when the number is 1 more than a multiple of 4 and two more than a multiple of 5. Write out multiples of 4 with one added on to them.
5,9,13,17,21,
Then write out multiples of 5 with one added on to them
7,12,17,22,
The smallest number that both lists share is 17, so that is the answer

6 0

3 years ago

A line passes through the points (1,2) and (–5,1).

faltersainse [42]

Answer:

y-2=1/6(x-1)

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(1-2)/(-5-1)

m=-1/-6

m=1/6

y-y1=m(x-x1)

y-2=1/6(x-1)

4 0

2 years ago