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3 years ago

What is 2/8 times 1/7 show step by step explanation

Mathematics

2 answers:

andrew11 [14]3 years ago

7 0

2/8 *1/7

Multiply the numerators together.

(2)(1)=2

Multiply the denominators together.

(8)(7)=56

2/56 - reduce

divide by 2 for the numerator and denominator

2/2=1

56/2=28

2/8 *1/7= 1/28 ( Answer)

agasfer [191]3 years ago

3 0

Answer:

Step-by-step explanation:

Alrighty, so you start off with 2/8 x 1/7, you just have to multiply across (2x1 (numerator) and 8x7 (denominator) and you will get 2/56.

Now, you have to simplify this fraction. The number 2 goes into both the numerator and denominator, so, divide 2 by 2 (1) and 56 divided by 2 (28).

Your answer should be 1/28.

Hope this helps! ^-^

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CD is perpendicular to AB and passes through point C5, 12).

Aleksandr-060686 [28]

Answer:

x intercept of CD = 17

Step-by-step explanation:

We are given a line AB with its end coordinates. and Another line segment CD which is perpendicular to AB. We have the coordinates of C , and we are asked to find the x intercept of line CD.

For that we need to find the equation of CD

we have coordinates of C , and hence if we have slope of CD we can find equation of CD

Slope of CD can be determine with the help of slope of AB as CD⊥ AB

So, the slope of CD $mCD = -\frac{1}{mAB}$

Hence we start from determining slope of AB

slope is given as

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

$m= \frac{14-(-3)}{7-(-10)}=\frac{17}{17}=1$

Hence $mAB=1$

There fore $mCD=-1$

(∵ Product of Slopes of two perpendicular lines is always -1)

Now we find the equation of CD with the help of slope -1 and coordinates of C(5,12)

$m=\frac{y-y_1}{x-x_1}$

$-1=\frac{y-12}{x-5}$

$-x+5=y-12$

$y=-x+17$

Hence we have our equation , now in order to find the x intercept we keep y = 0 in it and solve for x

$0=-x+17$

$x=17$

Hence the x intercept is 17

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