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gtnhenbr [62]
3 years ago
13

ABCD is a trapezium. DC = 3AB DA= (3) DB (1) Find the exact magnitude of BC.

Mathematics
1 answer:
Whitepunk [10]3 years ago
5 0
The exact mangitude of the BC would be
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Answer:

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3 years ago
A line passes through the points (-6, 4) and (-2, 2). Which is the equation of the line?
cupoosta [38]

Answer:

\displaystyle y=-\frac{1}{2}x+1

Step-by-step explanation:

The equation of any line in slope-intercept form is:

y=mx+b

Being m the slope and b the y-intercept.

Assume we know the line passes through points A(x1,y1) and B(x2,y2). The slope can be calculated with the equation:

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

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\displaystyle m=\frac{2-4}{-2+6}=\frac{-2}{4}=-\frac{1}{2}

The equation of the line is, so far:

\displaystyle y=-\frac{1}{2}x+b

To calculate the value of b, we use any of the given points, for example (-6,4):

\displaystyle 4=-\frac{1}{2}(-6)+b

\displaystyle 4=3+b

Solving:

b = 1

The equation of the line is:

\boxed{\displaystyle y=-\frac{1}{2}x+1}

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8 0
3 years ago
The average of 4 numbers is 5. What is their sum? explain you answer
maxonik [38]
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Answer:Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar.

Quincy spends  of his pocket money on snacks to keep in his locker. Write the fraction  in decimal form.

The decimal equivalent of  is .

Step-by-step explanation:Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar.

Quincy spends  of his pocket money on snacks to keep in his locker. Write the fraction  in decimal form.

The decimal equivalent of  is .

7 0
3 years ago
Read 2 more answers
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