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3 years ago

Find the midpoint of the line segment joining the points R(2,4) and S(- 4,7).

Mathematics

1 answer:

Kitty [74]3 years ago

3 0

Answer:

Midpoint: (-1, 11/2)

Step-by-step explanation:

Use the formula: (X1+X2)/2, (Y1+Y2)/2

(2-4)/2 , (4+7)/2

-2/2 , 11/2

(-1, 11/2)

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Step-by-step explanation:

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3 years ago

If x varies directly as d and d varies directly as e and c=4 when e=12, find c where e=3

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4 years ago

What is the perimeter of triangle ABC ? 11 units 14 units 16 units 20 units Coordinate graph showing triangle A B C. Triangle A

professor190 [17]

Answer:

The perimeter is equal to $16\ units$

Step-by-step explanation:

we have that

$A(-1,1),B(2,5),C(5,1)$

The perimeter of triangle ABC is equal to

$P=AB+BC+AC$

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

step 1

Find the distance AB

$A(-1,1),B(2,5)$

$AB=\sqrt{(5-1)^{2}+(2+1)^{2}}$

$AB=\sqrt{(4)^{2}+(3)^{2}}$

$AB=\sqrt{25}$

$AB=5\ units$

step 2

Find the distance BC

$B(2,5),C(5,1)$

$BC=\sqrt{(1-5)^{2}+(5-2)^{2}}$

$BC=\sqrt{(-4)^{2}+(3)^{2}}$

$BC=\sqrt{25}$

$BC=5\ units$

step 3

Find the distance AC

$A(-1,1),C(5,1)$

$AC=\sqrt{(1-1)^{2}+(5+1)^{2}}$

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step 4

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4 0

3 years ago

Read 2 more answers

What do I use to find the answer?

Volgvan

Answer:

164 Yards

Step-by-step explanation:

With the information in this problem, we need to assume that triangle ADE and ABC are similar, otherwise we would not have enough information to solve it.

1. AE/DE=AC/BC (Since the triangles are similar, the corresponding parts will have the same ratio. In other words, you should be able to multiply the length of any side in one triangle by the same number and get a side length of the similar triangle.)

2. AE/DE=(AE+EC)/BC (Rewrite side length AC as the sum of its parts)

3. 230/120=(230+85)/BC (Insert the values given for each side length into the equation)

4. 230/120=315/BC (Add 230 and 85)

5. 230*BC=315*120 (Cross multiply)

6. BC=315*120/230 (Divide each side by 230 to isolate BC)

7. BC=164.347826... (Plug the equation into a calculator)

8. BC=164 (Since the problem asks to round to the nearest yard and the number in the tenths place is below 5, round your answer down to 164)

btw definitely ignore that guy posting links

please lmk if i made any errors, hope this helps!!!

7 0

3 years ago

What is the distance

Troyanec [42]

Answer:

31 units

Step-by-step explanation:

Wrt distance formula

√(20-(-11))^2 +(-17-(-17))^2

=√(31)^2+(0)2

=√961+0

=√961

=31

7 0

3 years ago

Find the midpoint of the line segment joining the points ​R(2​,4​) and ​S(- 4​,7​).

Find the midpoint of the line segment joining the points R(2,4) and S(- 4,7).