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2 years ago

The measure of an angle is 3.3°. What is the measure of its supplementary angle?

Mathematics

2 answers:

puteri [66]2 years ago

7 0

Answer: The supplement of an angle is 60 less than 3 times the measure of the complement.

Step-by-step explanation:

-Dominant- [34]2 years ago

4 0

a supplementary angle is thrice as much as the complementary angle.

Not sure but hope it helped :)

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2 years ago

Please help! I am confused

Levart [38]

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3 years ago

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trapecia [35]

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3 years ago

an isosceles triangle has congruent sides of 20cm. the base is 10cm. find the height of the triangle.

dolphi86 [110]

Answer:

$\large\boxed{A_\triangle=25\sqrt{15}\ cm^2}$

Step-by-step explanation:

Look at the picture.

The formula of an area of a triangle:

$A_\triangle=\dfrac{bh}{2}$

b - base

h - height

We need a length of a height.

Use the Pythagorean theorem:

$leg^2+leg^2=hypotenuse^2$

We have:

$leg=5,\ leg=h,\ hypotenuse=20$

Substitute:

$5^2+h^2=20^2$

$25+h^2=400$ subtract 25 from both sides

$h^2=375\to h=\sqrt{375}\\\\h=\sqrt{(25)(15)}\\\\h=\sqrt{25}\cdot\sqrt{15}\\\\h=5\sqrt{15}\ cm$

Calculate the area:

$A_\triangle=\dfrac{(10)(5\sqrt{15})}{2}=\dfrac{50\sqrt{15}}{2}=25\sqrt{15}\ cm^2$

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3 years ago

Solve for y ; -2y - 2x =4

Deffense [45]

I think this is what you want to do

Your welcome

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