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2 years ago

9

which angles are complementary to <2. Select all that apply. 3,5,4 and 1 are all the answer choices

2 answers:

Blizzard [7]2 years ago

8 0

Answer:

only angle 3

Step-by-step explanation:

complementary angles form 90 degree angles.

the only angle that forms a 90 degree angle with angle 2 is angle 3.

erica [24]2 years ago

5 0

<u>Answer:</u>

∠3 is complementary to ∠2

<u>Explanation:</u>

Complementary angles are two angles that sum up to 90°. We already know that ∠2 and ∠x (Unknown angle) must sum up to 90°. We can see that ∠3 is less than 90°, it is adjacent to ∠2, and both angles sum up to 90°. Hence, ∠3 is complementary to ∠2.

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What is the product of (1.9*10^-3)(2*10^4)

RoseWind [281]

Answer:

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Step-by-step explanation:

I'm sorry I do not have the product

4 0

3 years ago

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What is the area of this triangle ?

oee [108]

Answer:

Area of triangle is 9.88 units^2

Step-by-step explanation:

We need to find the area of triangle

Given E(5,1), F(0,4), D(0,8)

We will use formula:

$Area\,\,of\,\,triangle =\sqrt{s(s-a)(s-b)s-c)} \\where\,\, s = \frac{a+b+c}{2}$

We need to find the lengths of side DE, EF and FD

Length of side DE = a = $\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}$

Length of side DE = a = $=\sqrt{(5-0)^2+(1-8)^2}\\=\sqrt{(5)^2+(-7)^2}\\=\sqrt{25+49}\\=\sqrt{74}\\=8.60$

Length of side EF = b = $\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}$

Length of side EF = b = $=\sqrt{(0-5)^2+(4-1)^2}\\=\sqrt{(-5)^2+(3)^2}\\=\sqrt{25+9}\\=\sqrt{34}\\=5.8$

Length of side FD = c = $\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}$

Length of side FD = c = $=\sqrt{(0-0)^2+(8-4)^2}\\=\sqrt{(0)^2+(4)^2}\\=\sqrt{0+16}\\=\sqrt{16}\\=4$

so, a= 8.60, b= 5.8 and c = 4

s = a+b+c/2

s= 8.6+5.8+4/2

s= 9.2

Area of triangle= $=\sqrt{s(s-a)(s-b)s-c)}\\=\sqrt{9.2(9.2-8.6)(9.2-5.8)(9.2-4)}\\=\sqrt{9.2(0.6)(3.4)(5.2)}\\=\sqrt{97.5936}\\=9.88$

So, area of triangle is 9.88 units^2

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4 years ago

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4 years ago

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If you can help 1-12 that’s great if not just help with what you can thanks

bearhunter [10]

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3 years ago