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sdas [7]
2 years ago
11

I will mark branliest please

Mathematics
2 answers:
Greeley [361]2 years ago
5 0

Answer:

1.) Right

2.)Acute

3.) obtuse

Step-by-step explanation:

enot [183]2 years ago
3 0

Answer:

1.right

2.acute

3.obtuse

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If the smallest angle of a triangle is 20° and it is included between sides of 4 and 7, then (to the nearest tenth) the smallest
lawyer [7]

Answer:

3.5

Step-by-step explanation:

The smallest side of a triangle is formed by the smallest angle in the triangle.

To find the side opposite (formed by) the 20 degree angle, we can use the Law of Cosines. The Law of Cosines states that for any triangle, c^2=a^2+b^2-ab\cos \gamma, where a, b, and c are the three sides of the triangle and \gamma is the angle opposite to c.

Let c be the side opposite to the 20 degree angle.

Assign variables:

  • a\implies 4
  • b\implies 7
  • \gamma \implies 20^{\circ}

Substituting these variables, we get:

c^2=4^2+7^2-2(4)(7)\cos 20^{\circ},\\c^2=16+49-56\cos 20^{\circ},\\c^2=12.377213236,\\c=\sqrt{12.377213236}=3.51812638147\approx \boxed{3.5}

Therefore, the shortest side of this triangle is 3.5.

5 0
3 years ago
X + 3 =8<br> X- 5 =7 <br> Please someone help?
Sav [38]

Step-by-step explanation:

x+3=8

8-5=3 so x=5

7+5=12 / 12-7=5

12-5=7

8 0
3 years ago
Read 2 more answers
Factor the following expression.<br> 6x^2- 5x-1
jenyasd209 [6]

Answer:

X=(6x+1)(x-1) because you are factoring out

8 0
3 years ago
Write two numbers so that
lana [24]
-5 and 2 would work.
5 0
3 years ago
Please help! I will give Brainliest!
diamong [38]
There are 9+7+6=22 marbles in total. The probability of selecting a yellow marble would be 9/22. By replacing that yellow marble with a green marble, you aren't changing the total marble count, so the probability of selecting a green marble would be 7/22. Because the two events are independent, their probabilities will get multiplied. Therefore, P(Yellow, then Green) = P(Yellow) * P(Green) = 9/22 * 7/22 = 63/484.
3 0
3 years ago
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