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dimaraw [331]
3 years ago
7

Y=-2x+9 answer to this question

Mathematics
2 answers:
rewona [7]3 years ago
4 0

Answer:

5.5

Step-by-step explanation:

natka813 [3]3 years ago
3 0

Answer:

-2x+9

Not sure sorry

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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
Solve for x: x - 2 = 10
larisa86 [58]

Answer:

x=12

Step-by-step explanation:

you just have to add 2 to both sides to get x by itself and 10+2=12. therefore, x=12

8 0
3 years ago
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Two forces of 17.3 pounds and 42.5 pounds act on a body with an angle of 21.9 degrees between them. The force of 42.5 pounds act
disa [49]

Answer: It’s A- 6.3

Step-by-step explanation:

4 0
3 years ago
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C=(7,-4) and D= (-8,5) CD=?
prisoha [69]

Answer:

Step-by-step explanation:

x_{1}=7 \ ; y_{1} = -4\\\\x_{2} = -8 \ ; y_{2}=5\\\\CD = \sqrt{(-8-7)^{2}+(5-[-4])^{2}}\\\\=\sqrt{(-15)^{2}+(5+4)^{2}}\\\\=\sqrt{225+(9)^{2}}\\\\=\sqrt{225+81}\\\\=\sqrt{306}\\\\=\sqrt{3*3*2*17}\\\\=3\sqrt{34}

Distance = \sqrt{(x_{2}-x_{1})^{2}-(y_{2}-y_{1})^{2}}

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3 years ago
For any two integers a and b, (a + b)2 = a? + b2
laila [671]

Answer:

(a+b)2 = a2 + b2

Step-by-step explanation:

8 0
3 years ago
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