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larisa86 [58]
2 years ago
14

10. 9. Solve the equation (x-2)(x+2) = 0 (4F) A. 02,0 B. O-2, 2 C.O-2 D. 2

Mathematics
1 answer:
masha68 [24]2 years ago
4 0

Answer:

x=2 or x=-2

Step-by-step explanation:

I'm not sure what you're asking, but when you solve, set both sets of parentheses equal to 0 and solve. This makes x either equal to 2 or -2.

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Select all the conditions for which it is possible to construct a triangle. (7.G.1.2) Group of answer choices a. A triangle with
saw5 [17]

Answer:

  b, d, e, f

Step-by-step explanation:

Here are the applicable restrictions:

  • The sum of angles in a triangle is 180°, no more, no less.
  • The sum of the lengths of the two shortest sides exceeds the longest side.
  • When two sides and the angle opposite the shortest is given, the sine of the given angle must be at most the ratio of the shortest to longest sides.

a. A triangle with angle measures 60°, 80°, and 80° (angle sum ≠ 180°, not OK)

b. A triangle with side lengths 4 cm, 5 cm, and 6 cm (4+5 > 6, OK)

c. A triangle with side lengths 4 cm, 5 cm, and 15 cm (4+5 < 15, not OK)

d. A triangle with side lengths 4 cm, 5 cm, and a 50° angle across from the 4 cm side (sin(50°) ≈ 0.766 < 4/5, OK)

e. A triangle with angle measures 30° and 60°, and an included 3 cm side length (OK)

f. A triangle with angle measures 60°, 20°, and 100° (angle sum = 180°, OK)

_____

<em>Additional comment</em>

In choice "e", two angles and the side between them are specified. As long as the sum of the two angles is less than 180°, a triangle can be formed. The length of the side is immaterial with respect to whether a triangle can be made.

__

The congruence postulates for triangles are ...

  SSS, SAS, ASA, AAS, and HL

These essentially tell you the side and angle specifications necessary to define <em>a singular triangle</em>. As we discussed above, the triangle inequality puts limits on the side lengths specified in SSS. The angle sum theorem puts limits on the angles when only two are specified (ASA, AAS).

In terms of sides and angles, the HL postulate is equivalent to an SSA theorem, where the angle is 90°. In that case, the angle is opposite the longest side (H). In general, SSA will specify a singular triangle when the angle is opposite the <em>longest</em> specified side, regardless of that angle's measure. However, when the angle is opposite the <em>shortest</em> specified side, the above-described ratio restriction holds. If the sine of the angle is <em>less than</em> the ratio of sides, then <em>two possible triangles are specified</em>.

4 0
2 years ago
9999999999999999999999999999999999999+888888888888888888888888888888888888
alexandr1967 [171]

Answer:

a lot

Step-by-step explanation:

3 0
3 years ago
Daveon rode his bike to the end of the street is 37.6 seconds. Davaris took 42.5 seconds to reach the end. How much faster did D
liubo4ka [24]

Answer:

4.9 Seconds.

Step-by-step explanation:

Simply <u>subtract</u> <em>42.5</em> and <em>37.6</em> and you will get your answer.

6 0
3 years ago
Read 2 more answers
Faye was playing a video game where she scores seven points for each treasure she finds.If she found two treasures on the first
tangare [24]
Faye's score on the second level is: 6x7= 42
Her total score is 14+42 = 56
4 0
3 years ago
Read 2 more answers
Please help me it is 1 question
satela [25.4K]

Answer:

5/6 more meters

Step-by-step explanation:

Find the perimeter of the wardrobe (Add all the sides together) and you get 4 5/6 m.

Subtract 4 meters because she already has 4 meters of ribbon.

4 5/6 - 4 = 5/6

7 0
2 years ago
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