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BartSMP [9]
2 years ago
5

Does anyone know how to do this? MATH ANSWERS ONLY ​

Mathematics
1 answer:
Gnoma [55]2 years ago
3 0

Answer:

<em>34.2 ; 105.8 ; 12.0</em>

Step-by-step explanation:

\frac{a}{sinA} = \frac{b}{sinB} = \frac{c}{sinC}

c² = a² + b² - 2abcosC

~~~~~~~~~~~~

sinB = \frac{bsinA}{a}

sinB = 7sin40° ÷ 8 ≈  0.562439

<em>m∠B</em> ≈ <em>34.2°</em>

<em>m∠C</em> = 180° - ( 40° + 34.2° ) = <em>105.8°</em>

c² = 8² + 7² - 2(8)(7)cos106° ≈ 143.87

<em>c </em>≈ <em>12.0 </em>units

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Cerrena [4.2K]

Answer:

a)180-57-20=103

b)180-103=77

Step-by-step explanation

6 0
2 years ago
A plank of wood is 220 cm long.I cut it in 14cm pieces. what lenght of wood i will have left over?
Nana76 [90]

The required Length is 10cm.

What is length?

  • Length is a measure of distance. In the International System of Amounts, length is a volume with dimension distance. In utmost systems of dimension a base unit for length is chosen, from which all other units are deduced.
  • Length is generally understood to mean the most extended dimension of a fixed object. still, this isn't always the case and may depend on the position the object is in.
  • Varied terms for the length of a fixed object are used, and these include height, which is the perpendicular length or perpendicular extent, and range, breadth, or depth. Height is used when there's a base from which perpendicular measures can be taken. range or breadth generally relates to a shorter dimension when the length is the longest one.

220 / 14 gives us 15.

You have to understand that this means 15 whole 14 cm pieces and a Length of 1 piece.

thus 14 * 15 = 210

So 220- 210 = 10

where you know 220- 210 is< 15

Hence, The correct Length is 10cm.

Learn more about Length here:

brainly.com/question/2217700

#SPJ9

7 0
1 year ago
Plz answer the question just tell me were they belong plz worth 10 points and brainlest!
arsen [322]
Answer:

1. 2^x =64 is option number 4. 6

2. x= (2/5)^3 is option number 1. 8/125

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5 0
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She will need 1/3 cup because she has already covered 3/4
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