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stiks02 [169]
2 years ago
10

PLEASE HELP ME I BEG IMMA FAILLLLLLLLLLLLLLLL

Mathematics
2 answers:
Ber [7]2 years ago
7 0

Answer:

78

Step-by-step explanation:

180-90-12=78

Katena32 [7]2 years ago
4 0
90 + 12 + missing angle = 180

102 + missing angle = 180

Missing angle = 180 - 102

Missing angle = 78

Hope this helps!
Brainliest is much appreciated!
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The surface area of a right cone is 400.2 m2. The radius of the cone is 6.0 m. Determine the height of the cone to the nearest m
svetoff [14.1K]
                 S = πr(r + √(h² + r²))
          400.2 = 3.14(6)(6 + √(h² + 6²))
          400.2 = 18.84(6 + √(h² + 36))
          18.84                 18.84
        21¹⁰⁹/₄₇₁ = 6 + √(h² + 36))
        - 6         - 6
        15¹⁰⁹/₄₇₁ = √(h² + 36)
231²²¹⁰⁰⁵/₂₂₁₈₄₁ = h² + 36
- 36                       - 36
195²²¹⁰⁰⁵/₂₂₁₈₄₁ = h²
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8 0
3 years ago
Pls help with this question tyy
bearhunter [10]

Answer:

0

Step-by-step explanation:

63/9=7

7^2=49

49/7=7

7-7=0

6 0
3 years ago
Read 2 more answers
A cyclist rides her bike at a rate of 15 miles per hour. What is this rate in kilometers per hour? How many kilometers will the
Trava [24]

Answer:

1. 24 km/hour

2. 48 km

Step-by-step explanation:

1 mile = 1.6 km

cyclist = 15 miles/ hour

we want to multiply speed by something that will cancel miles out and leave km. to do this, we want to multiply it by something with miles on the bottom and km on the top.

this is because

miles * km / miles = km as the miles cancel out and km is left in the numerator

thus,

1 mile = 1.6 km

divide both sides by 1.6 km to get 1 on a side

1 mile / 1.6 km = 1

alternatively, divide both sides by 1 mile to get 1 on a side

1.6 km / 1 mile = 1

since we want miles on the bottom, we choose the second option

cyclist = 15 miles / hour = 15 miles/hour * 1 = 15 miles/hour * 1.6km / 1 mile = 24 km /hour

24 km/hr for 2 hours = 24 km/hr * 2 hours = 24 * 2 km = 48 km

3 0
1 year ago
Darlene's room measures 12feet on ones side and 9 feet on another, help her calculate the area of her room. The area if a rectan
IrinaK [193]

Answer:

  108 ft²

Step-by-step explanation:

The product of length and width is ...

  (12 ft)(9 ft) = 12·9 ft·ft = 108 ft²

8 0
3 years ago
Help!! 10 points!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Nataly [62]

Answer:

36.6

Step-by-step explanation:

8 0
2 years ago
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