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jekas [21]
2 years ago
14

Pls answer the questions (all)

Mathematics
1 answer:
bearhunter [10]2 years ago
4 0

Answer:

1;no

2; i don^t know

3;c

4;12

5:20

Step-by-step explanation:

reasons

1:sum of all side of triangle is 180 degree(here is 220)

3: try in copy and u will able to solve

4:first of all make 9 cm as shown in figure and draw 15 . finally measure the remaining side.

5: 3y+5y+y=180

    9y=180

      hence,y=20

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Two different sizes of square metal duct are joined by a piece that is a frustum of a pyramid. Find the lateral surface area, if
Allisa [31]

Answer:

288 in²

Step-by-step explanation:

The formula used to solve this question is :

Lateral Surface Area = s( P1 + P2)

Where s = slant height = 2 inches

P1 and P2 = Perimeter of the bases

Perimeter of base 1 = 4 × length of the end of the small square

4 × 17 inches = 68 inches

Perimeter of base 2 = 4 × length of the end of the large square

4 × 19 inches = 76 inches

Lateral Surface Area = 2 × (68 + 76)

= 2 × 144

= 288 in²

8 0
3 years ago
A survey claims that 9 out of 10 doctors recommend aspirin for their patients with headaches. to test this claim, a random sampl
gayaneshka [121]
8.3 out of 10 docters
7 0
3 years ago
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How many ways can the words in d-r-a-g-o-n-f-l-y be arranged
GarryVolchara [31]

Answer:

362880 ways

Step-by-step explanation:

The word dragonfly has 9 different letters.

So, to find how many ways this word can be arranged, we just need to calculate the factorial of 9:

First letter has 9 possibilities

Second letter has 8 possibilities (one used)

Third letter has 7 possibilities (two used), and so on.

So the number of ways is:

9*8*7*6*5*4*3*2*1 = 362880 ways

7 0
3 years ago
How fast is a car going if its mass is 1000 kg and the force acting on it is 154 N?
Phoenix [80]

Answer:

Only external forces affect the motion of a system, according to Newton's first law. ... force applied to a car produces a much smaller acceleration than when ... Newton's second law states that a net force on an object is responsible for its ... A 1.0-kg mass thus has a weight of 9.8 N on Earth and only about 1.7 N on the Moon.

Step-by-step explanation:

Only external forces affect the motion of a system, according to Newton's first law. ... force applied to a car produces a much smaller acceleration than when ... Newton's second law states that a net force on an object is responsible for its ... A 1.0-kg mass thus has a weight of 9.8 N on Earth and only about 1.7 N on the Moon.

3 0
2 years ago
Is it possible to prove these triangles congruent by the HL Theorem?
aleksandr82 [10.1K]

since by the provided tickmarks WE ≅ ER, and QE ≅ ET, then both triangles are congruent by LL theorem, Leg Leg.


anyhow, since those legs are congruent, their hypotenuses must also be congruents, and we could use the HL theorem as well.

4 0
3 years ago
Read 2 more answers
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