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USPshnik [31]
3 years ago
6

Give the approximate bond angle for a molecule with a trigonal planar shape.A) 109.5°B) 180°C) 120°D) 105°E) 90°

Mathematics
1 answer:
jeka57 [31]3 years ago
7 0

Answer:

C

Step-by-step explanation:

Trigonal Planar is 3 atoms bonded to 1 atom with no lone pairs, the bond angle is 120 degrees and the shape is flat.

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Simplify this expression???
olya-2409 [2.1K]

Answer:

(D)

Step-by-step explanation:

Given data:

(7^{-8} )^{-4}

Applying rule :

(a^{m} )^{n} =a^{mn}

Therefore,

7^{(-8)(-4)} =7^{32}

Answer will be 7^{32}

Option (D) is correct

4 0
3 years ago
(a-b) ( a+b) simplify​
BlackZzzverrR [31]

Answer:

a^2 - b^2

Step-by-step explanation:

1. (a)(a)+(a)(b)+(-b)(a)+(-b)(b)

2. a^2 + ab - ab - b^2

3. a^2 - b^2

4 0
3 years ago
Which of the following sets of sides does not form a right triangle?
kolezko [41]

Answer:

7, 24, 26

Step-by-step explanation:

6 squared is 36 and 8 squared is 64. Add them together and you get 100, which is 10 squared. Do the same for the other ones and you'll notice that 7 squared and 24 squared added together is 625, which is not 26 squared. In my head 25 squared is 625(check if you don't believe me) so I know that the answer is the third one. The basic formula for a right triangle is a^2 + b^2 = c^2, and that's how you find if three numbers form a right triangle or not. Hope this helps :)

3 0
3 years ago
Simplify! (a^3b)(abc)<br><br> A) a^2bc^5<br> B) a^4b^2<br> C) a^4b^2c<br> D) a^4bc
fenix001 [56]

Answer:

a^{3}*b*(abc)=a^{4} * b^{2} * c

Step-by-step explanation:

you use the distributive property

7 0
3 years ago
Read 2 more answers
Petra also has this information about the arrival times of trains last week. The train company has a target 98% of trains must a
dmitriy555 [2]

Answer:

No

Step-by-step explanation:

The total number of trains is 287 + 54 + 17 + 5 = 363.

Of these, the number of trains that arrived no more than 10 minutes late is 287 + 54 = 341.

The proportion is p = 341/363 = 0.94.

94% of the trains arrived no more than 10 minutes late, so the company did not meet its target.

8 0
3 years ago
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