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3 years ago

A bus drives for 3 and a half hours at and average speed of

Mathematics

2 answers:

nydimaria [60]3 years ago

8 0

Answer: :P

Step-by-step explanation:

Arada [10]3 years ago

5 0

Answer: 3.14159

Step-by-step explanation:

something

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Can someone help me out with these equations? 1. (5+ √3)^2 2. (√6-5√3)^2 3. (6+3√2)^2

Aloiza [94]

9514 1404 393

Answer:

28 +10√3
81 -30√2
54 +36√2

Step-by-step explanation:

It is useful to remember the form for the square of a binomial.

(a +b)² = a² +2ab +b²

(a -b)² = a² -2ab +b²

1. (5 +√3)² = 5² +2·5·√3 +(√3)² = 25 +10√3 +3

= 28 +10√3

2. (√6 -5√3)² = (√6)² -2·√6·5√3 +(5√3)² = 6 -30√2 +75

= 81 -30√2

3. (6 +3√2)² = 6² +2·6·3√2 +(3√2)² = 36 +36√2 +18

= 54 +36√2

6 0

3 years ago

Num 27. Please answer and explain if you have time but totally not needed

ohaa [14]

Answer:

a. d = $\sqrt{3}$

b. d = $2\sqrt{3}$

c. d = $s\sqrt{3}$

Step-by-step explanation:

to find the length of the longest diagonal of the cube at first you will find the length of the diagonal if its base

If the length of the side of a cube is x

∴the length of the diagonal of the base = $\sqrt{x^{2}+x^{2}}=\sqrt{2x^{2} }=x\sqrt{2}$

Now to find the length of the longest diagonal we will use Pythagoras with the side of the cube and the diagonal of the base

$d^{2}=(x\sqrt{2} )^{2} + x^{2}=2x^{2} +x^{2} =3x^{2}$

$d=\sqrt{3x^{2} }=x\sqrt{3}$

means the length of the side multiply by root 3

a. The length of the side is 1 so $d=\sqrt{3}$

b. The length of the side is 2 so $d=2\sqrt{3}$

c. The length of the side is s so $d=s\sqrt{3}$

6 0

3 years ago

Last year, 50 students attended the winter carnival. This year, 60 students attended the carnival. Which statement below correct

Fittoniya [83]

Answer:

C. An increase of 20%

Step-by-step explanation:

50/100 = 60/x

Cross products

50 x = 6000

Divide 50 by both sides

x = 120

60 is 120% of 50, so there is a 20% increase

Hope this helps!

-Jerc

4 0

3 years ago

Please tell me Why do I stink and how can I fix it

Svetllana [295]

Answer:

u dont shower and need to use doederent and shower more often

5 0

3 years ago

Kristin watches 3 television shows every day. She has already watched 15 shows so far. How many days will it take her to watch a

kap26 [50]

45-15= 30

30/3= 10

The answer will be 10 days

Have a nice day

6 0

3 years ago