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2 years ago

The atmosphere of a certain planet is made up of many

Mathematics

1 answer:

kvasek [131]2 years ago

8 0

I think is element 2? I’m not sure but I think is 2

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Find a quadratic function that includes the set of values below.<br> (0,9). (2,15) (3,12)

nlexa [21]

Answer:

$f(x) = -2x^2 + 7x + 9$

Step-by-step explanation:

$f(x) = ax^2 + bx + c\\f(0) = 9 => c = 9;\\f(2) = 15 = 4a + 2b + 9 2a + b = 3\\f(3) = 9a + 3b + 9 = 12 3a + b = 1\\Subtract the second equation from the first:\\-a = 2 => a = -2; b = 7; c = 9\\f(x) = -2x^2 + 7x + 9$

3 0

3 years ago

Solve the following equation <br><br> 1/x-1+1/x+2=3

disa [49]

Answer:

x = 1

Step-by-step explanation:

Solve for x over the real numbers:

-1 + 2 + 1/x + 1/x = 3

-1 + 2 + 1/x + 1/x = 1 + 2/x:

1 + 2/x = 3

Bring 1 + 2/x together using the common denominator x:

(x + 2)/x = 3

Multiply both sides by x:

x + 2 = 3 x

Subtract 3 x + 2 from both sides:

-2 x = -2

Divide both sides by -2:

Answer: x = 1

6 0

3 years ago

Someone h e l p me on this it is geometry

ladessa [460]

BC = 6 km

<u>/</u><u> </u> ACB = 34°

AC = ?

cos 34° = $\frac{BC}{AC}$

=> 0.829 = $\frac{6}{AC}$

=> AC = $\frac{6}{0.829}$

=> AC = 7.23763570567

=> AC = 7 km

=> AC = 10 km $\:\:\:\:\:\:\:\:$ (nearest tenth)

$\\$

<h3>Answer : 10 km</h3>

$\\\\\\\\$

HOPE IT HELPS

PLEASE MARK ME BRAINLIEST ☺️

7 0

2 years ago

The area of a rectangular garden is 7722 m“.

Slav-nsk [51]

The width of the garden is 78
You just divide 7722 by 99 (which is 78)

7 0

3 years ago

Rosie bought a car for £4000.

vovangra [49]

Answer:

3.5%

Step-by-step explanation:

4000*3.5% =1400

4000-1400=2600 percentage rosie loss 3.5%

8 0

2 years ago