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3 years ago

PLZZZ HELP will mark brainliest!

Mathematics

1 answer:

erica [24]3 years ago

8 0

Answer:

(3,8): No, (-1,-11): Yes, (2,7): Yes, (0,-6): No

Step-by-step explanation:

Basically, you just substitute x and y with the numbers given.

18x - 3y = 15

y = 6x - 5

(3,8):

18(3) - 3(8) = 15

54 - 24 = 30 It is not equal to 15, so it does not work.

y = 6x - 5

8 = 6(3) - 5

8 = 13 It is not equal to 8, so it does not work.

Therefore, (3,8) is not a solution.

Try this for every pair and you will find that (-1,-11) and (2,7) are solutions.

I hope this helps!

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3 years ago

Which equations are equivalent to log 4x=3

Lady bird [3.3K]

I'm not sure that this is what you wanted, but the solution is x = 2500
$log(4x) = 3 \\ rule > \: log_{a}(b) = x < = > \: b = {a}^{x} \\ 4x = {10}^{3} \\ 4x = 10 \: 000 \\ x = \frac{10 \: 000}{4} \\ x = 2500$
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3 years ago

100 points for this question I beg

lisov135 [29]

Answer:

22°

Step-by-step explanation:

<em>Refer to picture</em>

Added angles a and b as interior angles of same triangle with angle x to make solving simple.

Angle a is same as 42° since both angles intercept same arc AB.

a = 42°

Angle b is supplementary with 64° angle as linear pair

b = 180° - 64° = 116°

Some of the interior angles of a triangle is 180

x + 42° + 116° = 180°
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2 years ago

6. Solve the problem.

Assoli18 [71]

Answer: 32

Step-by-step explanation:

we have in this case right triangle with a leg equal to 24 and a hypotenuse equal to 40

c^2=a^2+b^2

40^2=24^2+b^2

b^2=1600-576=1024

b=sqrt1024=32

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3 years ago

el cobre tiene un punto de ebullicion de 2595°C y su temperatura de fusión es de 1083°C ¿cuál es la diferencia de temperaturas e

Vladimir79 [104]

Answer: 1512°C

Step-by-step explanation:

I will answer this in English:

The data we have: The boiling point is 2595°C and the fussion point is 1083°C

the difference between those points is equal to the direct difference between the temperatures:

Diff = 2595°C - 1083°C = 1512°C

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4 years ago