3 years ago

Please Help fast!!! First correct answer will get brainliest.

Mathematics

2 answers:

Rainbow [258]3 years ago

4 0

12x-7y = 2. Answer 0
4x -5t = 6 answer 0

rodikova [14]3 years ago

4 0

Answer:

{x,y} = {-1,-2}

Step-by-step explanation:

it will be correct

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What element in the domain has image 7 in the function f(x) = x²– 2? a. 3 b) 9 c) -1 d) 4

blagie [28]

Here,

f(x) = 7

x = ?

Now,

f(x) = x^2 - 2

or, 7 = x^2 - 2

or, 7 + 2 = x^2

or, x^2 = 9

◆ x = 3

a) 3

I hope it's help you...

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3 years ago

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Four whole nuber are each rounded to the nearest 10 the sum of the four rounded numbers is 90 what is the possible maximum sum o

bearhunter [10]

Answer:

$106$

Step-by-step explanation:

Let's try guessing...

$45+45=90\\30+30+30=90\\10+20+30+30=90$

All the units place has to be 4, if it is higher than 4 then the answer will not be 90 (the sum of the four rounded numbers).

$14 + 24 + 34 + 34= 106$

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3 years ago

What is the answer 1/7+3/7=?

tatyana61 [14]

1/7+3/7=>(3+1)/7=4/7

5 0

3 years ago

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Can somebody please answers this thank you , just a, b, and c .

Shkiper50 [21]

Answer:

A) - 8 - 13 +4

B)+4 +7 - 2

C)-7 +3 - 20

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3 years ago

What is x? I will give brainliest if you explain your answer.

horsena [70]

Answer:

x = {0, π/2, 3π/2, 2π}

Step-by-step explanation:

cotx cos x - cot x = 0
cotx( cosx - 1) = 0

1. cotx = 0

x = π/2 + πn
In the interval [0, 2π] we have π/2 and 3π/2

2. cosx = 1

x = 0 + 2πn
In the given interval we have 0 and 2π

So the solution set is:

x = {0, π/2, 3π/2, 2π}

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3 years ago