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3 years ago

PLEASE HELP ME BRAINLIEST AND 20 POINTS

Mathematics

1 answer:

ryzh [129]3 years ago

6 0

Domain is -infinity to +infinity. So it is all real numbers. This is because you can plug any number into the x value.

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Formula for a right angle triangle

lana [24]

Pythagoras: A^2 + B^2 = C^2 where c is the side opposite the hypotenuse (opposite the right angle) and B and C are the other sides. Trigonometry: SOH CAH TOA where you can use their formula where sin = opposite/ hypotenuse Cos= adjacent/ hypotenuse Tan= opposite/ adjacent

7 0

3 years ago

Solve the inequality: 4(2x-11) is less than equal to -12 + 2(x-4) No "files" please and also need an explanation

dezoksy [38]

$4(2x-11) \leq -12 +2(x-4)\\\\\implies 8x - 44 \leq -12 + 2x -8\\\\\implies 8x -44 \leq 2x -20\\\\\implies 4x - 22 \leq x - 10~~~~~~~~~~~~~~~~~~~;[\text{Dividing both sides by 2}]\\\\\implies 4x -22 +22 \leq x -10 +22~~~~~~;[\text{Adding 22 to both sides}]\\\\\implies 4x \leq x+12\\\\\implies 4x -x \leq x+12-x~~~~~~~~~~~~~~~~;[\text{Subtracting x from both sides}]\\\\\implies 3x \leq 12\\\\\implies x \leq 4 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~;[\text{Dividing both sides by 3}]$

$\text{Interval solution,} ~(-\infty, 4]$

3 0

3 years ago

A teacher gave a test with 50 questions, each worth the same number of points. Donovan got 38 out of 50 questions right. Marcis

melisa1 [442]

Answer:

Step-by-step explanation:

38of 502bhfghggiggjgfhhffj

8 0

3 years ago

Amaiya purchased a box of 36 pencils to donate to Ms. Annunziata’s class, but not all pencils were used. The ratio of pencils th

deff fn [24]

15 pencils were left from the box of pencils Amaiya bought.

Step-by-step explanation:

Number of pencils in box = 36

Ratio of used pencils to not used = 7:5

Let,

7x be the total pencils used.

5x be the total pencils not used.

Therefore,

7x+5x=36

$12x=36$

Dividing both sides by 12;

$\frac{12x}{12}=\frac{36}{12}\\x=3$

Therefore,

Used pencils = 7x = 7*3 = 21

Not used pencils = 5x = 5*3 = 15

15 pencils were left from the box of pencils Amaiya bought.

Keywords: ratio, multiplication

Learn more about ratios at:

#LearnwithBrainly

6 0

3 years ago

Which is a solution to the equation y = 2x - 5?

fredd [130]

The correct answer is B

8 0

3 years ago