MATHEMATICS MIDDLE SCHOOL

CAN YOU PLEASE HELP ME?1. Find the unknown side length.

CAN YOU PLEASE SHOW YOUR WORK?

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

We can use the Pythagorean theorem to solve

a^2 +b^2 = c^2

12^2 + 16^2 = x^2

144+256 = x^2

400 = x^2

Take the square root on each side

sqrt(400) = sqrt(x^2)

20 =x

Answer 2

Answer:

Answer:

(D) 20

Step-by-step explanation:

Since this triangle is a right triangle, we can use the pythagorean theorem which is a^2 +b^2 = c^2 (where a is the legs of the triangle and c is the hypotenuse.) For this triangle using the pythagorean theorem we can say that 12^2 +16^2 = x^2. When we simplify this equation we get 144+256=x^2. When we simplify this we get x^2=400. When we take the square root of x we get that x = √400 = 20. The answer is (D) 20.

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Answers

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Answers

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What is -9x-(2x/-3) When x equals 7

Answers

$-9x- (2x)/(-3)$

$-9*(7) - (2*7)/(-3)$

$9*7 = 63$

$(2*7)/(-3) = (14)/(-3)$

Apply the fraction rule : $(a)/(-b) = - (a)/(b)$

$= - (14)/(3)$

$-63-( -(14)/(3) )$

Apply rule - ( - a) = a

$-63+ (14)/(3)$

Convert element to fraction :

$63 = (63)/(1)$

$-(63)/(1) + (14)/(3)$

Find the LCD 1*3 = 3

$- (63*3)/(3)+ (14)/(3)$

$(-3+63+14)/(3) = (-175)/(3)$

Apply the fraction rule : $(a)/(-b) = - (a)/(b)$

$= - (175)/(3)$

hope this helps!

How many acute/obtuse/right angles does a pentagon have

Answers

5 obtuse no acute and no right

Heeeeeeeeeelp......

Answers

Answer:

x+7

Step-by-step explanation:

So it's been a while since I took Geometry, so I don't know what principle makes these angles equal to each other, but I know that they are in fact equal. So that means that 6x +3 = 45. Subtract 3 from each side gets you 42+6x, then divide each side by 6, which gets you your answer of x=7.

a skate shop owner ordered 60 skateboards from the manufacturer. out of the 60 boards that were ordered, 18 were longboard. he wants to know what percent of his order was longboards?