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kirill115 [55]
3 years ago
9

In a right angle triangle the side lengths are 4 and 2. Please find the hypotenuse. You

Mathematics
1 answer:
anygoal [31]3 years ago
4 0

Answer:

\sqrt{20} or 4.47

Step-by-step explanation:

a^{2}+^{2}=c^{2} \\4^{2}+2^{2}=c^{2}\\16+4=c^{2}\\c=\sqrt{20}

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Write (9x-5y)(2x+3y) as a polynomial
marta [7]
(9x - 5y)(2x + 3y)
9x(2x + 3y) - 5y(2x+ 3y)
9x(2x) + 9x(3y) - 5y(2x) - 5y(3y)
18x² + 27xy - 10xy - 15y²
18x² + 17xy - 15y²
6 0
3 years ago
A ladder is placed 30 inches from a wall. It touches the wall at a height of 50 inches from the ground. The angle made by the la
Lady bird [3.3K]

Answer:

applying trigonometry

base= 30inches

height= 50inches

angle between ladder and ground = 59.04°

for the length of the ladder...

sin59.04 = opposite side ÷ hypotenuse

sin59. 04 = 50inches ÷ hypotenuse

0.8575 = 50 inches ÷ hypotenuse

cross multiply;

hypotenuse = 50inches ÷ 0.8575

the length of the ladder = 58.309inches

4 0
3 years ago
-1/4d-2/5d=39 <br> Solve for d <br> Please explain I don’t understand
Maurinko [17]

Answer:

d = -60

Step-by-step explanation:

Given:

-1/4d - 2/5d = 39

-5d-8d/20 = 39

-13/20d = 39

Divide both sides by -13/20

d = 39 ÷ -13/20

= 39 × -20/13

= -60

d = -60

7 0
3 years ago
Simplify the following expression: (67 − 18) ÷ 7 × 3
Alexxx [7]

Answer:

21, You have to subtract 67 by 18, then multiply 7 by 3 then divide together both of their answers.

5 0
3 years ago
Read 2 more answers
What is the solution to the following system of linear equations?
OverLord2011 [107]
There are two ways to solve system of equations.

1) substitution method

2) elimination method

4x - y = -6

x - 2y = -5

For thus problem, i'll be using the substitute method.

So, using the equation x - 2y = -5:

Solve for "x" by adding 2y to both sides of the equation.

x = 2y - 5

Now we know what "x" is, we can substitute it in the other equation.

4x - y = -6

4(2y - 5) - y = -6

8y - 20 - y = -6

7y - 20 = -6

7y = 14

y = 2

We now know the numerical value of y. So, all we have to do is plug in y into either system of equation to solve for the numerical value of x.

4x - 2 = -6 x - 2y = -5

4x = -4 x - 2(2) = -5

x = -1 x - 4 = -5

x = -1



The solution is (-1, 2) where x equals -1 and y equals 2.


7 0
3 years ago
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