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timofeeve [1]
4 years ago
12

I need help !!!!!!!!!!!!!!

Mathematics
1 answer:
Montano1993 [528]4 years ago
5 0

Answer:

x=65°

Step-by-step explanation:


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WILL GIVE BRANLIEST -
mote1985 [20]

d+p/20% Step-by-step explanation:

5 0
3 years ago
△ABC  is a right triangle with right angle C. Side AC is 6 units longer than side BC . If the hypotenuse has length 52–√ units,
Evgesh-ka [11]

Answer:

AC = 7.12 units

Step-by-step explanation:

A right triangle has two legs and a hypotenuse. The hypotenuse is opposite the right angle. As Angle C is the right angle, then the triangle can be constructed as shown in the picture attached. The sides of the triangle have a relationship known as the Pythagorean Theorem a² + b² = c². In the theorem, the legs of the triangle are a and b while the hypotenuse is c. Substitute a = x, b = x+6, and c = √52. Simplify and solve.

a² + b² = c²

x² + (x+6)² = √52²

x² + x² + 12x + 36 = 52

2x² + 12x - 16 = 0

You can use the quadratic formula to solve by substituting a = 2, b = 12, and c = -16.

The quadratic formula is x=\frac{-b+/-\sqrt{b^2-4ac} }{2a}.

Substitute and you'll have:

x=\frac{-b+/-\sqrt{b^2-4ac} }{2a} =\frac{-12+/-\sqrt{12^2-4(2)(-16)} }{2(2)}=\frac{-12+/-\sqrt{144+128} }{4)}

\frac{-12+/-\sqrt{272} }{4}=\frac{-12+/-16.5 }{4} = 1.12, 7.13

Only 1.12 is a solution since 7.13 will not satisfy the Pythagorean theorem

Side AC is 6 units longer than side BC. This means x = BC and AC = x + 6.

AC = 1.12 + 6 = 7.12

6 0
4 years ago
The equation of direct proportion y=kx is given by the table. Find the coefficient k, and fill in the table:
Gemiola [76]

Answer:

The coefficient of k is -6

Step-by-step explanation:

Let x = -2

Let y = 12

y = kx

12 = k(-2)

k =12÷(-2)

= -6

(Correct me if i am wrong)

7 0
3 years ago
Factored form of 9x2+12x+4
satela [25.4K]
The factored form of 9x^2 + 12x + 4 is:

(3x+2)(3x+2) or (3x+2)^2
5 0
3 years ago
Read 2 more answers
If each car is 16 centimeters long, what is the length of a 15 car train
FinnZ [79.3K]
To do this,  just multiply 16*15=  This equals 240 centimeters.
4 0
3 years ago
Read 2 more answers
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