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stira [4]
3 years ago
13

What is the length of BC¯¯¯¯¯ ?

Mathematics
2 answers:
adell [148]3 years ago
3 0
X + 9 = 2x - 8
2x - x = 9 + 8
x = 17

BC = x = 17

answer
17 units
alexgriva [62]3 years ago
3 0
You would set AC and AB equal to each other to find out what x is. 

x+9=2x-8
x+17=2x
17=1x
17=x

Since CB is just x, CB equals 17.
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Please help. Thank you​
love history [14]

Answer:

The length of side x is x = \sqrt{6}

Step-by-step explanation:

Pythagorean Theorem:

In a right triangle, with sides a and b, and hypothenuse h, we have that:

a^2 + b^2 = h^2

In this question:

The vertical line on the sides means that both are equal, that is, measuring x, so a = b = x.

Hypothenuse is the square root of 12. So h = \sqrt{12}

x^2 + x^2 = (\sqrt{12})^2

2x^2 = 12

x^2 = \frac{12}{2}

x^2 = 6

x = \sqrt{6}

The length of side x is x = \sqrt{6}

8 0
2 years ago
The use of air bags in cars reduces the force of impact by a factor of 110.(The resulting force is only as great.) What can be s
Vadim26 [7]

Answer:

C. It increases by a factor of 110

Step-by-step explanation:

For Plato

5 0
3 years ago
Help me please solves this my math teacher will yell at me if I don’t get this done!!!
VARVARA [1.3K]
The answer is 75

First you subtract 180 and 165 to find that smallest angle inside the triangle(15). Then you add 15 and 90,the two angles you know, and do 180 - 105= 75.

The trick is that all angles inside a triangle equal 180 degrees. Hope this helps!
5 0
3 years ago
Evaluate 9(4x – 15) if x = 3.
4vir4ik [10]

Answer:

-27

Step-by-step explanation:

9(4x – 15)

Substitute 3 for x

9((4)(3) - 15)

Multiply (4)(3) = 12

9 ( 12 - 15 )

Subtract 12 - 15 = -3

9(-3)

Multiply 9(-3) = -27

5 0
3 years ago
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Answer:

The average speed of the plain was 800 miles/h

Step-by-step explanation:

5 0
2 years ago
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