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SVETLANKA909090 [29]
4 years ago
8

If AB = 2x–8 and AC = x+9, What is the length of BC?

Mathematics
2 answers:
Virty [35]4 years ago
4 0

Answer:

17

Step-by-step explanation:

2x-8=x+9

x=17

scZoUnD [109]4 years ago
3 0

ANSWER

BC=17 units

EXPLANATION

The given triangle is an isosceles triangle.

We have

AC=AB

This implies that,

x + 9 = 2x - 8

Group similar terms and simplify to get:

2x - x = 9 + 8

x = 17

Side BC is x units. But x=17

Therefore BC is 17 units.

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Please help I don't undestand
Alla [95]

By applying the law of sines and some algebraic handling, the length of the side LJ is approximately equal to 3.517 units. (Right choice: D)

<h3>What is the missing side of the triangle according to the law of sines?</h3>

The law of sines presents a relationship between sides and <em>opposite</em> angles, which is described below:

9/sin 89° = LJ/sin 23°     (1)

LJ = 9 × sin 23°/sin 89°

LJ ≈ 3.517

By applying the law of sines and some algebraic handling, the length of the side LJ is approximately equal to 3.517 units. (Right choice: D)

To learn more on law of sines: brainly.com/question/21634338

#SPJ1

3 0
2 years ago
Suppose I invest $400 in an account that pays 3% interest annually. How much will I have in the account after 2 years, assuming
Simora [160]
I agree ☝ which the guy above me because I worked that out and was thinking about it and I got that answer
7 0
4 years ago
On a coordinate plane, a point is at (negative 4, negative 4) and (negative 4, negative 10).
Valentin [98]

Answer:

Option C.

Step-by-step explanation:

Hey there!

The points are; (-4,-4) and (-4,-10).

<u>Use </u><u>distance</u><u> formula</u><u>.</u>

d =  \sqrt{ {(x2 - x1)}^{2} +  {(y2 - y1)}^{2}  }

~ Put all values.

d =  \sqrt{ {( - 4 + 4)}^{2}  + (  { - 10  + 4)}^{2} }

~ Simplify it.

d =  \sqrt{ {0}^{2} + ( { - 6)}^{2}  }

d =  \sqrt{36}

Therefore, distance between the points is 6 units.

<em><u>Hope</u></em><em><u> it</u></em><em><u> helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

6 0
3 years ago
B is the midpoint of ac. bc = 3x - 1. ac = x + 3. find the value of ab
Ilia_Sergeevich [38]

Answer:

ab=bc because b devide ac in two equal sizes

ac=ab+bc

ac=2×ab

ac =2×bc

lets substitute ac and bc there we are given

x+3=2(3x-1)

x+3=6x-2

-5x/-5=-5/-5

x=1

ab=3(1)-1

ab=2

8 0
2 years ago
Round 209 to the nearest ten and hundreds
erica [24]
209 to the nearest hundredth is 200.
209 to the nearest tenth is 210.
5 0
3 years ago
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