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allsm [11]
3 years ago
12

In Exercises 51−56, the letters a, b, and c represent nonzero constants. Solve the equation for x

Mathematics
2 answers:
chubhunter [2.5K]3 years ago
8 0

Answer:

x = 9b/C

Step-by-step explanation:

Cx – 4b = 5b

Add 4b to each side

Cx – 4b+4b = 5b+4b

Cx = 9b

Divide by C

Cx/C = 9b/C

x = 9b/C

Molodets [167]3 years ago
8 0

x=9b

Step-by-step explanation:

because if you subtract 9-4 it would equal 5 and then you would just add the b to the equation.hope this is helps

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If isosceles triangle ABC has a 130° angle at vertex B, which statement must be true?
scZoUnD [109]

Answer:

Option B m<ZA+m<ZB = 155° is correct option.

Step-by-step explanation:

We know that sum of angles of triangle is equal to 180°

And Isosceles triangle, 2 angles are same

So, let  Angle 1 = x

Angle 2 = x

Angle 3 = 130°

Finding values of angle x

x+x+130=180

2x=180-130

2x=50

x=25

So, Angle 1 = 25 °

Angle 2 = 25°

As, angle B is greater than 90°, the sum of angles added must be greater than 90°

So, Option A, C and D can't be correct, as their sum is less than 90°

Option B m<ZA+m<ZB = 155° is correct option.

Verify:

m<ZA = 25° (as found earlier)

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So, m<ZA+m<ZB = 155°

25°+130° = 155°

8 0
3 years ago
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