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OleMash [197]
3 years ago
10

The sum of the angle measures

Mathematics
2 answers:
luda_lava [24]3 years ago
7 0

Answer:

(x-2 )= 18

(4xt1) = 81

i got it because x=20 mark branliest if you can thanks

Furkat [3]3 years ago
4 0
A is 18 degrees
B is 81 degrees
C is 81 degrees

I solved this problem by finding x, then plugging it into each little equation. B and C are the same because is is an isosceles triangle. You can tell this from the beginning because their equations are the same. Hope this helps :)
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(3x²+3x+5)+(7x²-9x=8)=10x²-12x=13
Brilliant_brown [7]

The value of x is equal to -5/6

To solve this question, we have to add two polynomials together. The polynomials are;

  • 3x^2+3x+5
  • 7x^2-9x=8
<h3>Addition of Polynomials</h3>

This involves adding of two or more different polynomials together. The polynomials adding together are or must be of the same degree. i.e x^2 must add to another coefficient of x^2 and x^3 adds to another coefficient of x^3 and so on.

In this given question, let's add the polynomials together.

(3x^2+3x+5) + (7x^2-9x = 8\)\\3x^2 + 7x^2 + 3x-9x+5-8 =10x^2-6x-3

Now, let's equate this with the last polynomial given

10x^2-6x-3=10x^2-12x-13\\10x^2-10x^2-6x+12x-3+13\\0+12x+10\\12x=-10

Let's solve for x

12x=-10\\x=-\frac{10}{12}\\x = -\frac{5}{6}

The value of x is equal to -5/6

Learn more on addition of polynomials here;

brainly.com/question/4142886

8 0
3 years ago
If y varies directly as x, and y is 6 when x is 72, what is the value of y when x is 8?
Eddi Din [679]

Answer:

2/3

Step-by-step explanation:

Y varies directly as x

Y =kx

Y=6 when x = 72

First find the relationship between y and x.

i.e find the value of k

Substitute the value of x and y

6 = k *72

Make k the subject of the formula

K = 6/72

K= 1/12

:. The rlationship between x and y is

Y = 1/12x

When x is 8

Y = 1/12 * 8

Y = 8/12

Y = 2/3 and that is the answer

Hope it helped you

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Answer:

C. No, the image does not have the same orientation.

Step-by-step explanation:

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Step-by-step explanation:

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