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Novay_Z [31]
2 years ago
10

5x+8y=62.9 x=4-y please solve correctly using substitution

Mathematics
2 answers:
Anarel [89]2 years ago
5 0

Answer:

x = − 10.3, y = 14.3

Step-by-step explanation:

Vedmedyk [2.9K]2 years ago
4 0
X= -10.3
Y= 14.3

Point form: (-10.3, 14.3)
You might be interested in
Which of the following sets of numbers could NOT represent the three sides of a triangle?
Vinvika [58]
Last one on the right bottom corner. {12,14,24}
3 0
3 years ago
I need help on some geometry questions
kupik [55]

Answer: x = 40

<u>Step-by-step explanation:</u>

3x + x + 20 = 180    <em>same side (consecutive) interior angles</em>

    4x  + 20 = 180

    4x           = 160

      x           = 40

****************************************************************************

Answer: x = 24

<u>Step-by-step explanation:</u>

6x - 24 + 2x + 12 = 180       <em>linear pair (supplementary angles)</em>

               8x - 12  = 180

               8x         = 192

                 x          = 24

****************************************************************************

Answer: x = 16

<u>Step-by-step explanation:</u>

base angles of an isosceles triangle are congruent

2(2x + 15) + 6x - 10 = 180       <em>triangle sum theorem</em>

4x + 30 + 6x - 10 = 180

             10x + 20 = 180

              10x         = 160

                 x          = 16

****************************************************************************

Let ∠1 and ∠2 represent the exterior angles in the diagram and "x" represent the same side (consecutive) interior angle with ∠1.

Then m∠1 + x = 180     <em>same side interior angle theorem</em>

and m∠2 + x = 180      <em>linear pairs are supplementary </em>

m∠1 + x = m∠2 + x     <em>transitive property</em>

m∠1  = m∠2               <em>subtraction property of equality</em>

   ∠1 ≈ ∠2                   <em>definition of congruency</em>



8 0
3 years ago
Need help with the 2nd problem
Murljashka [212]
Jesus go in google and search it up
7 0
3 years ago
X²+4x+20=0
andrezito [222]

Step-by-step explanation:

The general form of the quadratic equation is :

ax^2+bx+c

The given equation is x²+4x+20=0

On comparing the given equation and the general equation, we find that

a = 1, b = 4 and c = 20

Hence, the correct option is a=1 b =4 c = 20.

If the equation is 2x²+6x+5=0, then

a = 2, b = 6 and c = 5

If the equation is -2x²+x+5

a = -2, b = 1 and c = 5

7 0
3 years ago
Whats 87 + 72 tenths
Alchen [17]

Answer:

94.2

Step-by-step explanation:

google and simple addition

8 0
3 years ago
Read 2 more answers
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