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Natali [406]
3 years ago
15

Identify the values that create ordered pairs that are solutions to the equation 3x-5y=20

Mathematics
2 answers:
kvasek [131]3 years ago
8 0
The answer to your question is: x=10. y=2
IrinaVladis [17]3 years ago
3 0

Answer:

(5,-1)

(10,2)

Step-by-step explanation:

we have

The ordered pairs that are solutions to the equation 3x-5y=20 are

(5,y),(x,2)

Step 1

Substitute the value of x of the first ordered pair and solve for y in the equation

3(5)-5y=20

5y=15-20

y=-1

The first ordered pair is (5,-1)

Step 2

Substitute the value of y of the second ordered pair and solve for x in the equation

3x-5(2)=20

3x=20+10

x=10

The second ordered pair is (10,2)

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Hey there!

To start, the slope intercept equation format is y=mx+b where m=the slope and b=the y-intercept.

Because you appear to have a coordinate set to plug in for x and y as well as a slope of 4, you can plug your known values into the slope intercept equation:
y=mx+b
coordinate: (1,6)
y=6 (the y value of the coordinate point)
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Because b, your y-intercept is your only missing value, you can simplify your equation and solve for b:
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Now that you have your two needed values, your slope and your y-intercept, your final equation should be y=4x+2, or the third choice.

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3 years ago
Please help me answer this.
adoni [48]

Answer:

See explanation

Step-by-step explanation:

        Statements                         Reasons

1. \overline{AD}\parallel \overline{BC}                                        Given

2. \angle ADB\cong \angle CBD      As alternate interior angles when parallel lines AD and BC intersect by ltransversal BD

3. \overline{AD}\cong \overline{BC}                                     Given

4. \overline{BD}\cong \overline{DB}                     Reflexive property

5. \triangle ADB\cong \triangle CBD                  SAS postulate

6.  \angle ABD\cong \angle CDB              Corresponding parts of congruent triangles are congruent

7. \overline{AB}\parallel \overline{CD}            Inverse alternate interior angles theorem

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Answer:

1=90

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4=112

5=68

6=68

7=112

8=112

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