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pickupchik [31]
2 years ago
5

Solve the system of linear equations. −x+2y=7 x−2y=7

Mathematics
2 answers:
ivolga24 [154]2 years ago
6 0
The answer is no solution.
hope that helps!
gregori [183]2 years ago
5 0
The answer is infinity *no solution*
have a good day!
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PLEASE help ASAP will make brianlist
vitfil [10]

Answer:

second one

Step-by-step explanation:

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3 years ago
For a road trip a car of travelers can take the direct route or the scenic route. The scenic route takes 25% longer than the dir
MariettaO [177]

Answer:

the scenic route take 6h 40m

Step-by-step explanation:

first we have to make an equation that represents the relationship of each route

x = scenic route

y = direct route

x = y + y * 25/100

now we have to make an equation that represents the routes over time

x + y = 12

we replace the x by what is the same in the first equation (y + y * 25/100) in the second equation

x + y = 12

(y + y * 25/100) + y = 12

2 y + 0.25 y = 12

2.25y = 12

y = 12/2.25

if we spend this in minutes multiplying it by 60

y = 12/2.25 * 60 = 320 m = 5h 20m

x + y = 12

x + (5h 20m) = 12h

x = 12h - 5h 20m

x = 6h 40m

6 0
3 years ago
Read 2 more answers
Which figure represents the image of trapezoid LMNP after a reflection across the x-axis? figure A figure B figure C figure D
Andrews [41]

Answer:

figure A

Step-by-step explanation:

it’s in the same cordinates but reflected across the x axis

4 0
3 years ago
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In converting 9 yards to inches, what unit (omit the number) would you place in the numerator of your ratio? Remember that there
mamaluj [8]

Answer:

  inches

Step-by-step explanation:

The "to" unit goes in the numerator. (The "from" unit goes in the denominator.) Since we're converting to inches, the numerator of the conversion factor has units of inches.

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  9 yd = 9 yd × (36 in)/(1 yd) = 324 in

5 0
3 years ago
Based on the tree diagram below, what is the probability that a student doesn't have lice, given that the student tested negativ
oee [108]

Answer:

Option D (APEX)

Step-by-step explanation:

L= Student has lice

NL= Student has no lice

PT=Test Shows positive

NT=Test Shows negative

P(\frac{NT}{NL}) =0.7708 (Probability that a student has no lice and the test shows negative)

P(\frac{NT}{L}) = 0.0108 ( Probability that a student has lice and the test shows negative)

  1. P\frac{NT}{NL} = \frac{P\frac{NT}{NL} }{P\frac{NT}{NL} +P\frac{NT}{L} }
  2. \frac{0.7708}{0.7708+00108}
  3. \frac{0.7708}{0.7816}
  4. 0.98618219 (Simplify)

<u> Terms Of Percentages</u>

0.98618219 × 100

=98.6

Therefore your answer is 98.6% (Option D)

APEX

3 0
2 years ago
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