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den301095 [7]
3 years ago
15

How do you know that a =6 is a solution to a+5=11?

Mathematics
2 answers:
Mkey [24]3 years ago
8 0

We are given this equation a+5=11

here 5 is in addition on the left side

so in order to eliminate it , we perform opposite operation of addition on the right side.

opposite operation of addition is subtraction.

so subtracting 5 on the right side , we get

a=11-5

a=6

so this is how a=6 is the answer

NNADVOKAT [17]3 years ago
7 0

a + 5 = 11

You need to isolate the variable by subtracting from both sides

a + 5 - 5 = 11 - 5a = 6

The Addition/Subtraction Property of Equality states that if you add or subtract the same number to both sides of an equation the two sides still remain equal.

:))

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Can anyone help me set up a system of equations for these problems??
statuscvo [17]

Answer:

L = the length of the field

W = the width of the field

The First Question:

The system is: L - 12 = w

                         2L + 2W = 76

Plug in L - 12 for W and you will get

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4L = 100

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8 0
2 years ago
-8-3x=-8(1-7x) how many solutions will mark barilest
Lina20 [59]

Answer:

x=0

Step-by-step explanation:

-8-3x=-8(1-7x)

add 8 to both sides =( -3x=56x)

subtract 56x from both sides (-59x=0)

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5 0
2 years ago
60 POINTS FOR THE THISS!!!
Goryan [66]
Yes because they are constant throughout the table.
4 0
2 years ago
Read 2 more answers
PRE ALGEBRA / PLEASE HELP!!||| How many kilometers is it from the main gate to the Manatee Springs? (Hint: to convert from yards
mars1129 [50]

Answer:

  • 6.04 km (per angle marks)
  • 5.36 km (per side hash marks)

Step-by-step explanation:

Going by the angle indicators, the ratios of corresponding sides of the similar triangles are ...

  x/2000 = 4200/3500

  x = 2000·6/5 = 2400 . . . . yards

Then the distance of interest is ...

  (2400 yd + 4200 yd)×(0.0009144 km/yd) = 6.6×.9144 km

  = 6.03504 km ≈ 6.04 km

_____

Going by the red hash marks, the ratios of corresponding sides of the similar triangles are ...

  x/2000 = 3500/4200

  x = 2000·(5/6) = 5000/3 . . . . yards

Then the distance of interest is ...

  (5000/3 + 4200) yd × 0.0009144 km/yd ≈ 5.36 km

_____

<em>Comment on the figure</em>

The usual geometry here is that the outside legs (opposite the vertical angles) are parallel, meaning that the angle indicators are the correct marks. It is possible, but unusual, for the red hash marks to be correct and the angle indicators to be mismarked. The red hash marks seem tentatively drawn, so seem like they're more likely to be the incorrect marks.

7 0
2 years ago
Read 2 more answers
Cindy has 89 coins. If 15% are dimes, how many are not
Bumek [7]
Hi, 
to find out the answer you need to divide 89 by 10 than by 5. Add those two answers together which is 23.73. That answer is dimes so 89-23.73=65.27..:) you could round the number up. I hope it helps!!!
7 0
3 years ago
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