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Alexandra [31]
4 years ago
5

9x-5y=29 find the value of y when x equals 1

Mathematics
2 answers:
svp [43]4 years ago
7 0
9x - 5y = 29....when x = 1
9(1) - 5y = 29
9 - 5y = 29
-5y = 29 - 9
-5y = 20
y = 20/-5
y = -4 <==
qaws [65]4 years ago
4 0
Y: -4 
9x-5y=29
9-5y=29
5y=20
-5y/-5=20
y=-4
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Ana drew a map of the Panama Canal. In the scale Ana used for the map, 4 centimeters represents 20 kilometers. The actual length
yawa3891 [41]

Answer:

Length of the canal on the map is 16.4 centimeters.

Step-by-step explanation:

If actual length of Panama Canal = 20 kilometers

and length of the canal on map = 4 centimeters

Then scale factor = \frac{\text{Length of canal on map}}{\text{Actual length of canal}}

= \frac{4}{20}

= \frac{1}{5}

If the actual length of Panama Canal = 82 kilometers

Then the length of canal on the map = Actual length × Scale factor

= 82\times \frac{1}{5}

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Therefore, length of the canal on the map is 16.4 centimeters.

4 0
4 years ago
If you choose to name an angle using just one letter, where on the angle must that
Natali [406]

Answer:

On the angle ?

Step-by-step explanation:

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3 0
3 years ago
Read 2 more answers
What is the axis of symmetry for the graph of y – 4x = 7 – x2 ?
enyata [817]

Answer:

  x = 2

Step-by-step explanation:

A graph shows the axis of symmetry easily. It is the x-coordinate of the vertex.

  x = 2

__

You can rearrange the equation to ...

  y -7 = 4x -x^2

  y -7 = x(4 -x)

The axis of symmetry is halfway between x-values that give the same y-value. Here, y=7 for x=0 and for x=4. That is, the right side of this equation is zero at those x-values. The axis of symmetry is halfway between, at x = (0+4)/2 = 2

The axis of symmetry is x=2.

_____

<em>Alternate solutions</em>

In standard form,

  ax^2 +bx +c = y

the axis of symmetry is ...

  x = -b/(2a)

Putting this equation into that form, we have ...

  -x^2 +4x +7 = y

  x = -(4)/(2(-1))

  x = 2 . . . . axis of symmetry

__

We can rearrange the equation to vertex form.

  y -7 = -x^2 +4x

  y -7 -4 = -(x^2 -4x +4) . . . . . add the square of half the x-coefficient inside parentheses. Add an equal amount to the other side of the equation.

  y -11 = -(x -2)^2

This tells us the vertex of the graph is (2, 11), so the axis of symmetry is x=2.

4 0
3 years ago
Find the equivalent expression.
liq [111]

Answer:

-3x-2y+3

Step-by-step explanation:

7 0
3 years ago
247 divided by 7<br><img src="https://tex.z-dn.net/?f=247%20%5Cdiv%207" id="TexFormula1" title="247 \div 7" alt="247 \div 7" ali
Mashcka [7]

Answer:

247/7 = 35 2/7

247/7 = 35 reminder 2

247/7 = 35.2857142857...

Step-by-step explanation:

             35      

          ----------------------------------

   7    |   247

             21

          -----------

               37

               35

             ---------

                 2

247/7 = 35 2/7

247/7 = 35 reminder 2

247/7 = 35.2857142857...

4 0
3 years ago
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