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Semmy [17]
3 years ago
12

What is the answer to 13/56 + 5/7=?

Mathematics
2 answers:
insens350 [35]3 years ago
7 0
<em>∙•❁</em>We are going to solve this step by step:

\frac{13}{56} + \frac{5}{7}

\frac{13}{56} + \frac{40}{56}

\frac{13+40}{56}

<em>∙•❁</em>Your final answer is:

\frac{53}{56}

<em>∙•❁I hope this helps!❁•∙ </em>
san4es73 [151]3 years ago
5 0
To do this, you have to change it into common denominators.  The common denominator is 56, in this case.  Multiply 5 by 8 because 56 divided by 7 is 8.  There fore you would be adding 13/56 and 40/56.  You would be 53/56.   This is already in simplest form.
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anastassius [24]
I am guessing the answer is C.

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5 0
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Lee and Lyn both invested their birthday money. Lee put his money in a savings account that earned 8% simple interest annually.
tatyana61 [14]
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aev [14]

Answer:

The correct answer is A) x = 1/4y^2

Step-by-step explanation:

Because the parabola opens to the side, we know that this is an x = equation. This allows us to eliminate both C and D.

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5 0
3 years ago
50 Points Please show graph
worty [1.4K]

Answer:

The solutions are x = -9 , x = -5

Step-by-step explanation:

* Lets find the vertex of the parabola

- In the quadratic equation y = ax² + bx + c, the vertex of the parabola

 is (h , k), where h = -b/2a and k = f(h)

∵ The equation is y = x² + 14x + 45

∴ a = 1 , b = 14 , c = 45

∵ h = -b/2a

∴ h = -14/2(1) = -14/2 = -7

∴ The x-coordinate of the vertex of the parabola is -7

- Lets find k

∵ k = f(h)

∵ h = -7

- Substitute x by -7 in the equation

∴ k = (-7)² + 14(-7) + 45 = 49 - 98 + 45 = -4

∴ The y-coordinate of the vertex point is -4

∴ The vertex of the parabola is (-7 , -4)

- Plot the point on the graph and then find two points before it and

 another two points after it

- Let x = -9 , -8 and -6 , -5

∵ x = -9

∴ y = (-9)² + 14(-9) + 45 = 81 - 126 + 45 = 0

- Plot the point (-9 , 0)

∵ x = -8

∴ y = (-8)² + 14(-8) + 45 = 64 - 112 + 45 = -3

- Plot the point (-8 , -3)

∵ x = -6

∴ y = (-6)² + 14(-6) + 45 = 36 - 84 + 45 = -3

- Plot the point (-6 , -3)

∵ x = -5

∴ y = (-5)² + 14(-5) + 45 = 25 - 70 + 45 = 0

- Plot the point (-5 , 0)

* To solve the equation x² + 14x + 45 = 0 means find the value of

  x when y = 0

- The solution of the equation x² + 14x + 45 = 0 are the x-coordinates

 of the intersection points of the parabola with the x-axis

∵ The parabola intersects the x-axis at points (-9 , 0) and (-5 , 0)

∴ The solutions of the equation are x = -9 and x = -5

* The solutions are x = -9 , x = -5

5 0
3 years ago
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