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julsineya [31]
3 years ago
15

86% of what number is 77.4

Mathematics
2 answers:
mezya [45]3 years ago
8 0
66.564 is 86% of 77.4
Katarina [22]3 years ago
3 0
<span> 


 It's 66.564. Just, multiply 86 of 77.4 from each other </span>
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A triangle has a base length of 4ac2 and a height 5 centimeters more than the base length. Find the area of the triangle if a =
Darina [25.2K]

The area of the triangle is 52,000 cm².

<h3>What is the area of the triangle?
</h3>

A triangle is a three-sided polygon with three edges and three vertices. the sum of angles in a triangle is 180 degrees

Area of a triangle = 1/2 x base x height

  • Base = 4 x 5 x 4² = 320
  • Height = 320 + 5 = 325

Area = 1/2 x 320 x 325 = 52,000 cm²

To learn more about triangles, please check: brainly.com/question/22949981

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9. Select the proper inverse operation to check the answer to 14 + 17 = 31.
lana66690 [7]
I think the answer is A
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3 years ago
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6 0
3 years ago
Read 2 more answers
Find the equation of the tangent line at the point where the curve crosses itself. x = t^3-6t, y = t^2.
Sphinxa [80]

Here is the solution for this specific problem:

<span>Based from the graph, the curve will intersect itself at the y-axis, i.e. x = 0. </span><span>

</span><span>t^3 - 6t = 0 </span><span>
<span>t(t^2 - 6) = 0 </span>
<span>t = 0 or t = ± √6 </span>

<span>dx/dt = 3t^2 - 6 </span>
<span>dy/dt = 2t </span>

<span>dy/dx = 2t/(3t^2 - 6) </span>

<span>@ t = 0, dy/dx = 0. </span>
<span>x = 0, y = 0 </span>

<span>y = 0 </span>

<span>@ t = √6, dy/dx = 2√6/12 = √6/6 </span>
<span>x = 0, y = 6 </span>

<span>y - 6 = (√6/6) x </span>
<span>y = (√6/6)x + 6 </span>

<span>@ t = -√6, dy/dx = -2√6/12 = -√6/6 </span>
<span>x = 0, y = 6 </span>

<span>y - 6 = (-√6/6) x </span>
y = (-√6/6)x + 6</span>

So the equations of the tangent line at the point where the curve crosses itself are: <span>y = (√6/6)x + 6 and </span>y = (-√6/6)x + 6. I am hoping that these answers have satisfied your queries and it will be able to help you in your endeavors, and if you would like, feel free to ask another question.

4 0
4 years ago
The area of a rectangle is (x2 + 5x - 6) square units. Find an expression for the length of the rectangle if the width is (x + 6
mr_godi [17]

We know that we have to mutiply (x + 6) by something to make (x^2 + 5x - 6) Because 6 * -1 is -6, it seems logical that Option B, (x-1) units, is the answer.

4 0
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