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den301095 [7]
3 years ago
15

An isosceles triangle has legs that measure 10 feet. If the height of the triangle is 7 feet, find the length of its base

Mathematics
1 answer:
irinina [24]3 years ago
8 0

Answer:

14.2 feet

Step-by-step explanation:

I rounded off to 1 decimal place

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4 ice cream cones cost $6. At this rate, how much do 7 ice cream cones cost?
satela [25.4K]

Answer:

$42

Step-by-step explanation:

Equation: y = 6x

x = number of ice cream cones

y = 6(7) = 42

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How many miles did Brian run?
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5.28 miles

Step-by-step explanation:

he ran a total of 18 days. 95 miles dived by 18 days is 5.27 if you round it its 5.28

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I need help right now please!<br> I have 2 questions!
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1 is 28
2 is 13, 84, 85

Figure both by the Pythagorean Theorem<span />
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3 years ago
2x^2+3x-2, a=0 How do I find the derivative?
Ghella [55]

You can use the definition:

\displaystyle f'(x) = \lim_{h\to0}\frac{f(x+h)-f(x)}h

Then if

f(x) = 2x^2+3x-2

we have

f(x+h) = 2(x+h)^2+3(x+h) - 2 = 2x^2 + 4xh+2h^2+3x+3h-2

Then the derivative is

\displaystyle f'(x) = \lim_{h\to0}\frac{(2x^2+4xh+2h^2+3x+3h-2)-(2x^2+3x-2)}h \\\\ f'(x) = \lim_{h\to0}\frac{4xh+2h^2+3h}h \\\\ f'(x) = \lim_{h\to0}(4x+2h+3) = \boxed{4x+3}

I'm guessing the second part of the question asks you to find the tangent line to <em>f(x)</em> at the point <em>a</em> = 0. The slope of the tangent line to this point is

f'(0) = 4(0) + 3 = 3

and when <em>a</em> = 0, we have <em>f(a)</em> = <em>f</em> (0) = -2, so the graph of <em>f(x)</em> passes through the point (0, -2).

Use the point-slope formula to get the equation of the tangent line:

<em>y</em> - (-2) = 3 (<em>x</em> - 0)

<em>y</em> + 2 = 3<em>x</em>

<em>y</em> = 3<em>x</em> - 2

5 0
3 years ago
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