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3 years ago

3uv ——- help with answer? 4v

Mathematics

1 answer:

wariber [46]3 years ago

6 0

Answer:

1674831727833771724X

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The area of a trapezoid with height z is 20 sq .cm. The length s of the parallel sides are (2z+3) and (6z-1) cm. Find the height

const2013 [10]

Answer:

Area of a trapezoid = ½(a + b)h, where a and b are the lengths of the parallel sides and h is its height.

From your information 20 = ½(2z + 3 + 6z – 1)z = ½(8z + 2)z = z(4z + 1)

Solve 20 = 4z² + z which is 0 = 4z² + z – 20 using the quadratic formula

Step-by-step explanation:

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3 years ago

A chain saw requires 5 hours of assembly and a wood chipper 4 hours. A maximum of 40 hours of assembly time is available. The pr

iris [78.8K]

So first you need to by the chain saw and the chipper for $380. It should only take you about 9 hours to assemble it. And lets say that the 31 hours you were looking for the best of the best chain saw and chipper.

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3 years ago

HELP WILL MARK BRainlIEST WITH EXPLANATION

hichkok12 [17]

$Hello$ $There!$

The answer is...

$y=-8x+15.$

HERE'S THE EXPLANATION!

Let's solve for y.

$8x+y=15$

Step 1: Add -8x to both sides.

$8x+y+-8x=15+-8x$

$y=-8x+15$

THE ANSWER!

$y=-8x+15$

Hopefully, this helps you!!

$AnimeVines$

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3 years ago

When constructing an equilateral triangle by hand, which step comes after constructing a circle?

KonstantinChe [14]

Answer:

set compass to the radius of the circle

Step-by-step explanation: when constructing an equilateral triangle by hand . circle constructing by set compass to the radius of the circle and rotate it and come to the initial point

4 0

3 years ago

Read 2 more answers

F(x)=(x-6)e^-3x find the interval in which f(x) is increasing, the intervals on which f(x) is decreasing, and the local extrema

Over [174]

$\bf f(x)=(x-6)e^{-3x}\\\\
-----------------------------\\\\
\cfrac{dy}{dx}=1\cdot e^{-3x}+(x-6)-3e^{-3x}\implies \cfrac{dy}{dx}=e^{-3x}[1-3(x-6)]
\\\\\\
\cfrac{dy}{dx}=e^{-3x}(19-3x)\implies \cfrac{dy}{dx}=\cfrac{19-3x}{e^{3x}}$

set the derivative to 0, solve for "x" to get any critical points
keep in mind, setting the denominator to 0, also gives us critical points, however, in this case, the denominator will never be 0, so... no critical points from there

there's only 1 critical point anyway, and do a first-derivative test on it, check a number before it and after it, to see what sign the derivative has, and thus, whether the graph is going up or down, to check for any extrema

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3 years ago