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3 years ago

14

I Really Need Help With This Please.

2 answers:

Flura [38]3 years ago

6 0

ABC=DBC

(This will probably be a way more complex explanation than you need but it’s what I did.)

Okay so you know B=B because they’re both right angles. You know A=D because of the isosceles triangle theorem- if two sides of a triangle are congruent, then the angles opposite those sides are congruent. That leaves C=C. If B=B and A=D and all triangles add up to 180 degrees, C and C need to be the same.

erica [24]3 years ago

3 0

Answer:

the third option

Step-by-step explanation:

the middle alphabet must be the angle point. since the angle point for ABC is B and B is a right angle, the other right angle is D

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3 years ago

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A sweater is 65% wool by weight. If the sweater weighs 12.4 ounces how many ounces of wool is the sweater?

Mashutka [201]

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Step-by-step explanation:

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3 years ago

Find the average value of the function on the given interval.<br> f(x)=2 ln x; [1,e]

JulijaS [17]

Answer:

$f_{avg}=\frac{1}{e-1}$

Step-by-step explanation:

We are given that a function

$f(x)=2lnx$

We have to find the average value of function on the given interval [1,e]

Average value of function on interval [a,b] is given by

$\frac{1}{b-a}\int_{a}^{b}f(x)dx$

Using the formula

$f_{avg}=\frac{1}{e-1}\int_{1}^{e}lnx dx$

By Parts integration formula

$\int(uv)dx=u\int vdx-\int(\frac{du}{dx}\int vdx)dx$

u=ln x and v=dx

Apply by parts integration

$f_{avg}=\frac{1}{e-1}([xlnx]^{e}_{1}-\int_{1}^{e}(\frac{1}{x}\times xdx))$

$f_{avg}=\frac{1}{e-1}(elne-ln1-[x]^{e}_{1})$

$f_{avg}=\frac{1}{e-1}(e-0-e+1)=\frac{1}{e-1}$

By using property lne=1,ln 1=0

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3 years ago

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inessss [21]

2x^2 +3x -4 +8 -3x -5x^2 +2
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Answer is C) -3x^2 + 6

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3 years ago

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