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3 years ago

What is the measure of ∠ADC?

Mathematics

2 answers:

Pachacha [2.7K]3 years ago

4 0

Answer:

131

Step-by-step explanation:

Serga [27]3 years ago

4 0

Answer:

The angle measure is 131

Step-by-step explanation:

It's 131 because you add angle ADB and angle BDC which will give you the angle measurement 131 . If it is the length measurement, then there isn't enough information.

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Reagan solved 5.25 ÷ 5 and got 105. What did Reagan do wrong?

horrorfan [7]

Answer:

he forgot to put the decimal point

Step-by-step explanation:

answer is 1.05.

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2 years ago

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A cylinder has a surface area of 502.4 square inches and a height of 11 inches. What is the volume? PLEASE HELP!!

I am Lyosha [343]

Answer:

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Step-by-step explanation:

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2 years ago

if the diameter of the concentric circles as shown in the given figure are in the ratio 1:2:3 then find the ratio of the areas o

Monica [59]

Answer:

1 : 4 : 9

Step-by-step explanation:

Given the ratio of diameters = a : b , then

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3 years ago

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$10 is what % of $10 I need how it is worked out

klasskru [66]

Answer:

To work out the percentage, all you have to do is divide the first subject by the second and multiply that by 100%.

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Step-by-step explanation:

Hope this helped!

6 0

3 years ago

Evaluate the integral Integral ∫ from (1,2,3 ) to (5, 7,-2 ) y dx + x dy + 4 dz by finding parametric equations for the line seg

n200080 [17]

$\vec F(x,y,z)=y\,\vec\imath+x\,\vec\jmath+3\,\vec k$

is conservative if there is a scalar function $f(x,y,z)$ such that $\nabla f=\vec F$ . This would require

$\dfrac{\partial f}{\partial x}=y$

$\dfrac{\partial f}{\partial y}=x$

$\dfrac{\partial f}{\partial z}=3$

(or perhaps the last partial derivative should be 4 to match up with the integral?)

From these equations we find

$f(x,y,z)=xy+g(y,z)$

$\dfrac{\partial f}{\partial y}=x=x+\dfrac{\partial g}{\partial y}\implies\dfrac{\partial g}{\partial y}=0\implies g(y,z)=h(z)$

$f(x,y,z)=xy+h(z)$

$\dfrac{\partial f}{\partial z}=3=\dfrac{\mathrm dh}{\mathrm dz}\implies h(z)=3z+C$

$f(x,y,z)=xy+3z+C$

so $\vec F$ is indeed conservative, and the gradient theorem (a.k.a. fundamental theorem of calculus for line integrals) applies. The value of the line integral depends only the endpoints:

$\displaystyle\int_{(1,2,3)}^{(5,7,-2)}y\,\mathrm dx+x\,\mathrm dy+3\,\mathrm dz=\int_{(1,2,3)}^{(5,7,-2)}\nabla f(x,y,z)\cdot\mathrm d\vec r$

$=f(5,7,-2)-f(1,2,3)=\boxed{18}$

8 0

3 years ago