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2 years ago

Solve: 63z2+61z=−6. Multiple answers

Mathematics

1 answer:

vodomira [7]2 years ago

6 0

z = -1/9 , -6/7

Have a nice day!

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Angles 2 and angle 7 are ??? angles

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Gary surveys all of his classmates for a project.

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A and D

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Piper works at a camera store. He is paid an hourly rate +16% commission on everything he sells. One week, he was paid $515 for

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His hourly rate is $13.75.

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3 years ago

There are six professors teaching the introductory discrete mathematics class at someuniversity. The same final exam is given by

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Prove that the triangle EDF is isosceles. Give reasons for your answer.

Gekata [30.6K]

Answer:

$\triangle EDF$ is isosceles.

Step-by-step explanation:

Please have a look at the attached figure.

We are given the following things:

$\angle EDF = y$

$\text{External }\angle DFG = 90 +\dfrac{y}{2}$

Let us try to find out $\angle E$ and $\angle DFE$ . After that we will compare them.

Finding  $\angle DFE$ :

Side EG is a straight line so $\angle GFE = 180$

$\angle GFE$ is sum of internal $\angle DFE$ and external $\angle DFG$

$\angle GFE = 180 = \angle DFE + \angle DFG\\\Rightarrow 180 = \angle DFE + (90+\dfrac{y}{2})\\\Rightarrow \angle DFE = 180 - 90 - \dfrac{y}{2}\\\Rightarrow \angle DFE = 90 - \dfrac{y}{2} ....... (1)$