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3 years ago

Find the measure for angle DEF

Mathematics

2 answers:

Rashid [163]3 years ago

8 0

The answer is 31.8
It’s a right angle which equals 90 degrees, so you subtract 58.2 and 90. You get 31.8

nadezda [96]3 years ago

4 0

Answer:

Step-by-step explanation:

∠DEF=90-58.2=31.8°

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Kobotan [32]

We can convert 7/10 to a decimal first.

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6 0

3 years ago

Can someone please help me?

Vladimir79 [104]

Answer:

Option D is the correct option.

Step-by-step explanation:

y = - 2x - 3 → Equation ( i )

y = 3x + 2 → Equation ( ii )

Using elimination method

y + 2x = - 3

y - 3x = 2

---------------------

5x = - 5

Divide both sides of the equation by 5

$\frac{5x}{5} = \frac{ - 5}{5}$

Calculate

$x = - 1$

Again, Putting the value of x in equation ( ii ) in order t get the value of y

$y = 3x + 2$

plug the value of x

$= 3 \times ( - 1) + 2$

Any expression multiplied by ( - 1 ) equals it's opposite

$= - 3 + 2$

Calculate

$= - 1$

Therefore, The possible solution of the system is the ordered pair ( x , y )

$(x \:, y \: ) = ( - 1 \:, - 1)$

-----------------------------------------------------------------------

Check if the given ordered pair is the solution of the system of equation

$- 1 = - 2 \times ( - 1) - 3$

$- 1 = 3 \times ( - 1) + 2$

Simplify the equation

$- 1 = - 1$

Since all the equalities are true, the ordered pair is the solution of the system.

Hope this helps..

Best regards!!

7 0

3 years ago

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elena-s [515]

Answer:

The answer is Rectangular

Step-by-step explanation:

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saveliy_v [14]

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4 years ago

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