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2 years ago

Brainliest fir CORRECT answer

Mathematics

1 answer:

viktelen [127]2 years ago

4 0

Answer:

y ≈ 5.2

Step-by-step explanation:

∠ F = 180° - (42 + 48)° ← sum of angles in a triangle

∠ F = 180° - 90° = 90°

Thus Δ DEF is right at F

Using the sine ratio in the right triangle

sin48° = $\frac{opposite}{hypotenuse}$ = $\frac{DF}{DE}$ = $\frac{y}{7}$ ( multiply both sides by 7 )

7 × sin48° = y , then

y ≈ 5.2 ( to the nearest tenth )

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2 years ago

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$x_ {1} = - 7 + 8i\\x_ {2} = - 7-8i$

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Brainliest fir CORRECT answer ​

Brainliest fir CORRECT answer