2 years ago

Help me w how to solve math problems like these pls

Mathematics

1 answer:

leonid [27]2 years ago

6 0

Answer:

x = 72

Step-by-step explanation:

For all polygons, the exterior angles add up to 360°

Since a pentagon has 5 exterior angles, you do

angle = 360 ÷ 5 = 72

here's a picture so you understand better

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Mustafa contributes 11% of his $67,200 annual salary to his 401(k) plan. What is his pretax income?

Juli2301 [7.4K]

11% of $67,200.
We need to keep in mind that some words and numbers here aren't important, like 401(k) plan.
So what is 11% of $67,200?

$\frac{11}{100} * $67,200
$

$11*$672$

$7392

Hope this helps!

5 0

3 years ago

Read 2 more answers

Question:

Tamiku [17]

Answer:

Step-by-step explanation:

$3x^2 + 12x + 6 = 0\\\\a=3\,,\ b=12\,,\ c=6\\\\\\ x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\ x=\dfrac{-12\pm\sqrt{12^2-4\cdot3\cdot6}}{2\cdot3}=\dfrac{-12\pm\sqrt{144-72}}{2\cdot3}=\dfrac{-12\pm\sqrt{72}}{2\cdot3}=\dfrac{-12\pm6\sqrt{2}}{6}\\\\x_1=\dfrac{6(-2+\sqrt{2})}{6}=-2+\sqrt2\\\\x_2=\dfrac{6(-2-\sqrt{2})}{6}=-2-\sqrt2$