3 years ago

Irections: Find the area of each figure round to the nearest tenth where necessary. 2

Mathematics

1 answer:

Tcecarenko [31]3 years ago

7 0

Answer:

21 x 33 = 693

16 x 7 divided by 2 = 216

17.6 x 17.6 divided by 2 = 154.9

19 x 7.8 = 148.2

7 + 2 x 5.5 divided by 2 = 24.8

10 x 12 = 120

Please wait for more responses if needed!

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Write an inequality to respresent the situation.

nasty-shy [4]

Answer:

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Step-by-step explanation:

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3 years ago

Which two values of x are roots of the polynomial below?<br> x2 + 5x+7

Dmitry [639]

Answer:

The roots are

$x=\frac{-5+i\sqrt{3}}{2}$ and $x=\frac{-5-i\sqrt{3}}{2}$

Step-by-step explanation:

we have

$x^{2} +5x+7$

To find the roots equate the polynomial to zero and cmplete the square

$x^{2} +5x+7=0$

$x^{2} +5x=-7$

$(x^{2} +5x+2.5^{2})=-7+2.5^{2}$

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rewrite as perfect squares

$(x+2.5)^{2}=-0.75$

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$(x+2.5)=(+/-)\sqrt{-\frac{3}{4}}$

Remember that

$i=\sqrt{-1}$

substitute

$(x+2.5)=(+/-)i\sqrt{\frac{3}{4}}$

$(x+\frac{5}{2})=(+/-)i\frac{\sqrt{3}}{2}$

$x=-\frac{5}{2}(+/-)i\frac{\sqrt{3}}{2}$

therefore

The roots are

$x=\frac{-5+i\sqrt{3}}{2}$

$x=\frac{-5-i\sqrt{3}}{2}$

4 0

3 years ago

Is 3/5 of a mile closer than 1/2 mile?

defon

Yes because a half of 5 is two and five tenths.

4 0

3 years ago

Read 2 more answers

Mariana [72]

3 10 =30 2 10 + 10=30 so i think its ten they both equal 30

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3 years ago

Determine the missing term from the perfect square trinomial. Show ALL work.

V125BC [204]

Answer:

x² - 12x + 36

factored: (x - 6)(x - 6)

Step-by-step explanation:

5 0

3 years ago