3 years ago

50 POINTS

2 answers:

8 0

Answer: 68.992 in2

Explanation:

I’m assuming one of those measurements must be a width, so to find the area of a rectangle it is length x width.

So, it would be 8.96 in x 7.7 in, which gives you a squared unit (in2).

aleksandrvk [35]3 years ago

7 0

Answer:

thats only 25

Step-by-step explanation:

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Solving quadratic equations with complex solutions x2 + 4x + 8 = 0.

Daniel [21]

Answer:

$\large\boxed{x=-2\pm2i}$

Step-by-step explanation:

$x^2+4x+8=0\qquad\text{subtract 8 from both sides}\\\\x^2+4x+8-8=0-8\\\\x^2+2(x)(2)=-8\qquad\text{add}\ 2^2\ \text{to both sides}\\\\x^2+2(x)(2)+2^2=-8+2^2\qquad\text{use}\ (a+b)^2=a^2+2ab+b^2\\\\(x+2)^2=-8+4\\\\(x+2)^2=-4\iff x+2=\pm\sqrt{-4}\\\\x+2=\pm\sqrt{(4)(-1)}\qquad\text{use}\ \sqrt{ab}=\sqrt{a}\cdot\sqrt{b}\\\\x+2=\pm\sqrt4\cdot\sqrt{-1}\qquad\text{use}\ \sqrt{-1}=i\\\\x+2=\pm2\cdot i\qquad\text{subtract 2 from both sides}\\\\x=-2\pm2i$

4 0

3 years ago

5.The ratio of the age of a mother and her son is 5:2. If the

Andreyy89

Answer:

The age of mother is:

40 years

Step-by-step explanation:

2a = 5b

b = 16

a = age of a mother

b = age of her son

2a = 5*16

2a = 80

a = 80/2

a = 40

probe:

2*40 = 5*16 = 80

5 0

3 years ago

Equivalent equation for 4^2 =16

mihalych1998 [28]

Hello there!

To do this, we will take the square root from each side

4^2 would be 4

16 would be 4

4 = 4

I hope I helped!

~ Fire

7 0

3 years ago

Zach is 3 years older than twice his sister Maya’s age.

Flauer [41]

The answer is z=2m+3 so the first one is right

8 0

4 years ago

Read 2 more answers

Find the value or measure. Round answers to the nearest tenth, as needed.

Leni [432]

Answer:

its 34

Step-by-step explanation:

its half of the center angles

3 0

3 years ago