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3 years ago

What is the area? PLEASE HELP

Mathematics

2 answers:

mylen [45]3 years ago

7 0

Answer:

14mm×20mm=280mm²

14mm×12mm/2=84mm²

3.14×10²mm=314mm²

280m²+84mm²+314mm²=678mm²

Shalnov [3]3 years ago

7 0

Answer:

521mm^2

Step-by-step explanation:

First, separate the shapes.

-Half circle= diameter of 20, radius 10

-Rectangle= 14x20

-Triangle= (32-20)x14= 12x14

Then, calculate

Circle equation= (pi)r^2= (pi)(10)^2= 314.16 -> divide by 2 for half circle= 157.1

Rectangle= 14x20=280

Triangle= (12x14)=168 -> Divide by two because it's a triangle= 84

Add 157 + 280 + 84 and you get 521

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Answer:

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Step-by-step explanation:

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3 years ago

Given that EF is a diameter of circle D, which of the following arcs must be a major arc?

Rainbow [258]

Answer:

Arc ECG is the major arc

Step-by-step explanation:

Arc ECG is made by an angle which is greater than 180°.

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3 years ago

Which of the following is the difference of two squares

Roman55 [17]

Answer:

2nd option

Step-by-step explanation:

A difference of squares has the general form

a² - b²

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16a² - 4y²

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7 0

2 years ago

Determine the next step for solving the quadratic equation by completing the square

GaryK [48]

Answer:

The two solutions are: $x=\frac{1}{2}+/-\frac{\sqrt{7} }{2}$

The next and every step are below.

Explanation:

1. $-3=-2x^2+2x$ : Given (addition property / add - 3 to both sides)

2. $-3 = - 2(x^2-x)$ : Given (commom factor - 2)

3. $-3-1/2=-2(x^2-x+1/4)$

To obtain the perfect square it was added the square of half of the coefficient of x: (1/2)² = 1/4, inside the parenthesis.

Since, the terms inside the parentthesis are multiplied by - 2, you have to add - 2 (1/4) = - 1/2 to the left side of the equation.

4. Now, you have that the trinomial x² - x + 1/4 is a square perfect trinomial which is factored as (x - 1/2)² and get the expression:

$-7/2=-2(x-1/2)^2$

5. Divide both sides by - 2 to get the next expression:

$-7/4=(x-1/2)^2$

6. The last step is to extract squere root from both sides of the equality:

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8 0

3 years ago

Can someone help for brainliest

const2013 [10]

Answer:

hypotenuse is 34

Step-by-step explanation:

a²+b²=c²

16²+30²=c²

256+900=1156

√1156 =34

hypotenuse =34

6 0

3 years ago