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Wittaler [7]
3 years ago
7

Help me pleasee :) :)

Mathematics
1 answer:
andreyandreev [35.5K]3 years ago
8 0
I know that one is obtuse and acute
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Find the area of the semicircle need help asapp
sergij07 [2.7K]

Answer:

2 pi

Step-by-step explanation:

The radius is 2

The area of a circle is

A = pi r^2

We have 1/2 of a circle so

1/2 A = 1/2 pi r^2

         =1/2 pi ( 2)^2

         =1/2 pi *4

      = 2 pi

4 0
3 years ago
In triangle PQR, PR = 23mm, QR = 39mm, and m<R = 163 degrees. Find the area of the triangle to the nearest tenth.
Schach [20]

Answer: 131.1287 square mm (approx)

Step-by-step explanation:

The area of a triangle,

A=\frac{1}{2} \times s_1\times s_2\times sin \theta

Where s_1 and s_2 are adjacent sides and \theta is the include angle of these sides,

Here PR and QR are adjacent sides and ∠R is the included angle of these sides,

Thus, we can write,

s_1 = PR= 23\text{ mm}, s_2=QR=39\text{ mm} and \theta = 163^{\circ},

Thus, the area of the triangle PQR,

A=\frac{1}{2} \times 23\times 39\times sin163^{\circ}

A=\frac{262.257419136}{2} = 131.128709568\approx 131.1287\text{ square mm}

5 0
3 years ago
Find the equation of a line given the point and slope below. Arrange your answer in the form y = mx + b, where b is the constant
Dvinal [7]

Answer:

y = 2x + 1

Step-by-step explanation:

Given a point and the slope, we can plug in these values into the equation to find the value of b:

y = mx + b

3 = 2(1) + b

3 = 2 + b

1 = b

Plug b into the equation:

y = 2x + 1

6 0
3 years ago
Read 2 more answers
Evaluate expressions 9+11g-4h g=2 h=7
UNO [17]
The given expression is :
9 + 11g - 4h. 

substitute h=7 and g = 2 in given expression, 

9 + 11(2) - 4(7) = 3. 

Hope this helps!
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3 years ago
What word means if you have spent my money that you earned
djverab [1.8K]

mad money petty cash pin cash pocket money and small change

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3 years ago
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