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klasskru [66]
1 year ago
14

Can someone please tell me which one is correct??? The first screenshot is the question and the second screenshot is the options

I have. I am in dire need of help

Mathematics
1 answer:
astraxan [27]1 year ago
7 0

Answer:

43.5 unit^2.

Step-by-step explanation:

Area of the triangle

= 1/2 * base * height

= 1/2 * AB * AC.

AB = √ [(6-1)^2 + (6-8)^2] = √29

AC = √ [(8 - (-7))^2 + (1 - (-5)^2] = √261

So the area = 1/2 * √29  * √261

                    = 43.5

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A car travels 13 km in south east direction and then 16 km 40° north of east. Find the cars resultant direction. PLEASE HELP! AL
Neporo4naja [7]

Answer:

  about 2.9° north of east

Step-by-step explanation:

If we orient the directions so north is in the +y direction and east is in the +x direction, the car is traveling 13 km at an angle of -45°, then 16 km at an angle of +40°. We can add these vectors by adding their components in the x- and y-directions.

  13(cos(-45°), sin(-45°)) ≈ (9.19239, -9.19239)

  16(cos(40°), sin(40°)) ≈ (12.25671, 10.28460)

The sum of these vectors is then ...

  = (21.44910, 1.09221)

and the resultant angle is ...

  arctan(1.09221/21.44910) ≈ 2.915° . . . . measured north of east

The resultant direction is about 2.9° north of east.

7 0
2 years ago
Read 2 more answers
Find the gcf of 12, 18, and 84
Westkost [7]
Greatest Common Factor of 12,18,84.

Factors of 12:1,2,3,4,6,12
Factors of 18:1,2,3,6,9,18
Factors of 84:1,2,3,4,6,7, 12,14,21,28 42,84

The Greatest Common Factor (GCF) of all those three factors is 6.

The Greatest Common Factor is the greatest Factor in all the numbers. In this set, 12,84,84, 6 is the greatest, making it the Greatest Common Factor.

4 0
3 years ago
Read 2 more answers
a crew of highway workers paved 2/15 mile in 20 minutes.if they continued working at the same rate,what portion of a mile wil th
icang [17]

Answer:

2/5 of a mile

Step-by-step explanation:

The easiest approach is to realise that one hour is 3 times longer than  

20 minutes. The longer the time, the more they will pave.


2/5  of a mile, in 20 minutes, how much in 60 minutes?(#)

They will pave 3 times more.

2/15 x 3/1 = 6/15 of a mile

6/15 = 2/5 of a mile

8 0
3 years ago
Help help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
hram777 [196]

Answer:

I am pretty sure it is the 3rd one

(In geometry, an isosceles triangle is a triangle that has two sides of equal length. And i think 3 of them are an isosceles triangle)

4 0
3 years ago
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Find the value of the expression 63 - 21 + (3 x 11)
bixtya [17]

Answer: First solve the parentheses using order of operations. Then add and subtract from left to right.

Demo:

(3 * 11) = 33

Equation now looks like:

63 - 21 + 33

63 - 21 = 42

Equation now looks like:

42 + 33

42 + 33 = 75

The value of this expression is 75.

5 0
3 years ago
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