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Musya8 [376]
3 years ago
10

Vectors, I need help plz

Mathematics
1 answer:
Aloiza [94]3 years ago
8 0

DC :AB=3:2 can be written as

DC/AB=3/2

Then you can get the answers easily

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Can someone answer this question please?
Mekhanik [1.2K]
Steps:
1. calculate the values of y at x=0,1,2. using y=5-x^2
2. calculate the areas of trapezoids (Bottom+Top)/2*height
3. add the areas.

1. 
x=0, y=5-0^2=5
x=1, y=5-1^2=4
x=2, y=5-2^2=1
2. 
Area of trapezoid 1 = (5+4)/2*1=4.5
Area of trapezoid 2 = (4+1)/2*1=2.5

Total area of both trapezoids = (4.5+2.5) = 7

Exact area by integration:
integral of (5-x^2)dx   from 0 to 2
=[5x-x^3/3] from 0 to 2
=[5(2-0)-(2^3-0^3)/3]
=10-8/3
=22/3
=7 1/3, slight greater than the estimation by trapezoids.

8 0
3 years ago
If two angles are complements of each other then each angle is
Elan Coil [88]

Answer:

each angle is less than 90 degrees. angle 1+angle2=90 degrees

Step-by-step explanation:

8 0
3 years ago
54 is 60% of what number? Enter your answer in the box. <br><br><br> PLZ HELP I WILL GIVE BRAINLIEST
ivolga24 [154]

Answer:

90

Step-by-step explanation:

you do 54 ÷ 60% = 90

check:

60% of 90 is 54 .

can I have brainliest.

5 0
3 years ago
Match each linear equation to the appropriate description: Column A 1. : 2. : 3. : 4. : Column B a. A linear equation with slope
timama [110]
<span>b. A linear equation with slope 5 and y-intercept 1 c. A linear equation with slope 2 and y-intercept 3 d. A linear equation with slope 3 and y-intercept 2

</span>
4 0
3 years ago
Read 2 more answers
Alicia drew a pentagon with equal side lengths and equal angles. Then she added red lines of symmetry to her drawing. How many l
son4ous [18]
A pentagon is a regular polygon with five equal sides and five equal interior angles. Also, it has five vertices. To draw the line that would divide the figure equally into two, we simply have to draw a line from one vertex and then extend the line to the opposite side.

Since, there are five vertices then, she will be able to draw five. 

<em>Answer: 5</em>
8 0
3 years ago
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