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True [87]
2 years ago
12

Suppose triangle bca is congruent to triangle ecd. which statement is not necessarily true?

Mathematics
1 answer:
natali 33 [55]2 years ago
5 0
Answer is <span>a) line BC is congruent to line CD

this is not true

BC should be </span>congruent to line EC, not CD
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A 32 foot ladder is leaning against a building and forms a 29.37 angle with the ground how far away from the building is the bas
BARSIC [14]

Answer:

the base of the ladder is 27.89  ft away from the building

Step-by-step explanation:

Notice that this situation can be represented with a right angle triangle. The right angle being that made between the ground and the building, the ladder (32 ft long) being the hypotenuse of the triangle, the acute angle of 29.37^o being adjacent to the unknown side we are asked about (x). So, we can use the cosine function  to solve this:

cos(\theta)=\frac{adjacent}{hypotenuse} \\cos(29.37^o)=\frac{x}{32\,\,ft}\\32 \,\,cos(29.37^o)\,\,ft=x\\x=27.887\,\,ft

which rounded to the nearest hundredth gives;

x = 27.89  ft

6 0
2 years ago
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Point C(3.6, -0.4) divides AB in the ratio 3:2. If the coordinates of A are (-6, 5), the coordinates of point B are ___. If poin
kari74 [83]
When a point divides a line segment into ratios of k1:k2, the formula to find the coordiates of the point is:
x=(k2*x1+k1*x2)/(k1+k2), y=(k2*y1+k1*y2)/(k1+k2), 
(x1,y1) being the coordinates of the starting point, and (x2,y2) coordinates of the end point. 
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-12+3x2=18
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use the same method to find y2: -0.4=(2*5+3y2)/5
3y2=-12
y2=-4
so the the coordinates of B is (10,-4)

use the same method to find the coordinates of D.

the answer I've got for D is (58/9, -2) please double check my calculation.
4 0
2 years ago
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Which statement shows how two polynomials 5x − 6 and 6x + 2 demonstrate the closure property when multiplied?
Sunny_sXe [5.5K]
I dont see any statements. When you multiply the two you get: 30x^2 - 26x -12.
8 0
2 years ago
For number one I need help
bezimeni [28]
2/4 of orange paint, he took 1/4 off red so he has to take 1/4 off yellow as well
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2 years ago
Three times the sum of half Carlita's age and 3 is at least 12. What values represent Carlita's possible age?
cestrela7 [59]

Answer:

at least 6

Step-by-step explanation:

3(.5x+3)>12

1.5x+9>12

1.5>9

x>6

5 0
2 years ago
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