x = 4 and EF = 4 ⇒ 3rd answer
Step-by-step explanation:
If two triangles are congruent, then
1. Their corresponding sides are equal
2. Their corresponding angles are equal
3. Their areas and perimeters are equal
∵ △ ABC ≅ △ DEF
∴ AB ≅ DE
∴ BC ≅ EF
∴ AC ≅ DF
∵ BC = 4 x - 12
∵ EF = -3 x + 16
∵ BC = EF
∴ 4 x - 12 = -3 x + 16
Let us solve the equation to find x
∵ 4 x - 12 = -3 x + 16
- Add 3 x for both sides
∴ 7 x - 12 = 16
- Add 12 to both sides
∴ 7 x = 28
- Divide both sides by 7
∴ x = 4
Substitute the value of x in the expression of EF
∵ EF = -3 x + 16
∵ x = 4
∴ EF = -3(4) + 16 = -12 + 16
∴ EF = 4
x = 4 and EF = 4
Learn more:
You can learn more about congruence of Δs in brainly.com/question/3202836
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Samuel can only buy 5 batteries because the greatest common factor is 5
Answer:
3. 2/3
Step-by-step explanation:
y=tan(2arctan(1/3))
= 2tan(arctan(1/3))
= 2*1/3
= 2/3
2/9
Step-by-step explanation:
Slope in calculated as the ratio of change in y values divided by the change in x values
slope, m=Δy/Δx
Δy=8-6=2
Δx=6--3=9
m=2/9
Learn More
To calculate slope of a line :brainly.com/question/11267635
Keywords : slope, line, passes
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