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Ad libitum [116K]
2 years ago
14

Question 2

Mathematics
1 answer:
xz_007 [3.2K]2 years ago
6 0

The correct answer is: x = 8 (Option D)

Explanation:

Given ΔABC≅ΔDFE (Triangle ABC is congruent to triangle DFE).

It means that angle B is congruent to angle F, and C is congruent to E ( likewise A is congruent to D). By using this argument, we can say that, BC≅FE. Consequently, we can safely say that the lengths of those sides are also equal in measure. Therefore,

BC = 20

FE = 3x - 4

Since,

BC = FE (By using congruence statement mentioned above)

20 = 3x - 4

3x = 20+4

3x = 24

x = 8

Hence the correct answer is: x = 8

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Given that f(x) = 19x2 + 152, solve the equation f(x) = 0
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<em><u>Option A</u></em>

<em><u>The solution is:</u></em>

x = \pm 2i \sqrt{2}

<em><u>Solution:</u></em>

f(x) = 19x^2+152

We have to solve the equation f(x) = 0

Let f(x) = 0

0=19x^2+152

Solve the above equation

19x^2 + 152 = 0

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I need help understanding this and help with the problems...
Pavel [41]

1. 15+37=?

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  • 37=30+7 (given on the diagram)
  • add digits to digits 5+7=12=10+2
  • add tens to tens 10+30+10=50
  • add tens and digits 50+2=52.

2. 22+49=?

  • 22=20+2 (given on the diagram)
  • 49=40+9 (given on the diagram)
  • add digits to digits 2+9=11=10+1
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  • add tens and digits 70+1=71.

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  • 26=20+6 (given on the diagram)
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  • add tens and digits 60+4=64.

Answer: 1) 52; 2) 71; 3) 64.

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