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galben [10]
3 years ago
8

Geometry... Please help and I'll mark brainliest. Triangle proofs & reasons

Mathematics
1 answer:
Korvikt [17]3 years ago
3 0

Step-by-step explanation:

m<ACB=m<CBD=90 degrees (given) and AB=DC (given)

BC=BC (reflexive property)

m<ABC=m<BCD (alternate interior angles)

triangle ABC is equivalent to triangle DCB by Angle Side Angle.

I think that's correct, I'm on this unit too.

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I beg someone to answer ive posted this 3 times and im still not sure how to do it.....
Anni [7]

Answer:

D) 3 X 10⁷

Step-by-step explanation:

<u>Estimated days:</u>

  • Jan 2000 to June 2001 = 1.5 years = 365*1.5 days ≈ 548 days

  • 1 day = 24 hours = 24*60 minutes = 24*60*60 seconds =
  • 86400 seconds

  • 548 days = 548 * 86400 seconds =
  • 47347200 ≈ 4.7*10⁷

Best estimate is D) 3 X 10⁷

8 0
3 years ago
-8(8 - x) = 4/5(x + 10)
Vedmedyk [2.9K]

Answer:

x = 10

Step-by-step explanation:

Solve for x:

-8 (8 - x) = (4 (x + 10))/5

Multiply both sides by 5:

-8×5 (8 - x) = (5×4 (x + 10))/5

(5×4 (x + 10))/5 = 5/5×4 (x + 10) = 4 (x + 10):

-8×5 (8 - x) = 4 (x + 10)

5 (-8) = -40:

-40 (8 - x) = 4 (x + 10)

Expand out terms of the left hand side:

40 x - 320 = 4 (x + 10)

Expand out terms of the right hand side:

40 x - 320 = 4 x + 40

Subtract 4 x from both sides:

(40 x - 4 x) - 320 = (4 x - 4 x) + 40

40 x - 4 x = 36 x:

36 x - 320 = (4 x - 4 x) + 40

4 x - 4 x = 0:

36 x - 320 = 40

Add 320 to both sides:

36 x + (320 - 320) = 320 + 40

320 - 320 = 0:

36 x = 40 + 320

40 + 320 = 360:

36 x = 360

Divide both sides of 36 x = 360 by 36:

(36 x)/36 = 360/36

36/36 = 1:

x = 360/36

The gcd of 360 and 36 is 36, so 360/36 = (36×10)/(36×1) = 36/36×10 = 10:

Answer:  x = 10

7 0
3 years ago
Simplify the expression 6(6-2x)- 10( + 1)​
dexar [7]

Answer:

−12x+26

Step-by-step explanation:

i said so kid

Use https://www.mathpapa.com/algebra-calculator.html

3 0
3 years ago
How many more marmosets are there than mandrills?
LekaFEV [45]

Answer:

3

Step-by-step explanation:

5 0
2 years ago
Pam is looking for a new car. She has test-driven two cars but can only purchase one. The probability that she will purchase car
laiz [17]
I am pretty sure it would be either .20 or .12.
5 0
3 years ago
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