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prohojiy [21]
3 years ago
6

Read the proof.

Mathematics
2 answers:
olga2289 [7]3 years ago
8 0

Solution:

Given: In ΔA EC and Δ B DC  

Prove: Δ A EC ~ ΔB DC

Proof:

1. In Δ A EC and ΔB DC

2. ∠A EC = ∠B DC= 90°→→definition of perpendicular

3. ∠A EC ≅ ∠B DC →→All right angles are congruent

4. ∠ACE=∠BCD=∠ACE→→Reflexive property

5. ΔAEC ~ ΔBDC→→→AA similarity theorem

Option A : .∠ACE ≅ ∠ACE is true.

In-s [12.5K]3 years ago
6 0
<span>The reflexive property of equality states that a value is equal to itself. (i.e. for all real numbers, x = x.</span>)

Given that the reason for the missing statement, it means that the similarlity statement is equal to it self.

Having proved in statement 3 that <span>∠AEC ≅ ∠BDC both being right angles, it can be seen that the angle both have in common is angle C.

Thus, to statement 4 shows that angle C is congrent to itself.

Therefore, the missing statement in step 4 is </span><span>∠ACE ≅ ∠ACE</span>
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A spinner has the numbers 1 thru 9. The spinner is spun once. 
uysha [10]

C.33.33%

There is a 3 out of 9 chances for the spinner on 3,6, or 8. divide 3 by 9 and multiple by a 100 to get the percentage.

8 0
3 years ago
Helppp me please IREADY​
Morgarella [4.7K]

Hello there! The answer is the first option, 31/55.

To solve this, we don't even need to do any math. Note that fractions with the same numerator and denominator will be equal to 1.

Knowing this and looking at our second and fourth options, 55/55 x 111 and 31/31 x 111, these problems are the same as 1 x 111, which results in 111, which is not less than, leaving us with the third and first options.

The third option is 55/31, meaning we have more than a whole, so we are multiplying by a number greater than 1, making our answer over 111 and this option not correct.

This leaves the first option as your answer!

7 0
3 years ago
Find the length of AB. help asap !!!
Stella [2.4K]

Answer:

AB = sqrt 74 = 8.602

Step-by-step explanation:

simple:

a^2+b^2=c^2

5^2+7^2=74

ab=sqrt 74

Formula :

Distance between two points = √(xB−xA)2+(yB−yA)2(xB-xA)2+(yB-yA)2

Solution :

Distance between two points = √(8−3)2+(2−9)2(8-3)2+(2-9)2

= √52+(−7)252+(-7)2

= √25+4925+49

= √7474 = 8.6023

Distance between points (3, 9) and (8, 2) is 8.6023

3 0
2 years ago
Simplify 7 · 2² ÷ 4 ± 12
Romashka-Z-Leto [24]
I believe the answer is
-5
4 0
3 years ago
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Allisa [31]

Answer:

7%

Step-by-step explanation:

25/360 × 100 = 6.944

4 0
2 years ago
Read 2 more answers
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