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defon
3 years ago
7

Which postulate or theorem proves that △ABC and △EDC are congruent?

Mathematics
1 answer:
Lelechka [254]3 years ago
5 0

Answer:

SAS

Step-by-step explanation:

You are already given that two sides are congruent, thus making the "s" part. You can further say that two angles are congruent, due to the verticle angle theorem!

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Use the diagram to complete the statement.<br><br><br><br> CF =
kondor19780726 [428]

Answer:

∠ECF = 37°

Step-by-step explanation:

∠ACG = 37°   because it is a complementary angle to 53° (37° + 53° = 90°)

∠ECF = 37° because it is a vertical angle to 37°

4 0
3 years ago
Two trains, Train A and Train B, weigh a total of 493 tons. Train A is heavier than Train B. The difference of their weights is
Vladimir79 [104]

Answer: Area of the floor or ceiling: Multiply the length by the width (10 feet x 12 ... feet (10 feet wide x 8 feet high) and the other is 96 square feet (12 feet x 8 feet). ... divide the total square footage of the floor by 9 (120 square feet / 9 ... To convert an area from square feet into square inches, simply multiply by 144.

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Plz help me with it
quester [9]

Answer:   \bold{\sqrt[4]{2} }

<u>Step-by-step explanation:</u>

\dfrac{1}{2}\sqrt[4]{32} =\dfrac{1}{2}\sqrt[4]{2\cdot 2\cdot 2\cdot 2\cdot 2}=\dfrac{1}{2}\cdot 2\sqrt[4]{2}=\boxed{\sqrt[4]{2} }

4 0
3 years ago
Which was a significant provision of the northwest ordinance?
earnstyle [38]

I think the answer is A.

Hope it helps you!

3 0
3 years ago
How many complex zeros does the polynomial function have?<br> f(x)=−3x^6−2x^4+5x+6
REY [17]

one way would be to factor

I can't factor it so we will have to use Descartes' Rule of Signs which is helpful for finding how many real roots you have


it goes like this:

for a polynomial with real coefients, consider f(x)=-3x^6-2x^4+5x+6.

after arranging the terms in decending order in terms of degree, count how many times the signs of the coeffients change direction and minus 2 from that number until you get to 1 or 0. that will be the number of even roots the function can have

We have (-, -, +, +). the signs changed 1 times, so it has 1 real positive root


to get the negative roots, we evaluate f(-x) and see how many times the root changes

f(-x)=-3x^6-2x^4-5x+6

signs are (-, -, -, +). there was 1 change in sign

so the function has 1 real negative root



a total of 2 real roots


a function of degree n can have at most, n roots


our function is degree 6 so it has 6 roots

if 2 are real, then the others must be complex

6-2=4 so there are 4 complex roots


you can also show that there are only 2 real roots by using a graphing utility to see that there are only 2 real roots

7 0
3 years ago
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