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OverLord2011 [107]
4 years ago
11

Someone help with these proofs please I'm stuck :/

Mathematics
1 answer:
Ket [755]4 years ago
5 0
7.
1) Given (info from top)
2) <BCA =~ <DCE (vertical angles theorem)
3) triangle BCA =~ triangle DCE (SAS)
4) BA =~ ED (CPCTC)

=~ means congruent

8.
1) Given
2) CA =~ AC (reflexive property of equality)
3) triangle ACB =~ triangle ACD (ASA)
4) BC =~ CD (CPCTC)

Hope this helps!! :)
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A bag with 5 pound of potatoes costs $3.20. How much do 12 pounds of potatoes cost at the same rate?​
Temka [501]

Answer:

$7.68

Step-by-step explanation:

You must find the rate first, so in order to do that you divide the price by the quantity which is

3.20/5

which equals .64 and this number is the cost of potatoes per pound so to find 12 pounds you do

.64 * 12

which equals 7.68

3 0
3 years ago
Read 2 more answers
If the length of an arc is 12 inches and the radius of the circle is 10 inches, what is the measure of the arc?
a_sh-v [17]
I guess what you are asking is what is the measure of the central angle?

arc length = radius * central angle (in radians)

central angle (in radians) = arc length / radius

central angle (in radians) = 12 / 10

central angle (in radians) = 1.2 radians = <span> <span> <span> 68.7549</span></span></span> degrees


3 0
3 years ago
Write an equation of the line with a slope of -4 and a y-intercept of 2.
Verizon [17]

Answer:

Step-by-step explanation:

-4 x y-= 2

8 0
3 years ago
Hamburger heaven is having a lunch special where customers buy one 3/4 pounds cheese burger and get one free if they set aside 1
Yuri [45]

Answer:

49

Step-by-step explanation:

49 hamburguers (of 3/4 pound)

Step-by-step explanation:

3/4 pound is equal to 0.75 pound

37 1/3 pounds of meat is equal to

37 + 1/3 pound =  37.3333 pounds

To find how much hamburguers can be made, we need to divide

37.3333 pounds/ 0.75 pounds

37.3333 pounds/ 0.75 pounds = 49.777777

(We need to round to the lowest number)

This means that 49 hamburguers could be made

Plz mark brainliest

5 0
3 years ago
Factor the following quadratic equation; <br><img src="https://tex.z-dn.net/?f=12%20%7Bx%7D%5E%7B2%7D%20%20%2B%2022x%20-%2014" i
Bogdan [553]

Answer:

2(3x + 7)(2x - 1)

Step-by-step explanation:

You can see it a little easier if you take out a common factor of 2

2(6x^2 + 11x - 7)

The 6 leaves you with a lot of factors, the 7 does not. It only has 2 factors.

Let 6 factor into 2 and 3 and the 7 into 7 and 1

2(3x - 1 )(2x + 7)

Now remove the brackets.

2(6x^2 + 21x - 2x - 7) This obviously does not work but we'll combine like terms anyway.

2(6x^2 + 19x - 7)

So we'll try it again

2(3x + 7)(2x - 1)

2(6x^2 + 14x - 3x - 7)    Looks like we have it.

2(6x^2 + 11x - 7)

So the right factors are

2(3x + 7)(2x - 1)

5 0
4 years ago
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