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denis-greek [22]
4 years ago
6

Proof. Give: <1 and <2 are complementary, angle 1 is congruent to angle 3 and angle 2 is congruent to angle 4. Prove: angl

es 3 and 4 are complementary
Mathematics
1 answer:
dangina [55]4 years ago
5 0
<1 and <2 are complementary : given
<1+<2=90 : definition of complementary
<1 congruent <3 : given
<2 congruent <4 : given
<3 congruent <4 : transitive property
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Which choice shows the numbers correctly ordered?
zvonat [6]
The correct answer is B
3 0
3 years ago
What is the recursive rule for this geometric sequence? 1/2, -2, 8, -32
Gnesinka [82]

Answer:

see explanation

Step-by-step explanation:

A recursive rule allows us to find the term in a sequence from the previous term.

From the given geometric sequence find r the common ratio

r = \frac{-2}{\frac{1}{2} } = \frac{8}{-2} = - 4

Hence recursive rule is

a_{n+1} = - 4a_{n} ( a₁ = \frac{1}{2} )

4 0
3 years ago
How do you factor x2-49 ?
expeople1 [14]
--------------------------------------------------
Question
---------------------------------------------------
x² - 49

--------------------------------------------------
Form into 2 perfect squares
---------------------------------------------------
x² - 7²

--------------------------------------------------
Formula
---------------------------------------------------
a² - b² = (a + b) (a - b)

--------------------------------------------------
Apply the formula
---------------------------------------------------
x² - 7² = (x + 7)(x - 7)

--------------------------------------------------
Answer: (x + 7)(x - 7)
---------------------------------------------------
4 0
3 years ago
Read 2 more answers
Which of the equations are true identities? a. (3x-2y)(2y-3x)=9x^2-4y^2 b. (2k+5r)(2k-5r)=4k^2-25r^2
krok68 [10]

Answer:

b.(2k+5r)(2k-5r)

Step-by-step explanation:

We have to find the equation which are true identity.

a.(3-2y)(2y-3x)

(3x-2y)(2y-3x)=3x(2y-3x)-2y(2y-3x)

=6xy-9x^2-4y^2+6xy

(3-2y)(2y-3x)\neq 9x^2-4y^2

b.(2k+5r)(2k-5r)

(2k)^2-(5r)^2

Using identity

(a+b)(a-b)=a^2-b^2

4k^2-25r^2

It is true.

Hence, option b is true.

7 0
3 years ago
Increase 270 by 20%​
Nana76 [90]

Answer:

first find 20 percent of 270

270 times 20 divided by 100

5400 divided by 100

54

270 plus 54

324 is your final answer

-hope this helps!

5 0
3 years ago
Read 2 more answers
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