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puteri [66]
3 years ago
15

What is true about equivalent fraction

Mathematics
1 answer:
lisabon 2012 [21]3 years ago
5 0
Numerators will be equal after the multiplication.
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Simplify <br>(sinA +cosA) (sinA-cosA) ​
kvv77 [185]

Answer:

-cos(2A)

Step-by-step explanation:

We know that (a+b) (a-b) = a^2-b^2

So it means we can simplify to sin^2(A)-cos^2(A) and we know cos^2(A) - sin^2(A) = cos(2A) but we will just multiply by -1 and we get - cos(2A)

5 0
3 years ago
Factor 2m2 - m - 21​
maks197457 [2]

Answer:

<h2>(2m-7)(m+3)</h2>

Step-by-step explanation:

hello:

2m² - m - 21​

∆ =b²-4ac    a=2  and  b= -1   and  c= -21

∆ =(-1)²-4(2)(-21)=169 = 13²

m1 = (-b+√∆)/2a = (1+13)4 = 14/4 = 7/2

m2 = (-b-√∆)/2a = (1-13)4 = -12/4 = -3

the factorization is : a(m-m1)(m-m2)

2(m-7/2)(m+3) = (2m-7)(m+3)

7 0
4 years ago
Coffee is priced at 6.63
goldfiish [28.3K]

Answer:

ok, anddddd???

Step-by-step explanation:

3 0
2 years ago
From the figure below, identify all pairs of alternate interior and alternate exterior angles
spin [16.1K]

A.

alternate exterior

exterior means outside

like a front entrance to a home

1. o & t

2. n & u

B.

alternate interior

interior means inside

like as if its inside a house

1. p & s

2. q & r

( p & s ) AND ( q & r ) both look like the letter Z

https://brainly.in/question/44754772

5 0
2 years ago
Scientific Notation<br> 5x10 to the forth power divided by 25 x 10 to the 2nd power.
Radda [10]

Answer:

10 to the 6th power over 5

Step-by-step explanation:

8 0
3 years ago
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