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Anuta_ua [19.1K]
3 years ago
10

13. P = a + b + c (perimeter of a triangle);P= 12, a = 3, c = 5​

Mathematics
1 answer:
Kamila [148]3 years ago
5 0

Answer:

if you’re looking for b, then its 4

Step-by-step explanation:

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Factorise each of the following algebraic expressions completely,
LekaFEV [45]

Answer:

see explanation

Step-by-step explanation:

(a)

Given

2k - 6k² + 4k³ ← factor out 2k from each term

= 2k(1 - 3k + 2k²)

To factor the quadratic

Consider the factors of the product of the constant term ( 1) and the coefficient of the k² term (+ 2) which sum to give the coefficient of the k- term (- 3)

The factors are - 1 and - 2

Use these factors to split the k- term

1 - k - 2k + 2k² ( factor the first/second and third/fourth terms )

1(1 - k) - 2k(1 - k) ← factor out (1 - k) from each term

= (1 - k)(1 - 2k)

1 - 3k + 2k² = (1 - k)(1 - 2k) and

2k - 6k² + 4k³ = 2k(1 - k)(1 - 2k)

(b)

Given

2ax - 4ay + 3bx - 6by ( factor the first/second and third/fourth terms )

= 2a(x - 2y) + 3b(x - 2y) ← factor out (x - 2y) from each term

= (x - 2y)(2a + 3b)

8 0
3 years ago
ASAP PLEASE
MatroZZZ [7]

Answer:

I can't really see the whole question, but for a cone the volume formula is πr2h

3

Step-by-step explanation:

8 0
3 years ago
What property is illustrated by 5*6=6*5
lara [203]
The commutative property 
6 0
3 years ago
Read 2 more answers
write a point-slope equation for the line that passes through the point (6,8) and is parallel to the line given by y=-5x+4
VashaNatasha [74]

Answer:

  y -8 = -5(x -6)

Step-by-step explanation:

The point-slope form of the equation for a line is generally written ...

  y -k = m(x -h)

for slope m and point (h, k).

The slope of your parallel line is the same as the slope of the reference line, -5. So your equation is ...

  y -8 = -5(x -6)

3 0
3 years ago
HELP PLEASE ANSWER ASAP 20 POINTS I NEED A CORRECT ANSWER
lina2011 [118]

Answer:

Equivalent factions

Step-by-step explanation:

Steps to simplifying fractions

Find the GCD (or HCF) of numerator and denominator

GCD of 89 and 56 is 1

Divide both the numerator and denominator by the GCD

89 ÷ 1

56 ÷ 1

Reduced fraction:  

89

56

Equivalent fractions: 178/112 267/168 445/280 623/392

More fractions: 178/56 89/112 267/56 89/168 445/56 89/280 623/56 89/392

7 0
3 years ago
Read 2 more answers
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