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soldi70 [24.7K]
3 years ago
11

Which equation is equivalent to 2/3(3x+9)=21​

Mathematics
2 answers:
ivann1987 [24]3 years ago
7 0

Answer:

2x+6=21 is equal to your equation

Vladimir [108]3 years ago
3 0

Answer:

Z Nansen

Step-by-step explanation:

S sba

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Q1. Find y, if √12 - √147 + y√3 = 0
o-na [289]

Answer:

Q1. y = 5 Q2.  (√2 - √3)/2

Step-by-step explanation:

Q1

√12 - √147 + y√3 = 0

Taking -√147 and √12 to the right hand side, we have

y√3 = √147 - √12

y√3 = √(3 × 49) - √(3 × 4)

y√3 = √3 × √49 - √3 × √4

y√3 = √3 × 7 - √3 × 2

y√3 = 7√3 - 2√3

y√3 = 5√3

Dividing both sides by √3, we have

y√3/√3 = 5√3/√3

y = 5

Q2

Sin45° - Cos30°

Since Sin45° = √2/2 and Cos 30° = √3/2

Substituting these values into the equation, we have

Sin45° - Cos30° = √2/2 - √3/2

Taking L.C.M of both factors, we have

Sin45° - Cos30° = (√2 - √3)/2

6 0
3 years ago
PLZ HELP MEEEE!!
arsen [322]

Answer:

42x+6y>24

Step-by-step explanation: im sorry if i am wrong but i belive that is correct

6 0
2 years ago
Perrys Bikes rents bikes for $17 plus $6 per hour. john paid $59 to rent a bike. For how many hours did he rent the bike?
matrenka [14]
7 hours

Let x represent hours rented
59=17+6x
42=6x
x=7
4 0
3 years ago
PLEASE HELP!!!!!!!!!!
Vaselesa [24]

Answer:

b. these codes are equal volume

8 0
2 years ago
Solve for x help don't know how to do this
Charra [1.4K]
Both triangle are isosceles, which means their base angles are congruent.

54 + 2y = 180
2y = 126
y = 63 

The measure of the base angles of the triangle on the left is 63 degrees.

180 - 63 = 117

117 + 2x = 180
2x = 63
x = 31.5

Answer:
x = 31.5

Hope this helps.
5 0
3 years ago
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