3. 432 is divisible by (1 point) O only 2. O only 3. O2 and 3.

Mathematics

2 answers:

Taya2010 [7]2 years ago

5 0

Answer:

not sure

Step-by-step explanation:

0 only 2

svetoff [14.1K]2 years ago

5 0

Answer:

Only two and Three!

Step-by-step explanation:

423 is divisible by the prime number two!

423 divided by 2 is 216

432 is also divisible by three!!

432 divided by three is 141

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3. Solve the equation using square roots. If the equation has no real solution, write

noname [10]

3) x² - 121 = 0

x² = 121

x' = +√121

x' = 11

_______________

x'' = - √121

x'' = -11

Solution ⇒ S{-11 ; 11 } or (x-11)(x+11)

4) 4x² + 144 = 0

4x² = -144

x² = -144 / 4

x² = -36

x = √-36

No solution ⇒ S = ∅

5) z²+10z+21 = 0

Δ = 10² - 4(1)(21)

Δ = 100 - 84

Δ = 16

x' = (-10+4) / 2 = -6/2 = -3

x'' = (-10-4) / 2 = -14/2 = -7

Solution ⇒ S{ -7 ; -3} or (x+3)(x+7)

4 0

3 years ago

What is the value of x in the solution

krok68 [10]

Answer:

$x =\dfrac 47$