Question

answe fast pls iw I nmark​

Answer 1

Answer:

For equal roots D = 0

[2(k − 12)]²4.(k − 12).2 = 0

4(k-12)² - 4(k - 12) × 2 = 0

k² - 24k + 144 - 2k + 24 = 0

or k² 26k + 168 = 0

k² - 14k - 12k + 1680

k(k − 14) – 12(k − 14) = 0

(k-12) (k-14) = 0

... k = 12 or 14

.. k = 14 (ask # 12given in question)A cylindrical piece of glassware with coarse markings. Used to hold liquids, but should not be used for measurements of volume where precision is needed.

Beaker

Bunsen burner

A metal tube with two valves and an inlet for natural gas. The valve on the base controls the flow rate of gas; the valve on the side controls the amount of oxygen in the gas mixture. Tutorial