Answer:
84
Step-by-step explanation:
Given a quadratic equation in standard form, ax² + bx + c = 0 : a ≠ 0
Then the discriminant is Δ = b² - 4ac
2k² = 10k - 2 ( subtract 10k - 2 from both sides )
2k² - 10k + 2 = 0 ← in standard form
with a = 2, b = - 10 and c = 2, thus
b² - 4ac = (- 10)² - (4 × 2 × 2) = 100 - 16 = 84
(2 - 7z)(2 + 7z)
= (2)^2 - (7z)^2
= 4 - 49z^2
56 I think :) tell me if it is
She spent $9.
$16+$6 is $22, so the total $31 minus $22 leaves us with the $9 she spent for the taxi.
Answer:
True
(1) You can prove two triangles are similar using AA similarity.
(2)If side length of similar figure have ration
then the ratio of surface areas will be:
(3)If side length of similar figure have ratio of
then perimeter will have ratio:
.
False:
(1)If side length of similar figure have ration
then the ratio of Volumes will be:
(2)If side length of similar figure have ration
then the ratio of surface area will be: