2 years ago

V=1/3Ahmake h the subject of the formula when A=15 and h= 7

Mathematics

1 answer:

ella [17]2 years ago

3 0

Answer:

$v = \frac{1}{3} \times 15 \times 7 \\ 5 \times 7 \\ = 35$

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Alinara [238K]

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3 years ago

PLEASE HELP ME NOW URGENT

timama [110]

ANSWER

$y = 3 \pm \sqrt{21}$

EXPLANATION

The quadratic equation is:

${y}^{2} - 6y - 12 = 0$

Group variable terms:

${y}^{2} - 6y = 12$

Add the square of half, the coefficient of y to both sides.

${y}^{2} - 6y + ( - 3) ^{2} = 12 + ( - 3) ^{2}$

${y}^{2} - 6y + 9= 12 + 9$

The LHS us now a perfect square trinomial:

${(y - 3)}^{2}= 21$

Take square root:

$y - 3 = \pm \sqrt{21}$

$y = 3 \pm \sqrt{21}$

The first choice is correct.

8 0

3 years ago

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V=1/3Ahmake h the subject of the formula when A=15 and h= 7​

V=1/3Ahmake h the subject of the formula when A=15 and h= 7