4 years ago

A rectangular field 50m wide and ym long require 260m of fencing. Find y

Mathematics

1 answer:

marshall27 [118]4 years ago

7 0

Answer:

$\fbox{y=80}$

Step-by-step explanation:

Let me know if you want the full explanation. Have a great weekend! ❤

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5v-u=-2 and –v+9u=18, then the simultaneous solution of the given equation is:

nordsb [41]

Hello :
answer : <span>B. u=2, v=0 becausse :
5(0)-(2) = -2....right
-(2/+9(2) = 18...right</span>

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4 years ago

Write an<br> algebraic expression fh each verbal expression.

PtichkaEL [24]

Answer:

2×y^2

Step-by-step explanation:

i hope it helped you a lot. thankyou

4 0

4 years ago

H=64t-32t^2 find the maximum height attained by the obiect

pshichka [43]

Check the picture below.

so if we just find its vertex, we know how many feet it went up by its y-coordinate.

$\bf h=64t-32t^2\implies h=-32t^2+64t+0 \\\\[-0.35em] ~\dotfill$

$\bf \textit{vertex of a vertical parabola, using coefficients} \\\\ h=\stackrel{\stackrel{a}{\downarrow }}{-32}t^2\stackrel{\stackrel{b}{\downarrow }}{+64}t\stackrel{\stackrel{c}{\downarrow }}{+0} \qquad \qquad \left(-\cfrac{ b}{2 a}~~~~ ,~~~~ c-\cfrac{ b^2}{4 a}\right) \\\\\\ \left(-\cfrac{64}{2(-32)}~~,~~0-\cfrac{64^2}{4(-32)} \right)\implies \left( \stackrel{\stackrel{\textit{how many}}{\textit{seconds}}}{1}~~,~~\stackrel{\stackrel{\textit{how many feet}}{\textit{it went up}}}{32} \right)$