Can someone help me here pretty pls

Mathematics

1 answer:

IRINA_888 [86]3 years ago

7 0

5 minutes would be 290 and 8 minutes would be 464.

You might be interested in

An arch in the shape of a parabola has a height of 50 feet at the center and a span of 120 feet across. Find the height of the a

Feliz [49]

Check the picture below.

so, we know the parabola has a vertex at (0 , 50), we also know it passes through (60 , 0), so then

$~~~~~~\textit{vertical parabola vertex form} \\\\ y=a(x- h)^2+ k\qquad \begin{cases} \stackrel{vertex}{(h,k)}\\\\ \stackrel{"a"~is~negative}{op ens~\cap}\qquad \stackrel{"a"~is~positive}{op ens~\cup} \end{cases} \\\\[-0.35em] \rule{34em}{0.25pt}$

$\stackrel{vertex}{(0~~,~~50)}\implies y=a(x-0)^2+50\implies y = ax^2+50 \\\\\\ \begin{cases} x =60\\ y = 0 \end{cases}\implies 0=a6^2+50\implies -50=3600a\implies -\cfrac{50}{3600}=a \\\\\\ -\cfrac{1}{72}=a~\hfill therefore~\hfill \boxed{y=-\cfrac{1}{72}x^2+50}$

so then, what's "y" when x = 25?

$y=-\cfrac{1}{72}25^2+50\implies y = -\cfrac{625}{72}+50\implies y = \cfrac{2975}{72}\implies y\approx 41.32$

8 0

3 years ago

A B C share the rent in a ratio of 4:3:2 The rent is £216 how much dose A pay

ivanzaharov [21]

4+3+2=9

216/9=24

(A)- 4 x 24= £96

Hope this helps!☺

4 0

3 years ago

The distributive property combines (blank) and (blank) to make multiplying whole numbers simpler.

emmasim [6.3K]

I am not too sure whether there were options, but one way to approach this is to fill it with "multiplication" and "addition" - the distributive property combines addition and multiplication to make multiplying whole numbers simpler. The gain is that you don't have to make one difficult multiplication, but a couple of simpler ones and then you can add them up.

4 0

4 years ago

Can someone pease help

Hatshy [7]

ANSWER

$f(1) = - 34$