3 years ago

A wooden plank of length x is cut into 8 sections such that each section is at most

1 answer:

5 0

Well you take the length of each section, which is "blank" rn, and multiply into 8? I don't know what will the meaning of "at most" be effective here, but if it's normal calculations, x = "blank" x 8

You might be interested in

There were 20 boys and 26 girls in a chess club last year. This year the number of boys increased by 30% but the number of girls

Readme [11.4K]

Step-by-step explanation:

Boys

$20 + (20 \div 100)30 = \\ = 20 + 0.2 \times 30 = \\ = 20 + 6 = \\26$

Girls

$26 - (26 \div 100)15 = \\ = 26 - 0.26 \times 15 = \\ = 26 - 3.9 = \\ = 22$

Total last year 46

Total this year 48

Increase

5 0

2 years ago

Daniel dives into a swimming pool. The height of his head is represented by the function h(t) = -8t2 - 28t + 60, where t is the

8_murik_8 [283]

So, h(t) is how far is Daniel's head from the surface of the water, namely the surface itself is when the height is nill, so his head is at the surface and the height of it is just 0, thus h(t) = 0. Namely, what is "t" when h(t) is 0?

$\bf h(t)=-8t^2-28t+60\implies \stackrel{h(t)}{0}=-8t^2-28t+60
\\\\\\
0=-2t^2-7t+15\implies 2t^2+7t-15=0\implies (2t+3)(t-5)=0
\\\\\\
\begin{cases}
2t+3=0\implies 2t=-3\implies &t=-\frac{3}{2}\\\\
t-5=0\implies &\boxed{t=5}
\end{cases}$

clearly the seconds cannot be a negative unit, so is not -3/2.

6 0

2 years ago

Which function is the inverse of f(x) equals negative 5X -4

nikitadnepr [17]

Answer:

f inverse x = -x+4/5

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Select the three ratios that are equivalent to<br> 2 adults/5 children

IceJOKER [234]