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Natali [406]
3 years ago
9

Can someone help me solve for this ASAP

Mathematics
1 answer:
Olenka [21]3 years ago
6 0

Answer:

Im in college and don't rember this at all.

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A box without a top is made from a rectangular piece of cardboard with dimensions 12 cm by 10 cm, by cutting out square corners
olga nikolaevna [1]

Answer:

  x ≈ 1.8 cm gives the greatest volume

Step-by-step explanation:

After cutting x cm from each corner in each direction, the cardboard can be folded up to make a box that is x cm deep and (12 -2x) by (10 -2x) in length and width. Clearly, values of x are limited to 5 or less, since cutting 5 cm from each side would leave a width of zero. Then the volume is given by ...

  V = x(12 -2x)(10 -2x)

The plot below shows the value of this cubic equation for volume, and identifies the peak as (x, V) ≈ (1.8, 96.8). That is, a cut of 1.8 cm will result in a box of approximate volume 96.8 cm³.

5 0
3 years ago
In a newspaper, it was reported that yearly robberies in Springfield were up 50% to 93 in 2013 from 2012. How many robberies wer
DiKsa [7]

Answer:

There were 62 deaths

Step-by-step explanation:

In this question, we are asked to calculate the number of robberies in 2012.

From the question we can identify that the number of robberies were up 50% to 93. What this means is that the number is simply 150% of the old number.

Now, let’s represent the number of deaths in 2012 by x

Mathematically;

150% of x = 93

150/100 * x = 93

150x = 93 * 100

150x = 9300

x = 9300/150

x= 62

This means there were 62 deaths in the year 2012

8 0
4 years ago
Read 2 more answers
About 3/4 of the students on the track team are girls. About 3/4 of these girls are in grade 8. What fraction of the students on
iren [92.7K]

Answer:

3/4 all the girls

Step-by-step explanation:

you said 3/4 of the team are girls and 3/4 of the girls are in 8th grade! So that's all the girls...All the girls are in 8th grade!

6 0
4 years ago
The amount of money a worker makes varies directly with the hourly rate of pay. Worker A earns $168 for an 8 hour period. Worker
Nataly_w [17]
\bf \qquad \qquad \textit{direct proportional variation}\\\\
\textit{\underline{y} varies directly with \underline{x}}\qquad \qquad  y=kx\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad  variation
\end{array}\\\\
-------------------------------

\bf \textit{money varies directly with hourly rate of pay}\qquad \stackrel{money}{m}=k\stackrel{hour~pay}{h}
\\\\\\
\textit{we also know that }
\begin{cases}
m=168\\
h=8
\end{cases}\implies 168=k8\implies \cfrac{168}{8}=k
\\\\\\
21=k\qquad therefore\qquad \boxed{m=21h}
\\\\\\
\textit{now, when h = 6, what is \underline{m}?}\qquad m=21(6)
3 0
3 years ago
Mira got a 71 and an 83 on her first two tests. If she wants her average to be exactly an 80, what would she need to get on her
melamori03 [73]

Answer:86%

Step-by-step explanation:

71+83+86=240

240/3=80% average

4 0
3 years ago
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