3 years ago

A triangle has a width of 0.75 and a height of 4.8 what is the area?

Mathematics

1 answer:

sertanlavr [38]3 years ago

3 0

3.6 because all your doing is subtracting then mulitplying

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The speed of sound in water is 1498 m/s. a sonar signal is sent straight down from a ship at a point just below the water surfac

bulgar [2K]

The 1.8 s is the time for the signal to reach the ocean floor and return to the ship so the time to reach ocean floor = 1.8 / 2 = 0.90 seconds.
depth of ocean = speed * time

= 1498 * 0.90 = 1348.2 m Answer

8 0

3 years ago

24% of students buy there lunch, 190 students bring their lunch from home. How many students are there in total

miv72 [106K]

so we know that 24% of the students buy their lunch at the cafeteria, and 190 students brownbag.

well, 100% - 24% = 76%, so the remainder of the students, the one that is not part of the 24% is 76%, and we know that's 190 of them.

since 190 is 76%, how much is the 24%?

$\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 190&76\\ x&24 \end{array}\implies \cfrac{190}{x}=\cfrac{76}{24}\implies 4560=76x \\\\\\ \cfrac{4560}{76}=x\implies 60=x \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{total amount of students}}{190+60\implies 250}$