2 years ago

The plates at the local restaurant have a diameter of 6.3 inches. What is the circumference of the plates?

Mathematics

1 answer:

rusak2 [61]2 years ago

7 0

since diameter is given, use the 2nd equation

$6.3 \times 3.14 = 19.782$

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If the sphere shown above has a radius of 14 units then what is the approximate volume of the sphere

oksano4ka [1.4K]

Answer:

About 11494.04

Step-by-step explanation:

There is no sphere shown above but I can still get you the answer:

The formula for the volume of a sphere is $\frac{4}{3} *$ π*r³

Putting in the radius, we get:

$\frac{4}{3}$ *π*14³=

$\frac{4}{3}$ *π*2744=

$\frac{10976}{3}$ *π=

3658.66*π≈11494.04

8 0

2 years ago

The answer to this word problem usinf discriminant

solniwko [45]

$\bf h=-9.8t^2+45t+1.2\implies 64.5=-9.8t^2+45t+1.2
\\\\\\
0=-9.8t^2+45t-63.3\\\\
-------------------------------$

$\bf \qquad \qquad \qquad \textit{discriminant of a quadratic}
\\\\\\
0=\stackrel{\stackrel{a}{\downarrow }}{-9.8}t^2\stackrel{\stackrel{b}{\downarrow }}{+45}t\stackrel{\stackrel{c}{\downarrow }}{-63.3}
~~~~~~
\stackrel{discriminant}{b^2-4ac}=
\begin{cases}
0&\textit{one solution}\\
positive&\textit{two solutions}\\
negative&\textit{no solution}
\end{cases}
\\\\\\
(45)^2-4(-9.8)(-63.3)\implies -456.36$

the discriminant is a negative value, thus no solution for such quadratic, meaning if we use h=64.5 like we did, there's no "t" seconds at which point the ball hits the batting cage.

8 0

2 years ago

For a class project, a teacher cuts out 15 congruent

maw [93]

Answer:

its 60-15(pie) sq inches

Step-by-step explanation:

5 0

3 years ago

At a grocery store, the price of milk decreased from $2.98 to $2.32. What is the percent of decrease, round to the nearest whole

mr Goodwill [35]

2.98=100%
2.32/2.98 = 0.78
0.78*100=78%
The percent of decrease was 22%.