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4 years ago

The aquarium display 322 fish . the number of seahorses on display is 85 less than the number of fish

Mathematics

1 answer:

Ugo [173]4 years ago

8 0

There is 237 seahorses.

If there's 322 fish and 85 less seahorses, do 322-85=237.

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3 years ago

Create a real-world situational problem to represent the given equation or inequality.

Gala2k [10]

Answer:

wheres the rest of it

Step-by-step explanation:

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3 years ago

What is (567x237)x(467x939)<br> i will mark brainliest

8_murik_8 [283]

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58926938427

Step-by-step explanation:

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3 years ago

Read 2 more answers

A rectangular piece of paper is 44 cm long and 20 cm wide. A cylinder is forms by rolling the paper along its length. Find its v

Musya8 [376]

Answer:

3081.24 cm³ (nearest hundredth)

Step-by-step explanation:

<u>Formulas</u>

$\textsf{Circumference of a circle}=\sf 2 \pi r\quad\textsf{(where r is the radius)}$

$\textsf{Volume of a cylinder}=\sf \pi r^2 h \quad\textsf{(where r is the radius and h is the height)}$

If a rectangular piece of paper is rolled along its length to form a cylinder:

circumference = 44 cm
height = 20 cm

To calculate the volume of the formed cylinder, determine the radius by using the circumference formula:

$\implies \sf 2 \pi r = 44$

$\implies \sf r = \dfrac{44}{2 \pi}$

$\implies \sf r =\dfrac{22}{\pi}$

Substitute the round radius into the formula for Volume and solve for V:

$\implies \sf V=\pi \left(\dfrac{22}{\pi}\right)^2(20)$

$\implies \sf V=\pi \left(\dfrac{484}{\pi^2}\right)(20)$

$\implies \sf V=\left(\dfrac{484}{\pi}\right)(20)$

$\implies \sf V=\dfrac{9680}{\pi}$

$\implies \sf V=3081.239698...cm^3$

Therefore, the volume of the cylinder is 3081.24 cm³ (nearest hundredth).

8 0

2 years ago

Solve the linear eqvations by matrix inversion method 2x -2y = 4 , 3x + 2y = 6

Alex73 [517]

Answer:

The answer is below

Step-by-step explanation:

A linear graph has an equation of the form:

y = mx + b,

where y and x are variables, m is the slope (rate of change) of the graph and b is the y intercept (value of y when x is 0).

Given that:

2x -2y = 4 , 3x + 2y = 6

The matrix form of the equation is:

AX = B

$A=\left[\begin{array}{cc}2&-2\\3&2\end{array}\right] ,X=\left[\begin{array}{c}x\\y\end{array}\right] ,B=\left[\begin{array}{c}4\\6\end{array}\right] \\\\Therefore:\\\\\left[\begin{array}{cc}2&-2\\3&2\end{array}\right] \left[\begin{array}{c}x\\y\end{array}\right] =\left[\begin{array}{c}4\\6\end{array}\right] \\\\\left[\begin{array}{c}x\\y\end{array}\right] =\left[\begin{array}{cc}2&-2\\3&2\end{array}\right]^{-1} \left[\begin{array}{c}4\\6\end{array}\right] \\\\$

$\left[\begin{array}{c}x\\y\end{array}\right] =\left[\begin{array}{cc}0.2&0.2\\-0.3&0.2\end{array}\right] \left[\begin{array}{c}4\\6\end{array}\right] \\\\\left[\begin{array}{c}x\\y\end{array}\right] =\left[\begin{array}{c}2\\0\end{array}\right]$

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3 years ago