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3 years ago

Answer this question right and I will mark you brainliest

Mathematics

1 answer:

Alecsey [184]3 years ago

8 0

Answer:

6 phones

Step-by-step explanation:

because there are 6 dots (representing phones) past the point 14.2 hrs

Hope this helps! :) if you have anymore questions like this id be willing to help you if you want.

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The triangles shown below must be congruent.

leonid [27]

These triangles are congruent by AAS condition hence the statement is true

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3 years ago

Read 2 more answers

Given z=-4-6i<br> Write down the conjugate of z

maks197457 [2]

Answer:

z = -4 + 6i

Step-by-step explanation:

A math conjugate is formed by changing the sign between two terms in a binomial. For instance, the conjugate of x+y is x−y . We can also say that x+y is a conjugate of x−y . In other words, the two binomials are conjugates of each other.

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3 years ago

How does the volume of a cylinder change when it’s diameter is doubled

zavuch27 [327]

Recallin that, the diameter is twice as long as the radius, namely the radius is half the diameter, so, if the diameter is doubled, the radius is also doubled.

$\bf \textit{volume of a cylinder}\\\\
V=\pi r^2 h\quad 
\begin{cases}
r=radius\\
h=height\\
-----\\
r=\stackrel{doubled}{2r}
\end{cases}\implies V=\pi (2r)^2 h
\\\\\\
V=\pi (2^2r^2)h\implies V=\pi 4r^2 h\implies V=4~(\pi r^2 h)$

notice, the new volume is 4 times (πr² h), namely 4 times the original.

8 0

3 years ago

three green socks, four red socks, and five blue socks are in a drawer, and 2 socks are withdrawn at random. Find the probabilit

andreyandreev [35.5K]

Step-by-step explanation:

Number of socks: 3+4+5= 12

Number of red socks= 4

Red socks/other socks= 4/12

Simplify: fraction: 1/3

percentage: 33.33%

decimal: 0.3333

4 0

2 years ago

Write the equation of a Line that is perpendicular to y=5/2x+3 and passes

koban [17]

Answer:

Step-by-step explanation:

Slope of perpendicular lines = -1

y = 5/2x + 3

$m_{1}=\frac{5}{2}\\\\m_{1}*m_{2}=-1\\\\$

$m_{2}=$ -1 ÷ $m_{1}$

= $-1*\frac{2}{5}=\frac{-2}{5}$

(-3 , -5)

Equation of the required line: y - y₁ = m(x -x₁)

y - [5] = $\frac{-2}{5}(x - [-3])\\$

$y+5=\frac{-2}{5}x + 3*\frac{-2}{5}\\\\y+5=\frac{-2}{5}x-\frac{6}{5}\\\\ y =\frac{-2}{5}x-\frac{6}{5}-5\\\\ y = \frac{-2}{5}x-\frac{6}{5}-\frac{5*5}{1*5}\\\\ y = \frac{-2}{5}x-\frac{6}{5}-\frac{25}{5}\\\\\\ y=\frac{-2}{5}x-\frac{31}{5}$

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4 years ago