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3 years ago

Solve the attached question.No spam allowed!

Mathematics

1 answer:

ohaa [14]3 years ago

3 0

Answer:

$= 100$

Step-by-step explanation:

TSA of brick → 2(L×b+b×h+h×l)

$= 2(22.5× 10 + 10 \times 7.5 +7.5 \times 22.5)$

$= 2 (225 +75 + 168.75) cm²$

$=2 ( 468.75) cm ²$

$= 937.5cm²$

$= \frac{937.5 {cm}^{2} }{100 \times 100}$ $=0.09375 m²$

Therefore, Required number of Bricks-

$= \frac{9.375 {cm}^{2} \times 100}{0.09375 \: {cm}^{2} }$

$= 100$

Hence,The required Number of Bricks = 100 respectively.

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Can you help me figure out the slope of this line?<br> please and thx<br> ASAP.

KonstantinChe [14]

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3 years ago

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Aleonysh [2.5K]

Answer:

A. $y=3x-10$

C. $y+6=3(x-15)$

Step-by-step explanation:

Given:

The given line is $6x+18y=5$

Express this in slope-intercept form $y=mx+b$ , where m is the slope and b is the y-intercept.

$6x+18y=5\\18y=-6x+5\\y=-\frac{6}{18}x+\frac{5}{18}\\y=-\frac{1}{3}x+\frac{5}{18}$

Therefore, the slope of the line is $m=-\frac{1}{3}$ .

Now, for perpendicular lines, the product of their slopes is equal to -1.

Let us find the slopes of each lines.

Option A:

$y=3x-10$

On comparing with the slope-intercept form, we get slope as $m_{A}=3$ .

Now, $m\times m_{A}=-\frac{1}{3}\times 3=-1$ . So, option A is perpendicular to the given line.

Option B:

For lines of the form $x=a$ , where, a is a constant, the slope is undefined. So, option B is incorrect.

Option C:

On comparing with the slope-point form, we get slope as $m_{C}=3$ .

Now, $m\times m_{C}=-\frac{1}{3}\times 3=-1$ . So, option C is perpendicular to the given line.

Option D:

$3x+9y=8\\9y=-3x+8\\y=-\frac{3}{9}x+\frac{8}{9}\\y=-\frac{1}{3}x+\frac{8}{9}$

On comparing with the slope-intercept form, we get slope as $m_{D}=-\frac{1}{3}$ .

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3 years ago

Find the missing value of X and Y.

Aneli [31]

Answer:

x = y = $\sqrt{45}$

Step-by-step explanation:

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3 years ago

X is an even 3-digit integer ending to zero. Which of the following is an

insens350 [35]

Answer: Don't know sorry

Step-by-step explanation:

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2 years ago

Read 2 more answers

Directed line segment DE has endpoints D(-4,-2) and E(1,8). Point F divides DE such that DF:FE is 3:2What are the coordinates of

VMariaS [17]

The Solution.

The given points are

$D(-4,-2)\text{ and E(1,8)}$

The formula is

$\frac{mx_2+nx_1}{m+n}_{},\frac{my_2+ny_1}{m+n}$

In this case,

$m=3,n=2$

Therefore,

$\begin{gathered} (\frac{mx_2+nx_1}{m+n}_{},\frac{my_2+ny_1}{m+n}) \\ =(\frac{3(1)+_{}2(-4)_{}}{3+2}_{},\frac{3(8)_{}+2(-2)_{}}{3+2}) \\ \end{gathered}$ $=(\frac{3-8}{5},\frac{24-4}{5})=(-\frac{5}{5},\frac{20}{5})$ $=(-1,4)$

Hence, the correct answer is (-1, 4) (option 3)

3 0

1 year ago

Solve the attached question.No spam allowed!​

Solve the attached question.No spam allowed!