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3 years ago

Please help will give Brain

Mathematics

1 answer:

fgiga [73]3 years ago

6 0

That question is rly badly organized but i think it’s 70

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Re-write the equation in slope-intercept form: 5x + 4y = 20

Mazyrski [523]

Answer:

y=5-5/4x

Step-by-step explanation:

slope-intercept form: y=mx+b (m= slope, b= y-intercept)

5x + 4y = 20

4y=20-5x

simplify

y=5-5/4x

3 0

3 years ago

Please Helppp pleaseeeeeeee pleaseeee

Natalka [10]

Answer:

Step-by-step explanation:

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8 0

3 years ago

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Slope of (-7,18), (-15,5)

Ksju [112]

Answer:

The slope is

$\frac{13}{ - 8}$

Step-by-step explanation:

$\frac{18 - 5}{ - 15 - ( - 7)} \\ \frac{13}{ - 15 + 7} \\ = \frac{13}{ - 8}$

4 0

3 years ago

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A homogeneous rectangular lamina has constant area density ρ. Find the moment of inertia of the lamina about one corner

frozen [14]

Answer:

$I_{corner} =\frac{\rho _{ab}}{3}(a^2+b^2)$

Step-by-step explanation:

By applying the concept of calculus;

the moment of inertia of the lamina about one corner $I_{corner}$ is:

$I_{corner} = \int\limits \int\limits_R (x^2+y^2) \rho d A \\ \\ I_{corner} = \int\limits^a_0\int\limits^b_0 \rho(x^2+y^2) dy dx$

where :

(a and b are the length and the breath of the rectangle respectively )

$I_{corner} = \rho \int\limits^a_0 {x^2y}+ \frac{y^3}{3} |^ {^ b}_{_0} \, dx$

$I_{corner} = \rho \int\limits^a_0 (bx^2 + \frac{b^3}{3})dx$

$I_{corner} = \rho [\frac{bx^3}{3}+ \frac{b^3x}{3}]^ {^ a} _{_0}$

$I_{corner} = \rho [\frac{a^3b}{3}+ \frac{ab^3}{3}]$

$I_{corner} =\frac{\rho _{ab}}{3}(a^2+b^2)$

Thus; the moment of inertia of the lamina about one corner is $I_{corner} =\frac{\rho _{ab}}{3}(a^2+b^2)$

7 0

3 years ago

8. A bag of marbles contains only purple and yellow marbles. The bag has three times as many

Yuliya22 [10]

Answer:

Step-by-step explaA bag of marbles contains only purple and yellow marbles. The bag has three times as many yellow marbles as purple. The bag contains 164 total marbles. Write an equation or system of equations to find out how many of each color of marble is in the bag. Define your variable(s) and expressions. Show how you checked your answer.

2nation:

7 0

3 years ago