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2 years ago

1/2x + 1/3y = 5 1/4x + y = 10

Mathematics

2 answers:

Pavel [41]2 years ago

8 0

The answer for your question is (x,y)=(4,9)

Sunny_sXe [5.5K]2 years ago

5 0

(x,y) (4,9) is the answer

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Please show me the work!

Papessa [141]

Answer:

9/2π cm/s

Step-by-step explanation:

Volume of the spherical balloon V= 4/3πr³

Rate of change of volume dV/dt = dV/dr * dr/dt

dV/dr = 3(4/3πr²)

dV/dr = 4πr²

dV/dr = 4π(2)²

dV/dr = 16π

If V = 72cm²/s

72 = 16π*dr/dt

dr/dt = 72/16π

dr/dt = 9/2π cm/s

Hence the radius is changing at 9/2π cm/s

6 0

2 years ago

The area of a triangle is 150 square feet. If the base is 15 feet , calculate the height.

Evgen [1.6K]

The height would be 20 feet.

4 0

3 years ago

Read 2 more answers

Calculate the area of triangle ABC with altitude CD, given A (6,0) B(1,5) C (2,0) and D (4,2)

Elina [12.6K]

So hmm check the picture below

the height or altitude is CD
and the base is AB

how long are those? well $\bf \textit{distance between 2 points}\\ \quad \\
\begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
% (a,b)
A&({{ 6}}\quad ,&{{ 0}})\quad 
% (c,d)
B&({{ 1}}\quad ,&{{ 5}})\\\\
C&({{ 2}}\quad ,&{{ 0}})\quad 
% (c,d)
D&({{ 4}}\quad ,&{{ 2}})
\end{array}\qquad 
% distance value
d = \sqrt{({{ x_2}}-{{ x_1}})^2 + ({{ y_2}}-{{ y_1}})^2}
\\\\\\
AB=\sqrt{(1-6)^2+(5-0)^2}\qquad \qquad CD=\sqrt{(4-2)^2+(2-0)^2}$

7 0

3 years ago

Read 2 more answers

Help Me With These #Geometry

cluponka [151]

#4 is b. you use the law of sines to find the missing angles and side lengths.

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3 years ago

2[5x+3]-2=14 what are the solutions

sertanlavr [38]

The answer for this problem is x=1

4 0

3 years ago