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jeka57 [31]
3 years ago
13

the length of a rectangle is one inch less than three times its width. if the perimeter of the rectangle is 118 inches, find the

dimensions of the rectangle

Mathematics
1 answer:
Aneli [31]3 years ago
4 0
The picture above has the work and answer for you

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An automotive manufacturer wants to know the proportion of new car buyers who prefer foreign cars over domestic. Step 1 of 2: Su
AVprozaik [17]

Answer:

0.249 is the required proportion.

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 822

Number of people who preferred foreign cars over domestic, x = 205

We have to find the proportion of new car buyers who prefer foreign cars.

Formula:

\hat{p} = \dfrac{x}{n}

Putting values, we get,

\hat{p} = \dfrac{205}{822}\\\\\hat{p} = 0.249

Thus, 0.249 is the proportion of the new car buyers who preferred foreign over domestic cars..

3 0
3 years ago
This year, benny is 12 years old, and his mom is 48 years old. In how many years will benny be 50% of his mom's age
Dahasolnce [82]
It will take 12 years for Benny to reach his moms height.

Benny’s mom: 48
Benny: 12

Half of 48 is 24, so Benny will have to turn 24.

24 - 12= 12
7 0
2 years ago
What is the midpoint between 0.13 and 0.14
weqwewe [10]
0.13 + 0.14= 0.27 0.27 ÷ 2 = 0.135 Therefore the midpt. Is 0.135
3 0
3 years ago
The sum of 5.75 and half a number is -5. What is the number? Please help!
barxatty [35]

Answer:

5.75 +  \frac{x}{2}  =  -  5 \\  \frac{x}{2}  =  - 5 - 5.75 \\  \frac{x}{2}  =  - 10.75 \\ x =  - 21.5

4 0
2 years ago
EXAMPLE 5 If F(x, y, z) = 4y2i + (8xy + 4e4z)j + 16ye4zk, find a function f such that ∇f = F. SOLUTION If there is such a functi
Valentin [98]

If there is such a scalar function <em>f</em>, then

\dfrac{\partial f}{\partial x}=4y^2

\dfrac{\partial f}{\partial y}=8xy+4e^{4z}

\dfrac{\partial f}{\partial z}=16ye^{4z}

Integrate both sides of the first equation with respect to <em>x</em> :

f(x,y,z)=4xy^2+g(y,z)

Differentiate both sides with respect to <em>y</em> :

\dfrac{\partial f}{\partial y}=8xy+4e^{4z}=8xy+\dfrac{\partial g}{\partial y}

\implies\dfrac{\partial g}{\partial y}=4e^{4z}

Integrate both sides with respect to <em>y</em> :

g(y,z)=4ye^{4z}+h(z)

Plug this into the equation above with <em>f</em> , then differentiate both sides with respect to <em>z</em> :

f(x,y,z)=4xy^2+4ye^{4z}+h(z)

\dfrac{\partial f}{\partial z}=16ye^{4z}=16ye^{4z}+\dfrac{\mathrm dh}{\mathrm dz}

\implies\dfrac{\mathrm dh}{\mathrm dz}=0

Integrate both sides with respect to <em>z</em> :

h(z)=C

So we end up with

\boxed{f(x,y,z)=4xy^2+4ye^{4z}+C}

7 0
2 years ago
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