2 years ago

Joanne had $115 to spend at the mall. She spent 23% of that money on a shirt. How much did Joanne spend on the shirt?

Mathematics

1 answer:

-Dominant- [34]2 years ago

3 0

The answer would be $26.45.
What you do is on a calculator: 115 x 23%
Hope this helps :)

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N/8= 25/40<br> N/20=85/100<br> 2/3=16/n<br> 5/6=25/n

4vir4ik [10]

N/8 = 25/40
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n = 200/40
n = 5

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100n = 85 * 20
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n = 1700/100
n = 17

2/3 = 16/n
2n = 16 * 3
2n = 48
n = 48/2
n = 24

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5n = 25 * 6
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Find the minimum value if f(x) = xe^x over [-2,0]

SashulF [63]

Given function:

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The minimum value of the function can be found by setting the first derivative of the function to zero.

$f^{\prime}(x)=xe^x+e^x$ $\begin{gathered} xe^x+e^x\text{ = 0} \\ e^x(x\text{ + 1) = 0} \end{gathered}$

Solving for x:

$\begin{gathered} x\text{ + 1 = 0} \\ x\text{ = -1} \end{gathered}$ $\begin{gathered} e^x\text{ = 0} \\ \text{Does not exist} \end{gathered}$

Substituting the value of x into the original function:

$\begin{gathered} f(x=1)=-1\times e^{^{-1}}_{} \\ =\text{ -}0.368 \end{gathered}$

Hence, the minimum value in the given range is (-1, -0.368)

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Vsevolod [243]

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Step-by-step explanation:

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vazorg [7]

Answer:

$\huge\boxed{\sf 6.25 \ g}$

Step-by-step explanation:

After every Half life , Half of the mass is left.

After 1st Half life = 100 g / 2 = 50 g

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After 3rd Half life = 25 / 2 = 12.5 g

After 4th Half life = 12.5 / 2 = 6.25 g

$\rule[225]{225}{2}$

Hope this helped!

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2 years ago

7m+9, for m=2.<br> What's the value of this equation

Vinil7 [7]

Answer:

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