3 years ago

Please help plssssssss

Mathematics

2 answers:

dolphi86 [110]3 years ago

6 0

Answer:

27% i think

Step-by-step explanation:

Vadim26 [7]3 years ago

3 0

Answer:

80% of the original temperature, 2% decrease

Step-by-step explanation:

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A $25,000 purchase decreases 12% in value per year. Determine the values of the purchase after 3 years and after 7 years.

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Celeste needs to create a keyword map that branches out from an image of the solar system. Which image best

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3 years ago

Consider two vectors A and B A=14i and B= -4i+8j

DaniilM [7]

Assuming $\mathbf a,\mathbf b\in\mathbb R^3$ , you have

$\mathbf a\cdot\mathbf b=(14)(-4)+(0)(8)=-56$

so

$((\mathbf a\cdot\mathbf b)\,\mathbf i)\cdot\mathbf a=(-56\,\mathbf i)\cdot(14\,\mathbf i)=(-56)(14)=-784$

Next,

$\mathbf a+\mathbf b=(14\,\mathbf i)+(-4\,\mathbf i+8\,\mathbf j)=10\,\mathbf i+8\,\mathbf j$

Then

$(\mathbf a+\mathbf b)\times\mathbf b=\begin{vmatrix}\mathbf i&\mathbf j&\mathbf k\\10&8&0\\-4&8&0\end{vmatrix}=112\,\mathbf k$

$((\mathbf a+\mathbf b)\times\mathbf b)\times\mathbf k=\begin{vmatrix}\mathbf i&\mathbf j&\mathbf k\\0&0&112\\0&0&1\end{vmatrix}=\mathbf 0$

4 0

3 years ago

Pls helppppppppp :((((((((((((

ohaa [14]

Answer:

The answer is C

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2 years ago

Question and answer in the picture

Luba_88 [7]

Answer:

m =3/4

Step-by-step explanation:

3x-4y = 12

We need to solve for y

Subtract 3x from each side

3x-3x-4y = -3x+12

-4y = -3x+12

Divide by -4

-4y/-4 = -3x/-4 + 12/-4

y = 3/4 x -3

This is in the form y = mx+b where m is the slope and b is the y intercept

The slope is 3/4

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3 years ago

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Please help plssssssss​

Please help plssssssss