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Sauron [17]
3 years ago
7

How many terms are in -7k+x2-3

Mathematics
2 answers:
liq [111]3 years ago
8 0

Answer: 2 terms 1:k 2:x

Step-by-step explanation:

Ludmilka [50]3 years ago
3 0

Answer:

i think its is x2-7k-3

Step-by-step explanation:

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Find the cross product of <img src="https://tex.z-dn.net/?f=-%20%5Cfrac%7B3%7D%7B4%7Dv" id="TexFormula1" title="- \frac{3}{4}v"
dsp73
For any scalars c_1,c_2, we have

c_1\mathbf v\times c_2\mathbf w=c_1c_2\mathbf v\times\mathbf w

So

\left(-\dfrac34\mathbf v\right)\times\left(-\dfrac12\mathbf w\right)=\dfrac38\mathbf v\times\mathbf w

We have

\mathbf v\times\mathbf w=\begin{vmatrix}\mathbf i&\mathbf j&\mathbf k\\-2&12&-3\\-7&4&-6\end{vmatrix}
=\begin{vmatrix}12&-3\\4&-6\end{vmatrix}\mathbf i-\begin{vmatrix}-2&-3\\-7&-6\end{vmatrix}\mathbf j+\begin{vmatrix}-2&12\\-7&4\end{vmatrix}\mathbf k
=-60\,\mathbf i-(-9)\,\mathbf j+76\,\mathbf k
=\begin{bmatrix}-60\\9\\76\end{bmatrix}

which makes

\left(-\dfrac34\mathbf v\right)\times\left(-\dfrac12\mathbf w\right)=\dfrac38\begin{bmatrix}-60\\9\\76\end{bmatrix}=\begin{bmatrix}-\frac{45}2\\\\\frac{27}8\\\\\frac{57}2\end{bmatrix}
4 0
3 years ago
Show work for 125 divided by 7.75
Mazyrski [523]
7.75 ➗ 125 = 0.062


Simplify ➡ 31 / 4


31 over 4 ➗ 125


Then, divide ➡31 over 1 by 125


and it should leave you with the answer 0.062
7 0
3 years ago
Are Proportional and non-proportional equations are all linear.
nadezda [96]

Proportional and linear functions are very similar. The only difference is the addition of the “​b​” constant to the linear function. A proportional relationship is just a linear relationship where ​B​ = 0, or where the line passes through the origin (0, 0).

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3 years ago
Mindy buys 8 shirts. Each shirt costs the same price. She pays a total of $225. Write an
inn [45]

Answer:

8c= $225

Step-by-step explanation:

Number of shirts ×cost of each shirt= total cost

Since she bought 8 shirts and the cost of each is c,

8c= $225

To solve for c, divide both sides of the equation by 8:

c= $225 ÷8

c= $28.125

7 0
3 years ago
Read 2 more answers
I need help solving this math equation "Z-5=-8". Is it -3 or 13?
AveGali [126]
The answer is -3. When you add 5 to both sides to isolate the z variable, the 5 is added to the -8. 5 - 8 = -3.
4 0
3 years ago
Read 2 more answers
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