Find the sum of (2x-5y) and (x+y)

Mathematics

1 answer:

Alja [10]2 years ago

6 0

Answer: 2x-5y+x+y

3x-4y

Step-by-step explanation: combinded like terms

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High expression is equivalent to ^4 square root x^10

Talja [164]

In order to find which expression is equivalent to $\sqrt[4]{x^{10}},$ simplify all given expressions:

$\sqrt[4]{x^{10}}=x^{\frac{10}{4}}=x^{\frac{5}{2}}=x^{2.5}.$

$x^2(\sqrt[4]{x^2})=x^2\cdot x^{\frac{2}{4}}=x^2\cdot x^{\frac{1}{2}}=x^2\cdot x^{0.5}=x^{2.5}.$

$x^{2.2}.$

$x^3(\sqrt[4]{x} )=x^3\cdot x^{\frac{1}{4}}=x^3\cdot x^{0.25}=x^{3.25}.$

$x^5.$

Therefore,

Answer: correct choice is A

7 0

2 years ago

Can somebody please help me with question b please?

snow_tiger [21]

$\bf A=
\begin{bmatrix}
-2&0\\1&3
\end{bmatrix}\qquad B=
\begin{bmatrix}
1&0&3\\-1&3&0
\end{bmatrix}\\\\
-----------------------------\\\\
AB=
\begin{bmatrix}
(-2\cdot 1)+(0\cdot -1)&(-2\cdot 0)+(0\cdot 3)&(-2\cdot 3)+(0\cdot 0)\\\\
(1\cdot 1)+(3\cdot -1)&(1\cdot 0)+(3\cdot 3)&(1\cdot 3)+(3\cdot 0)
\end{bmatrix}$

as you notice above, is the first-row components from A, multiplying all the columns subsequently on B, and you add the products of that row, that gives you one component on the AB matrix

in the one above, we end up with a 2x3 AB matrix

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2 years ago

Write in expanded form 72.864

Sergeeva-Olga [200]

Answer:

70 + 5 + 8/10 + 6/100 + 4/1000

7*10 + 5*1 + 8*1/10 + 6*1/100 + 4*1/1000

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