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4 years ago

7th-grade math! Please help ASAP!

Mathematics

3 answers:

Jobisdone [24]4 years ago

8 0

The answer is the first answer

Vikentia [17]4 years ago

8 0

Answer:

Hey there!

First, we can immidietly eliminate the negative answers, because it is impossible to have negative distance, or at least in 7th grade math :) Then, we see that -6/8-(-1/8)=-5/8. The absolute value is always positive, so the last choice is correct.

Let me know if this helps :)

catlover3783842 years ago

0 0

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4 years ago

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Vinvika [58]

Answer:

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Step-by-step explanation:

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4 years ago

If v is one-third of the quantity 3 less than u, how does v change if u is increasing?

kykrilka [37]

Answer:

v increases when u increases

Step-by-step explanation:

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$v = u - \frac{1}{3} * 3$

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3 years ago

Can you tell me how to calculate R for below Matrix ?

scoray [572]

Answer:

The rank of the matrix is 3.

Step-by-step explanation:

Consider the prided information.

$x=\begin{bmatrix}x_1\\ x_2\\ x_3\end{bmatrix}=\begin{bmatrix}9&2&6&5&8\\ 12&8&6&4&10\\ 3&4&0&2&1\end{bmatrix}$

Reduce the matrix in row echelon form as shown:

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$R_3\:\leftarrow \:R_3+\frac{1}{2}\cdot \:R_2\\\begin{bmatrix}12&8&6&4&10\\ 0&-4&\frac{3}{2}&2&\frac{1}{2}\\ 0&0&-\frac{3}{4}&2&-\frac{5}{4}\end{bmatrix}$

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Thus, the rank of the matrix is 3.

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