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3 years ago

8

Urgent Help math question!

1 answer:

Stella [2.4K]3 years ago

7 0

Answer: Choice A

This is a 3 by 1 matrix, which can be written "3 x 1 matrix".

There are 3 rows and 1 column. The number of rows is listed first.

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5x-4=-6x+4 then x=? please help!

7nadin3 [17]

Answer:

x = 8/11

Step-by-step explanation:

5x - 4 = -6x + 4

Collect like terms

5x + 6x = 4 + 4

11x = 8

x = 8/11

4 0

3 years ago

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Factor the expression 2x4y – 18x2y3 completely.

Annette [7]

Answer:

B. 2x2y(x – 3y)(x + 3y)

Step-by-step explanation:

$2 {x}^{4} y - 18 {x}^{2} {y}^{3} \\ = 2 {x}^{2} y( {x}^{2} - 9 {y}^{2} ) \\ = 2 {x}^{2} y \{ {x}^{2} - {(3y)}^{2} \} \\ \purple {\boxed{ \bold{ = 2 {x}^{2} y(x - 3y)(x + 3y)}}}$

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3 years ago

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Choose the true statement about the graph of x-1 ≤ 2.

frosja888 [35]

Answer:

circle on 1 and all numbers to the right shaded closed circle on 1 and all numbers to the left shaded

Step-by-step explanation:

4 0

3 years ago

A water molecule is made up of 3 atoms. One third of the atoms are oxygen and the remaining atoms are hydrogen. If there are 114

Mashcka [7]

Answer:

228 hydrogen atoms

Step-by-step explanation:

In a water molecule,

1/3rd is oxygen atoms, and

2/3rd (1 - 1/3 = 2/3) is hydrogen atoms

If there are 114 water molecules,

Total number of atoms would be:

3 * 114 = 342 (1 oxygen and 2 hydrogen atoms in 1 water molecule)

Out of these, 2/3rd would be hydrogen atoms, so:

$\frac{2}{3}*342=228$

There would be 228 hydrogen atoms

7 0

3 years ago

HELP ME NEED TO SUBMIT IN 6 MINUTES<br> WILL MARK BRAINLIEST FOR CORRECT ANSWER

agasfer [191]

Answer:c

Step-by-step explanation:

6 0

2 years ago

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