3 years ago

Why is graphing not always the best option for solving systems?

Mathematics

2 answers:

katrin2010 [14]3 years ago

8 0

Graphing is only presented in 2D on a flat surface

xxTIMURxx [149]3 years ago

7 0

Because sometimes when graphing, you can miss parts of a fraction, such as if you had to graph (2.76,-8.65). You would be unsure as to how accurate someone could “guess” the value.

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Andrea has four times the number of marbles that Jennifer has. If x equals the number of marbles that Jennifer has, which expres

sasho [114]

Answer:

Number of marbles Andrea has can be expressed as = $4x$ marbles

Step-by-step explanation:

Given:

Number of marbles Jennifer has = $x$ marbles

Andrea has 4 times the number of marbles that Jennifer has.

∴ Number of marbles Andrea has can be expressed as = $4\times x=4x$ marbles

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4 years ago

If y = 4 when x = -6, find y when x = 15.

SVETLANKA909090 [29]

Y=5. Difference between -6 and 4 is ten so 15-10 =5

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3 years ago

What is the exact value of tan (StartFraction 5 pi Over 8 EndFraction)

melisa1 [442]

9514 1404 393

Answer:

(d) -√((2+√2)/(2-√2))

Step-by-step explanation:

5π/8 is a 2nd-quadrant angle whose reference angle is greater than π/4. This means the tangent is negative with a magnitude greater than 1. The only reasonable choice is ...

$\displaystyle -\sqrt{\frac{2+\sqrt{2}}{2-\sqrt{2}}}$