3 years ago

Is the table a function?

Mathematics

1 answer:

Dmitry_Shevchenko [17]3 years ago

3 0

Answer:

short answer no

Step-by-step explanation:

there's repeated values for y

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Evaluate the expression 5(8y+3r-5z) if r=3,y=5/8,and z=2

snow_lady [41]

First you plug in the missing values
5(8×5/8+3×3-5×2) = 20

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3 years ago

Expand the following:<br> a) x(x + 2)<br> b) x(2x - 5)<br> c) 2x(3x + 4)<br> d) 6x(x - 2)

TEA [102]

Answer:

solution,

$a. \: x(x + 2) \\ \: \: = x \times x + 2 \times x \\ \: \: = {x}^{2} + 2x$

$b . \: x(2x - 5) \\ \: = x \times 2x - x \times 5 \\ \: \: = 2 {x}^{2} - 5x$

$c. \: 2x(3x + 4) \\ \: = 2x \times 3x + 2x \times 4 \\ \: \: = 6 {x}^{2} + 8x$

$d. \: 6x(x - 2) \\ \: \: = 6x \times x - 6x \times 2 \\ \: \: = 6 {x}^{2} - 12x$

Hope this helps...

Good luck on your assignment..

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3 years ago

given the information in the picture which trigonomic identity can be used to solve for the height of the blue ladder that is le

worty [1.4K]

Answer:

cosine rule - cos = $\frac{a}{h}$

Step-by-step explanation:

Here the ladder is acting as hypotenuse and base as adjacent.

Formula: cosθ = $\frac{adjacent}{hypotenuse}$

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2 years ago

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If the line 2x+3y=6 is perpendicular to the line ax+4y=3, then a=?

olga nikolaevna [1]

Answer:3y=−2x+12

y=(−2x+12)/3

y=-2x/3+4

m=-2/3

perpendicular -1/m=3/2

y=mx+c

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2y=3x+12

Step-by-step explanation:

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I don't know how many boys are in the classroom?

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4 years ago