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11111nata11111 [884]
3 years ago
9

A) Complete the table of values for y = x^2 - 4x​

Mathematics
1 answer:
Elan Coil [88]3 years ago
7 0

Step-by-step explanation:

The given function is

y =  {x}^{2}  - 4x

To complete table of values for this function, we need to substitute x-values and solve for corresponding y-values.

When x=-1,

y =  ( { - 1)}^{2}  -  4( - 1)

y = 1  + 4 = 5

When x=0,

y =  ( { 0)}^{2}  -  4( 0) = 0

When x=1,

y =  ( { 1)}^{2}  -  4( 1) = 1 - 4 =  - 3

The table is shown in the attachment.

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Salma received a $90 gift card for a coffee store. She used it in buying some coffee that cost $8.33 per pound. After buying the
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Answer:

4 Pounds.

Step-by-step explanation:

90 - 56.68 = 33.32

33.32 / 8.33 = 4

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3 years ago
5. Tyra has 12 cups of sugar. If r is the amount of sugar needed for
MrMuchimi

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it depends how much oatmeal she has -.-

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3 years ago
Laurie earns $6.50 per hour at the fruit
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Answer- 2 hours

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3 years ago
Can someone please help me with these math problems ASAP?!<br> Thanks in advance! ;)
Mamont248 [21]

Answer:

11) Here given Function,

f(x) = \sqrt{2x-11}

And, g(x) = -|0.1|x+5

For f(x) = g(x)

\sqrt{2x-11}=-|0.1|x+5

2x-11=(-|0.1|x+5)^2

2x-11=0.01x^2 - 10|0.1|x+25

2x=0.01x^2 - 10|0.1|x+25+11

2x=0.01x^2 - 10|0.1|x+36

0.01x^2 - 10|0.1|x - 2x+36=0

When we solve this equation,

We found,

 x = 12.5227 ≈ 12.53

Thus, the required solution is, x = 12.53

12) Here the height of rocket A in x second,

f(x) = -16x^2+74x+9

And, The height gain by the rocket B in x seconds,

g(x) = -16x^2+82x

If at x seconds both A and B gain the same height,

That is, f(x) = g(x)

⇒ -16x^2+74x+9= -16x^2+82x

⇒74x + 9 = 82x

⇒ 82x - 74x = 9

⇒ 8x = 9

⇒ x = 1.125 ≈ 1.13

Thus, the required solution is x = 1.13 seconds (approx)


4 0
3 years ago
Given the two points what is the slope of the line?<br> (4,2) (10.4)
zlopas [31]

m = \frac{y2-y1}{x2-x1}\\ m=\frac{4-2}{10-4} \\m = \frac{2}{6} \\\\m=\frac{1}{3}

Therefore, the slope of the line is 1/3. In case if you want the equation too.

y=mx+b\\y=\frac{1}{3}x+b\\ 2=\frac{1}{3}(4)+b\\ 2=\frac{4}{3}+b\\ b=-\frac{4}{3}+2\\ b=-\frac{4}{3} +\frac{6}{3}\\ b=\frac{2}{3}

Therefore, the equation is y=1/3x+2/3

6 0
3 years ago
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