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3 years ago

Determine whether the formula describes y as a function of x. Explain your reasoning.

Mathematics

2 answers:

SIZIF [17.4K]3 years ago

8 0

Step-by-step explanation:

$y=-3x^2-7x-6$

Given equation is a quadratic .

For each value of x we will get the value of y (output)

The graph of quadratic is a U shaped parabola.

For each x value there will be output y. the value of x is not repeated.

The graph of quadratic reach minimum at one point and then it goes up.

When we draw vertical line in the graph of U shaped parabola, the line crosses the graph at only one point.

So the y is a function of x

The given formula describes y as a function of x

Dimas [21]3 years ago

6 0

This is a parabola with a maximum value

the graph will pass the vertical line test

so it is a function

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Find the percent cost of the total spent on each:

natta225 [31]

The right answer is 18%,61%,21%

Step-by-step explanation:

Given,

Amount spent on equipment = $46

Amount spent on fees = $152

Transportation = $52

Total spent = Equipment + Fees + Transport

Total spent = 46+152+52 = $250

Percent spent on equipment = $\frac{Amount\ spent\ on\ equipment}{Total\ spent}*100$

Percent spent on equipment = $\frac{46}{250}*100 = 18.4\%$

Rounding off to nearest percent

Percent spent on equipment = 18%

Percent spent on fees = $\frac{Amount\ of\ fees}{Total\ spent}*100$

Percent spent on fees = $\frac{152}{250}*100 = 60.8\%$

Rounding off to nearest whole percent

Percent spent on fees = 61%

Percent spent on transportation = $\frac{Amount\ spent\ on\ transportation}{Total\ spent}*100$

Percent spent on transportation = $\frac{52}{250}*100 = 20.8\%$

Rounding off to nearest whole percent

Percent spent on transportation = 21%

The right answer is 18%,61%,21%

Keywords: percentage, addition

Learn more about percentages at:

#LearnwithBrainly

6 0

3 years ago

Please help solve this

Julli [10]

Answer:

x=283 and the abc is 2929

Step-by-step explanation:

cuz its right

6 0

2 years ago

Someone please.. help me in this please I don’t want to fail it..please

igomit [66]

Answer:

So it wants you to first find the mean (average) of the data set, then find the distance everything is from the mean (average).

Step-by-step explanation:

3+5+9+14+16+18= 65

65 divided by the amount of numbers you put in (6) = 10.83 rounded to the nearest hundreth

So now we know the mean (average) now we need to see how far away each number is from the mean (average).10.83-3 is 7.83. 10.83-5 is 5.83. 10.83-9 is 1.83. 10.83-14 is -14.17, but -14.17 would be a normal 14.17 because it wants the absolute value. 10.3-16 is -5.17 (of course keep it as a positive), and finally 10.83-18 is -7.17 as a positive. Now for the mean absolute value of the data they likely mean from 0, so it would be 10.83.

Hope it helped and wasn't too confusing :)

7 0

3 years ago

I need help someone

pogonyaev

The answer would be A. Oval

7 0

3 years ago

Read 2 more answers

Two combines can harvest 320 acres of wheat in a certain amount of time. Assuming all combines work at the same rate, how many a

hoa [83]

2 combines = 320 acres
320/2 = 160 acres per combine
160 * 6 = 960
Answer: 960 acres

Hope this helps!

4 0

3 years ago