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egoroff_w [7]
3 years ago
5

The amount of food that there will be at the fiesta

Mathematics
1 answer:
olga_2 [115]3 years ago
8 0

I think the independent variable is the number of the students who attend the fiesta and the dependent variable is the amount of food there will be at the fiesta

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What is the domain and range?
MrRissso [65]

Hello from MrBillDoesMath!

Answer:

Domain = { 5. 10. 15. 20}

Range =  -3,-1,1,3} .


Discussion:

The domain is the set of all "x" values, that is  { 5. 10. 15. 20} and the range is (-3,-1,1,3} . The arrows in the diagram show the mapping between the domain and the range. For examples, 5 -> 1 ( "x value 5 is mapped to y value 1"),        10 ->3, 15 ->-3, and 20 -> -2


Thank you,

MrB

7 0
3 years ago
Find x in this porportion 5/2x =25/4
Andrei [34K]

Answer:

x = \frac{2}{5}

Step-by-step explanation:

Given

\frac{5}{2x} = \frac{25}{4} ( cross- multiply )

25 × 2x = 5 × 4

50x = 20 ( divide both sides by 50 )

x = \frac{20}{50} = \frac{2}{5}

6 0
3 years ago
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2x+3 what is x I don’t know
Triss [41]

Answer:

2x + 3 \\  or \: 2x =  - 3 \\ or \: x =   - \frac{3}{2}  \\ therefore \:  \: the \: value \: of \: x \: is \:  -  \frac{3}{2}

<h3> I hoped this helps you ☺️☺️ </h3>

Thank you ☺️☺️

8 0
3 years ago
Which equation best represents a trend line for the scatter plot?
kvasek [131]
Y = (-3/7)x + 4

Looking at the graph, you can see the trend line plotted. And conveniently, there are a couple of points on the trend line that are indicated. Those points being (0,4) and (7,1). The equation of a line in slope intercept form is:y = ax+b

Looking at the points available, the point (0,4) already gives us the y intercept since x is equal to 0. So our equation becomes:
y = ax + 4

Now we need to determine a which is the slope. The slope is the change in y divided by the change in x. So let's do that
(1-4)/(7-0) = -3/7

And now our equation becomes:
y = (-3/7)x + 4

And given formatting issues, the first option available is the correct one.
3 0
3 years ago
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What are the roots of the function y = 4x2 + 2x – 30? To find the roots of the function, set y = 0. The equation is 0 = 4x2 + 2x
nasty-shy [4]
4x² + 2x - 30 = 0
<span>
factor out the GCF:
</span>2(2x² + x - 15) = 0
<span>
factor the trinomial completely:
2x</span>² + x - 15 = 0
2x² + 6x - 5x - 15 = 0
2x(x + 3) - 5(x + 3) = 0
(2x - 5)(x + 3) = 0

<span>use the zero product property and set each factor equal to zero and solve:
2x - 5 = 0     or     x + 3 = 0
2x = 5                   x = -3
x = 2.5

</span><span>The roots of the function are x=-3,  x=2.5</span>
8 0
3 years ago
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