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2 years ago

9x−4y=−7 7x−12y=39

Mathematics

1 answer:

Nina [5.8K]2 years ago

8 0

what is the question?

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The mapping diagram shows a functional relationship

Gre4nikov [31]

Answer:

$f(4)=\frac{1}{2}$

f(x) = 4 when x is 8

Step-by-step explanation:

Domain is the set of x values that make the function defined. Allowed x values for the function (mapping).

The Range is the set of y values that make the function defined. Allowed y values for the function (mapping).

Whenever we need to find f(a), suppose, then we look for "a" in the domain and see its corresponding value mapping in the range.
Whenever we will be given a value for f(x) = a, suppose, and we have to find "x", we look at the value a in the range and find corresponding x value in the domain.

Firstly, we need f(4), so we look for "4" in domain and see which number it corresponds to in range.

That is $\frac{1}{2}$

Thus,

$f(4)=\frac{1}{2}$

Next,

We want "x" value that gives us a "y" value of 4. We look for "4" in the range and see which value it corresponds to. That is "8". So,

f(8) = 4

8 0

3 years ago

Of the 12 temporary employees in a certain company, 4 will be hired as permanent employees. If 5 of the 12 temporary employees a

Aliun [14]

Answer:

70 groups

Step-by-step explanation:

$5c_{3}*7c_{1}$

$=\frac{5*4*3}{3*2*1} *\frac{7}{1} \\=70$

3 0

2 years ago

The movie club is having a new member sale, so Mindy signs up. The equation -0.4x + 0.05y - 1.25 = 0 relates y, the total cost,

Wewaii [24]

Answer:

Y intercept : ( 0 , 25 )

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

Use the order operations<br><br><br> 27+6(2X2-1) 4x2-5

Andrei [34K]

27+6(2*2-1)4*2-5
2*2=4
27+6(4-1)4*2-5
4-1=3
27+6(3)4*2-5
6*3=18
27+(18)4*2-5
18*4=72
27+(72)*2-5
72*2=144
27+(144)-5
27+144+171
171-5=166

So the answer is 166.

5 0

3 years ago

What are the coordinates of the point on the directed line segment from (-10, -5) to (5, 1) that partitions the segment into a r

Lera25 [3.4K]

if you make a graph and add the coordinates on the graph you can use that find out how it creates a ratio of 1:2

3 0

2 years ago

9x−4y=−7 7x−12y=39 ​

9x−4y=−7 7x−12y=39