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tatuchka [14]
3 years ago
11

Select all ordered pairs that correspond to input-output pairs of the function y = −7x + 6.

Mathematics
1 answer:
horrorfan [7]3 years ago
8 0

Answer:

There are no options, so i will answer in a general way.

In a function:

y = f(x)

The output is y, and the input is x, and the ordered pair is written as (x, y)

In this case, we have the function:

y = -7*x + 6

Then we need to have different inputs and then find the outputs for each.

For example, if x = 1.

y = -7*1 + 6 = -1

Then we have the ordered pair (1, - 1)

if x = 0

y = -7*0 + 6 = 6

then we have the ordered pair (0, 6)

The general ordered pair is written as:

(x, y =  -7*x + 6)

or:

(x,   -7*x + 6)

Where you only need to replace the value of x.

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Arte-miy333 [17]

Answer:

a) x = 5

b) x = 4

Step-by-step explanation:

a) \frac{3x+4}{2} = 9.5

  3x+4 = 9.5(2)

      3x = 19-4

        x = 15/3

         x = 5

b) \frac{7+2x}{3} = 5

  7+2x = 5(3)

      2x = 15-7

        x = 8/2

         x=4

6 0
2 years ago
A robot moving forward at a constant speed takes 2.5 hours to travel 1 kilometer. Moving forward at this same constant speed, it
makvit [3.9K]

Answer:

The length of the hallway is 10 m.

Step-by-step explanation:

Given:

Time taken to cover 1 km = 2.5 hours

Distance covered in 2.5 hours = 1 km

Therefore, speed of robot = \frac{\textrm{Distance}}{\textrm{TIme}}=\frac{1}{2.5}=0.4\ km/h

Now, speed is constant.

Now, time taken to cover the length of hallway = 90 s

Speed of the robot = 0.4 km/h

Converting 0.4 km/h to m/s, we multiply by the factor \frac{5}{18}. This gives,

0.4\times \frac{5}{18}=\frac{1}{9}\ m/s

Now, distance of the hallway is equal to the product of speed and time. So,

Distance of hallway = Speed \times Time

Distance of hallway = \frac{1}{9}\times 90=\frac{90}{9}=10\ m

Therefore, the length of the hallway is 10 m.

5 0
3 years ago
Choose the correct answers for (a) the total installment price, (b) the carrying charges, and (c) the number of months needed to
yanalaym [24]
A
100+89.50×36
=3,322
b
3,322−2,900
=422
c
2,900÷89.50
=33
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3 years ago
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EASY POINTS:
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Answer:

31

Step-by-step explanation:

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3 years ago
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Simplify each expression.
kati45 [8]

1:13x-14

2:-6x+21

3: 20x-18

4:5x+15

5:14n+36

6:-12n+17

7:8n+32

8:k-11

9:-7k+37

10:-13k+34

11:2k+7

12:x+52

13:-2x+21

14:3x+21

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