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zhenek [66]
3 years ago
11

Examine the system of equations.

Mathematics
2 answers:
stiks02 [169]3 years ago
8 0

By substitution,

1.5x - 6 = -4.5x + 21

6x = 27

x = 4.5

Hence, y = 1.5(4.5) - 6 = 0.75

Ket [755]3 years ago
6 0

Answer: The correct answer is 3/4

Step-by-step explanation:

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Erin swims one half mile in one third hour. Write an equation for the distance y Erin can swim in x hours
cestrela7 [59]
3/2 x = y is the answer
7 0
3 years ago
Your surf shop sells two types of surfboards. The first type A, costs $272 and you make a profit of $29 on each one. The second
brilliants [131]
Let the number of type A surfboards to be ordered be x and the number of type B surfboards be y, then we have

Minimize: C = 272x + 136y

subject to: 29x + 17y ≥ 1210
                 x + y ≤ 50
                 x, y ≥ 1

From the graph of the constraints, we have that the corner points are:

(20, 30), (41.138, 1) and (49, 1)

Applying the corner poits to the objective function, we have

For (20, 30): C = 272(20) + 136(30) = 5440 + 4080 = $9,520
For (41.138, 1): C = 272(41.138) + 136 = 11189.54 + 136 = $11,325.54
For (49, 1): C = 272(49) + 136 = 13328 + 136 = $13,464

Therefore, for minimum cost, 20 type A surfboards and 30 type B surfboards should be ordered.
6 0
3 years ago
What is the slope of the line below?
g100num [7]

Answer:

D. Negative.

Step-by-step explanation:

In truth, when given the graph you don't really need to use the points, but if needed it you would use the formula:

y-y₁=m(x-x₁)

Plug in your information and solve.

-1 - 5 = m (2 - (-1))

-6 = m (3)

-6 = 3m

m = -6 / 3

m = -2

(m = slope)

Also, when shown on the graph =

If the slope is going:

up from left to right: it's positive

down from left to right: it's negative

straight up and down (vertical): it's undefined

straight left to right (horizontal): it's zero.

8 0
3 years ago
Pleasee help mee i begg
Licemer1 [7]

Answer:

Step-by-step explanation:

3:9 = 1:3

1:7 = 2:14

12:4 = 24:8

20:5 = 40:10

Hope it helps!

8 0
3 years ago
PLEASE HELP FAST!! ​
Ostrovityanka [42]

Answer: The answer for x is 28.

Step-by-step explanation: Divide 70 by 10 and you get 7, which is the slope. Then multiply 4x7 and that gets you 28!

5 0
3 years ago
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