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slavikrds [6]
3 years ago
12

Are -(x-4) and -x+4 equivalent?

Mathematics
2 answers:
zavuch27 [327]3 years ago
8 0

Answer:

no

Step-by-step explanation:

aleksandr82 [10.1K]3 years ago
7 0

Answer:

yes they are

Step-by-step explanation:

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The width of a rectangle is x. Its length is 3x. How long is the diagonal of the rectangle? Express your answer in simplified ra
nikklg [1K]

Answer:

The length of the diagonal is x√10

Step-by-step explanation:

Here, we want to find the length of the diagonal

The diagonal will represent the hypotenuse of a triangle formed with the width and length of the triangle being the measure of the other sides

Mathematically, we then apply Pythagoras’ theorem to get this

we have this as that the square of the diagonal equals the sum of the squares of the two other sides

d^2 = x^2 + (3x)^2

d^2 = x^2 + 9x^2

d^2 = 10x^2

d = √(10x^2)

d = x√10

7 0
3 years ago
11/12 - (-10) - 5/6 as a single rational number
Harlamova29_29 [7]

Answer:

121/12

Step-by-step explanation:

1. 11/12 - (-10) = 11/12+10 = 131/12

2. 131/12-5/6 = 131/12 - 10/12 = 121/12

7 0
3 years ago
A submarine cruises underwater at 20 km/h and on
Darina [25.2K]

Answer:

System of equations:

20x + 30y = 650

x + y = 25

Time underwater = 10 hours

Time at the surface = 15 hours

Step-by-step explanation:

Let x = time underwater at 20 km/h.

Let y = time on the surface at 30 km/h.

speed = distance/time

distance = speed * time

distance underwater: 20x

distance on the surface: 30y

total distance: 650

20x + 30y = 650

total time: x + y

total time: 25

x + y = 25

20x + 30y = 650

x + y = 25

20x + 30y = 650

-20x - 20y = -500

--------------------------------

          10y = 150

              y = 15

x + y = 25

x + 15 = 25

x = 10

4 0
3 years ago
Help me with this math question about Adonica
marysya [2.9K]

Answer:

3/4x = 19/5

x is 76/15

The complete number of bags would be 5.

5 0
3 years ago
Which of the following equations describes the graph?
cluponka [151]

Answer:

Which cone has a volume of 24 7 cm?

-

1

-

-

3.5 cm!

4.5 cm

1

6.5 cm

B = 25.4 cm

1

7/5 cmi

1

8 cm

3 cm

B = 42

Step-by-step explanation:

3 0
3 years ago
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