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Natasha2012 [34]
3 years ago
10

Solve the following equations mentally 1. 5 – x = 8 2. -1 = x – 2 3. -3x = 9 4. -10 = -5x

Mathematics
2 answers:
Ghella [55]3 years ago
3 0

Answer:

1. 5 – x = 8 , x = -3

2. -1 = x – 2 , x = 1

3. -3x = 9 , x = -3

4. -10 = -5x , x= 2

Step-by-step explanation:

Lapatulllka [165]3 years ago
3 0

Answer:

1. x= -3 ,2. x=1 , 3.x= -3 ,4.x=2

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Daniel [21]

Answer:

  • C. The lines will intersect once, because this system has one solution

Step-by-step explanation:

<u>System of equations: </u>

  • 5x - 6y = 4
  • 3y + 2x = 7

The system of linear equations has one solution if the lines intersect, no solution if the lines are parallel, infinitely many solutions if lines are same

Let's put the lines into slope-intercept form to compare

<u>Line1 </u>

  • 5x - 6y = 4
  • 6y = 5x - 4
  • y = 5/6x - 4/6

<u>Line </u>2

  • 3y + 2x = 7
  • 3y = -2x + 7
  • y = -2/3x + 7/3

As we see lines have different slopes so they are different and they intersect once

This system has one solution

6 0
3 years ago
In the triangle below, find the measurements of the unknown angles. a 75 • A. 75 1059 B. 40°. 80° O c. 50, 10° O D. 25°, 50 O E
Deffense [45]

answer:

explanation:

hope it helps!

5 0
3 years ago
Please help, no fake answers and please...
alex41 [277]

Answer:

a = 5120

b = 1.25

Step-by-step explanation:

Let the exponential function representing the given table is,

f(x) = a(b)^x

Here, f(x) = Number of views

x = Number of weeks

We choose two points from the given table and satisfy the equation of the function.

Let the points are (0, 5120) and (1, 6400)

For a point (0, 5120),

f(0) = a(b)⁰ = 5120

a = 5120

Now for the second point (1, 6400),

6400 = 5120(b)¹

b = \frac{6400}{5120}

b = 1.25

Therefore, a = 5120 and b = 1.25 are the values.

6 0
3 years ago
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Marat540 [252]

Answer:

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Step-by-step explanation:

Let's define the event A as:

A=" Select a 4 from a standard deck of 52 cards"

We know that in a standard deck we have 4 different types of 4, spade, heart, diamond and club.

And by definition of simple event we need to have just one possible outcome in the experiment, and on this case we have 4 possible options for event A, so for this reason the event A can't be considered as simpl event.

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3 years ago
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Step-by-step explanation:

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