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castortr0y [4]
2 years ago
10

Find the value of 6a+5b when a = 4.2 and b = -1.9

Mathematics
1 answer:
anastassius [24]2 years ago
5 0

Answer:

the answer is -5.3 hopes this helps

Step-by-step explanation:

6a+5b=?

6(4.2)+5(-1.9)=?

6(4.2)= 25.2

5(-1.9)= -9.5

4.2 - 9.5= -5.3

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2x + 3 (x - 10) = 45 ?? A. X =15 B. X=3 C. X=7 D. X=11
mario62 [17]

Answer:

A. x = 15

Step-by-step explanation:

2x + 3 * (x - 10) = 45

2x + 3x - 30 = 45

5x - 30 = 45

5x = 75

x = 15

3 0
3 years ago
Find the Constant Rate of Change of the following table: k =
ValentinkaMS [17]

9514 1404 393

Answer:

  10

Step-by-step explanation:

If there is a constant rate of change, its value will be ...

  k = y/x

  k = 250/25 = 10

The constant rate of change is 10.

  y = 10x

8 0
3 years ago
Name a decimal in between 0.4 and 0.5?
Luba_88 [7]
I think that 0.45 would be one.
8 0
3 years ago
Stella graphs the equation y=1/3x – 2
faltersainse [42]

we have

y=\frac{1}{3}x-2

<u>Statements</u>

<u>case A)</u> The graph is a straight line.

The statement is True

Because, this is a linear equation (see the attached figure)

<u>case B)</u> The line passes through the origin.

The statement is False

Because the point (0,0) is not a solution of the equation

Verify

Substitute the value of x and y in the equation

0=\frac{1}{3}*0-2

0=-2 ------> is not true

the point (0,0) is not a solution

therefore

The line does not pass through the origin

<u>case C)</u> The line passes through the point  (0,-2)

The statement is True

Because the point (0,-2) is a solution of the equation

Verify

Substitute the value of x and y in the equation

-2=\frac{1}{3}*0-2

-2=-2 ------> is true

the point (0,-2) is a solution

therefore

The line passes through the point (0,-2)

<u>case D) </u>The slope of the line is 3

The statement is False

Because, the slope of the line is m=\frac{1}{3}

<u>case E)</u> The y-intercept of the line is 2

The statement is False

we know that

The y-intercept is the value of y when the value of x is equal to zero

so

For x=0

find the value of y

y=\frac{1}{3}*0-2=-2

the y-intercept is equal to -2


5 0
3 years ago
Read 2 more answers
Please help with theses two questions.
Goryan [66]
Yea i have no clue how she can be like a
4 0
3 years ago
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