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3 years ago

The table shows the cost of downloading songs.

Mathematics

1 answer:

Sonbull [250]3 years ago

3 0

Answer:

Step-by-step explanation:

rate of change=cost per song

so the first option

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2 plus 4 multiplied by negative 6 minus 3 multiplied by 5

Monica [59]

$2\text{ + 4}\cdot(-6)\text{ - 3}\cdot5\text{ = 2 -24 - 15 = 2 - 39 = -37}$

6 0

1 year ago

Evaluate x (5-y) ; use x=6,and y=1

Zolol [24]

Answer:

Step-by-step explanation:

x (5-y)

Let x=6,and y=1

6(5-1)

PEMDAS says parentheses first

6(4)

6 0

3 years ago

Not sure how to solve this one

Alex73 [517]

Answer:

$x\approx 63.4^0$

Step-by-step explanation:

In the given right triangle,

Measure of angle = x°

Opposite side of the angle = 12 units

Adjacent side of the angle = 6 units

By taking tangent ratio of the given angle,

tan(x°) = $\frac{\text{Opposite side}}{\text{Adjacent side}}$

= $\frac{12}{6}$

= 2

$x^0=\text{tan}^{-1}(2)}$

$x=63.43^0$

$x\approx 63.4^0$

4 0

3 years ago

Given f(x) = 3x - 1 and g(x)= -x + 6, find f(-2) + g(5).<br><br> A.-6<br> B.6<br> C.8

vladimir2022 [97]

Find what f(x) is when x = -2
3(-2) - 1 = -7
Find g(x) when x = 5
-(5) + 6 = 1
Add -7 + 1
-7 + 1 = -6
Option A)

3 0

3 years ago

Write an equation that you can use to find the value of x.

MariettaO [177]

Line CA is a straight line, meaning it adds up to 180°

Line BE splits the line into two supplementary angles, because when the two angles are added together they will equal 180°

Using the rule of supplementary angles, we can then make the equation 3x + 8x + 15 = 180

Now, simplify the equation by combining like terms

11x + 15 = 180

To solve, isolate x

11x + 15 = 180
11x = 165
x = 15

7 0

2 years ago