Answer:
otterbox costs $95; beats costs $210
Step-by-step explanation:
x = otterbox y = beats
4x + 2y = 800 y = 2x + 20
4x + 2(2x + 20) = 800
4x + 4x +40 = 800
8x + 40 = 800
8x = 800 - 40
8x = 760
x = 760 / 8
x = 95 Otterbox costs $95 each
4x + 2y = 800
4(95) + 2y = 800
380 + 2y = 800
2y = 800 - 380
2y = 420
y = 420 / 2
y = 210 Beats costs $210
4(95) + 2(210) = 800
380 + 420 = 800
Owes more than 1425
owe>1425
owed musbe be equal to how much he paid back
paid back 210
and 153 per month is paid back (represent number of months by x)
so
owe=210+152x
210+153x>1425
153x+210>1425
Don't know if this is right or if it helps but
The trick to calculating the area here is to subdivide the diagram into smaller parts. For example, there's a 3 cm-by-3cm square. The rectangle is 4 cm by 8 cm.. The triangle has a base of 5 cm and a height of 3 cm.
Total area = area of square + area of rectangle + area of triangle
= 9 cm^2 + 32 cm^2 + (1/2)(5 cm)(3 cm)
= (9 + 32 + 7.5) cm^2
= 48.5 cm^2 (total area of figure)
16 because 16 has 1,2,4,8 and itself (16)
Answer:
m = 
Step-by-step explanation:
<h3>
Finding the slope of the given line </h3>
We need to find the slope of this equation to find the slope of a line perpendicular to it. This means we must solve for y.
Start off by subtracting 8x from both sides of the equation to start isolating the variable y.

Now solve for y by dividing both sides of the equation by -7.

This can be broken into two parts by distributing the negative sign from the -7 into the 9 and -8x like so:

The slope of a line is the coefficient of x, so in this case the slope of the given line (
) is
.
<h3>Finding the slope of a line perpendicular to the given line</h3>
Two lines that are perpendicular would have opposite reciprocal slopes, which means the perpendicular slope would be the negative counterpart and would be flipped.
For example, if you have 2 as the slope of one of the perpendicular lines, the other line would be the opposite (-2) reciprocal (
).
Therefore, since we have the slope of one of the perpendicular lines (the given line), we would find the opposite reciprocal of it's slope to solve this problem.
Slope: 
- Opposite:

- Reciprocal:

The slope of the line perpendicular to
is
.