Let,
digital cameras be "x"
video cameras be "y"
Now,
According to the question,
5x + 3y = $3,213..................................................equation (1)
y = 4x..................................................................equation (2)
Taking equation (1)
5x + 3y = $3,213
Substituting the value of "y" from equation (2), we get,
5x + 3(4x) = $3,213
5x + 12x = $3,213
17x = $3,213
x = $3,213 / 17
x = $189
Taking equation (2)
y = 4x
Substituting the value of "x", we get,
y = 4 ($189)
y = $756
Now,
John buys a digital and a video camera. So, it costs him ($189 + $756) = $945
Perimeter=2(w+l)
=2(3w)
=6w
41.1=6w
w=6.85
Answer:
Length is 8 feet
Width is 28 feet
Step-by-step explanation:
We can think of this as "parts" problem.
- If the ratio of length to width is 2 to 7, we can say that the total parts is 2 + 7 = 9
- We also know that the measurement of Length + Width is 36 ft.
There are 9 parts in total and it is 36 feet. Hence, 1 part is:
feet
<em><u>From initial ratio statement, we know length is 2 parts and width is 7 parts.</u></em>
Length is feet
Width is feet
Slope intercept form: y = mx + b
mx = slope
b = y-intercept
We already know the slope is 2/5, so we can write that as 2/5x, or 0.4x
The y-intercept is the value of y when x is equal to 0.
Since we already know what that is, we can fill in the rest of the equation.
Y = 2/5x - 9
Answer:
i am in k12.com online school and i just took the test.
the answer is 3.7−(−1.5).
hope it helped
3.7−(−1.5) is the answer.