Given that we have the change in temperature over 7 hours and we are looking for the change over 1 hour, we can divide the total change in temperature by 7. Thus, the change in temperature would be 
.
Additionally, this can be solved by equations:
By using two different methods, we can determine that the change each hour was equal to 42/7 C° per hour.
Answer:
equation: y=-2x+2
a=-3
b=-8
Step-by-step explanation:
we need to find the equation of the line containing the point (3,-4) and has the slope (m) of -2
slope-intercept form is given as y=mx+b, where m is the slope and b is the y intercept
we can plug what we know into the equation:
y=-2x+b
we need to find b though
since the point will pass through the point (3,-4) we can subsitute it into the equation to find b
-4=-2(3)+b
-4=-6+b
2=b
the y intercept is 2
so the equation is y=-2x+2
the line also contains the points (a,8) and (5,b)
first, let's find a
a is the x value of the point
we know the value of y (8)
substitute y as 8 and solve for x
8=-2x+2
subtract
6=-2x
-3=x=a
so a is -3
now find b
b is the y value of the point
we know the x value (5)
substitute x as 5 and solve for y
y=-2(5)+2
y=-10+2
y=-8=b
so b is -8
hope this helps!
Answer:
B
Step-by-step explanation:
Since the triangle is right use the tangent ratio to find x
tan22° = 
= 
Multiply both sides by x
x × tan22° = 203 ( divide both sides by tan22° )
x = 
≈ 502.5 m → B
Answer:
-28/25 or -1 3/25
Step-by-step explanation:
Hope this helps
Answer:
D
Step-by-step explanation:
![( {2 x})^{ \frac{1}{3} } - 7 = \sqrt[3]{2x} - 7](https://tex.z-dn.net/?f=%28%20%7B2%20x%7D%29%5E%7B%20%5Cfrac%7B1%7D%7B3%7D%20%7D%20%20-%207%20%3D%20%20%5Csqrt%5B3%5D%7B2x%7D%20%20-%207)
