5x+5=3
5x=-2
X=-2/5
Alternative form is x=-0.4
Answer:
Slope = -3
Step-by-step explanation:
<u>Slope formula:</u>
m = slope.
<u>Substitute the </u><u>point</u><u> </u><u>values</u><u> </u><u>given</u><u> </u><u>into the formula</u><u>:</u>
<u>Solve:</u>
The slope of your line is -3.
Answer: x = 3
y = 30
Step-by-step explanation:
substitute y = 10x into the first equation , we have
- x +2(10x) = 57
-x + 20x = 57
19x = 57
x = 57/19
x = 3
Substitute x = 3 into the second equation
10(3) = y
Therefore y =30
Answer:1
Step-by-step explanation: yea
Answer:
The tree is 20.6 ft tall.
Step-by-step explanation:
Please check the attached graph.
From the diagram, it is clear that John is 5 ft tall is standing 20 feet away from a tree, making an angle of elevation to be 38⁰.
The diagram makes a right-angled triangle.
- Given the angle = Ф = 38⁰
- Hypotenuse = Tree length = c ?
Pythagorean Theorem:
For a right-angled triangle, with sides 'a' and 'b', the hypotenuse 'c' is defined as:
substituting a=5, b=20
ft
Thus, the tree is 20.6 ft tall.