Answer:
5x+4
Step-by-step explanation:
Answer:
x = 5
Step-by-step explanation:
The difference between consecutive terms will be equal , then
a₂ - a₁ = a₃ - a₂ , that is
x + 9 - (3x - 2) = 2x + 5 - (x + 9) ← distribute parenthesis on both sides
x + 9 - 3x + 2 = 2x + 5 - x - 9 , simplify both sides
- 2x + 11 = x - 4 ( subtract x from both sides )
- 3x + 11 = - 4 ( subtract 11 from both sides )
- 3x = - 15 ( divide both sides by - 3 )
x = 5
False: 10 • 0.02=
when anything is multiplied by two, move a decimal once to the right~ if it is a whole number, add a zero.
0.02-> move one decimal to the right= 0.2
Therefore, 2 is not equal to 10 • 0.02
10 • 0.02= 0.2
BUT 10 • 0.2= 2
Answer:
2y+367
Step-by-step explanation:
<span>Given: Right △ABC as shown where CD is an altitude of the triangle. We prove that
Because △ABC and △CBD both have a right angle, and the same angle B is
in both triangles, the triangles must be similar by AA.
Likewise, △ABC
and △ACD both have a right angle, and the same angle A is in both
triangles, so they also must be similar by AA.
The proportions
and
are
true because they are ratios of corresponding parts of similar
triangles.
The two proportions can be rewritten as
and
.
Adding
to both sides of first equation,
, results in the
equation
.
Because
and ce are equal, ce can be
substituted into the right side of the equation for
, resulting in the
equation
.
Applying the converse of the distributive
property results in the equation
.
The last sentence of the proof is
Because f + e = c,
.</span>