I'm not the smartest but...
No, there are 3 more tens because 45-15=30
30/10 = 3
The vertex form is
where (h,k) is the vertex, and a is the coefficient.
On the graph, the vertex is point (2,0), so our vertex form is
which is answer D. We remove the a, since the parabola is not stretched, just shifted.
Answer:
-31
Step-by-step explanation:
a - 8x will change to (-7) - 8(3) = -31
The division symbol, or /
Answer:
The value of x in centimeters is 22.5 cm
Step-by-step explanation:
The corresponding sides of the similar triangles are proportion which means have equal ratios
∵ Δ ABC is similar to Δ FGH
∵ AB and FG are corresponding sides
∵ BC and GH are corresponding sides
∵ AC and FH are corresponding sides
→ That means the ratios between them are equal
∴ = =
∵ AB = 6 cm and FG = 15 cm
∵ BC = 5 cm and GH = 12.5 cm
∵ AC = 9 cm and FH = x
→ Substitute them in the rule above to find x
∴ = =
→ By using cross multiplication with the 1st and 3rd ratios
∵ 6 × x = 15 × 9
∴ 6x = 135
→ Divide both sides by 6 to find x
∵ =
∴ x = 22.5 cm
∴ The value of x in centimeters is 22.5 cm