# Two triangles are similar. the dimensions of the first are 7, 8, and 10, while the dimensions of the second one are 3.5, 4, and 5. the scale factor used to get from the first triangle to the second one is what?

0 votes

## 4 Answers

0 votes
by (2.1k points)
The scale factor used is .5 because 7, 8, and 10 multiplied by .5 will equal 3.5, 4, and 5.
0 votes
by (13.3k points)

that made no sense your just writing the numbers down in another format

0 votes
by (59.5m points)

Answers:

k = 13The smallest zero or root is x = -10

===============================

Work Shown:

note: you can write "x^2" to mean "x squared"

f(x) = x^2+3x-10

f(x+5) = (x+5)^2+3(x+5)-10 ... replace every x with x+5

f(x+5) = (x^2+10x+25)+3(x+5)-10

f(x+5) = x^2+10x+25+3x+15-10

f(x+5) = x^2+13x+30

Compare this with x^2+kx+30 and we see that k = 13

Factor and solve the equation below

x^2+13x+30 = 0

(x+10)(x+3) = 0

x+10 = 0 or x+3 = 0

x = -10 or x = -3

The smallest zero is x = -10 as its the left-most value on a number line.

0 votes
by (59.5m points)
Bread - 3 choices
Meat - 5 choices
Veggies - 7 choices

1br 1mt 1vg = 3×5×7 = 105

1br 2mt 3 vg = 3×5×4×7×6×5 =12600

7vg 1br = 3×1 = 3