Twenty is 40% of 50 because 10% of 50 is 5 so 5*4 = 20
Answer:
- 11 or - 15
Step-by-step explanation:
Factorise
x² - 13x + 42
Consider the factors of the constant term (+ 42) which sum to give the coefficient of the x- term (- 13)
The factors are - 6 and - 7, since
- 6 × - 7 = + 42 and - 6 - 7 = - 13, thus
x² - 13x + 42 = (x - 6)(x - 7)
compare to (x + A)(x + B)
A = - 6, B = - 7
thus 3A - B = 3(- 6) - (- 7) = - 18 + 7 = - 11
The factors may also be expressed as (x - 7)(x - 6)
with A = - 7 and B = - 6, then
3A - B = 3(- 7) - (- 6) = - 21 + 6 = - 15
Answer:
-5 turns into 5 and the y is probably 1, so 5+9 is equal to 14.
Step-by-step explanation:
Answer:
p= 0.44 x 260
Step-by-step explanation:
Hello! To draw a triangle, first, we have to follow a condition of existence.
This rule is:
• one of the sides must be ,bigger, ,than the absolute value, of the ,difference between the other two, sides
• the unknown side must be ,smaller ,than the ,sum of the other, two sides.
Let's write these rules using a, b, and c for the sides:
Considering a = 7.8 and b = 5.6:
[tex]\begin{gathered} |a-b|So, the
third side must be
smaller than 13.4 and bigger than 2.2.
