378. Comparing the each batch, there is a difference of 18 for each batch. So 7*18= 126, then add that to 252; you'll get 378.
(ex 198-180=18; 216-198=18; etc)
hope that helps
Answer:
A. 27 degrees, 63 degrees, 90 degrees.
Step-by-step explanation:
Let the angle of the triangle be x
<u>Given the following data;</u>
3 : 7 : 10 = 3x : 7x : 10x
We know that the sum of the sides of a triangle is equal to 180 degrees.
3x + 7x + 10x = 180
20x = 180
x = 180/20
x = 9
<u><em>For the first side;</em></u>
3x = 3 × 9 = 27°
<em><u>For the second side;</u></em>
7x = 7 × 9 = 63°
<em><u>For the third side;</u></em>
10x = 10 × 9 = 90°
Therefore, the ratio of the angles of the triangle is 27° : 63° : 90°.
Answer:
C (-6, 2)
Step-by-step explanation:
in order to solve this system of equation, we would say that let
y = 5x + 32................................equation 1
y = -4x - 22.........................................equation2
substitute equation 1 into equation 2
we have,
5x + 32 = -4x - 22
combine the like terms
5x +4x + 32 = -22
9x = -22-32
9x = - 54
divide both sides by the coefficient of x which is 9
9x/9 = -54/9
x = -6
put x =-6 into equation 1
y = 5x + 32................................equation 1
y = 5(-6) + 32
y = -30 + 32
y = 2
therefore the value of x and y is -6 and 2 respectively
C. No, this is not a valid inference because she asked only 35 families
