Answer:
The last one
Step-by-step explanation:
68/5 - 22/5 = 46/5 = 9 1/5
If a secant and a tangent of a circle are drawn from a point outside the circle, then the product of the lengths of the secant and its external segment equals the square of the length of the tangent segment.
y² = 7(15+7)
y² = 7*22
y² = 154
y = √154
y = 12.4 to the nearest tenth
Answer: C.Sample 2: 10 boys and 35 girls
Step-by-step explanation:
The class president wants to survey the students at the high school about the selection of food offered by the school cafeteria. The president knows that there are 150 boys and 175 girls.
girls in the high school. Which of the following is a representative sample of the high school population?
A.Sample 4: 7 boys and 6 girls
B.Sample 1: 10 boys and 10 girl
C.Sample 2: 10 boys and 35 girls
D.Sample 3: 6 boys and 7 girls
Answer:
1st piece = 4 ft
2nd piece = 4 ft
3rd piece = 8 ft
Step-by-step explanation:
Let 3rd piece's length be "x"
Each of the two remaining pieces will be 4 feet shorter, so each other piece would be:
x - 4
and
x - 4
Since sum of all 3 pieces is 16, we can write:
1st piece + 2nd piece + 3rd piece = 16
x - 4 + x - 4 + x = 16
3x - 8 = 16
3x = 24
x = 24/3
x = 8
Third piece is 8 feet and each remaining piece is 8 - 4 = 4 feet and 4 feet
1st piece = 4 ft
2nd piece = 4 ft
3rd piece = 8 ft
Answer:
B
Step-by-step explanation:
since the variable never become denominator, the highest power is 2, and the coefficient of x² is non zero