Pls help ! i need help with all 3 questions quick

1 answer:

6 0

Ask your mummy......

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Kitty [74]

Find the axis of symmetry for this parabola.

y = 3x2 - 6x - 9

x = -3
☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆x = 1
x = 3
x=4

-b/2a=-(-6)/2(3)
=6/6=1

7 0

3 years ago

Varvara68 [4.7K]

Answer:

The probability of an eighth grader winning is 1/3

Step-by-step explanation:

Total no. of students = 42

Number of students in 7th grade = 21

Number of students in 8th grade = 14

Number of students in 9th grade = 7

Probability of event = $\frac{\text{Favorable outcomes}}{\text{Total outcomes}}$

So,the probability of an eighth grader winning= $\frac{14}{42}=\frac{2}{6}=\frac{1}{3}$

Hence The probability of an eighth grader winning is 1/3

3 0

2 years ago

kifflom [539]

I am pretty sure it is 3520 feet per minute.

3 0

3 years ago

Juliette [100K]

Find each sum.

1. 56+ (-56) = 0

The number series 1, 2, 3, 4, 55, 56. Therefore, 1596 is the sum of positive integers.

5 0

2 years ago

Lera25 [3.4K]

Answer: 73.1 pounds of sand.

Step-by-step explanation: 48.5 Pounds (Big Bag) + 24.6 (Small Bag)

48.5+24.6 is equal to 73.1 pounds of sand. That is how much sand was purchased altogether.

3 0

3 years ago