Mrs. Myles gave the same test to both her first and third period class. In first period, the mean was 75 and the range was 30. In third period, the mean was 85 and the range was 50. Which is a true statement?A) Most of third period scored in the 80's.
B) More people had a score in the 70's in first period.
C) On average, third period did better than first period.
D) On average, first period did better than third period.
Answers
Answer:
C) On average, third period did better than first period
Step-by-step explanation:
Usa test prep
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Evaluate the expression when a=-4 and x=5.a-2x
Marisa wants to buy a DVD player that costs$150. She already saved $80 and plans to save an additional $10 each week. Write an equation that represents this.
Solve the quadratic equation by completing the square.x^2+4x-6=0 First, choose the appropriate form and fill in the blanks with the correct numbers. Then, solve the equation. Round your answer to the nearest hundredth. If there is more than one solution, separate them with commas.
Alex and ben go to a cafe with some friends. Alex buys 4 cups of coffee and 3cups of tea. He pays a total of £6.95. Ben buys 5 cups of coffee and 2 cups of tea. He pays a total of £7.20 Work out the cost of each cup of coffee and the cost of each cup of tea
Answers
Answer:
x=-5 i think
Step-by-step explanation:
Answers
Answer:
y=2x-9
Step-by-step explanation:
The slope is 2 and the y-intercept is -9
Answer:
y = 2x - 9
Step-by-step explanation:
Y2 - Y1/X2 - X1
7 - 1/8 - 5
6/3
= 2
y = 2x + b
1 = 2(5) + b
1 = 10 + b
-9 = b
y = 2x - 9
Point : (0,5)
Slope: m=-3/5
Answers
Answers
100 times 11
100 groups of 11=1100
Hope I helped:)
100 (11)
100 × 11
⇒ 1100.
Answers
Answer:
The length of the rectangle is 16 yards
The width of the rectangle is 9 yards
Step-by-step explanation:
The given parameters are;
The perimeter of the rectangle = 50 yards
The width, W of the rectangle = 1 + Length, L/2
Therefore we have;
W = 1 + L/2
2 × W + 2 × L = 50
2 × (1 + L/2) + 2 × L = 50
2 + L + 2·L = 50
3·L = 50 - 2 = 48
L = 48/3 = 16
The length, L = 16 yards
The width, W = 1 + L/2 = 1 + 16/2 = 1 + 8 = 9
The width, W = 9 yards.
Answers
Answer:
4/5
Step-by-step explanation:
{(2/5) / (1/2)} ×1
= (2/5)÷(1/2)
= 2/5×2/1
= 4/5
Answer:
4/5
Step-by-step explanation:
Because if it can eat 2/5's in 1/2 hours, then if it eats for 1 whole hour or 2/2's it will be able to eat 4/5's of it's own body weight.
Just imagine that one half hour is 1 and if you add two half hours together it makes one complete hour or 2/2. So just multiply it by 2 cause it was eating for two half hours.