Answer:
draw a line and mark the points
Step-and mark the pointsby-step explanation:
1: Bettina's 60, and Melvina's 20.
2: 4.5 gallons
X=12.35
b = (2 × area)/a
= 5.63636
c = √ a2 + √ b2
= √112 + √ 5.63636363636362
= √152.76859504132
= 12.35996
Let's start by working out what percentage 38 / 55 is. To work this out, literally just do 38 ÷ 55, and then × 100. So Samantha got 69% (to the nearest percent).
To pass the test, you needed 70%. Therefore, Samantha failed as 38 ÷ 55 × 100 shows us that 38 marks is equivalent to 69%, which is not enough to pass.
Answer:
Step-by-step explanation:
Total number of questions in the test is 20.
Total number of questions that Alyssa answered correctly is 16.
The percentage of questions that she answered correctly would be
16/20 × 100 = 80%
To get an A, she needs to answer 90% of the questions correctly. Let x represent the number of questions that she needs to answer correctly to get an A. Therefore,
x/20 × 100 = 90
100x = 20 × 90 = 1800
x = 1800/100 = 18
She would need to answer 18 questions correctly to get an A
Alyssa's friend Jessie answered three times more questions correct than incorrect. This means that for every 3 correct answers, she had 1 wrong answer. For 15 correct answers ,she would get 5 wrong answers. Therefore, she got fewer correct answers than Alyssa.
Her percentage is
15/20 × 100 = 75%
Alyssa got a higher percentage of the test questions correct.