All categories

3 years ago

Lauren finished doing 2/7 of her homework in an hour and a half. What is the unit rate at which she did her homework?

Mathematics

1 answer:

stiks02 [169]3 years ago

8 0

The unit rate is basically her progress every hour so...

1.5 hours = 2/7

1 hour = 2/7 x 2/3 = 4/21

answer: 4/21 per hour

You might be interested in

7/12 - □ = 1/6 □ = ________

xz_007 [3.2K]

The answer is 5/12 because 1/6 converts to 2/6 and 7/12-2/6 is equal to 5/12

4 0

2 years ago

Researchers wondered if there was a difference between males and females in regard to some common annoyances. They asked a rando

Zinaida [17]

Answer:

Step-by-step explanation:

Males proportion $p_1 = \frac{163}{532} =0.3064$

Females proportion $p_2 = \frac{203}{589} =0.3447$

$H_0: p_1 = p_2\\H_a: p_1$

(one tailed test for comparison of proportions)

Test statistic = $\frac{p_1-p_2}{p(1-p)\sqrt{\frac{1}{n_1}+\frac{1}{n_2} } }$

=-1.3641

Here p= combined proportion = $\frac{163+203}{532+589} \\=0.3291$

p value = 0.0869

Since p >0.05, accept null hypothesis.

The evidence does not suggest a higher proportion of females are annoyed by this behavior

3 0

2 years ago

Is this right yes or no

Leviafan [203]

Answer:

Yes

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

15. A movie is 1 7/8 hours long. After 45 minutes, how much of the movie is left?

solniwko [45]

Step-by-step explanation:

67.5 minutes of the movie that was left

7 0

2 years ago

By which angle measures can the square be rotated so it maps onto itself?

Amanda [17]

The correct answers are:

90°, 180° and 270°

Explanation:

Squares have rotational symmetry at 90°. This can be found by dividing the number of degrees in a circle, 360, by the number of sides, 4:

360/4 = 90

This means that at all multiples of 90, the square will rotate onto itself. This means that 90, 180 and 270 are all correct.

3 0

2 years ago