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Luba_88 [7]
3 years ago
8

A camera attached to a telescope photographs a stars image once every .045 seconds. How many complete images can the camera capt

ure in 3 seconds?
Mathematics
1 answer:
padilas [110]3 years ago
4 0
Writing and solving an equation of ratios would seem to be the best way to go.

0.045 sec       3 sec
------------- = ------------
1 image           x

Then 0.045x = 3, and x = 66 2/3 images, best rounded down to  66 images.

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A researcher is conducting a study of charitable donations by surveying a simple random sample of households in a certain city.
nirvana33 [79]

Answer:

H0: p ≤ 0.50

Ha: p > 0.50

Step-by-step explanation:

The null hypothesis (H0) tries to show that no significant variation exists between variables or that a single variable is no different than its mean. While an alternative Hypothesis (Ha) attempt to prove that a new theory is true rather than the old one. That a variable is significantly different from the mean.

For the case above;

Let p represent the proportion of households in the city that gave a charitable donation in the past year

The null hypothesis is that the proportion of households in the city that gave a charitable donation in the past year is not more that 0.50

H0: p ≤ 0.50

The alternative hypothesis is that the proportion of households in the city that gave a charitable donation in the past year is more that 0.50

Ha: p > 0.50

7 0
3 years ago
At the 6th grade school dance, there are 132 boys, 89 girls, and 14 adults. What is the ratio of adults to boys at the school da
Anna71 [15]

Answer:

14 to 132

Step-by-step explanation:

We are given that there are 132 boys and 14 adults. Since the question is only asking for the ratio of adults to boys, we don't have to worry about the number of girls in this question. From here, we see that the question is asking for the ratio of adults to boys, so we put it in that exact order. Our answer is 14 to 132. I hope this helps and please don't hesitate to reach out with more questions!

8 0
3 years ago
Calculate without distribution<br> 13.45 × .20 =
amid [387]

Answer:

The answer in this proble is 269

8 0
3 years ago
Read 2 more answers
Please select the best answer from the choices provided <br><br> A<br> B<br> C<br> D
larisa86 [58]

Answer:

C

Step-by-step explanation:

6 0
3 years ago
A survey asked 72 randomly chosen students if they were going to attend the school play twelve said yes, predict the number of s
Lilit [14]
72 people questioned , 12 are going . that means that 16.6..% of which are going , 16.6....% is equal to 1/6 so 210 x 6 = 1260 . the number of students that attend the school would be 1260 if im right but if its how many students attended the play then it would be a 1/6 of 210 which is 35
8 0
3 years ago
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