Mathematics, 26.02.2021 01:50 bry7474
The total length of mid-ocean ridge spreading centers is about 80,000 km. The average spreading rate of ridges is 1.25 cm/yr. Calculate the area of new ocean crust that forms each year.
Answers: 3
Mathematics, 22.06.2019 00:00
One of the complementary angles is 4 degrees mor than the other. find the angles (recall that complementary angles are angles whose sum is 90 degrees.) which of the following can not be used to solve the problem if x represents one of the angles? a. 2x-4=90 b. 2x+4=90 c. x+4=90
Answers: 1
Mathematics, 22.06.2019 01:30
Atriangle has side lengths of x, x+11, and 3x+5. what is the perimeter? question 1 options: 3x2+38x+55 3x3+38x2+55x 5x+16 4x+16
Answers: 2
Mathematics, 22.06.2019 02:30
According to a research study, parents with young children slept 6.4 hours each night last year, on average. a random sample of 18 parents with young children was surveyed and the mean amount of time per night each parent slept was 6.8. this data has a sample standard deviation of 0.9. (assume that the scores are normally distributed.) researchers conduct a one-mean hypothesis at the 5% significance level, to test if the mean amount of time parents with young children sleep per night is greater than the mean amount of time last year. the null and alternative hypotheses are h0: μ=6.4 and ha: μ> 6.4, which is a right-tailed test. the test statistic is determined to be t0=1.89 using the partial t-table below, determine the critical value(s). if there is only one critical value, leave the second answer box blank.
Answers: 3
Mathematics, 22.06.2019 02:50
Triangle dog was rotated to create triangle d'o'g'. describe the transformation using details and degrees.
Answers: 3
The total length of mid-ocean ridge spreading centers is about 80,000 km. The average spreading rate...
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