Please help me I really need help

Mathematics

2 answers:

elixir [45]3 years ago

8 0

Answer:

Step-by-step explanation:

Lowest Common Multiple= 56

IgorLugansk [536]3 years ago

4 0

Answer:

56 seconds

Step-by-step explanation:

One way of doing this is to write out sequences for the number of seconds that elapse in each case.

First bulb: 0 7 14 28 56 63

Second bulb: 0 8 16 24 32 40 48 56

Both bulbs flicker after 56 seconds.

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A seal is swimming in the ocean 5 feet below sea level. It dives down 12 feet to catch

Bond [772]

The seals final elevation is 9 feet below sea level.

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3 years ago

An artist purchased 24 high quality canvases to be used for painting this fall. Each week she will allow herself to use three of

Nadusha1986 [10]

Answer:

canvases over weeks

Step-by-step explanation:

Given:

w(h) represents how many hours per week

c(t) approximates how many canvases she paints per hour

In function composition, if we have two function f(x) and g(x) then

(f.g)(x) or f(g(x)) means first apply g(), then apply f() i.e. applying function f to the results of function g.

Now we have c(w(h)), this means first we apply w(h) which will give us hours per week and then we'll apply function 'c' on the results of 'w' (that is number of hours for weeks painted). As result we'll get number of canvas per week!

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3 years ago

If you use a 0.10 level of significance in a two-tail hypothesis test, what is your decision rule for rejecting a null hypothesi

Dovator [93]

Answer:

Our decision rule will be to reject The null hypothesis H0 if the test statistic is less than -1.645, or if it is greater than +1.645.

Step-by-step explanation:

The hypotheses would be;

Null hypothesis;H0: μ = 500

Alternative hypothesis;Ha: μ ≠ 500

Since it's two - tailed at 0.1 level of significance, then each tail will contain 5% or 0.05. From the z-table attached, the corresponding critical value of 0.05 is approximately 1.645 standard deviations from the mean.

Thus, our decision rule will be to reject The null hypothesis H0 if the test statistic is less than -1.645, or if it is greater than +1.645.