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Nina [5.8K]
3 years ago
6

In a car race, for every mile covered by car a, car b covered 4 miles. the ratio of the number of miles covered by car a to the

number of miles covered by car b is ___. 1 to 1 4 to 4 4 to 1 1 to 4
Mathematics
2 answers:
Vladimir [108]3 years ago
4 0

Answer:

1 to 4

Step-by-step explanation:

Because for every mile done by car a, car b does 4 miles

IgorLugansk [536]3 years ago
3 0
The ratio of the number of miles covered by car a to the number of miles covered by car b is 1 t0 4.
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erica [24]

Answer:

40 mph

Step-by-step explanation:

at least I won't crash in one second, and that's not that slow.

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2 years ago
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Find a particular solution to<br> y′′+6y′+5y=18te^(2t).
Andreas93 [3]

Answer:

idk just google it :)

Step-by-step explanation:

1. google it

6 0
3 years ago
Consider a left-tailed test, where the p-value is found to be 0.10. If the sample size n for this test is 49, then the t statist
tigry1 [53]

Answer:

df=n-1=49-1=48  

We know that the p value is 0.1, and since is a left tailed test would be given by:

p_v = P(t_{48} < t_{calculated})=0.1

And we can find the calculated value using excel or the t table.

If we use the following excel code we got: "=T.INV(0.1,48)"

And the calculated value is t_{calculated}=-1.29944

Step-by-step explanation:

State the null and alternative hypotheses to be tested  

We need to conduct a hypothesis in order to determine if the true mean is lower than specified valu \mu_o, the system of hypothesis would be:  

Null hypothesis:\mu \geq \mu_o  

Alternative hypothesis:\mu < \mu_o  

Compute the test statistic  

We don't know the population deviation, so for this case is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:  

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}} (1)  

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

We can find the degrees of freedom for this test given by:

df=n-1=49-1=48  

We know that the p value is 0.1, and since is a left tailed test would be given by:

p_v = P(t_{48} < t_{calculated})=0.1

And we can find the calculated value using excel or the t table.

If we use the following excel code we got: "=T.INV(0.1,48)"

And the calculated value is t_{calculated}=-1.29944

3 0
2 years ago
Last month it rained 16 out of 30 days. Which ratio is equivalent to the number of days it did NOT rain last month?
nlexa [21]

c, 7:15

Hope this helps! May I please have brainliest? :D

4 0
2 years ago
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Ill give 20 points if you help me out!!
Rasek [7]

Answer:

4 + y = 36

y = 36 - 4

y = 32

3 0
2 years ago
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