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Virty [35]
3 years ago
13

PLS HELP I NEED ANSWER ASAP! PPLS BE RIGHT!

Mathematics
2 answers:
seraphim [82]3 years ago
6 0
There Were 6 Vans And 3 Buses.
6 x 13 = 78
3 x 40 = 120
120 + 78 = 198
Luba_88 [7]3 years ago
4 0

Answer:

They used 6 vans and 3 buses

Step-by-step explanation:

x + y= 9

13x + 40y= 198

x= 9 - y

13(9 - y) + 40y= 198

117 - 13y + 40y= 198

27y= 81

y= 3

9-3= 6

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Suppose I claim that the average monthly income of all students at college is at least $2000. Express H0 and H1 using mathematic
pishuonlain [190]

Answer:

For this case we want to test if the the average monthly income of all students at college is at least $2000. Since the alternative hypothesis can't have an equal sign thne the correct system of hypothesis for this case are:

Null hypothesis (H0): \mu \geq 2000

Alternative hypothesis (H1): \mu

And in order to test this hypothesis we can use a one sample t or z test in order to verify if the true mean is at least 200 or no

Step-by-step explanation:

For this case we want to test if the the average monthly income of all students at college is at least $2000. Since the alternative hypothesis can't have an equal sign thne the correct system of hypothesis for this case are:

Null hypothesis (H0): \mu \geq 2000

Alternative hypothesis (H1): \mu

And in order to test this hypothesis we can use a one sample t or z test in order to verify if the true mean is at least 2000 or no

7 0
3 years ago
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ella [17]

Answer:

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Step-by-step explanation:


5 0
3 years ago
Read 2 more answers
What is the y-intercept of this parabola?
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(0,5)

Step-by-step explanation:

5 0
3 years ago
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May somebody help me on this please
Roman55 [17]
I don't fully understand the question. 
7 0
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A number has an absolute value equal to 17 over 8 what is the number?
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