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3 years ago

Solve and graph x-2y>_4

Mathematics

1 answer:

goldfiish [28.3K]3 years ago

6 0

Answer:

hope this helps! (OwO)/

Step-by-step explanation:

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-9(-5k + 3m) + 9m -5(-5m + 9k)

Kisachek [45]

7m -36k
Here’s the answers

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3 years ago

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Emma and her 3 friends were thirsty so she shared 1/2 gallon of lemonade equally among 4 people. How much did each purdon get

S_A_V [24]

Answer:

1/4

Step-by-step explanation:

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3 years ago

Consider the following hypothesis test.H0:μ1−μ2=0 Ha:μ1−μ2≠0The following results are for two independent samples taken from the

Julli [10]

Answer:

a) $z =\frac{104-106}{\sqrt{\frac{8.4^2}{80} +\frac{7.6^2}{70}}}= -1.53$

b) $p_v =2*P(z$

c) Since the p value is higher than the significance level provided we have enogh evidence to FAIL to reject the null hypothesis and we can't conclude that the true means are different at 5% of significance

Step-by-step explanation:

Information given

$\bar X_{1}= 104$ represent the mean for 1

$\bar X_{2}= 106$ represent the mean for 2

$\sigma_{1}= 8.4$ represent the population standard deviation for 1

$\sigma_{2}= 7.6$ represent the population standard deviation for 2

$n_{1}=80$ sample size for the group 1

$n_{2}=70$ sample size for the group 2

z would represent the statistic

Hypothesis to test

We want to check if the two means for this case are equal or not, the system of hypothesis would be:

H0: $\mu_{1}=\mu_{2}$

H1: $\mu_{1} \neq \mu_{2}$

The statistic would be given by:

$z =\frac{\bar X_1-\bar X_2}{\sqrt{\frac{\sigma^2_1^2}{n_1} +\frac{\sigma^2_2^2}{n_2}}}=$ (1)

Part a

Replacing we got:

$z =\frac{104-106}{\sqrt{\frac{8.4^2}{80} +\frac{7.6^2}{70}}}= -1.53$

Part b

The p value would be given by this probability:

$p_v =2*P(z$

Part c

Since the p value is higher than the significance level provided we have enogh evidence to FAIL to reject the null hypothesis and we can't conclude that the true means are different at 5% of significance

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3 years ago

What is -3x+10=4x-20

irga5000 [103]

Answer: 4 2/7

Step-by-step explanation:

There are 2 ways to do this I dont like a negatuve so add 20 over to 10 now we got -3x + 30=4x add 3 over to 4x we now have 30=7x we are left with 30/7. Or u could make it 4 2/7

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3 years ago

Consider the following 8 numbers, where one labelled x is unknown. 24, 4, 1, x , 39, 5, 37, 48 Given that the range of the numbe

densk [106]

Answer:

yes

Step-by-step explanation:

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3 years ago