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Alika [10]
3 years ago
6

Determine whether the equation has no solution, one solution, or infinitely many solutions. -2(11-12x)=-4(1-6x)

Mathematics
1 answer:
Irina-Kira [14]3 years ago
4 0

Answer:

no solutions

Step-by-step explanation:

-2(11-12x)=-4(1-6x)

distribute

-22 +24x = -4 +24x

Subtract 24x from each side

-22+24x-24x = -4 +24x -24x

-22 = -4

This is never true, so there are no solutions

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A+B = ?<br>A.257<br>B.267<br>C.524<br>D.526​
SVEN [57.7K]

Answer:

C. 524.

Step-by-step explanation:

a=0.5(251+263)=257;

b=0.5*(263+271)=267;

a+b=257+267=524.

8 0
3 years ago
A swimmer can swim 50.2 meters in 1 minute. How far can he swim in half an hour? *
belka [17]

Answer:

1506meters

Step-by-step explanation:

1hour-60minutes

which means half an hour is 30minutes,so it's more like they are asking you to find how far the swimmer can swim in 30minutes

50.2-1min

x -30min

x=50.2×30

x=1506meters

6 0
3 years ago
Read 2 more answers
2,7, 12, 17, 22, 27, 32, 37, ...<br>f(1) =<br>Common Difference:<br>Explicit Rule:​
ratelena [41]

Answer:

Common difference=5.

8 0
3 years ago
From Statistics and Data Analysis from Elementary to Intermediate by Tamhane and Dunlop, pg 265. A thermostat used in an electri
Leviafan [203]

Answer:

t=\frac{201.77-200}{\frac{2.41}{\sqrt{10}}}=2.32    

The degrees of freedom are given by:

df=n-1=10-1=9  

The p value for this case is given by:

p_v =2*P(t_{(9)}>2.32)=0.0455    

For this case since the p value is lower than the significance level we have enough evidence to reject the null hypothesis and we can conclude that the true mean is significantly different from 200 F.

Step-by-step explanation:

Information given

data: 202.2 203.4 200.5 202.5 206.3 198.0 203.7 200.8 201.3 199.0

We can calculate the sample mean and deviation with the following formulas:

\bar X= \frac{\sum_{i=1}^n X_i}{n}

\sigma=\sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}

\bar X=201.77 represent the sample mean    

s=2.41 represent the sample standard deviation    

n=10 sample size    

\mu_o =200 represent the value that we want to test    

\alpha=0.05 represent the significance level for the hypothesis test.    

t would represent the statistic

p_v represent the p value for the test

Hypothesis to test

We want to determine if the true mean is equal to 200, the system of hypothesis are :    

Null hypothesis:\mu = 200    

Alternative hypothesis:\mu = 200    

The statistic for this case is given by:

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

The statistic is given by:

t=\frac{201.77-200}{\frac{2.41}{\sqrt{10}}}=2.32    

The degrees of freedom are given by:

df=n-1=10-1=9  

The p value for this case is given by:

p_v =2*P(t_{(9)}>2.32)=0.0455    

For this case since the p value is lower than the significance level we have enough evidence to reject the null hypothesis and we can conclude that the true mean is significantly different from 200 F.

4 0
3 years ago
Choose 3 values that would make this inequality true: 8 + y ≥ 11 <br><br> ps help lol
Y_Kistochka [10]
Numbers 3,4,5 make this inequality true

8+3=11

8+4=12

8+5=13
3 0
3 years ago
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