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Katyanochek1 [597]
2 years ago
12

ABCD is a parallelogram. solve for x a) 2 b)22 c)24 d)48

Mathematics
1 answer:
Brilliant_brown [7]2 years ago
4 0

Answer:

b) 22

Step-by-step explanation:

180 = (4x+12) + (3x+14)

180 = 7x + 26

7x = 154

x=22

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The sum of 4 consecutive integers is 326. What is the second number in this sequence?
Fynjy0 [20]

Answer:

x + (x+1) + (x +2) + (x +3) = 326

4x + 6 = 326

4x = 320

x = 80

The second number would be 81


Step-by-step explanation:


5 0
3 years ago
It took a car 4 days to travel 4717 miles. What was this car’s average speed, in miles per hour? (Round to the nearest per hour)
KiRa [710]

Answer:

51 MPH

Step-by-step explanation:

4 days is 96 hours, all you have to do is 4717/90

which is 51.41111 (with the 1 repeating) rounded to the nearest MPH (Nearest whole number) is 51

4 0
2 years ago
sweet t has 2 orange picks for every 5 green. I f there are 21 picks in all, how many picks are orange?
weeeeeb [17]
If there are 21 picks, 6 are orange
8 0
3 years ago
Read 2 more answers
An engineer has designed a valve that will regulate water pressure on an automobile engine. The valve was tested on 180180 engin
tiny-mole [99]

Answer:

z=\frac{4.6-4.8}{\frac{0.9}{\sqrt{180}}}=-2.98    

p_v =P(Z  

If we compare the p value and the significance level given \alpha=0.1 we see that p_v so we can conclude that we have enough evidence to reject the null hypothesis,and we have enough evidence to conclude that the true mean is significantly lower thn 4.8 at 10% of signficance.  

Step-by-step explanation:

Data given and notation  

\bar X=4.6 represent the sample mean

\sigma=0.9 represent the population standard deviation

n=180 sample size  

\mu_o =4.8 represent the value that we want to test

\alpha=0.1 represent the significance level for the hypothesis test.

z would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if thetrue mean is below the specifications, the system of hypothesis would be:  

Null hypothesis:\mu \geq 4.8  

Alternative hypothesis:\mu < 4.8  

If we analyze the size for the sample is > 30 and we know the population deviation so is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:  

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}}  (1)  

z-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".  

Calculate the statistic

We can replace in formula (1) the info given like this:  

z=\frac{4.6-4.8}{\frac{0.9}{\sqrt{180}}}=-2.98    

P-value

Since is a one sided test the p value would be:  

p_v =P(Z  

Conclusion  

If we compare the p value and the significance level given \alpha=0.1 we see that p_v so we can conclude that we have enough evidence to reject the null hypothesis,and we have enough evidence to conclude that the true mean is significantly lower thn 4.8 at 10% of signficance.  

4 0
3 years ago
please help me with it and dont just put random letters cause i dont know why u do it its not like u can buy a house with these
BartSMP [9]

Answer:

v=432cm

sA=144cm

Step-by-step explanation:

1)))

v=w*d*h

v=3*9*16

v=432cm

2)))

sA=h*w

sA=16*9

sA=144cm

6 0
2 years ago
Read 2 more answers
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