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aleksandrvk [35]
3 years ago
8

What is the value of x in the equation 4(2x + 10) = 0? −5 −7 5 7

Mathematics
2 answers:
Semenov [28]3 years ago
7 0
4(2x + 10)=0
8x + 40 = 0
8x = -40
x = -5
NeTakaya3 years ago
4 0

Answer:

-5

Step-by-step explanation:

To Solve x we can use the product rule and multiply 4 in the the brackets:

4*(2*x+10)=0

8*x+40=0

We can move the fourty to the right hand side of the equal sign and then simplify the equation by dividing the whole expression by 8:

8*x=-40

x=-40/8=-5

The value of x is -5

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Kim's softball team was playing in the championship game. When there were 444 innings left, the team was losing by a score of 17
lbvjy [14]

Answer:

The inequality is:

6+4p>176+4p>176+ 4p > 17

Kim's team scored a minimum of 3 points per inning.

Step-by-step explanation:

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3 0
3 years ago
A driver's education course compared 1,500 students who had not taken the course with 1,850 students who had. Of those students
aivan3 [116]

Answer:

P-value is less than 0.999995 .

Step-by-step explanation:

We are given that a driver's education course compared 1,500 students who had not taken the course with 1,850 students who had.

Null Hypothesis, H_0 : p_1 = p_2 {means students who took the driver's education course and those who didn't took have same chances to pass the written driver's exam the first time}

Alternate Hypothesis, H_1 : p_1 > p_2 {means students who took the driver's education course were more likely to pass the written driver's exam the first time}

The test statistics used here will be two sample Binomial statistics i.e.;

                             \frac{(\hat p_1 - \hat p_2)-(p_1 - p_2)}{\sqrt{\frac{\hat p_1(1- \hat p_1)}{n_1} + \frac{\hat p_2(1- \hat p_2)}{n_2} } } ~ N(0,1)

Here, \hat p_1 = No. of students passed the exam ÷ No.of Students that had taken the course

 \hat p_1  = \frac{1150}{1850}            Similarly,  \hat p_2 = \frac{1440}{1500}          n_1 = 1,850       n_2 = 1,500

  Test Statistics = \frac{(\frac{1150}{1850} -\frac{1440}{1500})-0}{\sqrt{\frac{\frac{1150}{1850}(1- \frac{1150}{1850})}{1850} + \frac{\frac{1440}{1500}(1- \frac{1440}{1500})}{1500} } } = -27.38

P-value is given by, P(Z > -27.38) = 1 - P(Z > 27.38)

Now, in z table the highest critical value given is 4.4172 which corresponds to the probability value of 0.0005%. Since our test statistics is way higher than this so we can only say that the p-value for an appropriate hypothesis test is less than 0.999995 .

6 0
3 years ago
Olympic pools hold<br> about 660, 334<br> gallons, how<br> many liters is that?
Scrat [10]

Answer:

I think it's 2.5 million liters

Step-by-step explanation:

I asked  my mom. And sister but my sister got a different answer but I took my mom answer.

8 0
2 years ago
Factor 140c + 28 - 14a to identify the equivalent expressions.
Feliz [49]

Answer:

The answer to your question are letters A, C and D.

Step-by-step explanation:

To factor this polynomial we need to look for the common factor of the three terms.

To find it, get the greatest common factor

                        140    28   14     2

                          70    14     7     2

                          35     7     7     5

                            7     7      7     7

                             1     1       1    

Greatest common factor = 2 x 7 = 14  

Factor the polynomial

140c + 28 - 14a = 14 ( 10c + 2 - a)

Factor only 7          7(20c + 4 - 2a)

Factor only 2          2 (70c + 14 - 7a)

8 0
3 years ago
Need help, Due ASAP!
VMariaS [17]

Stop posting on here and do the work yourself I usually don't mind helping people but in some cases, I need to just say do it by yourself look at notes look up the answer there are a million things you can do instead of spam posting all your questions good day

4 0
2 years ago
Read 2 more answers
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