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frutty [35]
3 years ago
13

What value of x satisfies the equation below? Explain how you know -3x = 15

Mathematics
2 answers:
RoseWind [281]3 years ago
6 0

Answer:

x = -5

Step-by-step explanation:

lisov135 [29]3 years ago
5 0
-3x = 15
————
-3. -3

x= -5
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If babe ruth averaged 46 home runs per year, how many home runs did he hit in 12 years
bixtya [17]

Answer:

He hit 552 home runs in 12 years

Step-by-step explanation:

To solve this problem, we will follow the steps below;

Using proportion;

Let x be the number of home runs he hits in 12 years

46 home runs = 1 year

    x                  = 12

cross -multiply

x × 1  = 46× 12

x =  552 home runs

Therefore, he hit 552 home runs in 12 years

3 0
3 years ago
Read 2 more answers
. The National Sleep Foundation surveyed representative samples of adults in six different countries to ask questions about slee
scoundrel [369]

Answer:

Yes the conclusion in the question  is a reasonable conclusion

Step-by-step explanation:

From the question we are told that

    The sample size is  n_1 = n_2 = n = 250

     The sample mean for USA is  \= x_1 =  391 \ minutes

     The sample mean for Mexico is \= x_2 = 426 \ minutes

     The sample standard deviation for USA is  s_1 =  25 \ minutes

    The sample standard deviation for Mexico is  s_2 =  49 \  minutes

     

The null hypothesis is  H_o  :  \mu_1 = \mu_2

The alternative hypothesis is  H_a  :  \mu_1  < \mu_2

Generally the test statistics is mathematically represented as

        z =  \frac{\= x_1 - \= x_2 }{ \sqrt{ \frac{s_1^2}{n_1} + \frac{s_2^2}{n_2 } } }

=>     z =  \frac{ 391  - 426  }{ \sqrt{ \frac{25^2}{250} + \frac{49^2}{250} } }

=>     z =  -10

From the z table  the area under the normal curve to the left corresponding to   -10  is

    p-value =  P(Z <  -10 ) =  0.00

Generally from the value obtained we see that

  The p-value is  <  \alpha  hence

The decision rule is

Reject the null hypothesis

The conclusion is  

 The is sufficient evidence to conclude that adults in the United States get less sleep on work nights than adults in Mexico

Hence the conclusion in the question is a  reasonable conclusion

6 0
3 years ago
9. Divide 15x^7-45x^5/3x^4<br><br><br> 10. Divide (3x-2)(x-4)-(x-4)(6-5x)/(4-x)(8x-1)
RUDIKE [14]

Answer:

Answer is in picture

Step-by-step explanation:

Hope it is helpful....

6 0
3 years ago
write the equation of a line that is perpendicular to the given line and that passes through the given point. -3x - 6y = 17; (6,
Scorpion4ik [409]

Answer:

Y=2x-9

Step-by-step explanation:

5 0
3 years ago
What’s the correct answer I will mark as brainlist?
Len [333]

Answer:

the answer is d or $90.56

Step-by-step explanation:

ummm math

3 0
3 years ago
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