Can someone please help me with this problem?

Answer:

B

Step-by-step explanation:

J = distributive

G = commutative

Answer:

4 x 2 x 1 = 28

Step-by-step explanation:

12

i hope this helped sorry if it's wrong but i wish you luck (i am not good with math)

Answer:

What do you want us to find???

Step-by-step explanation:

Answer

B. 6 feet by 5 feet by 4 feet

C. 7 feet by 6 feet by 4 feet

D.  8 feet by 3 feet by 7 feet

Answer:b c d

Step-by-step explanation:

conformidad

Answer:

The 95% confidence interval for the difference between the proportion of all U.S. teens and adults who use social networking sites is (0.223, 0.297). This means that we are 95% sure that the true difference of the proportion is in this interval, between 0.223 and 0.297.

Step-by-step explanation:

Before building the confidence interval we need to understand the central limit theorem and the subtraction of normal variables.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean [tex]\mu = p[/tex] and standard deviation [tex]s = \sqrt{\frac{p(1-p)}{n}}[/tex]

Subtraction between normal variables:

When two normal variables are subtracted, the mean is the difference of the means, while the standard deviation is the square root of the sum of the variances.

Sample of 800 teens. 73% said that they use social networking sites.

This means that:

[tex]p_T = 0.73, s_T = \sqrt{\frac{0.73*0.27}{800}} = 0.0157[/tex]

Sample of 2253 adults. 47% said that they use social networking sites.

This means that:

[tex]p_A = 0.47,s_A = \sqrt{\frac{0.47*0.53}{2253}} = 0.0105[/tex]

Distribution of the difference:

[tex]p = p_T - p_A = 0.73 - 0.47 = 0.26[/tex]

[tex]s = \sqrt{s_T^2+s_A^2} = \sqrt{0.0157^2+0.0105^2} = 0.019[/tex]

Confidence interval:

Is given by:

[tex]p \pm zs[/tex]

In which

z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].

95% confidence level

So [tex]\alpha = 0.05[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.05}{2} = 0.975[/tex], so [tex]Z = 1.96[/tex].

Lower bound:

[tex]p - 1.96s = 0.26 - 1.96*0.019 = 0.223[/tex]

Upper bound:

[tex]p + 1.96s = 0.26 + 1.96*0.019 = 0.297[/tex]

The 95% confidence interval for the difference between the proportion of all U.S. teens and adults who use social networking sites is (0.223, 0.297). This means that we are 95% sure that the true difference of the proportion is in this interval, between 0.223 and 0.297.

Answer:

Domain of the function 'f' → [tex](-\infty,\infty)[/tex]

Range of the function 'f' → [tex][0,\infty)[/tex]

Step-by-step explanation:

Parent function of an absolute function is,

g(x) = |x|

Domain of the parent function → [tex](-\infty,\infty)[/tex]

Range of the parent function → [tex][0,\infty)[/tex]

If the function 'g' is vertically stretched by a factor of 2, the new function will be,

h(x) = |2x|

Function 'g' is translated by 9 units to the left, then the new function will be,

f(x) = |2x + 9|

By shifting the parent function on x-axis domain of the function will remain same as of the parent function.

Domain of the function 'f' → [tex](-\infty,\infty)[/tex]

Since, there is no shifting along the y-axis therefore, Range of the function will remain the same as the parent.

Range of the function 'f' → [tex][0,\infty)[/tex]

Answer:

10.4 meters

Step-by-step explanation:

3² + 10² = c²

9 + 100 = c²

c² = 109

c = √109 ≈ 10.4

Answer:

468

Step-by-step explanation:

Answer:

468

Step-by-step explanation:

First, we want to break this up into separate pieces, there will be 3 rectangles and 1 square.

each rectangle has a height of 6 and a width of 24. so the area of each rectangle would be 6*24 or 144, then we multiply that by 3 because there are 3 rectangles, when we multiply 144*3 we will get 432.

Now we must solve for the area of the square, on each side, it is 6 cm so we multiply 6*6 so we get 36, that's all we need to do for that now.

to get our final answer we add both answers together so, 432+36 then our final answer is 468 cm

Answer:

By a theorem we learned, i. and ii. are valid under the assump- tion that the sequences (a n)1 n=1and (b n) 1 n=1are convergent. For iii.]

Step-by-step explanation:

Answer:

d

Step-by-step explanation:

final step for induction proof

Answer:

380

Step-by-step explanation:

multiply  20 x 19

Answer:

The answer for -7x + 8 - 4x - 9 is 1. -11x-1

Answer:

10.44

Step-by-step explanation:

Answer: 77 days

Step-by-step explanation:

Answer:

Number of year = 25 year and 7 month (Approx.)

Step-by-step explanation:

Given:

Amount deposit = $200,000

Future amount = $1,000,000

Rate of interest = 6.5%

Find:

Number of year

Computation:

Using compound amount formula;

A = P[1+r]ⁿ

1,000,000 = 200,000[1+6.5%]ⁿ

1,000,000 / 200,000 = [1+6.5%]ⁿ

5 = [1+0.065]ⁿ

n = 25.557

Number of year = 25.557

Number of year = 25 year and 7 month (Approx.)

Answer:

-15625000x^24

Step-by-step explanation:

Answer:

X = 13 ; Y = 16

Median Y > Median X

Battery Y lasts longer and hence better than Battery X.

Step-by-step explanation:

From the box plot, median value is the point marked by the vertical line in between the box located between the whiskers.

Median :

Brand X = 13

Brand Y = 16

This median value depicts that, average battery life of brand X batteries is 13 hours while that of brand Y batteries is 16 hours ; Median value of Y is greater Than median value of X ;

This means Brand Y batteries lasts longer on average than Brand X batteries.

Answer:

No solution, the lines are parallel.

Step-by-step explanation:

Any line can be represented by the equation

y = mx + b

where m is the slope and b is the y intercept.

-3x + 4y = 12

4y = 3x + 12

y = 3/4 x + 3

AND

1/4 x - 1/3 y = 1

- 1/3 y = - 1/4 x + 1

-4y = -3x + 12

4y = 3x - 12

y = 3/4 x - 3

If you get both equations in this form it is evident that the slopes m are the same (parallel) but the y intercept's b are different (not the same line). Therefore no solution.

Answer:

4 ssquare units

Step-by-step explanation:

option 1 is the answer.

Answer:

12

Step-by-step explanation:

2(5+1) =

2(6) =

12

Answer:

32 minutes or .5333 of an hour

Step-by-step explanation:

Answer:

$155

Step-by-step explanation:

If the TV costs $985 and Jasper pays 6 * $190 = 1190 then Jasper pays $1140 - $985 = $155 in interest.

Answer:

155

Step-by-step explanation:

190

×6=1140-985=155

Answer:

G=(-4,5)

G=(2*-4,2*5)

G=(-8,10)

Step-by-step explanation:

Answer:

x = 148

Step-by-step explanation:

vertical angles are congruent

the angle with a measure of 148° and the angle labeled "x" are vertical angles.

Hence, x = 148

Answer:

x=148 because the opposite angles are equal

also, the rest of the smaller angles are both 32 degrees if you need them

you can check because 148+148+32+32=360

hope it helps:)