All categories

3 years ago

Use multiplication to solve the proportion. y/9 = 44/54

Mathematics

2 answers:

drek231 [11]3 years ago

5 0

Answer: $y=7\dfrac{1}{3}$ .

Step-by-step explanation:

$\dfrac{y}{9} =\dfrac{44}{54} \\\\y \times 54=44 \times 9\\\\54y=396\\\\54y \div 54=396 \div 54\\\\y=7\dfrac{1}{3}$

QveST [7]3 years ago

3 0

9•44=396
396/54=7.3 repeating
Therefore y=7.33

You might be interested in

Rufus invest 10,000 in a savings account that pays 3.5 simple interest each year. If Rufus makes no withdrawal or deposits to th

IgorC [24]

Answer:

$1272.28

Step-by-step explanation:

Our equation is

$p*(1+x)^{t}$ , with p being the starting amount, x being the interest rate, and t being the time. Plug our variables in to get

$1000*(1+0.035)^{7}$ = around 1272.28

4 0

3 years ago

Help me in this :( .x/10=200/30

Nina [5.8K]

Answer:

that's my question too ☹️

7 0

3 years ago

Need help please and thanks!

tensa zangetsu [6.8K]

D is your answer.

Hope this helps & good luck. :)

3 0

4 years ago

The population of the United States increased by 27323632 in 2011. What proportion of this change is accounted for by Florida po

tatiyna

Answer:

To the nearest hundredth, this has a value of 0.01

Step-by-step explanation:

To find the proportion of the population change accounted for by Florida population, we just need to divide the population change for Florida by the population change in the entire country;

Mathematically, that will be ;

218929/27323632 = 0.008012441391393

To the nearest hundredth, this represents 0.01

6 0

3 years ago

Commute times in the U.S. are heavily skewed to the right. We select a random sample of 45 people from the 2000 U.S. Census who

Delicious77 [7]

Answer:

The mean commute time in the U.S. is less than half an hour.

Step-by-step explanation:

In this case we need to test whether the mean commute time in the U.S. is less than half an hour.

The information provided is:

$n=45\\\bar x=25.5\\s=19.1\\\alpha =0.05$

(a)

The hypothesis for the test can be defined as follows:

H₀: The mean commute time in the U.S. is not less than half an hour, i.e. μ ≥ 30.

Hₐ: The mean commute time in the U.S. is less than half an hour, i.e. μ < 30.

(b)

As the population standard deviation is not known we will use a t-test for single mean.

Compute the test statistic value as follows:

$t=\frac{\bar x-\mu}{s/\sqrt{n}}=\frac{25.2-30}{19.1/\sqrt{45}}=-1.58$

Thus, the test statistic value is -1.58.

(c)

Compute the p-value of the test as follows:

$p-value=P(t_{(n-1)}$

*Use a t-table.

The p-value of the test is 0.061.

Decision rule:

If the p-value of the test is less than the significance level then the null hypothesis will be rejected and vice-versa.

p-value = 0.061> α = 0.05

The null hypothesis will not be rejected at 5% level of significance.

Thus, concluding that the mean commute time in the U.S. is less than half an hour.

8 0

4 years ago