All categories

3 years ago

In a sale, normal prices are reduced by 12%

Mathematics

2 answers:

e-lub [12.9K]3 years ago

8 0

$12\%-reduce\\
100\%-12\%=88\%-reduced\ price\\
132.88-88\%\\
x\ \ \ \ \ \ \ -100\%\\\\
x=151$

gulaghasi [49]3 years ago

3 0

132.88/88=1.51
1.51*100=151
the normal price is £151

You might be interested in

suppose the annual rate of inflation is about 4% this means that the cost of an item increases by about 4%. write and evaluate a

Mashcka [7]

Cost = (3,500) * (1.04)^years
Cost = (3,500) * (1.04)^4
Cost = (3,500) * 1.16985856 
Cost = 4,094.50

4 0

3 years ago

Cound someone please help me on this, I'm stuck.

Katyanochek1 [597]

Negative exponents work like this:

$a^{-b}=\dfrac{1}{a^b}$

So, in order to evaluate a negative exponent, you simply have to invert the base, and then raise to the positive equivalent of the exponent.

As an example, here are the first three exercises:

$8^{-3}=\dfrac{1}{8^3}=\dfrac{1}{512}$

$(-4)^{-5}=\dfrac{1}{(-4)^5}=-\dfrac{1}{1024}$

$2k^{-4}=\dfrac{2}{k^4}$

You can work out the rest applying this logic.

5 0

3 years ago

carter has 7,500 in a bank account that earns 3% simple interest per year. how much will be in the account after 5 years

allsm [11]

Answer:

11.25

Step-by-step explanation:

7500 times 0.03 times 5 = 1125

1125 divided 100 = 11.25

simple interest formula = Amount times Rate times Time

Divide 100

8 0

3 years ago

He first draft of the civil rights act was proposed by

maksim [4K]

The first draft of the civil rights act was proposed by 3. John F. Kennedy

7 0

3 years ago

According to the US Bureau of labor statistics, 7% of US female workers between 16 and 24 years old are paid at the minimum wage

vladimir1956 [14]

Answer:

The Null Hypothesis is $H_o:k_o = 0.07$

The alternative hypothesis is $H_a :k_o \ne 0.07$

Decision rule

If the test staistics is greater than the critical value of significance level then $H_o$ is accepted else $H_o$ is rejected

With the above in mind

The critical value of the significance level which is obtained from the table is

$t_{0.05} = 1.645$

Now since the critical value of significance level is greater than the test staistics then the null hypothesis will be rejected

Conclusion

The information is not enough to back the claim that state differs from the nation

Step-by-step explanation:

From the question we are told that

The percentage of US female workers paid at the minimum wage or less is $k_o =$ 7% = 0.07

The sample size is $n = 500$

The number paid minimum wage or less is x = 42

The significance level is $\alpha =$ 5% = 0.05

Now the probability of getting a US female workers paid at the minimum wage or less is mathematically represented as

$\= k = \frac{x}{n}$

substituting value

$\= k = \frac{42}{500}$

$\= k = 0.084$

The Null Hypothesis is $H_o:k_o = 0.07$

The alternative hypothesis is $H_a :k_o \ne 0.07$

Generally the test statistics is mathematically evaluated as

$z = \frac{\= k - k_o}{\sqrt{\frac{k_o(1-k_o)}{n} } }$

substituting value

$z = \frac{0.084 - 0.07}{\sqrt{\frac{0.07 (1-0.07)}{500} } }$

$z = 1.23$

Now the Decision rule is stated as

If the test staistics is greater than the critical value of significance level then $H_o$ is accepted else $H_o$ is rejected

With the above in mind

The critical value of the significance level which is obtained from the table is

$t_{0.05} = 1.645$

Now since the critical value of significance level is greater than the test staistics then the null hypothesis will be rejected

So the conclusion will be

The information is not enough to back the claim that state differs from the nation

4 0

3 years ago