1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
pashok25 [27]
3 years ago
10

Sally found a shirt that cost $11.25 if she has a 20% off coupon how much will she save with the coupon

Mathematics
2 answers:
USPshnik [31]3 years ago
7 0

Answer:

she will save $2.25

Vadim26 [7]3 years ago
6 0

Answer:

She will save $2.25. The cost of the shirt will be $9 after the coupon.

Step-by-step explanation:

You might be interested in
Suppose a consumer product researcher wanted to find out whether a highlighter lasted less than the manufacturer's claim that th
11111nata11111 [884]

Answer:

The null hypothesis is H_0: \mu = 14

The alternate hypothesis is H_a: \mu < 14

The test statistic is t = -1.95.

The p-value is of 0.0292. This means that for a level of significance of 0.0292 and higher, there is sufficient evidence to conclude that the  highlighters wrote for less than 14 continuous hours.

Step-by-step explanation:

Suppose a consumer product researcher wanted to find out whether a highlighter lasted less than the manufacturer's claim that their highlighters could write continuously for 14 hours.

At the null hypothesis, we test if the mean is 14 hours, that is:

H_0: \mu = 14

At the alternate hypothesis, we test if the mean is less than 14 hours, that is:

H_a: \mu < 14

The test statistic is:

t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, s is the standard deviation of the sample and n is the size of the sample.

14 is tested at the null hypothesis:

This means that \mu = 14

X = 13.6 hours, s = 1.3 hours. Sample of 40:

In addition to the values of X and s given, we have that n = 40

Test statistic:

t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}

t = \frac{13.6 - 14}{\frac{1.3}{\sqrt{40}}}

t = -1.95

The test statistic is t = -1.95.

P-value:

The p-value of the test is the probability of finding a sample mean lower than 13.6, which is a left tailed test, with t = -1.95 and 40 - 1 = 39 degrees of freedom.

Using a calculator, the p-value is of 0.0292. This means that for a level of significance of 0.0292 and higher, there is sufficient evidence to conclude that the  highlighters wrote for less than 14 continuous hours.

5 0
2 years ago
105 is 150% of what number
zhannawk [14.2K]

Answer:

105 is 150% of 70.

Step-by-step explanation:


8 0
2 years ago
1
Kazeer [188]

Answer:

h = A*2/a+b

Step-by-step explanation:

5 0
2 years ago
Find θ, 0° ≤ θ &lt; 360°, given the following information.
ludmilkaskok [199]

Answer:

210°

Step-by-step explanation:

Given

sinΘ = - \frac{1}{2}

Note taken the inverse sine of the positive value of the ratio, gives the related acute angle, that is

Θ = sin^{-1}(\frac{1}{2} ) = 30° ← related acute angle

Thus the required angle in the third quadrant is

Θ = 180° + 30° = 210°

3 0
3 years ago
If x= sin theta then x/√1-x^2 is​
SCORPION-xisa [38]

Well,

Given that x=\sin(\theta),

We can rewrite the equation like,

\dfrac{\sin(\theta)}{\sqrt{1-\sin(\theta)^2}}

Now use, \cos(\theta)^2+\sin(\theta)^2=1 which implies that 1-\sin(\theta)^2=\cos(\theta)^2

That means that,

\dfrac{\sin(\theta)}{\sqrt{1-\sin(\theta)^2}}\Longleftrightarrow\dfrac{\sin(\theta)}{\sqrt{\cos(\theta)^2}}

By def \sqrt{x^2}=x therefore \sqrt{\cos(\theta)^2}=\cos(\theta)

So the fraction now looks like,

\dfrac{\sin(\theta)}{\cos(\theta)}

Which is equal to the identity,

\boxed{\tan(\theta)}=\dfrac{\sin(\theta)}{\cos(\theta)}

Hope this helps.

r3t40

6 0
3 years ago
Other questions:
  • Hey:) can you please help me posted picture of question
    8·2 answers
  • Solve the equation 2/5x - 1 = 9. Complete the solution and check your solution.
    7·1 answer
  • If (x+2) is a factor of x^3-6x^2+kx+10, k=
    5·1 answer
  • On 12 (1 point)<br> Given f(x) = 6(1 – x), what is the value of f(-8)?
    6·1 answer
  • john has earnes a 77, 76 and a 84 on his first three projects of the semester.if he hopes to have a b average (80 or above) what
    12·1 answer
  • Hey want help me??!! ill mark you as brainn!!pleasee!
    6·1 answer
  • A triangle has vertices A(-6,3), B(1,5), and C(4,-4). this triangle is dilated with the origin at its center by a scale factor o
    7·1 answer
  • 2. The standard dose of medicine for a dog is 10 grams for every 15
    14·1 answer
  • WILL GIVE BRAINLIEST
    8·1 answer
  • After you find the solution, how would you check to make sure your answer is correct?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!