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
viva [34]
2 years ago
7

An item is regularly priced at $85 it is on sale for 40% off the regular price how much in dollars is discounted from the regula

r price ILL MARK BRAINLEST IF YOU HELP FAST
Mathematics
1 answer:
larisa86 [58]2 years ago
4 0

Answer:

Hi! Your answer would be 34.

Step-by-step explanation:

Okay, so 40% off of $85 would be $51. Subtracting $85 and $51 gives you $34.

You might be interested in
Instructions: Find the measure of the indicated angle
Tanya [424]

Answer:

46 degree

I hope this will help you

7 0
3 years ago
I need the answers for this please
Ilia_Sergeevich [38]

Answer:

A AND B IS TRUE  C IS FALSE

Step-by-step explanation:

6 0
2 years ago
What's the difference between radius and diameter?
Andreas93 [3]
Diameter is from one side of the circle to the other through the middle
and the radius the from the middle to the edge of the circle
so radius is half the diameter
7 0
3 years ago
Read 2 more answers
Length of shawdow of building 32m. The distance from the top to the tip of the shadow is 38m . find the height of the building
nalin [4]

Answer:

20.49 feet to the nearest hundredth.

Step-by-step explanation:

Using the Pythagoras Theorem:

38^2 = h^2 + 32^2

h^2 = 38^2 - 32^2

h^2 = 420

h = √420

h = 20.494 m.

3 0
3 years ago
Read 2 more answers
Toilet Training You are a great friend and are taking your friend's child to the playground to play with two of his friends: Cha
Brilliant_brown [7]

Answer:

Step-by-step explanation:

Hello!

According to a study regarding the average age of female and male kids to complete toilet training is:

Females:

Average age 32.5 months

The standard deviation of 6.7 months

n= 126

Males:

Average age 35.0 months

The standard deviation of 10.1 months

n= 141

The parameter of study is the difference between the age of females are successfully toilet trained and the average age that males are successfully toilet trained. μf - μm (f= female and m= male)

a.

Assuming that both variables have a normal distribution to choose whether you'll use an unpooled or pooled-t to calculate the confidence interval you have to conduct an F-test for variance homogeneity.

If the variances are equal, then you can usee the pooled-t, but if the variances are different, you have to uses Wlche's approach:

H₀: δ²f = δ²m

H₁: δ²f ≠ δ²m

Since both items b. and c. ask for a 95% CI I'll use the complementary significance level for this test:

α: 0.05

F= \frac{S^2_f}{S^2_m} * \frac{xSigma^2_f}{Sigma^2_m} ~~~F_{(n_f-1); (n_m-1)}

F= \frac{(6.7^2)}{(10.1)^2} *1= 0.44

Critical values:

F_{125;140;0.025}= 0.71\\F_{125;140;0.975}= 1.41

The calculated F value is less than the lower critical value, 0.77, so the decision is to reject the null hypothesis. In other words, there is no significant evidence to conclude the population variances of the age kids are toilet trained to be equal. You should use Welch's approach to construct the Confidence Intervals.

Df_w= \frac{(\frac{S^2_f}{n_f} + \frac{S^2_m}{n_m} )^2}{\frac{(\frac{S^2_f}{n_f} )^2}{n_f-1} +\frac{(\frac{S^2_m}{n_m} )^2}{n_m-1} }

Df_w= \frac{(\frac{6.7^2}{126} + \frac{10.1^2_m}{141} )^2}{\frac{(\frac{126^2}{126} )^2}{126-1} +\frac{(\frac{10.1^2}{141} )^2}{141-1} } = 254.32

b.

The given interval is:

[0.3627; 4.6073]

Using Welch's approach, the formula for the CI is:

(X[bar]f- X[bar]m) ± t_{Df_w;1-\alpha /2} * \sqrt{\frac{S^2_f}{n_f} +\frac{S^2_m}{n_m} }

or

(X[bar]m- X[bar]f) ± t_{Df_w;1-\alpha /2} * \sqrt{\frac{S^2_f}{n_f} +\frac{S^2_m}{n_m} }

As you can see either way you calculate the interval, it is centered in the difference between the two sample means, so you can clear the value of that difference by:

(Upper bond - Lower bond)/2= (4.6073-0.3627)/2= 2.1223

The average age for females is 32.5 months and for males, it is 35 months.

Since the difference between the sample means is positive, we can say that the boys were considered "group 1" and the girls were considered "group 2"

You have a95% confidence that the parameter of interest is included in the given confidence interval.

c.

None of the statements is correct, the interval gives you information about the difference between the average age the kids are toilet trained, that is between the expected ages for the entire population of male and female babies.

This represents a guideline but is not necessarily true to all individuals of the population since some male babies can be toilet trained before that is expected as some female babies can be toiled trained after the average value.

I hope it helps!

6 0
3 years ago
Other questions:
  • A line that passes through the point (x,y), with a y intercept of band a slope of m, can be represented by the equation y = mx +
    6·1 answer
  • Geometry:
    13·1 answer
  • Find the product.<br> (x2+6x +9)(x?) -<br> What’s the product
    13·2 answers
  • Amy has completed 21 deliveries so far this week.she needs to make 60 deliveries for the week.what percentage of her deliveries
    5·1 answer
  • The temperature outside is 15 degrees Fahrenheit . If the temperature drops 20 degrees , will the outside temperature be represe
    7·2 answers
  • 25e + -6e_7 =<br> Whats the answer
    6·1 answer
  • Which number line shows how to find 4 and the opposite of 4?
    7·2 answers
  • Am I right if not can you please correct me??
    15·2 answers
  • 2 ^ x - 12/2 ^ x is equal to -4​
    14·1 answer
  • Please help! What does "x" equal?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!