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
Andrei [34K]
3 years ago
11

When I double my number add 4 and then subtract my number and subtract three I get my number plus one what is my number?

Mathematics
1 answer:
Lady bird [3.3K]3 years ago
5 0
2 because once you double it, it becomes 4. Once you add 4, you get 8. When you subtract your number, which is 2, you get 6. Then when you subtract 3, you get 3. 3 is your number (2) plus 1
You might be interested in
Point J(2,-3) is reflected across the x-axis, what are the coordinates of new point?
Mkey [24]

Answer:

(2,3)

Step-by-step explanation:

6 0
3 years ago
Simplify the following expression and justify each step in your simplification. 5(7-x)+6x(3x+4)
Mariulka [41]
35-5x+18x^2+24x 
Simplify:
18x^2+19x+35
8 0
3 years ago
Read 2 more answers
What solid fits snugly through each shape when held in the right position -square, triangle, circle
Nana76 [90]

Answer:

Im pretty sure its circle

7 0
3 years ago
Read 2 more answers
A powder diet is tested on 49 people, and a liquid diet is tested on 36 different people. Of interest is whether the liquid diet
brilliants [131]

Answer:

There is not enough evidence to support the claim that the liquid diet yields a higher mean weight loss than the powder diet (P-value = 0.15).

Step-by-step explanation:

This is a hypothesis test for the difference between populations means.

The claim is that the liquid diet yields a higher mean weight loss than the powder diet.

Then, the null and alternative hypothesis are:

H_0: \mu_1-\mu_2=0\\\\H_a:\mu_1-\mu_2< 0

The significance level is 0.05.

The sample 1 (powder diet group), of size n1=49 has a mean of 42 and a standard deviation of 12.

The sample 2 (liquid diet group), of size n2=36 has a mean of 45 and a standard deviation of 14.

The difference between sample means is Md=-3.

M_d=M_1-M_2=42-45=-3

The estimated standard error of the difference between means is computed using the formula:

s_{M_d}=\sqrt{\dfrac{\sigma_1^2}{n_1}+\dfrac{\sigma_2^2}{n_2}}=\sqrt{\dfrac{12^2}{49}+\dfrac{14^2}{36}}\\\\\\s_{M_d}=\sqrt{2.939+5.444}=\sqrt{8.383}=2.895

Then, we can calculate the t-statistic as:

t=\dfrac{M_d-(\mu_1-\mu_2)}{s_{M_d}}=\dfrac{-3-0}{2.895}=\dfrac{-3}{2.895}=-1.04

The degrees of freedom for this test are:

df=n_1+n_2-1=49+36-2=83

This test is a left-tailed test, with 83 degrees of freedom and t=-1.04, so the P-value for this test is calculated as (using a t-table):

\text{P-value}=P(t

As the P-value (0.15) is greater than the significance level (0.05), the effect is not significant.

The null hypothesis failed to be rejected.

There is not enough evidence to support the claim that the liquid diet yields a higher mean weight loss than the powder diet.

6 0
3 years ago
Read 2 more answers
Joe is making a recipe that calls for 3/4 teaspoon of cinnamon. His only measuring spoon holds 1/8 teaspoon. How many times will
allochka39001 [22]
He will need to fill his measuring cup 8 times
6 0
3 years ago
Other questions:
  • How do i solve 13-4x=1-x
    15·2 answers
  • What is the relationship between the graphs of y = 2x and y = 2-x? reflections over y = x reflections over the y-axis reflection
    10·1 answer
  • Whats the reciprocal of 5\9 ?
    11·2 answers
  • What is 10 times the quoitent of 104 and 8
    8·1 answer
  • What is 9.6 − (−15.1)
    12·2 answers
  • The results of a survey are shown below. in the survey, 12 students said that they would like to learn french.
    8·1 answer
  • If a standard frequency scale is 220 hertz, how many scales is a 1100 hertz frequency?
    9·1 answer
  • A jar has 15 red marbles and 17 yellow marbles
    13·1 answer
  • Help me please I have an hour left
    14·1 answer
  • A new pair of shoes cost $78. They are on sale for $60.06.<br><br> What is the percent of change?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!