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
goldfiish [28.3K]
4 years ago
5

I NEED HELP PLEASE!!!!!!!!!!!!!!!!! PLEASE EXPLAIN!!!!

Mathematics
1 answer:
lora16 [44]4 years ago
6 0

Answer:

2

Step-by-step explanation:

\frac{5^{2}-10 }{17-3*4} -1\\\frac{5^{2}-10 }{17-3*4} =3\\\=-3-1\\=2

You might be interested in
A certain smart phone family plan cost $55 per month plus additional usage cost if X is the number cell phone minutes used above
zvonat [6]
I believe it would be c. because it is the only one to have to annual fee of $55.
5 0
3 years ago
A random sample of 12 students used Method A, and their increase in points averaged 46.31, with a sample standard deviation of 6
Kitty [74]

Answer:

The null hypothesis is   H_o  :  \mu_A  - \mu_B  =  0

The alternative hypothesis is  H_a :  \mu_A - \mu_B > 3  

Step-by-step explanation:

From the question we are told that

  The mean of method A is \mu_A =  46.31

  The standard deviation of method A is  \sigma  = 6.44

   The  mean of method B is  \mu_B   =  42.79

   The standard deviation of  method B  is  \sigma_B  =  7.52

An appropriate set of null and alternative hypothesis to determine whether Method A increases students points by more than 3 points is

The null hypothesis is   H_o  :  \mu_A  - \mu_B  =  0

The alternative hypothesis is  H_a :  \mu_A - \mu_B > 3  

6 0
3 years ago
I need help for algebra 2 for simplify form for example (3x-2i)(3x+2i)
grandymaker [24]
Let's start...

(3x-2i)*(3x+2i)

3x*3x+3x*2i-2i*3x-2i*2i

9x^2+6xi-6xi-4i^2

9x^2-4i^2

we don't finish it yet...

i^2=-1

Let's replace it

9x^2-4*(-1)

\boxed{\boxed{9x^2+4}}
6 0
3 years ago
Read 2 more answers
Mary wants to spend no more than $120 for her boat rental. There is a flat fee of $13, and it costs $20 each hour. How many hour
serious [3.7K]

Answer:

5 hours

Step-by-step explanation:

20x+13=120

20 times 5 +13 = 120

113 = 120

she will be left with 7 dollars.

x = amount of hours she can rent the boat.

4 0
3 years ago
When our brains store information, complicated chemical changes take place. In trying to understand these changes, researchers b
Rainbow [258]

Answer:

D) P-045 says that a response this small or smaller would be seen in sample data almost half the time when in fact there is no effect in the entire population of rats. That is, a response this size would often happen just by chance.

Step-by-step explanation:

The P-value represents the probability of getting the test sample results given that the null hypothesis is true.

A P-value that is low enough (smaller than the significance level) gives statistical evidence to support that the null hypothesis is not true.

In this case,  a P-value of 0.45 does not represent a strong evidence against the null hypothesis, as there is 45% of chances of getting this sample results if the null hypothesis is true.

In this case, as we talk about differences ("no difference was seen" between the two groups), we know that the sample difference has not been large enough to be proved statistically significant.

So the right answer is Option d).

8 0
3 years ago
Other questions:
  • John left his home and walked 3 blocks to his school , as shown in the accompanying graph. What is one possible interpretation o
    11·1 answer
  • Devise the exponential growth function that fits the given data, then answer the accompanying question. Be sure to identify the
    9·1 answer
  • A brand of clay brick tiles has the dimensions 3 5 8 by 7 5 8 by 1 2 inch. These thin bricks are commonly used for floors. Estim
    7·1 answer
  • How to solve x=5y for y
    6·1 answer
  • If f(x) = 5x + 4, what is the inverse of f(x)
    14·1 answer
  • How many times greater is the value of the 5 in 150,740 than the value of the 5 in 10,452?
    6·1 answer
  • Bradley decides to include 5 pages of photographs for every 15 pages. Use equivalent ratios to find how many pages of photograph
    12·1 answer
  • 1.
    11·1 answer
  • How do you find a missing angle in a square?
    5·1 answer
  • 16
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!