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
5

A group of friends wants to go to the amusement park. They have no more than $245

Mathematics
2 answers:
anzhelika [568]2 years ago
4 0
245 ≤ 9.25 + 25.75p

p= number of people

since there’s no more than $245, they can only spend the exact amount or less than which is why ≤ (less than or equal) to is used.

hope this helps :)
Finger [1]2 years ago
3 0

Answer:

9.25 + 25.75p ≤ 245

Step-by-step explanation:

I didn't see any inequality options to select from . . .

You might be interested in
What is the volume of the triangular prism?
nekit [7.7K]
12 if not just look it up on quiz lit and you’ll get it it’s on safari or use scan and solve
3 0
2 years ago
Read 2 more answers
ANSWER QUICK. I NEED ANSWER IN 5 min!!!​
scoray [572]

Answer:

hey hot stuff

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
A survey collected data on annual credit card charges in seven different categories of expenditures: transportation, groceries,
Andru [333]

Answer:

A. Null and alternative hypothesis:

H_0: \mu_d=0\\\\H_a:\mu_d\neq 0

B. Yes. At a significance level of 0.05, there is enough evidence to support the claim that there is signficant difference between the population mean credit card charges for groceries and the population mean credit card charges for dining out.

P-value = 0.00002

C. As the difference is calculated as (population 1 − population 2), being population 1: groceries and population 2: dinning out, and knowing there is evidence that the true mean difference is positive, we can say that the groceries annual credit card charge is higher than dinning out annual credit card charge.

The point estimate is the sample mean difference d=$840.

The 95% confidence interval for the mean difference between the population means is (490, 1190).

Step-by-step explanation:

This is a hypothesis test for the population mean.

The claim is that there is signficant difference between the population mean credit card charges for groceries and the population mean credit card charges for dining out.

Then, the null and alternative hypothesis are:

H_0: \mu_d=0\\\\H_a:\mu_d\neq 0

The significance level is 0.05.

The sample has a size n=42.

The sample mean is M=840.

As the standard deviation of the population is not known, we estimate it with the sample standard deviation, that has a value of s=1123.

The estimated standard error of the mean is computed using the formula:

s_M=\dfrac{s}{\sqrt{n}}=\dfrac{1123}{\sqrt{42}}=173.2827

Then, we can calculate the t-statistic as:

t=\dfrac{M-\mu}{s/\sqrt{n}}=\dfrac{840-0}{173.2827}=\dfrac{840}{173.2827}=4.848

The degrees of freedom for this sample size are:

df=n-1=42-1=41

This test is a two-tailed test, with 41 degrees of freedom and t=4.848, so the P-value for this test is calculated as (using a t-table):

\text{P-value}=2\cdot P(t>4.848)=0.00002

As the P-value (0.00002) is smaller than the significance level (0.05), the effect is significant.

The null hypothesis is rejected.

At a significance level of 0.05, there is enough evidence to support the claim that there is signficant difference between the population mean credit card charges for groceries and the population mean credit card charges for dining out.

We have to calculate a 95% confidence interval for the mean difference.

The t-value for a 95% confidence interval and 41 degrees of freedom is t=2.02.

The margin of error (MOE) can be calculated as:

MOE=t\cdot s_M=2.02 \cdot 173.283=350

Then, the lower and upper bounds of the confidence interval are:

LL=M-t \cdot s_M = 840-350=490\\\\UL=M+t \cdot s_M = 840+350=1190

The 95% confidence interval for the mean difference is (490, 1190).

7 0
2 years ago
Which of the following expressions could be used to represent "the difference between -12 and 10"?
pshichka [43]

Answer:

-2

Step-by-step explanation:

I took the test :)

3 0
2 years ago
Read 2 more answers
52,680,000,000,000 in scientific notation
Vedmedyk [2.9K]
5.268 • 10 to the power of 13

( the decimal point would have to move 14 times to the left)
6 0
3 years ago
Other questions:
  • Now write the number is standard form ?
    11·2 answers
  • Help please I have know idea
    5·2 answers
  • Inverse of g(x) 2x+3
    7·1 answer
  • Will you help me on both
    9·1 answer
  • Sandra calculated the height of a cylinder that has a volume of 576 pi cubic centimeters and a radius of 8 centimeters. Her work
    12·1 answer
  • Pls do it for 40points
    8·1 answer
  • Need assistance explain please
    12·1 answer
  • 257 sci cu grau si 97 saci cu porumb cantaresc 14.480,iar 349 saci cu grau si 97 saci cu porumb cantaresc 18.344 kg.Sa se afle c
    8·1 answer
  • What is the value of x? How do you set up to solve?
    5·2 answers
  • Plz help me 1 will give 30 points and brainly and 5 stars and like
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!