Answer:
x = 2
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of EqualityStep-by-step explanation:
Step 1: Define
8 = 2x + 4
Step 2: Solve for x
[Subtraction Property of Equality] Subtract 4 on both sides: 4 = 2x[Division Property of Equality] Divide 2 on both sides: 2 = xRewrite: x = 2You are given data on number of radio ads and sales for a local department store. You had observations for 20 months. The correlation between ads and sales is 0.40. Does this indicate a positive and significant relationship between ads and sales at the 5% level of significance
Answer:
"No" would be the appropriate response. A further explanation is provided below.
Step-by-step explanation:
According to the question,
Number of observations,
n = 20
Significance level,
d = 5%
i.e.,
= 0.05
Calculated correlation,
= 0.40
Critical correlation value will be:
= 0.444
According to the question, we can see that the calculated correlation i.e., "0.40" is far less than the critical correlation value i.e., "0.444". The null hypothesis has always been not rejected. Thus it doesn't indicate the significant relationship.So the above it the right response.
PLEASE HELP. I NEED TO GET THIS RIGHT
Ciro is right
Gerard is wrong
Gunther is also wrong
Equal expression:
1 - 2(40x - 12)
Which of the following applications of undefined terms made use of the concept of point as a location in space?
A RADAR. C laser beam
b tip of needle. D mole o a face
What is the equation that represents the relationship shown in the table?
A rectangular prism has a volume of 240cm. It's height measures 8 cm. What is the area of its base
Answer: Base = 90 [tex]cm^{2}[/tex]
Step-by-step explanation:
Jessica's school bus stop is 60 yards from her house. For a normal school week, how many feet will Jessica walk to and from the bus stop.
Answer:
1,800 feet
Step-by-step explanation:
Assuming that the normal school week is 5 days, she will walk for 5 days to and from. Each day she will walk 120 yards to and from the stop. Multiply that number by 5 and you get your answer of 600 yards. The answer is wanted in feet, so you have to consider yards to feet conversions. 1 yard is three feet. Therefore, you multiply 600 by 3 and you get your answer in feet.
What is the area of the shaded region?
Answer:
17,680 ft²
Step-by-step explanation:
Shaded area = entire shaded rectangle area - unshaded rectangle area - square area
A = 200(100) - 24(30) - 40²
A = 20,000 - 720 - 1600 = 17,680
What is the probability of rolling a 4, 5, or 6 on a die?
Answer:
1/6 chance
Step-by-step explanation:
PLEASE HELP ME AND MY FRIEND WITH THIS PROBLEM!!
Answer:
36 possible outcomes
Step-by-step explanation:
Help ASAP 45 points
Answer:
fd
Step-by-step explanation:
please hepl with this math
Answer:
3,10,17,24
Step-by-step explanation:
An Arithmetic progression or arithmetic sequence is a sequence of numbers such that the difference between the consecutive terms is constant.
3,10,17,24
the difference is 7
How should the decimal point in 52.48 be moved to determine the product 52.48×105 ?
Answer:
2 to the right i belive
how many different ways can officers be appointed
pls answer i beg who answers correct get 100 points
Answer:
y=7p+5e
Step-by-step explanation:
I guess, if that is what you are asking
Answer:
If there 3 slices and 4 slices I would say about near 460 calories or higher
Step-by-step explanation:
What is the next number in the following geometric sequence? *
{1, 3, 9,...}
A 3
B 27
C 2
D 1
Answer:
B. 27 Is the answer
Step-by-step explanation:
hope it helped u
choose yes or no to tell whether each of the following describes a convenience sampling method
In short, we have these answers in this exact order: No, No, Yes, Yes.
Help please, i'll give brainliest for the correct answer!
Answer:
I'm pretty sure it's A.
Step-by-step explanation:
.
Find the value of x and the measure of the missing angle labeled A:
Answer:
below with explaination
Step-by-step explanation:
angle A + angle B + angle C = 180
x+x+37+x+67=180
3x+104=180
3x=180-104
3x=76
x=76÷3
x=25.3
angle A = 62.3
Answer:
104 and 90
Step-by-step explanation:
A six-week fitness program was designed to decrease the time it takes retired individuals to walk one mile. At the beginning of the program, 20 randomly selected retired individuals were invited to participate, and their times to walk a mile were recorded. After the six-week program, their times to walk a mile were again recorded. Most participants saw little to no improvement in their times to walk one mile; however, a few participants saw drastic improvements in their times to walk one mile. The program director would like to perform a hypothesis test to determine if the program reduces the mean time for retired individuals to walk a mile. Which of the following statements is true?
a. Because there are 40 observations in total, the sample size is large enough to assume that the sampling distribution of the sample mean differences is approximately normal.
b. Because the walk times before and after the program are paired, a hypothesis test is not appropriate.
c. The sampling distribution of sample means can be assumed to be approximately normal because the distribution of the sample data is not skewed.
d. Because the sample size of 20 is less than 30 and the improvements in walk times in the sample data appear to be skewed, the distribution of sample means should not be assumed to be approximately normal.
e. Because the program recruited only retired individuals, the distribution of sample means should not be assumed to be approximately normal.
Answer:
c. The sampling distribution of the sample means can be assumed to be approximately normal because the distribution of the sample data is not skewed
Step-by-step explanation:
From the given data, we have;
The category of the sample = Retired individuals
The number of participants in the sample = 20
The duration of program = six-weeks
The improvement seen by most participants = Little to no improvement
The improvement seen by few participants = Drastic improvement
Therefore, given that the participants are randomly selected and the majority of the participants make the same observation of improvement in the time to walk a mile, we have that, the majority of the outcomes show little difference in walk times after the program, therefore, the distribution of the sample data is not skewed and can be assumed to be approximately normal
Find the value of ln(-0.379).
Answer:
Undefined
Step-by-step explanation:
To obtain the In(-0.375)
In x = log e x = y
The In is the natural logarithm of a number
To obtain the natural logarithm value of a given number using a calculator :
Simply press the In button followed by the value to obtain the direct value of the number x.
The In of any negative value gives an error output.
The In of x is only defined for values of x greater Than 0; that is ; X > 0
In of negative numbers is undefined
PLS HELP
Simply the expression by combining like terms.
6x+9+2x+4=
Answer:
Combine like terms: 18x + 15x = 33x
(45 + 33x + 6x2)
Step-by-step explanation:
Answer:
Combine like terms: 18x + 15x = 33x
(45 + 33x + 6x2)
Step-by-step explanation:
IS THIS CORRECT ???????
Answer:
yes
Step-by-step explanation:
Answer:Yep
Step-by-step explanation:
PLS HELP HELP ME WITH a question pls
Step-by-step explanation:
d.
e +e+25=180°{sum of angle of triangle}
2e+25=180°
2e=155
e=155/2
e=77.5°
e.
55°+55°+f=180°{sum of angle of triangle}
f=180-110
f=70°
hope it helps.
pls and this question
Answer:
-4
Step-by-step explanation:
that number cannot be simplified
What is the equation of an exponential function?
1)y=mx+b
2)a=b+c
3)y=a (b)^x
4)y=ax^2+bx+c
Question on imagine
Will give 95 points if answer quickly
Answer:
B its 40cm^2
Step-by-step explanation:
break this odd shape up into two smaller ones like a 5x4 box and a 2x10 rectangle and add those two area together
Answer:
C).
Step-by-step explanation:
find the probability that a randomly selected point within the circle falls in the red shaded area round to the nearest hundredth r = 4 cm 2.5 cm 3 cm 3 cm
Answer:
[tex]p\approx 0.39[/tex]
Step-by-step explanation:
We are given a circle of radius 4 cm, and a triangle inscribed within the circle with a vertical height of 6.5 cm and a base of 6 cm.
To find the probability a randomly selected point lands in the red area, we can divide the red area by the total area.
The area for a circle is given by:
[tex]A=\pi r^2[/tex]
Since the radius is 4 cm, the area of the circle or total area is:
[tex]A=\pi (4)^2=16\pi \text{ cm}^2[/tex]
The area for a triangle is given by:
[tex]\displaystyle A=\frac{1}{2}bh[/tex]
The base of the triangle is 6 cm total and the vertical height is 6.5 cm. Therefore, the area is:
[tex]\displaystyle A=\frac{1}{2}(6)(6.5)=19.5\text{ cm}^2[/tex]
The probability of landing in the red shaded area is:
[tex]\displaystyle p=\frac{\text{Red Region}}{\text{Total Region}}[/tex]
Therefore:
[tex]\displaystyle p=\frac{19.5}{16\pi}\approx 0.39=39\%[/tex]
10 POINTS PLS ANSWER
Answer:
Step-by-step explanation:
FGE is a straight line, and striaght lines measure 180 by definition. Therefore, x, angle BGA, and 55 all add together to equal 180. But notice that x and 55 are both marked with a single swish, meaning they are the same measure. So:
180 - 55 - 55 = x, so
x = 70
Calculator
Enter the unknown value that makes this statement true:
25% of O
is 30.
->
-
1
2
3
Answer:
X = 120
Step-by-step explanation:
here's your solution
=> we need to find the number whose 25%
is 30
=>. now , let the number be X
=> solve for X
=>. 25/100*X = 30
=> X = 30*100/25
=> X = 120
hope it helps
Write the fraction product of a whole number and a unit fraction.
5/12
Answer:
5*1/12
Step-by-step explanation:
I don't know if this is right but hopefully it is ^^"