[tex]
7x-4=5x+15 \\
2x=11
x=\boxed{\frac{11}{2}}
[/tex]
Hope this helps.
r3t40
A geometric sequence is shown below:
(blank)a0, -11, 22, (blank)a1, 88, -176.
A) What is the common ratio for this geometric sequence?
(blank)a2
B) What are the missing terms in the geometric sequence shown above?
Answer:
i)
-2
ii)
a0 = 5.5
a1 = -44
Step-by-step explanation:
i)
Given a geometric sequence, the common ratio is the ratio between any two adjacent values. In our case we have the following geometric sequence;
a0, -11, 22, a1, 88, -176
To find the common ratio we can simply divide 22 by -11 or divide -176 by 88;
common ratio = 22/(-11) = -2
ii)
To find a0, we use the common ratio;
(-11)/a0 = -2
a0 = (-11)/(-2)
a0 = 5.5
We do the same for a1;
88/a1 = -2
a1 = 88/(-2)
a1 = -44
Justin and David were comparing text messages. For every 8 messages Justin sent, David sent 12 messages. Together Justin and David have sent 450 messages last month. How many messages did each person send?
Answer:
The number of messages sent by Justin was [tex]180\ messages[/tex]
The number of messages sent by David was [tex]270\ messages[/tex]
Step-by-step explanation:
Let
x-----> number of messages sent by Justin
y----> number of messages sent by David
we know that
[tex]\frac{x}{y}=\frac{8}{12}[/tex]
[tex]x=\frac{8}{12}y[/tex] ----> equation A
[tex]x+y=450[/tex] -----> equation B
substitute equation A in equation B and solve for y
[tex]\frac{8}{12}y+y=450[/tex]
[tex]\frac{20}{12}y=450[/tex]
[tex]y=450*12/20=270\ messages[/tex]
Find the value of x
[tex]x=\frac{8}{12}(270)=180\ messages[/tex]
therefore
The number of messages sent by Justin was [tex]180\ messages[/tex]
The number of messages sent by David was [tex]270\ messages[/tex]
a certain project can be completed by 28 men in 90 days. the numbers of men needed varies inversely to the time needed to complete the project. if the contractor wants to complete the project in 72 days how many men does he have to have working?
A. 30 men
B. 270 men
C. 35 men
D. 28 men
ANSWER
C. 35 men
EXPLANATION
Let m represent the number of men needed and d represent the number of days.
From the question,the number of men needed varies inversely to the time needed to complete the project.
We can write the inverse variation equation.
[tex]m = \frac{k}{d} [/tex]
where k is the constant of variation.
When m=28, d =90.
We substitute these values into the variation equation to determine the value of k.
[tex]28 = \frac{k}{90} [/tex]
[tex]k = 90 \times 28[/tex]
[tex]k = 252[/tex]
Now the equation becomes:
[tex]m= \frac{2520}{d} [/tex]
When d=72,
[tex]m = \frac{2520}{72} [/tex]
[tex]m = 35[/tex]
Therefore he needs to have 35 men working.
choose yes or no to indicate which of the equations can be used to describe the pattern in the table (am i correct??????)
the only equation that seems to describe the pattern is:
[tex]\( b = a - 5 \)[/tex]. Therefore, option C is correct
To determine whether the given equations can describe the pattern in the table, we need to look at the values in the table and see if they satisfy the equations. However, the provided image is not completely clear, and it seems like part of the table or the values might be missing.
From what is visible in the image, it seems we have a table with two columns labeled 'a' and 'b', with 'a' taking on values from 5 to 9 and 'b' from 0 to 4. We need to check if the equations given describe the relationship between 'a' and 'b' according to the table.
The equations given are:
1. [tex]\( b + a = 5 \)[/tex]
2. [tex]\( b = a + 5 \)[/tex]
3. [tex]\( b = a - 5 \)[/tex]
4. [tex]\( a = b - 5 \)[/tex]
Without the complete table, we can't perform a full analysis, but we can explain how you would generally approach this:
- For equation 1 [tex](\( b + a = 5 \))[/tex], check if the sum of each pair of 'a' and 'b' equals 5.
- For equation 2 [tex](\( b = a + 5 \))[/tex], check if 'b' is always 5 more than 'a'.
- For equation 3 [tex](\( b = a - 5 \))[/tex], check if 'b' is always 'a' minus 5.
- For equation 4 [tex](\( a = b - 5 \))[/tex], check if 'a' is always 'b' minus 5.
Given the values for 'a' and 'b' in the table:
a | 5 | 6 | 7 | 8 | 9
b | 0 | 1 | 2 | 3 | 4
We can analyze each equation to see if it describes the pattern in the table.
1. [tex]\( b + a = 5 \)[/tex]
Let's check if the sum of 'a' and 'b' equals 5 for each pair:
- For [tex]\( a = 5 \), \( b = 0 \): \( 5 + 0 = 5 \)[/tex] (True)
- For [tex]\( a = 6 \), \( b = 1 \): \( 6 + 1 = 7 \)[/tex] (False)
- Since it is false for [tex]\( a = 6 \), \( b = 1 \)[/tex], we can already conclude that this equation does not describe the pattern.
2. [tex]\( b = a + 5 \)[/tex]
Let's check if 'b' equals 'a' plus 5:
- For [tex]\( a = 5 \), \( b = 0 \): \( 5 + 5 = 10 \)[/tex] (False)
- Since it is false for [tex]\( a = 5 \), \( b = 0 \)[/tex], this equation does not describe the pattern.
3. [tex]\( b = a - 5 \)[/tex]
Let's check if 'b' equals 'a' minus 5:
- For [tex]\( a = 5 \), \( b = 0 \): \( 5 - 5 = 0 \)[/tex] (True)
- For [tex]\( a = 6 \), \( b = 1 \): \( 6 - 5 = 1 \)[/tex] (True)
- Continuing this pattern, this equation seems to be true for all given pairs of 'a' and 'b'.
4. [tex]\( a = b - 5 \)[/tex]
This is not likely to be true since subtracting 5 from 'b' would result in negative numbers, which are not present in the 'a' values.
From the analysis, the only equation that seems to describe the pattern is:
[tex]\( b = a - 5 \)[/tex]
Let's confirm that this equation is true for all pairs of 'a' and 'b'.
The equation [tex]\( b = a - 5 \)[/tex] holds true for all pairs of 'a' and 'b' values in the table. Therefore, this equation correctly describes the pattern in the table.
What is 1.16, 1 1/4, 1.37, and 1 1/10 from greatest to least?
Answer 1.37, 1 1/4, 1.16, 1 1/10
Step-by-step explanation:
1.37
1 1/4 (1.25)
1.16
1 1/10 (1.1)
Hello There!
-Ordered From Least To Greatest-
1 1/10 - 1.16 - 1 1/4 - 1.37
In the figure, the combined measurement of angles A, E, and K is 127° and angle G measures 90°. What is the measurement of angle B?
A.40°
B.45°
C.53°
D.90°
Answer:
first things first which one is angle B. if would be easier if you labeled them .
Step-by-step explanation:
but any ways see if the image attached can help out
Answer:
b
Step-by-step explanation:
At a large university, 15% of students are business majors and 20% are communications majors. If two students are selected at random, what is the probability the first is a communications major and the second is a business major?
Express your answer in decimal form using two decimal places.
Answer:
Probability the first is a communications major and the second is a business major = 0.03
Step-by-step explanation:
let the total number of students be 100
Event A= Business Majors = 15%
Event B = Communication Majors = 20%
P(A) = [tex]\frac{15}{100}[/tex] ⇒ P(A) = 0.15
P(B) = [tex]\frac{20}{100}[/tex] ⇒ P(B) = 0.2
P( A and B) = P(A) × P(B)
= 0.15 × 0.2
= 0.03
If angle g measures 117º, what is the measure of angle h?
The complete question is given below.
If angle g measures 117º, what is the measure of supplementary angle h?
Angle g and angle h are the Supplementary angles. Then the measure of the angle ∠h will be 63°.
What is an angle?The angle is the distance between the intersecting lines or surfaces. The angle is also expressed in degrees. The angle is 360 degrees for one complete spin.
Supplementary angle - Two angles are said to be supplementary angles if their sum is 180 degrees.
If angle g measures 117º.
Then the measure of angle h will be
We know that angle g and angle h are the Supplementary angles. Then we have
∠g + ∠h = 180°
117° + ∠h = 180°
∠h = 63°
More about the angled link is given below.
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Which integers are opposites
14 and -4
17 and -17
33 and -23
15 and -51
17 and -17. The opposite of a number is usually the negative or positive version of that #
Tabitha transferred a balance of $7800 to a new credit card at the beginning of the year. The card offered an introductory APR of 5.2% for the first 5 months and a standard APR of 33.6% thereafter. If the card compounds interest monthly, what will Tabitha's balance be at the end of the year? Assume that Tabitha will make no payments or new purchases during the year, and ignore any possible late payment fees.)
Answer:
The answer is $9669.65 ≈ $9670.
Step-by-step explanation:
The formula to be used is :
[tex]A=P(1+r)^{nt}[/tex]
For first part :
p = 7800
r = [tex]5.2/100/12=0.00433[/tex]
t = 5
[tex]A=7800(1.00433)^{5}[/tex]
A = $7970.04
For second part:
p = 7970.04
r = [tex]33.6/100/12=0.028[/tex]
t = 7
[tex]A=7970.04(1.028)^{7}[/tex]
A = $9669.65
So, the answer is $9669.65 ≈ $9670.
for 6 days in a row, alyssa recorded the total amount of rain
Answer
if your looking for an answer try to be smart and actually show a picture I cant do nothing with just a name thats how we us experts find answers pictures.
Step-by-step explanation:
3.) The cube of 1-1/3 is.
A) 1-1/9 B) 1-1/27
© 8/27
D) -8/27
Answer:
3*3*3=27
The answer is B 1 1/27
Step-by-step explanation:
As a formula:
volume = s3
where:
s is the length of any edge of the cube.
Read as "s to the power 3"
Which is the better buy?
A. 12-quart container of disinfectant for $44.04
B. 2-gallon container of disinfectant for $23.04
Answer: B
Step-by-step explanation:
There are 4 quarts in a gallon. 12 / 4 = 3.
A contains 3 gallons. B contains 2 gallons. If you divide the price by the number of gallons, b will be cheaper.
Answer:
B.
Step-by-step explanation:
A quart is approximately 1/4 of a gallon. Therefore 8 quarts is 2 gallons. 8/12 is 2/3
2/3 of $44.04 is $29.36. Therefore A is more expensive and B is the better buy.
HELP ASAP! WILL GIVE BRAINLIEST IF YOU GIVE A REASONABLE ANSWER
Maria is comparing the prices of two window cleaning companies. Company A charges $6 per window and an additional $12 as service charges. Company B charges $5 per window and an additional $15 as service charges.
Part A: Write an equation to represent each company's total charges for cleaning a certain number of windows. For both equations (one for Company A and one for Company B), define the variable used.
Part B: Which company would charge less for cleaning 8 windows? Justify your answer.
Part C: How much money is saved by using the services of Company B instead of Company A to clean 6 windows?
Answer:
Step-by-step explanation:
Part A: Company A charges $6 for a window and $12 for a service clean. If you add that up it would be 6 + 12 =18 so company A would be making $18 per customer. Company B charges $15 + $5 for a whole cleaning which would make them $20 per customer. That is better then $18 so business B would be making more money.
Part B: For cleaning 8 windows company B would charge less because 8 x 5 = $40 for all the windows and company A would be charging $6 for a window which is more so 8 x 6 = 48. Company B charges less.
Part C: Company B charges 5 dollars for thier services on windows as Company A charges 6. You would be saving a dollar by buying at company B.
Use the expression below to write an equivalent expression in standard form, and collect like terms.
Show all of the steps in your process.
(1.) 5x + 5 ( x-3y ) + 1/2 (4x - 6y)
The expression 5x + 5 ( x-3y ) + 1/2 (4x - 6y) simplifies to 12x - 18y by distributing the multiplication over addition, combining like terms, and checking the answer for reasonableness.
Explanation:To simplify the algebraic expression 5x + 5 ( x-3y ) + ½ (4x - 6y), let's start by distributing the multiplication over addition for each term inside the parentheses:
Multiply 5 by each term inside the first set of parentheses: 5 × x and 5 × (-3y), which gives us 5x - 15y.
Multiply ½ by each term inside the second set of parentheses: ½ × 4x and ½ × (-6y), resulting in 2x - 3y.
Now, combine the like terms:
The x-terms: 5x + 5x + 2x = 12x.
The y-terms: -15y - 3y = -18y.
So, the expression in standard form is 12x - 18y.
Lastly, we should check the answer to see if it is reasonable:
No like terms are left to combine.
The coefficients are summed up correctly.
The expression is simplified as much as possible.
what is the degree of x^6+4x-3
Answer:
6 hopes this helps
Step-by-step explanation:
The degree of the polynomial [tex]x^{6} + 4x - 3[/tex] is 6 .
What is degree of a polynomial ?The degree of a polynomial is the highest power of the variable in a polynomial expression. For any given polynomial function, the degree refers to the highest power of the dependent variable in the given polynomial.
How to find the degree of the given polynomial function ?For the given polynomial function, f(x) = [tex]x^{6} + 4x - 3[/tex] , we have the dependent variable of the function as x .
Thus, degree of the given polynomial, refers to the highest power of x in the polynomial.
As the highest power of x is 6, thus the degree of the polynomial is also 6.
Therefore, the degree of the polynomial [tex]x^{6} + 4x - 3[/tex] is 6 .
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The figures are similar. Find x.
15/x = 9/4
9x = 60
x = 60/9 = 20/3 = 6.6666
Answer:
20/3
Step-by-step explanation:
9/4=15/x
cross multiply and get:
9x=15x4
9x=60
divide both sides by 9 so
x=60/9 which when reduced is equal to 20/3
How many solutions does the following system of equations have?
y = x - 2
y = - x + 2
one solution
no solutions
two solutions
infinitely many solutions
The following system of equations has only one solution, which is (2,0), because you can use the method of substitution to find the value of x and if it has multiple solutions.
y = x - 2
y = - x + 2
x - 2 = - x + 2
2x = 4
x = 2 (substituting this back into the equation)
y = 2 - 2
y = 0
What is 3 In3-In9 expressed as a single natural logarithim
[tex] 3 \ln 3 - \ln 9 = 3 \ln 3 - \ln 3 ^2 = 3 \ln 3 - 2 \ln 3 = \ln 3[/tex]
Answer: [tex]\ln 3[/tex]
Answer:
ln 3
Step-by-step explanation:
Using the rules of logarithms
• log [tex]x^{n}[/tex] ⇔ n logx
• log x - log y = log ([tex]\frac{x}{y}[/tex] )
Given
3 ln3 - ln9, then
= ln 3³ - ln 9
= ln 27 - ln 9
= ln ([tex]\frac{27}{9}[/tex] ) = ln 3
Which of the following equations describes a relationship of inverse variation between x and y
Answer:
I think its D
Step-by-step explanation:
Forgive me if im wrong.
The perimeter of the rectangle when x = 3 is 22. Which equation can be used to represent the perimeter of the rectangle, P(x)?
P(x) = 2(f ∙ g)(x)
P(x) = (f ∙ g)(x)
P(x) = 2(f + g)(x)
P(x) = (f + g)(x)
Answer:
P(x) = 2(f+g)(x)
Step-by-step explanation:
perimeter of the rectangle = 2( length + width )
if line p is (2x+40)°and line q is (3x-85) what is the value of x
Solve for x: (2x + 40)° = (3x - 85)°. The solution is x = 125.
To find the value of x, you can set the expressions for the angles equal to each other since the two lines are parallel and corresponding angles are equal.
The given angles are:
- Line p: [tex]\(2x + 40\)[/tex] degrees
- Line q: [tex]\(3x - 85\)[/tex] degrees
Set them equal to each other and solve for x:
[tex]\[ 2x + 40 = 3x - 85 \][/tex]
Combine like terms:
[tex]\[ 40 + 85 = 3x - 2x \][/tex]
[tex]\[ 125 = x \][/tex]
So, the value of x is 125 degrees.
The complete question is here:
if line p is (2x+40)°and line q is (3x-85) what is the value of x
The value of ( x ) is [tex]\( 125^\circ \)[/tex].
To find the value of ( x ), we can use the properties of parallel lines cut by a transversal. When two parallel lines are cut by a transversal, alternate interior angles are congruent.
Given:
- Angle [tex]\( 2x + 40^\circ \) and angle \( 3x - 85^\circ \)[/tex] are alternate interior angles.
So, we can set up an equation:
[tex]\[ 2x + 40^\circ = 3x - 85^\circ \][/tex]
Let's solve for ( x ):
[tex]\[ 2x - 3x = -85^\circ - 40^\circ \][/tex]
[tex]\[ -x = -125^\circ \][/tex]
To isolate ( x ), we divide both sides by -1:
[tex]\[ x = \frac{-125^\circ}{-1} \][/tex]
[tex]\[ x = 125^\circ \][/tex]
So, the value of ( x ) is [tex]\( 125^\circ \)[/tex].
complete question given below:
In the diagram, parallel lines P and Q are cut by transversal R.
(2x + 40°
(3x - 85)°
What is the value of x?
8/ 2(2+2)
Trying to prove something
the correct answer would be 16 you add (2+2) first and the do 8/2 then multiple 4 x 4 and you get 16
[tex]\bf 8\div 2(2+2)\implies 8\div 2(\stackrel{\downarrow }{4})\implies \stackrel{\downarrow }{4}(4)\implies 16[/tex]
recall PEMDAS
Parentheses first off
MD multiplication and division from left-to-right.
Someone please help I will mark brainlest!!
Answer:
I would say A, binocular vision. ((Not sure though.))
Step-by-step explanation:
Process of elimination. Opposable thumbs could help, but not as much as being able to spot your prey from far away. And what does singular births and just being a mammal help with being a predator? The answer that makes most sense is A. Hope this helps.
Answer:
I believe binocular vision or opposable thumbs
Step-by-step explanation:
Probably opposable thumbs because it helps predators grab things
NEED HELP ASAP
What is the value of x? Please explain.
Answer:
x=5
Step-by-step explanation:
We can solve this using the Pythagorean theorem
[tex]13^2-12^2=x^2\\\\x=\sqrt{169-144} \\\\x=\sqrt{25} \\\\x=5[/tex]
It should be 5. You would need to use the Pythagorean theorem, a^2 + b^2 = c^2 to find the length of the missing side. So it would be x^2 + 144=169, which leads to 169-144 = 25. Then you would need to get the square root of 25, which is 5. I hope that helps.
Triangle ABC is a right triangle. Which equation could be used to determine the length of side AC?
The answer is d
[tex]x = \sqrt{{20}^{2}-{7}^{2}} [/tex]
The expression x = √(20² - 7²) can be used to determine the side length of side AC option (d) is correct.
What is a right-angle triangle?It is a triangle in which one of the angles is 90 degrees and the other two are sharp angles. The sides of a right-angled triangle are known as the hypotenuse, perpendicular, and base.
We have:
Triangle ABC is a right triangle with sides shown in the figure.
From the Pythagoras theorem:
20² = 7² + x²
x² = 20² - 7²
x = √(20² - 7²)
Thus, the expression x = √(20² - 7²) can be used to determine the side length of side AC option (d) is correct.
Learn more about the right angle triangle here:
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PLEASE HELP!! MATH Will mark Brainlist
Answer:
The area of triangle D'E'F' is four times the area of triangle DEF.
PLEASE ANSWER RIGHT AWAY
Answer:
The sequence 3 , 4 , 6 , 10 , 18 described by the 2nd term is t2 = 4 and recursive definition is tn+1 = 2 tn - 2 ⇒ 4th answer
Step-by-step explanation:
* Lets revise the recursive formula
1. Determine if the sequence is arithmetic (Do you add, or subtract, the
same amount from one term to the next?)
2. Find the common difference. (The number you add or subtract.)
3. Create a recursive formula by stating the first term, and then stating
the formula to be the previous term plus the common difference.
a1 = first term;
an+1= an + d
- Where:
# a1 = the first term in the sequence
# an = the nth term in the sequence
# an+1 = the term after the nth term
# n = the term number
# d = the common difference.
* Now lets solve the problem
∵ The recursive definition is tn+1 = 2 tn - 2 and t2 = 4
- Look to the answer we have three answer with second term = 4,
1st , 2nd and 4th
- Lets find the 1st term
∵ t2 = 2 t1 - 2
∵ t2 = 4
∴ 4 = 2 t1 - 2 ⇒ add 2 to the both sides
∴ 6 = 2 t1 ⇒ divide the two sides by 2
∴ t1 = 3
- We have two answer with first term = 3, 2nd and 4th answers
* Lets find the third term
∵ t3 = 2 t2 - 2
∵ t2 = 4
∴ t3 = 2 (4) - 2 = 8 - 2 = 6
∴ The 4th answer has the third term = 6
* The 4th sequence 3 , 4 , 6 , 10 , 18 described by the 2nd term is
t2 = 4 and recursive definition is tn+1 = 2 tn - 2
what is the degree of the monimal -2
Answer:
The degree is zero
Step-by-step explanation:
we know that
The degree of a constant monomial is always zero
so
In this problem we have
-2
The number -2 represent a constant monomial
therefore
The degree is zero
Solve for the variable x in the following equation. x2 = 100 x =±
Answer:
x = ±10
Step-by-step explanation:
x^2 = 100
Take the square root of each side
sqrt(x^2) = sqrt(100)
x = ±10