HEELLLPPP ME?!?!?!? ANYONE?
Solve the system of equations and choose the correct ordered pair.
3x + 2y = 12
6x + 3y = 21
A. (4, 3)
B. (4, 0)
C. (2, 3)
D. (3, 2)
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Related Questions
Factors of 14 least to greatest
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hope this helps you
simplify the ratio
60 cents: $2
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30: 1
1: 1/30
The ratio 60 cents: $2 simplifies to 3:10 after converting dollars to cents and dividing both terms by the greatest common divisor, which is 20.
To simplify the ratio 60 cents: $2, we need to first express both quantities in the same units. Since 1 dollar is equal to 100 cents, $2 is equivalent to 200 cents. Thus, the ratio becomes 60 cents : 200 cents.
Next, we simplify the ratio by dividing both sides by the greatest common divisor. In this case, both 60 and 200 are divisible by 20, which is the greatest common divisor. So we divide both sides by 20:
[tex]\frac{60}{20}[/tex] = 3
[tex]\frac{200}{20}[/tex] = 10
Therefore, the simplified ratio is 3:10.
Use the prime factoriations of 24 and 28 to find their greatest common factor
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for 24--- 2,2,2,3
for 28---2,2,7
so common 2*2=4
During a 52 week period, a company paid overtime wages for 19 weeks and hired temp help for 11 weeks. During 5 weeks, the company paid overtime AND hired temp help. If an auditor randomly examined the payroll for only one week, whats the probability that the payroll for that week contained overtime wages or temp help wages? ...?
Answers
P(temp help wage) = 11/52 + 5/52 = 16/52
P(overtime or temp help) = P(overtime) + P(temp help)
= 24/52 + 16/52
= 40/52 = 10/13
The probability that the payroll for one week contained overtime wages or temporary help is [tex]\boxed{\frac{10}{13}}[/tex].
Further explanation:
It is given that during a [tex]52[/tex] week period, a company paid overtime wages for [tex]19[/tex] weeks and hired temporary help for [tex]11[/tex] weeks.
During [tex]5[/tex] weeks, the company paid overtime and hired temporary help.
Calculation:
A company paid overtime wages for [tex]19[/tex] weeks and [tex]5[/tex] weeks during the [tex]52[/tex] week period.
Therefore, the probability of overtime wages [tex]P(O)[/tex] is calculated as follows:
[tex]\begin{aligned}P(O)&=\dfrac{19}{52}+\dfrac{5}{52}\\&=\dfrac{19+5}{52}\\&=\dfrac{24}{52}\end{aligned}[/tex]
The probability of overtime wages is [tex]\frac{24}{52}[/tex].
The same company hired temporary help for [tex]11[/tex] weeks and [tex]5[/tex] weeks during the [tex]52[/tex] week period.
Therefore, the probability of temporary help [tex]P(H)[/tex] is calculated as follows:
[tex]\begin{aligned}P(H)&=\dfrac{11}{52}+\dfrac{5}{52}\\&=\dfrac{11+5}{52}\\&=\dfrac{16}{52}\end{aligned}[/tex]
The probability of temporary help is [tex]\frac{16}{52}[/tex].
Now, the combined probability [tex]P[/tex] that the payroll for one week contained overtime wages or temporary help is calculated by adding the probabilities of overtime wages and temporary help as follows:
[tex]\begin{aligned}P&=\dfrac{24}{52}+\dfrac{16}{52}\\&=\dfrac{24+16}{52}\\&=\dfrac{40}{52}\\&=\dfrac{10}{13}\end{aligned}[/tex]
The probability that the payroll for one week contained overtime wages or temporary help is [tex]\boxed{\dfrac{10}{13}}[/tex].
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Answer details:
Grade: Middle school
Subject: Mathematics
Chapter: Probability
Keywords: Probability, events, outcome, sample, experiment, equally likely, random, complementary events, joint probability, independent events, mutually exclusive events, conditional probability.
Verify the identity.
tan(x+(pi/2)) = -cot x
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Juan charges $3.50 per hour for babysitting. Write a rule to describe the amount of money (M) earned is a function of the number of hours (h) spent baby-sitting. HELP PLEASE
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Solve log11 (y + 8) + log11 4 = log11 60. what is y?
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Answer:
The value of y is 7.
Step-by-step explanation:
The given equation is
[tex]log_{11}(y+8)+log_{11}4=log_{11}60[/tex]
[tex]log_{11}[(y+8)4]=log_{11}60[/tex] [tex][\because log_ax+log_ay=log_axy][/tex]
[tex]log_{11}(4y+32)=log_{11}60[/tex]
Equating both sides.
[tex]4y+32=60[/tex]
[tex]4y=60-32[/tex]
[tex]4y=28[/tex]
Divide both sides by 4.
[tex]y=7[/tex]
Therefore the value of y is 7.
What is 110.079 to the nearest hunderdths?
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hope this is what youre looking for
Identify the expression as a numerical expression or a variable expression. For a variable expression, name the variable.
1 × 12
A. numerical expression
B. variable expression; a is the variable.
C. variable expression; there is no variable.
D. variable expression; l is the variable.
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The expression above is an example of a numerical expression.
I hope my answer has come to your help. God bless and have a nice day ahead!
Tim is buying packages of paper plates and cups. He wants to have equal amounts of each, but plates come 24 per pack, and cups come 16 per pack. What is the least amount of plates and cups Tim will have to buy to get the same number of each?
8
16
24
48
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Note, if gcd (24,16)=1 then lcm (24,16)=24*16
At first public inquiry showed there were 637000 women motorcyclists in the US up from 437000 just 8 years ago before it. Find the percent of increase in the number of women motorcyclists during these 8 years
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The percent of increase in the number of women motorcyclists over the 8-year period is approximately 45.77%, calculated by finding the difference between the final and initial number of motorcyclists, dividing by the initial number, and converting the ratio to a percentage.
Explanation:To calculate the percent of increase in the number of women motorcyclists over the 8-year period provided, follow these steps:
Determine the initial and final values. Initial value: 437,000; Final value: 637,000.
Calculate the increase by subtracting the initial value from the final value: 637,000 - 437,000 = 200,000.
Divide the increase by the initial value to find the increase ratio: 200,000 / 437,000 ≈ 0.4577.
Multiply the increase ratio by 100 to convert it to a percentage: 0.4577 * 100 ≈ 45.77%.
Therefore, the percent of increase in the number of women motorcyclists during these 8 years is approximately 45.77%.
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Can anyone show me steps on how to solve this equation.. I will upvote!
5x+7=4x+10
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Bobby will buy coffe and hot chocolate for his co-workers each cup of coffe costs $2.25 and each cup of hot chocolate costs $1.50 .he pays a total of $15.75 for 8 cups
( please answer me as quickly as possible)
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and he buys 5 cups of coffe cause 2.25*5=11.25
and 11.25 + 4.50=15.75
Final answer:
Bobby can buy 5 cups of coffee at $2.25 each and 3 cups of hot chocolate at $1.50 each to meet his budget of $15.75 for 8 cups in total. We find this by solving a system of equations.
Explanation:
Bobby wants to buy a total of 8 cups of coffee and hot chocolate for his co-workers with a budget of $15.75. Since each cup of coffee costs $2.25 and each cup of hot chocolate costs $1.50, we need to find out how many cups of each he can buy.
Let's denote the number of cups of coffee as C and the number of cups of hot chocolate as H.
The total cost for coffee will be $2.25 × C and for hot chocolate $1.50 × H.
The total amount spent is $15.75, and the total number of cups is 8, so we have two equations: 2.25C + 1.50H = 15.75 and C + H = 8.
We can solve this system of equations using substitution or elimination. For simplicity, we'll use substitution.
From C + H = 8, we can express H in terms of C: H = 8 - C.
Substitute H in the cost equation: 2.25C + 1.50(8 - C) = 15.75.
Simplify and solve for C: 2.25C + 12 - 1.50C = 15.75, which simplifies to 0.75C = 3.75, and therefore C = 5.
Now, plug C = 5 into H = 8 - C to find H: H = 3.
Bobby can buy 5 cups of coffee and 3 cups of hot chocolate.
!!!!!!!!!!!!!!!!!!!!!!HELP ASAP!!!!!!!!!!!!!!!!!!!!
Jayden used the following steps to simplify the given expression.
-3 + 2(2 + x + 3)
Step 1: = -3 + 2(x + 2 + 3)
Step 2: = -3 + 2(x + 5)
Step 3: = -3 + 2x + 10
Step 4: = 2x + (-3) + 10
Step 5: = 2x + 7
What property of real numbers was used in step 3?
A)distributive property
B)associative property of addition
C)commutative property of addition
D)associative property of multiplication
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Answer:
Option A -distributive property
Step-by-step explanation:
Given : expression -3 + 2(2 + x + 3)
Step 1: = -3 + 2(x + 2 + 3)
Step 2: = -3 + 2(x + 5)
Step 3: = -3 + 2x + 10
Step 4: = 2x + (-3) + 10
Step 5: = 2x + 7
In step 3 distributive property is applied i.e. c(a+b)=ca+cb
in step 2- 2(x+5) when we apply distributive property it became
2x+10
Therefore, option A is correct
Which mathematical property is demonstrated?
5 + 3w + 2 = 5 + 2 + 3w
associative property of addition
commutative property of multiplication
associative property of multiplication
commutative property of addition
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Answer:
commutative property of addition
Step-by-step explanation:
Solve (x + 2 < 5) (x - 7 > -6).
Please help
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==========================================================
x+2<5
x<5-2
x<3
==========================================================
x-7>-6
x>-6+7
x>1
==========================================================
A number n is at least 7
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The inequality would be equal to n ≥ 7.
What is a solution set to an inequality or an equation?If the equation or inequality contains variable terms, then there might be some values of those variables for which that equation or inequality might be true. Such values are called solution to that equation or inequality. Set of such values is called solution set to the considered equation or inequality.
We are given that the phrase as;
"A number n is at least 7"
Therefore, the inequality would be;
n ≥ 7
Or
n = 7
Thus, the inequality would be equal to n ≥ 7.
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Use one transformation to solve n-4.6=2.98
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x^2-14x-4=0, solve by completing the square
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The general quadratic equation is: ax² + bx + c = 0.
But, by completing the square we turn it into: a(x + d)² + e = 0, where:
d = b/2a
e = c - b²/4a
Our quadratic equation is x² - 14x -4 = 0, which is after rearrangement:
So, a = 1, b = -14, c = -4
Let's first calculate d and e:
d = b/2a = -14/2*1 = -14/2 = -7
e = c - b²/4a = -4 - (-14)²/4*1 = -4 - 196/4 = -4 - 49 = -53
By completing the square we have:
a(x + d)² + e = 0
1(x + (-7))² + (-53) = 0
(x - 7)² - 53 = 0
(x - 7)² = 53
x - 7 = +/-√53
x = 7 +/- √53
Therefore, the solutions are:
x = 7 - √53
or
x = 7 + √53
The solution of the equation found by completing the square are;
x = 7 - √(53) and 7 + √(53)
What is the completing the square method?Completing the square method involves writing the quadratic expression of the form a·x² + b·x + c as (x + d)² + e, where d and e are constants.
Moving the constant to one side of the equation, we get;
x² - 14·x = 4
We complete the square on the left side of the equation by adding and subtracting the square of the half the coefficient of x term inside the parenthesis. Therefore, we add and subtract (-14/2)² = 49, as follows;
(x² - 14·x + 49) - 49 = 4
Therefore; (x - 7)² - 49 = 4
The -49 is moved to the right side of the equation to get;
(x - 7)² = 4 + 49 = 53
Taking the square root of both sides, we get;
x - 7 = ± √(53)
Therefore; x = 7 ± √(53)
The solution is; x = 7 + √(53) and 7 - √(53)
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what number is 82% of 230
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188.6 is the answer
Maple Grove wants to include two types of maple trees, the namesake of the city,for their parks.Two varieties of maple trees have been selected.One variety costs $80 per tree; the other more colorful variety costs $85 per tree. The tree budget must not exceed $75,000. Citizens want more of the colorful $85 trees than the others if possible.
Let x be the number of $80 trees and y the number of $85 trees. Which system of inequalities represents the situation?
Options:
80x+85y>= 75,000 x<=y
80x+85y>=75,000 x>=y
80x+85y<=75,000 x>=y
80x+85y<=75,000 x<=y ...?
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A rectangle has a length of x inches and a width 2 inches less than the length. If the dimensions were tripled what would be the area of the new rectangle in terms o x
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length = x
width = x-2
since the width is 2 inches smaller than the length
now let's triple each dimension. Multiply the expressions by 3 to get
new length = 3*x
new width = 3*(x-2) = 3x-6
Now onto the area
area = (length)*(width)
area = (3x)*(3x-6)
area = 3x*3x-3x*6
area = 9x^2 - 18x
So the new larger rectangle has area of 9x^2-18x
A kite, flying 50 feet high in the air is attached by a string to a stake in the sand. How long is the string to the nearest tenth of a foot?
a) 50.0 feet
b) 70.7 feet
c) 86.6 feet
d) 100.0 feet ...?
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Answer:
the answer is b) 70.7 feet
Step-by-step explanation:
thank you for amazing answers on the board.
Which of the following relations are functions?
A. {(a,b),(b,a),(c,c),(e,d)}
B. {(c,e),(c,d),(c,b)}
C. {(b,b),(c,d),(d,c),(c,a)}
D. {(a,b),(b,c),(c,d),(d,e)}
Answers
{(b,b),(c,d),(d,c),(c,a)} is NOT a function either. The input 'c' corresponds to the output 'd' and 'a' at the same time. So choice C is out too
Choices A and D are the answer. They are functions since any given input corresponds to exactly one output.
1. The figure attached is a regular octagon with radii and an apothem drawn. What is the measure of angle 1?
A. 22.5 degrees
B. 45 degrees
C. 60 degrees
D. 67.5 degrees
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Angle 1 = 360/8 = 45°
What is the value of the sum 5 + 10 + 15 + ... + 95 + 100? ...?
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=5(1+2+3+..+20)
=5{ 20(20+1)/2} [sum of n natural numbers =n(n+1)/2
=5{210}
=1050
Using this formula: Sum to n = (n(n+1))/2
So, for you n = 100
Therefore, (100x101)/2 = 5050 keep this as value 'x'
Second, the numbers divisible by 5.
Numbers divisible by 5 from 1 to a 100 are:
5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95 and 100
Add all these up = 1050 remember this as value 'y'
Now, minus x from y which is 5050 - 1050 = 4000
Hope this helps.
Simplify the expression using the properties of exponents. Expand any numerical portion of your answer and only include positive exponents. ( 4 x 3 y −2 ) 3 (4x3y-2)3
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Yen calculates the product 5/8 times 24/25. before he multiples he
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it just BODMAS rule f u kno t (brackets of division multiplication addition and subtraction one comes before the other
Answer:
[tex]\frac{1}{1} \times \frac{3}{5}[/tex]
Step-by-step explanation:
The complete question is
Yen calculates the product 5/8 x 24/25. before he multiplies, he simplifies all the factors. what does the problem look like after he simplifies the factors?
The given product is
[tex]\frac{5}{8} \times \frac{24}{25}[/tex]
Then, Yen simplifies and the problem looks like
[tex]\frac{1}{1} \times \frac{3}{5}[/tex]
Because, we simplified 5 with 25 and 8 with 24.
Therefore, the result of the product is
[tex]\frac{3}{5}[/tex]
Given that f(x) = 3x + 1 and g(x) = the quantity of 4x plus 2
divided by 3, solve for g(f(0)).
2
6
8
9
Answers
(4(3x+1)+2)/3 = (12x+4+2)/3 replace now x by 0 and solve
(12*0+6)/3 = 6/3 = 2
So the answer is 2
The amount of weight that Sam loses is directly proportional to the number of hours he spends exercising. If Sam loses a pound of weight for each 3 hrs of exercise, how many hours must he spend exercising to lose 25 lbs?
A) 25 hrs
B) 50 hrs
C) 75 hrs
D) 80 hrs
Answers
Answer:
The answer is C. 75 hours.
Step-by-step explanation:
In order to determine the hours, we have to know about direct proportionality.
The direct proportionality happens when two variables increase at the same time and their rate is a constant. It means that if one variable is increased, so the other variable will be increased too.
I have attached an image that shows a graph of two variables with direct proportionality.
In this case, we can get the constant of both variables: losing weight and the spending time.
[tex]k=\frac{Weight}{Time}=\frac{1}{3} =0.33[/tex]
Then we need to know how many hours Sam will spend to lose 25 lbs:
[tex]\frac{25}{T}=k=0.33\\ T=\frac{25}{0.33}\\ T=75.76[/tex] hours.
Finally, Sam needs to spend 75 hours to lose 25 lbs.