Answer:
x = 3, x = [tex]\frac{2}{7}[/tex]
Step-by-step explanation:
(a)
The first step is to subtract 23x from both sides, that is
7x² - 23x + 6 = 0 ← in standard form
(b)
Consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term.
product = 7 × 6 = 42 and sum = - 23
The factors are - 21 and - 2
Use these factors to split the x- term
7x² - 21x - 2x + 6 = 0 ( factor the first/second and third/fourth terms )
7x(x - 3) - 2(x - 3) = 0 ← factor out (x - 3) from each term
(x - 3)(7x - 2) = 0
Equate each factor to zero and solve for x
x - 3 = 0 ⇒ x = 3
7x - 2 = 0 ⇒ 7x = 2 ⇒ x = [tex]\frac{2}{7}[/tex]
Miley earns $10 per hour babysitting. Is the amount of money earned proportional to the number of hours she spends babysitting? If it is proportional, find the constant of proportionality, explain what it means, and write an equation to represent the situation. Then find out how much she would make for babysitting 5.5 hours.
Answer:
think what constant of proportionality is
Step-by-step explanation:
Two car dealers in town are offering different sales on the same model of car. Sandra can buy the car from Al's Cars, which normally sells the car for $11,000 but will offer a 15% discount. Or she can buy the car from CarWorld, where the car sells for $12,500 and the dealership offers a 20% discount.
A. What is the price of the car at each dealership after the markdown?
B. How much will sandra save by going to the correct car dealer?
PLEASE HELP!!!
I need a favor could you all check if am correct.
Is (9.1)^2=973.2 true or false
Answer:
false
Step-by-step explanation:
A worker is spray painting doors. It takes LaTeX: \frac{2}{5} 2 5 of a can of spray paint to paint 1 door. The worker has 2 cans of spray paint total. How many doors can the worker paint? Group of answer choices
Answer:
5 doors
Step-by-step explanation:
Can of spray paint : door painted = 2/5 : 1
The worker has 2 cans of spray paint total.
How many doors can the worker paint?
Let x = number of doors the worker can paint
Can of spray paint : door painted
2 : x
Equate both ratios
2/5 : 1 = 2 : x
2/5 ÷ 1 = 2/x
2/5 × 1/1 = 2/x
2/5 = 2/x
Cross product
2 * x = 5 * 2
2x = 10
x = 10/2
x = 5 doors
The worker can paint 5 doors with 2 cans of spray paint
You bought a soda for $0.50, then sold it for $1.00. What was the percent
change?
Answer:
50
Step-by-step explanation:
Answer:
I think the answer is 50%
Step-by-step explanation:
$1.00-$0.50=$0.5
0.5 as a percentage is 50%
Find the slope of the line between the coordinates (-6, -13) and (3, -1) and simplify the fraction if needed.
Answer:
The slope is 1 1/3.
Step-by-step explanation:
[tex]m=\frac{y2-y1}{x2-x1} \\m=\frac{-1-(-13)}{3-(-6)}\\m=\frac{12}{9}\\m=\frac{4}{3}\\m=1\frac{1}{3}[/tex]
what is the solution to 9+4n -79
Answer:
17.5
Step-by-step explanation:
You have to find n right?
9+4n-79 = 0
-> 4n = 70
-> n = 17.5
Please help me! 15 pts! + Brainliest!
The graph shows how the depth of a submarine increased as it dove beneath the surface. What can be concluded from the information on the graph? The graph is above, please answer correctly thanks :)
Answer:
D
Step-by-step explanation:
It increased 3 meters every second if you look closely at chart
Please help me I forgot how to do it
Answer:
b
Step-by-step explanation:
Which of the followin statements are true about the equation 10x + 45x - 13 = 11(5x + 6) *
Step-by-step explanation:
The given expression is :
10x + 45x - 13 = 11(5x + 6)
We can simplify it as follows :
Opening parenthesis on RHS
10x + 45x - 13 = 55x + 66
Taking like terms together,
55x-55x = 13+66
0 = 13+66
The given expression has no solution, as the variable cancels out woh each other. It is a meaningless expression.
PLEASE HELP!!! A $950 computeris on sale for 15% off. If sales tax is 6% will this computer cost including tax?
Answer:
the computer will cost 864.5
Step-by-step explanation:
15% of 950 is 142.5.
950-142.5=807.5
6% of 950 is 57
Answer:
$855.95
Step-by-step explanation:
So We can first multiply the original price by 0.85 becuase its 15 percent off and we’re paying 85 percent of the original price basically.
You’ll get 807.50.
Now to find the sales tax we multiply that by 1.06 becuase the 100 percent is the price now and we’re just adding 6 percent so 1.06, and you’ll get 855.95
So no adding and subtracting and that takes off 2 steps and its way quicker
So the final answer is $855.95
Hello can you solve 2+2
Thx and bye
Answer:
4
Step-by-step explanation:
Please help if you can, thank you.
I think it's A or C, I'm not sure.
Please confirm.
Answer:
A
Step-by-step explanation:
A 2-column table with 5 rows. Column 1 is labeled Key Words with entries twelve, more than, quotient, a number, eight. Column 2 is labeled Replace with entries 12, +, divided by, k, 8.
Write and evaluate the expression. Then, complete the statement.
twelve more than the quotient of a number and eight
The value of the expression when k = 40 is
.
Question 1 (10points)
Help :)
Answer:
um B
Step-by-step explanation:
???????
ILL GIVE BRAINLEST
What is the independent variable (x) for this situation?
number of cases of paper
not enough information to determine independent quantity
cases of paper per tree
number of trees used
trees used per case of paper
Answer:
The independent variable would be
trees used per case of paper
Step-by-step explanation:
Answer:
Number of trees used
Step-by-step explanation:
The number of trees used is the independent variable because it doesn't depend on anything, meaning it isn't changed by other variables. The number of cases of paper would be the dependent variable because it depends on the number of trees used.
Leila bought 3 bananas, which weighed a total of Three-fourths of a pound. If each banana weighed the same amount, what is the weight of each banana? StartFraction 1 Over 12 EndFraction of a pound StartFraction 1 Over 9 EndFraction of a pound One-fourth of a pound One-third of a pound
Answer:
[tex]Each\ Weight = \frac{1}{4}[/tex]lb
Step-by-step explanation:
Given
[tex]Weights = \frac{3}{4}lb[/tex]
[tex]Bananas = 3[/tex]
Required
Determine the weight of each
To do this, we simply divide the total weight by the number of bananas.
[tex]Each\ Weight = \frac{3}{4}/3[/tex]
Convert to multiplication
[tex]Each\ Weight = \frac{3}{4} * \frac{1}{3}[/tex]
[tex]Each\ Weight = \frac{1}{4}[/tex]
Hence, each banana weighs 1/4 of a pound
Ans C
Ste-by-ste-exp
its 1/4
jason made 42 christmas cookies he gave half of them to his teacher he ate 1 third of them then gave 8 to his little sister how many do santa get
Answer:
and why did teacher ate it
plz help it’s a or b
Answer:A
Step-by-step explanation:
Answer: The think answer would have to be B because it has a rate of change of 2/3 or 8/12 and a has a rate of change of 4/12
Step-by-step explanation:
2,995,384 - 89 = blank
Answer:
hope this helps
Step-by-step explanation:
2,995,384 - 89
==2,995,295
Answer:
the answer is 2,995,295
ive been on vacation and forgot simple math what part of a function cant repeat? help pls
Answer:
The x-values cant repeat... Which is the first number in a ordered pair...
Step-by-step explanation:
L.maooo
50 points!!! If your good at math please help! :)
Y is directly related to X, and Y is 81 when X is 27.
The constant of variation is ___
(there are no answer choices, it's just a type in box so i need an exact answer please! :))
Answer:
Since x and y are directly related, the equation for their comparison will look like
kx = y
where k is your constant. They give you an instance in the problem where x = 27 and y = 81. Plug this into the above equation and solve for k.
kx = y
k (27) = 81
k = 3
So, the constant of variation is 3.
A couch costs $350 to make. Before it is sold, it is marked up in price 80% more. How much will the couch cost?
Answer:$630
Step-by-step explanation:
What is 80% of 350?
Y is 80% of 350
Equation: Y = P% * X
Solving our equation for Y
Y = P% * X
Y = 80% * 350
Converting percent to decimal:
p = 80%/100 = 0.8
Y = 0.8 * 350
Y = 280
then u add 280 to 350
Please help due in 5 min solve for n
Help me solve this plssss
Answer:
UV = 40
UY = 40
Step-by-step explanation:
The sides in YXWVU are the same as the ones in GHIJK times 10.
UV = KJ*10
UY = KG*10
What is the value of v?
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3 is what percent of 90?
Answer:
2.7
Step-by-step explanation:
Just trust me, im right
Which function rule models the function over the domain specified in the table below?
f(x)
11
11
17
O f(x) =3x + 10
O fx) = 2x + 3
O fx)= 4x +5
O fx) =3x-10
The function with the domain is given by f ( x ) = 2x + 3
What is a function rule?The function rule is the relationship between the input or domain and the output or range. A relation is a function if and only if there exists one value in the range for every domain value.
A function is a relation from a set of inputs to a set of possible outputs where each input is related to exactly one output.
Given data ,
Let the function be represented as A
Now , the value of A is
Let the x values be x = { -7 , -1 , 3 , 4 , 7 )
Let the y values be y = { -11, 1 , 9 , 11 , 17 }
Now , the function is given as
f ( x ) = 2x + 3 be equation (1)
when x = -7
y = 2 ( -7 ) + 3
y = -11
when x = 7
y = 2 ( 7 ) + 3
y = 17
Hence , the function is f ( x ) = 2x + 3
To learn more about function rule click :
https://brainly.com/question/3760195
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1. The printed price of a DVD player is $ 7500. If a sales tax of 8% is realised from the buyer, find the price at which the DVD player is sold?
Answer:
11 % of 3rds into 8
Step-by-step explanation:
Answer:
8100
Step-by-step explanation:
printed price = $7500
sales tax = 8%
selling price of DVD
= 7500 + 8% of 7500
= 7500 + 600 = $8100
Answer: DVD was sold for $8100
Please help me I need help puhleass
Answer:
I can not see the full question
Step-by-step explanation:
Answer:
12/20 is 3/5, 42/66= 7/11, 7/56=1/8, 30/45=2/3, 9a/50a= i dont know because you are not able to divide 9/2 and is able to divide 50/2, 125/625= 1/5
Step-by-step explanation:
divide the numerator and the denominator buy the same number to get the answer i got 12/20 to 3/5 because 12/4= 3 and 20/4=5.