Answer:
x= -2/9
Step-by-step explanation:
42-21x+12x=44
-21x+12x=44-42
-9x=2
x= -2/9
Lin spent 80 minutes doing homework on Monday. Each day from Tuesday
through Friday, Lin spent half as much time doing homework as the day before.
How much total time did Lin spend doing homework, from Monday through
Friday? Explain how you know. *
Answer:
240 minutes
Step-by-step explanation:
Half of 80 is 40. So multiply 40 by 4 which is 160 minutes then add the 80 which equals 240 minutes
Overall 240 minutes Lin spend doing homework from monday to friday.
What is an expression?
Expression in mathematical is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
Since Lin spent 80 minutes on monday doing homework and from tuesday to friday he is doing half the work before which means he will be doing in 40 mintues now for 4 days that is from tuesday to friday.
Now overall time in mintues he spend on homework will be sum of mintues spent on monday and mintues spent from tuesday to friday :
overall = 80 + 40x4
= 240 minutes
Therefore, overall 240 minutes Lin spend doing homework from monday to friday.
Read more about property of multiplication here :
https://brainly.com/question/14391436
#SPJ2
a survey of 100 students showed that 45 students take english, 25 take math,
What value of x makes this equation true? 2x + 3 = 9
Answer:
the is x would equal to 3
Answer:
[tex]\boxed {\tt x=3}[/tex]
Step-by-step explanation:
We want to solve for x, therefore we must isolate the variable.
We are given the equation:
[tex]2x+3=9[/tex]
3 is being added to 2x. The inverse of addition is subtraction. Subtract 3 from both sides of the equation.
[tex]2x+3-3=9-3[/tex]
[tex]2x=9-3[/tex]
[tex]2x=6[/tex]
x is being multiplied by 2. The inverse of multiplication is division. Divide both sides of the equation by 2.
[tex]\frac{2x}{2} =\frac{6}{2}[/tex]
[tex]x=\frac{6}{2}[/tex]
[tex]x=3[/tex]
Let's check our solution. Plug 3 in for x and solve.
[tex]2x+3=9[/tex]
[tex]2(3)+3=9[/tex]
[tex]6+3=9[/tex]
[tex]9=9[/tex]
This checks out, so we know our solution is correct.
The solution to the equation 2x+3=9 is x=3
Find the value of the following problems (a) 5 cube 3
Answer:
125
Step-by-step explanation:
5^3 = 5 × 5 × 5 = 125
A family wants to purchase a house that costs $185,000 . They plan to take out a $135,000 mortgage on the house and put $50,000 as a down payment. The bank informs them that with a 15-year mortgage their monthly payment would be $925.14 and with a 30-year mortgage their monthly payment would be $615.65 . Determine the amount they would save on the cost of the house if they selected the 15-year mortgage rather than the 30-year mortgage. Savings = $
Answer:
4,592.4
Step-by-step explanation:
925.14×15 = 13,877.1
615.65x30=18,469.5
18,469.5
- 13,877.1
= 4,592.4
Answer:
$55,108.80
Step-by-step explanation:
15 year mortgage
925.14/month times 180 months =
$166,525.20
30 year mortgage
615.65/month times 360 months =
$221,634
$221,634 - $166,525.20 =
$55,108.80
So the difference between the 15 year mortgage and the 30 year mortgage is $55,108.80
From the top of a tree 20 metres high,the angle of depression at a point on the opposite bank of a river is found to be 30° .Find the breadth of the river.
Answer:
17.3
Step-by-step explanation:
sin(30)=0.5
0.5*20=100
20*20+x*x=100
x=17.3
Domain:
Range:
State the domain and range for the graph
domain:
x <= 3
range:
x ∈ (-∞, ∞)
Which describes how a person most likely uses latitude and longitude lines?
I need help on 1-8 ..
Answer:
To begin this problem we call "the sum of the number" x. Now we have the equation 2(x)+5=20. This is the answer because it said to translate the equation. I think 2x+5+20 would be the correct translation.
What must be added to the expression x^2 - 18x to make it a perfect square?
Answer:
+ 81
Step-by-step explanation:
Given
x² - 18x
To complete the square
add ( half the coefficient of the x- term )² to x² - 18x
x² + 2(- 9)x + (- 9)²
= x² - 18x + 81
= (x - 9)² ← perfect square
if the sum of two angles is 180°,then each is the___of the other
Step-by-step explanation:
"If the sum of 2 angles is 180°, then each is the supplementary angle of the other".
Can someone please help me find the length and width please? 10 POINTS
Answer:
4.4 m
Step-by-step explanation:
The scale shows you the width of the bedroom is ...
1.2 + 2.1 + 1.1 = 4.4 . . . meters
What percent is represented by the shaded area?
Answer:
6%
Step-by-step explanation:
ok so count theres 6 squares filled out of 100 (10 by 10 squares)
fraction: 6/100
this is easy because its out of 100.
a percent basically means out of 100 so boom.
6%
Answer:
6%
Step-by-step explanation:
6×100÷100
Plz help!!! It is 2.389 x 10 miles to the moon from the Earth. How many miles will it be if you go to the moon and
back two times? Write your answer in scientific not
Answer:
47.78
Step-by-step explanation: 2.389 times 10 = 23.89 x 2 = 47.78
A city park is opening a new swimming pool. You can pay a daily entrance fee of $3 or purchase a membership for the 12 week summer season for $82 dollars and pay only $1 per day to swim. How many days would you have to swim to make the membership worthwhile?
Answer:
41 days
Step-by-step explanation:
The membership would be worthwile if you swim an amount of days paying the daily entrance fee that would make your total cost equal to the cost of the membership. From that you can write the following expression:
3x=82+(1*x), x is the number of days you go to swim
Now, you can solve for x:
3x=82+x
3x-x=82
2x=82
x=82/2
x=41
According to this, the answer is that you would have to swim 41 days to make the membership worthwile.
A store has 2 employees that earn 159 dollars altogether. If they all earn the same amount, how much does each employee earn?
A bakery sold 39 mocha cupcakes in a day, which was 65% of the total number of cupcakes sold that day. How many total cupcakes did the bakery sell that day?
please help due today
Answer:
let know that,
the number will we missing .
so answer will 5/5 is right
Answer:
1 aka 1/1
Step-by-step explanation: if a/b=c then c*b=a and a/c=b
5/10=1/12
1/2 / 1/2 = 1
check ur answer:
5/10 / 1 = 5/10 = 1/2
write the degree of polynomials how do you find the degree?
Answer:
5 or 3 will be the answer
The definition of a degree is the highest exponent of a term with a non-zero coefficient.
What is the exponent for the term [tex]8x^2[/tex]? 2
What is the exponent for the term [tex]13y^3[/tex]? 3
Since 3 is greater than 2, the degree of the polynomial is 3.
Hope this helps.
頑張って!
Describe how to graph the points (3, -2) and (-1, -7).
Answer:
Place the dots on the x and y axis.
Step-by-step explanation:
(x, y)
Place the x axis dot on the lines that go left to right.
Place the y axis dot on the lines that go up and down.
I hope this helped! ^^
There are 67 electricians on a jobsite. Thirty-one (31) are "career" helpers. Twenty-four (24) are indentured apprentices. Nine (9) are journeymen. Three (3) are foremen. What percentage of the electricians are indentured apprentices?
Answer:
35.82 %
Step-by-step explanation:
Total no of electrician job = 67
No. of indentured apprentices = 24
____________________________________
Percentage mean per hundred,
Example for x percentage of any thing
literally it means if there are total no. of 100 things, then x is the number of thing in consideration.
Formula for percentage calculation = (number of a particular thing/ total no of things out of which the particular thing is considered) *100
______________________________________
Here,
Total no of electrician job = 67
No. of indentured apprentices = 24
percentage of indentured apprentices = (Total no of electrician job /No. of indentured apprentices) * 100 = 24/67 *100 = 35.82 %
Thus, there 35.82 % indentured apprentices out of total electricians.
It means that if there were 100 electricians, then there would have been 35.82 indentured apprentices out of those 100 electricians.
there are 800 seats in the varsity theater. during regular preformances, all seats cost $12 each. It costs the owner $275 to pay his preformers for each show. a: write an expression that could predict the owners profit if "n" people buy tickets for a preformance b: if the profit is $1,213, how many people attend? c: If the same number of people attended but the owner's expenses changed to $375, would the profit increase or decrease and by how much?
Answer:
The correct answers are the following:
A) P=12n-275
B) 124
C) Decrease by $100
Step-by-step explanation:
A) P=12n-275 - Each person (n) pays $12, then the cost/expense ($275) is subtracted from the income to get the profit.
B) 1,213=12n-275 - Plug in the value for P ($1,213).
1,488=12n - Add $275 to both sides.
124=n - Divide both sides by $12.
n=124 - This the number (n) of people that attended.
C) P=12n-375 - Change the value for expense to $375.
P=12(124)-375 - Plug in the value for n (124).
P=1488-375 - Simplify and find the difference.
P=1,113 - This is your profit.
1,113-1,213=-100 - $100 reduction/decrease of profit (or -$100 to profit)
Hope this helps!
Point L is on line segment KM. Given LM = 3x + 3,
KM = 5x + 4, and
KL = 5x + 1, determine the numerical length of KM.
Answer: KM =
Answer:
KM = 4
Step-by-step explanation:
[tex] LM = 3x + 3 [/tex]
[tex] KM = 5x + 4 [/tex]
[tex] KL = 5x + 1 [/tex]
[tex] KL + LM = KM [/tex] (segment addition postulate)
[tex] (5x + 1) + (3x + 3) = 5x + 4 [/tex] (substitution)
Solve for x
[tex] 5x + 1 + 3x + 3 = 5x + 4 [/tex]
Combine like terms
[tex] 8x + 4 = 5x + 4 [/tex]
[tex] 8x + 4 - 4 = 5x + 4 - 4 [/tex]
[tex] 8x = 5x + 0 [/tex]
[tex] 8x - 5x = 0 [/tex]
[tex] 3x = 0 [/tex]
[tex] x = 0 [/tex]
[tex] KM = 5x + 4 [/tex]
Plug in the value of x
[tex] KM = 5(0) + 4 [/tex]
[tex] KM = 0 + 4 = 4 [/tex]
Hello There!! I need help in this question...Use the interactive graph to plot each set of points. Which sets represent proportional relationships? Check all that apply. Use the interactive graph to plot each set of points. Which sets represent proportional relationships? Check all that apply. (3, 1), (6, 2), (9, 3) (2, 4), (4, 6), (7, 9) (1.5, 3), (3, 6), (4, 8) (3, 1), (4, 3), (8, 6) Plus, please make a explained to. And, do not guess to this...
Answer:
A- (3, 1), (6, 2), (9, 3) and C- (1.5, 3), (3, 6), (4, 8) are Correct
Step-by-step explanation:
Martin has 5/6 of a pizza . Liam has 4 times as much pizza as Martin. How much pizza does Liam has?
Answer:
10/3 pizzaStep-by-step explanation:
step one:
This problem is focused on ratios and fractions
from the problem statement, Martin has 5/6 pizza
Liam has 4 times more of what Martin have
step two:
so we can express what Liam has as
=(5/6)*4 = 20/6or
=5/6+5/6+5/6+5/6= 20/6
= 20/6
step three:
we can reduce both numerator and denominator
= 10/3
Hence Liam has 10/3 pizza
Quantity of pizza that Liam has is;
3 full pizzas and a third of a pizza.
Martin has 5/6 of a pizza.
Thus;
Quantity of pizza that Martin has = 5/6
Now we are told that Liam has 4 times as much as Liam, then;
Quantity of pizza Liam has = 4(5/6) = 10/3
This translates to 3⅓ pizza
Thus, in conclusion, Liam has 3 full pizzas and a third of a pizza.
Read more at; https://brainly.com/question/17585958
Which of the following represents a function that is reflected over the x-axis and shifted up 3
units from the parent graph? *
(1 Point)
o f(x) = -√² – 3
Of(x) = -x2 + 3
O f(x) = x2 + 3
O f (x) = x2 - 3
Answer:
Option 2.
Step-by-step explanation:
f(x) = - x^2 + 3
The parent function is x^2
- the '-' before the x^2 reflects it in the x-axis, and the + 3 shifts it up 3 units.
Solve for x
4 (x – 7) = -8
Answer:x=4
Step-by-step explana
Point a is at (-1,-9) and point m is at (0.5,-2.5) point m is the midpoint of a and point b what coordinates of point b
Answer:
B (2, 4)
Step-by-step explanation:
A (-1,-9); M (0.5, -2.5); B (xB, yB)
M is the midpoint of AB, therefore we have these 2 equations:
(*) xA + xB = 2. xM
(**) yA + yB = 2. yM
(*) <=> xB = 2. xM - xA = 2x0.5 - (-1) = 1 + 1 = 2
(**) <=> yB = 2. yM - yA = 2x(-2.5) - (-9) = -5 + 9 = 4
So, B (2, 4)
Solve for a.
q+a= b
Solve for x
ax + b = c
solve for r.
(r + y)/q = m
First answer gets brainliest!!!!! Please help
Answer: first answer
:))))))))))))))))))
Where my brainlist
Answer:
its the 3rd answer xD this took awhile to figure out
Step-by-step explanation: