Answers
Isolate the variable by dividing each side by factors that don't contain the variable.
x
=
20
NOTES: The letter "x" is often used in algebra to mean a value that is not yet known. It is called a "variable" or sometimes an "unknown."
Generally, the algebraic expression should be any one of the forms such as addition, subtraction, multiplication and division. To find the value of x, bring the variable to the left side and bring all the remaining values to the right side. Simplify the values to find the result.
ANSWER: 20
Related Questions
PLS HELP ASAPPP I WILL GIVE BRAINLIEST
Answers
Answer:
Yes, it is.
Step-by-step explanation:
Answer:
Yes sir
Step-by-step explanation:
What is the total area of the figure below?
Answers
To find the area of this figure you need to separate it into different sections.
First to find the area of the triangle on the left is multiple 8 by 3, giving the area of 24.
Second find the area of the rectangular shape towards the left, and ignore the triangle ends on both sides for now. To find the area of the rectangle multiply 10 by 9.
Lastly, to find the area of both triangles on both ends is to multiply 9 by 3. The three is found by subtracting 10 from 16 and dividing it by two.
Adding all the areas together gives you the answer = 141 in^2
What is the slope of a line that is perpendicular to the line with equation 12x+3y=9?
Answers
Answer:
Step-by-step explanation
4x-3=y
perpendicular means
-1/4x-3=y
what is the equation, in point-slope form, that is perpendicular to the given line and passes through the point (-4,-3)?
Answers
Answer:
C. y + 3 = ¼(x + 4)
Step-by-step explanation:
✔️First, find the slope of the given line on the graph that it is perpendicular to:
Slope (m) = ∆y/∆x = -4/1 = -4
Thus, the slope of the line that is perpendicular to the given line would be the negative reciprocal of -4.
The negative reciprocal of -4 = ¼
✔️Find the equation in point-slope form, y - b = m(x - a) using slope and a point on the line:
Substitute m = ¼, (a, b) = (-4, -3) into y - b = m(x - a):
y - (-3) = ¼(x - (-4))
y + 3 = ¼(x + 4)
Three is 7 more than one-fifth of a number.
Answers
Answer:
3=1/5x+7
Step-by-step explanation:
when it says "Of a number" it means to add a variable, so i added a x. and when it says "more than" it means to add, so 3=1/5x+7 is the answer
Cheryl has some oranges. She put the oranges in p boxes of three oranges each and has two oranges left. Express the total number of oranges Cheryl has in terms of p.
Answers
Answer:
so she had x oranges
she put the oranges into p boxes with 3 in each box and had 2 left so
total=3 times p+2 or
total=3p+2
Crop yield is the ratio of the number of bushels harvested to the number of acres used for the harvest. This year, the harvest at a farm was 94,010 bushels of grain, resulting in a crop yield of 170 bushels per acre.
To the nearest whole acre, how many acres were harvested?
453 acres
489 acres
509 acres
553 acres
Answers
Answer:
553 acres
Step-by-step explanation:
94010 ÷ 170 =553
Answer:
D
Step-by-step explanation:
A 41-inch piece of steel is cut into three pieces so that the second piece is twice as long as the first piece, and the third piece is one inch more than five times the length of the first piece. Find the lengths of the pieces.
Answers
Answer:
Length of first piece = 5 inches
Length of second piece = 10 inches
Length of third piece = 26 inches
Step-by-step explanation:
Given that:
Length of piece of steel = 41 inch
Let,
x be the length of first piece
y be the length of second piece
z be the length of third piece
According to given statement;
x+y+z = 41 Eqn 1
y = 2x Eqn 2
z = 5x+1 Eqn 3
Putting value of y and z from Eqn 2 and 3 in Eqn 1
[tex]x+2x+5x+1=41\\8x = 41-1 \\8x = 40[/tex]
Dividing both sides by 8
[tex]\frac{8x}{8}=\frac{40}{8}\\x=5[/tex]
Putting x=5 in Eqn 2 and 3
y = 2(5) = 10
z = 5(5) + 1 = 25+1 = 26
Hence,
Length of first piece = 5 inches
Length of second piece = 10 inches
Length of third piece = 26 inches
Select the correct answer!! PLEASE HELP!!
Answers
Answer:
A
2√2 * 7√18
=84
.................
g(x) = 4x+5; find g(5)
Answers
Hello!
[tex]\large\boxed{g(5) = 25}[/tex]
If g(x) = 4x + 5, find g(5) by substituting 5 for x:
g(5) = 4(5) + 5
Simplify:
g(5) = 20 + 5
g(5) = 25
Purchasing a TV that is 20% off will save $180.
a. Name the different parts with the words: PART, WHOLE, PERCENT.
20% off
S180
Original Price
b.
What was the original price of the TV? Show two methods for finding your answer.quick
Answers
______________________________
O = D × P ÷ 100= 20% × $180 ÷ 100= $36= $180 + $36= $216______________________________
A tank has 82 3/4 litres of water, 24 4/5 litres were used, and the tank was filled with another 18 3/4 litres. What is the final volume of the water in the tank?
Answers
Answer:
76 14/20
(76 7/10) simplified
Step-by-step explanation:
First we make the denominator of the fraction equal
82 15/20
24 16/20
18 15/20
We then subtract
82 15/20 - 24 16/20
81 35/20 - 24 16/20 =
57 19/20
Then we add
57 19/20 + 18 15/20=
76 14/20
(76 7/10) simplified
Is it linear or exponential
Answers
A chemist has a bottle of a 1% acid solution and a bottle of a 5% acid solution. She wants to mix the two solutions to get 100 ml of a 4% acid solution. Follow the steps below to find how much of each solution she should use.
Part 2 out of 3
Use the information in the table to write a system of equations.
Answers
Answer:
12% alkaline
Step-by-step explanation:
The amount of 1% acid solution she needs to mix is 25 ml while the percentage of 5% acid solution she needs to mix is 75 ml.
Given to us
A chemist has a bottle of a 1% acid solution and a bottle of a 5% acid solution.
She wants to mix the two solutions to get 100 ml of a 4% acid solution.
Assumption
Let the amount of 1% acid solution be x ml, and the amount of 5% acid solution be y ml.
Total Amount of the Final SolutionAs the chemist wants to mix the two solutions to make 100 ml of solutions, therefore,
amount of 1% acid solution + amount of 5% acid solution = 100ml
x + y = 100.....equation 1
Solving for y,
y = 100 - x
What is the % of the acid in the mixture?We know that the mixture is having a 4% concentration and is 100 ml in volume.
[tex](1\%)x+(5\%)y = (4\%)100\\0.01x+0.05y=0.04\times 100\\[/tex]
Substitute the value of y,
[tex]0.01x+0.05(100-x)=0.04\times 100\\\\0.01x + (0.05\times 100)-(0.05\times x) = 4\\\\0.01x + 5 -0.05x =4\\\\0.01x-0.05x = 4-5\\\\0.04x = 1\\\\x=\dfrac{1}{0.04}\\\\x = 25\ ml[/tex]
Substitute the value of x in equation y,
[tex]x+y = 100\\25 +y =100\\y = 100-25\\y=75\ ml[/tex]
Hence, the amount of 1% acid solution she needs to mix is 25 ml while the percentage of 5% acid solution she needs to mix is 75 ml.
Learn more about the System of equations:
https://brainly.com/question/12895249
Write the equation of the line graphed below.
Answers
Answer:
a
Step-by-step explanation:
Barry's pet turtle, Turtlelini, escaped from his backyard. Barry found Turtlelini by the creek and wanted to determine
how far Turtlelini had walked. On the map, Barry's house is 0.6 inch from the creek. If the scale on the map shows that
1.5 inches are equivalent to 0.8 mile, how far did Turtlelini walk, to the nearest tenth of a mile?
O 0.3 mile
0 0.5 mile
1.1 miles
O 1.3 miles
Answers
Answer:
A=0.3
Step-by-step explanation:
0.3
0.5
1.1
1.3
thats the correct answer
Answer:
A
Step-by-step explanation:
Maria invests $600 in bank account that earns simple interest. She earns $30 at the end of 12 months. Janae invests $350 at the same rate of interest for 12 months. How much money will Janae earn on her $350 investment after. 12 months?
A. 5.00
B. 12.50
C.17.50
D.47.50
Answers
I need help ASAP please I’m giving brainliest pleaseee!
Answers
That as a mixed number is 56 0/1
$0.56 as a fraction would be 56/1
Given the exponential equation 3* = 243, what is the logarithmic form of the equation in base 10? (5 points)
log, 243
log, 3
log, 3
log, 243
log,03
log, 243
log, 243
Answers
Answer:
[tex]x = \frac{log\ 243}{log\ 3}[/tex]
Step-by-step explanation:
Given
[tex]3^x = 243[/tex]
Required
Express as a logarithm
[tex]3^x = 243[/tex]
Take log of both sides
[tex]log\ 3^x = log\ 243[/tex]
Apply the following law of logarithm
[tex]log\ a^b = b\ log\ a[/tex]
So, the expression becomes:
[tex]log\ 3^x = log\ 243[/tex]
[tex]x\ log\ 3 = log\ 243[/tex]
Divide both sides by log 3
[tex]\frac{x\ log\ 3}{log\ 3} = \frac{log\ 243}{log\ 3}[/tex]
[tex]x = \frac{log\ 243}{log\ 3}[/tex]
Hence, the expression in base 10 is:
[tex]x = \frac{log\ 243}{log\ 3}[/tex] or [tex]x = \frac{log_{10}\ 243}{log_{10}\ 3}[/tex]
Seven values on the number line above are marked with letters. Match the opposites.
A) U and Z; W and X; V and Y
B) U and V; W and X; Y and Z
C) U and G; W and Y; V and X
D) U and Z; W and Y; V and X
Answers
Answer:
a
Step-by-step explanation:
hope this helps yout just have to put the negative letters with the positive!!!
Which expression is equivalent to
5x + 2(3x - 4) + 10
!! please explain !!
Answers
Answer:
11x+2
Step-by-step explanation:
Answer:
11x=+2
Step-by-step explanation:
5x+2(3x-4)+10
5x+(2*3x-2*4)+10
5x+(6x-8)+10
5x+6x-8+10
=11x=2
Solve for x x/6=9
X=15
X=3
X=1.5
X=54
Answers
HƏĻP MƏ
Evaluate the expression when f= 125, 3/5(F - 20)
Answers
Answer:
63
Step-by-step explanation:
plug 125 in for 'f'
3/5(125-20) = 3/5 · 105 = 315/5 = 63
⚠️ANSWER NEEDED SUPER FAST ⚠️ BRAINLIEST TO RIGHT AND QUICK ANSWER
Answers
Answer:
15%
Step-by-step explanation:
A. The slope of the line will change from positive to negative
B. The slope of the line will change from negative to positive
C. The y-intercept of the line will change from positive to negative
D. The y-intercept of the line will change from negative to positive
Answers
Answer:
The slope of the line will change from negative to positive
Step-by-step explanation:
the equation is in the form of y=mx+c and m is negative. By multiplying m with another negative number it turns positive, thus slope changes from negative to positive
What is the slope of the line that passes through the points (3, 5) and (-1, 5)
Answers
Answer:
0
Step-by-step explanation:
solve with y2-y1 / x2-x1
5-5 is 0
-1-3 is -4
0/4 is 0
slope is 0
The revenue, in dollars. of a company that produces video game systems can be modeled by the expression 52 +
2t - 80. The cost in dollars, of producing the video game systems can be modeled by 5.22 -+ 100, where x is the
number of video game systems sold. If profit is the difference between the revenue and the cost, what expression
represents the profit?
Profit can be modeled by the polynomial expression
If 1,000 video game systems are sold, the company's profit is $
Answers
Answer:
1). Profit = 3x - 180
2) Profit of selling 1000 video games = $2820
Step-by-step explanation:
Expression for the revenue = 5x² + 2x - 80
Expression for the production cost of the video games = 5x² - x + 100
Since, profit is the difference between the revenue and the cost,
Expression for the profit will be,
Profit = Revenue - Cost
= (5x² + 2x - 80) - (5x² - x + 100)
= 5x² + 2x - 80 - 5x² + x - 100
= 3x - 180
Here, x = Number of video games sold
If number of video games sold = 1000
Profit = (3×1000) - 180
= 3000 - 180
= $2820
There are 20 pens in a box. Eighteen (18) of the pens are black. The other 2 pens are red. What percentage of the pens are black?
Answers
Answer: 90%
Step-by-step explanation: All u gotta do is 18/20. You get .9 and u just add a 0 at the end
Write an explicit formula for An, the nth term of the sequence 3,9, 27, ...
Answers
Step-by-step explanation:
Apparently the common ratio is
3
Explanation:
The 2nd term is 3
the 3rd=9=3²
the 4th= 27=3³
To get to the n
th term we will have to multiply n−1
times by 3
Or: tn=3n−1
area of a circle, diameter = 16.8cm
Answers
Answer:
Step-by-step explanation:
Area of circle=Pi times radius^2
Diameter is half of radius=8.4
Pi*8.4^2=221.670777637
Hope this helps!
Answer:
221.56 cm^2 or 70.56pi
Step-by-step explanation:
Area of a circle = pi*radius^2
Radius = diameter/2, radius = 8.4
3.14(8.4)^2 = 221.56 cm squared, or 70.56pi
