81x^2 = 4 NEED HELP SOLVING QUADRATIC EQAUTIONS
Answer:
x = ± [tex]\frac{2}{9}[/tex]
Step-by-step explanation:
Given
81x² = 4 ( divide both sides by 81 )
x² = [tex]\frac{4}{81}[/tex] ( take the square root of both sides )
x = ± [tex]\sqrt{\frac{4}{81} }[/tex] = ± [tex]\frac{\sqrt{4} }{\sqrt{81} }[/tex] = ± [tex]\frac{2}{9}[/tex]
how do u do this ??????
Answer:
the answer is 50 degrees
Step-by-step explanation:
the sum of all three angles of a triangle is always 180 degrees.
first you have to combine all terms, equal it to 180, and then solve for x.
4x-20+2x+2x=180
8x-20=180
8x=200
x=25
then to find angle G you multiple x times 2 (2x)
2 × 25 = 50
HELP ASAPPPP
a. 9
b. 25
c. 34
d. 68
Answer: D = 68
Step-by-step explanation:
set VW and WX equal to each other
3x + 7 = x + 25
subtract x from both sides
2x + 7 = 25
subtract 7 from both sides
2x = 18
divide 18 by 2x to find x
x = 9
plug x in to get the full answer
3(9) + 7 + (9) + 25
FIRST TO ANSWER GETS BRAINLIEST!!!!
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. disclaimer, sometimes the brainliest button takes a while to show up but u still get the brainliest!^w^
Answer:
(3,2)
Step-by-step explanation:
If you have any questions about the way I solved it, don't hesitate to ask me in the comments below =)
Answer:
(3,2)
Step-by-step explanation:
i need to find what y equals
Answer:
Step-by-step explanation:
the letter y is the number 2
Cable company A charges $45 a month for cable plus a $18 installation fee. Cable B charges $39 a month for cable plus a $30 fee for installation. Which inequality can be used to find out when the monthly cost for Cable company A is less than Cable company B? 39x+30<45x+18 45x+18>39x+30 45x+18<39x+30 39x+18<45x+30
Question
Cable company A charges $45 a month for cable plus a $18 installation fee. Cable B charges $39 a month for cable plus a $30 fee for installation. Which inequality can be used to find out when the monthly cost for Cable company A is less than Cable company B?
a)39x+30<45x+18
b) 45x+18>39x+30
c) 45x+18<39x+30
d)39x+18<45x+30
Answer:
c) 45x+18<39x+30
Step-by-step explanation:
Step 1
We have to find the Algebraic expressions for the cable companies
Cable company A charges $45 a month for cable plus a $18 installation fee.
Let the number of months be represented as x
Hence, this is represented as:
$45 × x + $18
= 45x + 18
Cable B charges $39 a month for cable plus a $30 fee for installation.
Let the number of months be represented as x
Hence, this is represented as:
$39 × x + $30
= 39x + 30
The inequality that can be used to find out when the monthly cost for Cable company A is less than Cable company B?
= Cable company A < Cable company B
= 45x + 18 < 39x + 30
Therefore option c is correct
if abc def and mno pqr then abc pqr by the transitive property true or flase but one trinagle is left out DEF
Answer:
true
Step-by-step explanation:
Answer:
False
Step-by-step explanation:
The answer is false beacause the statement would only be true is abc=def and def=mno. Then abc=mno. This way the statement would be true. The current statement is false because it does not connect abc congruent to pqr in any way.
At the soccer camp the ratio to boys to girls is 7:5. There are 30 girls how many boys are there?
Answer:
b
Step-by-step explanation:
Jan spent $48 for 5 movie tickets. Three kids’ tickets were $8 each. How much were the 2 adult tickets. Write an equation to model (use t for ticket).
Answer:
t=$20 for each two adults
Step-by-step explanation:
$48-8=$40
$40×2=$20
Solve for y in terms of w, x, and z.
x = żyw
Answer and work down below. Let me know if you have any questions
Find an equation perpendicular to x=1 and passing through (8,-9)
What is the equation (Type your answer in standard form.)
Answer:
[tex]y=-9[/tex]
Step-by-step explanation:
We want to find an equation of a line that's perpendicular to x=1 that also passes through the point (8,-9).
Note that x=1 is a vertical line since x is 1 no matter what y is.
This means that if our new line is perpendicular to the old, then it must be a horizontal line.
So, since we have a horizontal line, then our equation must be our y-value of our point.
Our y-coordinate of our point (8,-9) is -9.
Therefore, our equation is:
[tex]y=-9[/tex]
And this is in standard form.
And we're done!
help ASAP i give brainly
Bobbi wanted to purchase a shirt that had an original price of $38.99 at the store where she works. She gets an employee discount of 25%. How much will she need to pay for the shirt?
A.$28.00
B.$28.50
C.$29.24
D.$38.00
Answer:
C. $29.24
Step-by-step explanation:
just took the Quiz
Simplify (1/2)4. one half
Answer: 2
Step-by-step explanation:
24. Predict the type of quadrilateral that is formed
by the points of intersection of the lines
3x + y - 4 = 0, 4x - 5y + 30 = 0,
y = – 3x – 1, and - 4x + 5y + 10 = 0. Give
reasons for your prediction. Verify that your
prediction is correct by solving this problem.
Answer:
A PARALLELOGRAM OR A RHOMBUSStep-by-step explanation:
Given the equation of the lines 3x + y - 4 = 0, 4x - 5y + 30 = 0, y = – 3x – 1, and - 4x + 5y + 10 = 0. For us to be able to predict the type of quadrilateral formed by this lines, we need to find the slope of each of the lines. Any two lines with the same slope will be parallel lines.
The standard form of equation of a line is expressed as y = mx+c where m is the slope of the line.
Re-writing each equation in standard format:
For the line 3x + y - 4 = 0;
3x+y = 4
y = 4-3x
y = -3x + 4
Hence the slope of the line is -3
For the line 4x - 5y + 30 = 0:
4x-5y = -30
-5y = -30-4x
-5y = -4x-30
divide through by -5
y = 4/5 x + 6
Hence the slope of this line is 4/5
For the line y = – 3x – 1:
The line is already in its standard format, hence the slope of the line is -3
For the line - 4x + 5y + 10 = 0:
-4x+5y = -10
5y = -10+4x
5y = 4x-10
divide through by 5
y = 4/5 x - 10/5
y = 4/5 x - 2
Hence the slope of this line is 4/5
From the slopes above, it can be seen that the line 4x - 5y + 30 = 0 is parallel to - 4x + 5y + 10 = 0 and that of the line 3x + y - 4 = 0 is parallel to y = – 3x – 1 due to their similar slope.
To know the the type of quadrilateral formed by this lines, first we need to check whether two dissimilar lines are perpendicular to each other. If they are perpendicular to each other, it means the quadrilateral could be a square or a rectangle but if otherwise, it will either be a parallelogram or a rhombus.
For two lines to be perpendicular, the product of their slope must be -1 i.e m1m2 = -1
For the first two lines:
m1 = -3 and m2 = 4/5
Taking their product:
-3*4/5 = -12/5
Since the product did not give use -1, hence the quadrilateral is neither a square nor a rectangle. The quadrilateral can therefore either be a parallelogram or a rhombus since the intersecting lines of either shapes are not perpendicular to each other.
An automobile with a mass of 1200 kg accelerates at a rate of 3.0 m/s2 in the forward direction. What is the net force acting on the automobile?
The net force acting on the automobile is 3600N
The acceleration of an object is directly proportional to the net force acting on it.
The acceleration of an object also depends upon its mass.
Acceleration (a) = net force (F) / mass (m)
a = F / m
Given that; a = 3 m/s², m = 1200 kg, hence:
3 = F / 1200
F = 3600N
The net force acting on the automobile is 3600N
Find out more at: https://brainly.com/question/13191643
If x = -4 and y = 3, what is the value of the expression below?
x-3y²
Answer:
-31
Step-by-step explanation:
[tex]x-3y^2\\Substituting \ x=-4, y=3\ we\ get,\\-4-3(3^2)\\=-4-27\\=-31[/tex]
Solve: 3(2d - 1) - 2d = 4(d -2) + 5
Answer:
2= d
Step-by-step explanation:
please help!!! i’m not good at proofs
Answer:
17) b. commutative property
18) NOT SURE d. associative property
19) NOT SURE d. associative property
20) a. commutative property
how many even numbers are there between 1 to 540
Answer:
271
Step-by-step explanation:
The count of even numbers between 0 and n is [n/2] + 1.
540/2=270
270+1=
271
I NEED HELP ASAP PLEASE
Answer:
x = 30
Step-by-step explanation:
30 + 2x = 90
Subtract 30 from both sides;
2x = 60
Divide both sides by 2;
x = 30
QUICK THIS IS URGENT on edg Yuron is sketching a scale drawing of a famous painting. The painting is 54 inches wide and 72 inches long. He used a scale factor of Two-thirds to make his sketch. How many inches wide is Yuron’s sketch?
36
48
81
84
Answer: 36
Step-by-step explanation: 56 is the width 2/3 of 56 is 36
Answer:
36
Step-by-step explanation:
Of 145 runners, 72 run only on weekends and 63 run on both weekends and during the week. How many of the runners run only during the week?
Answer:
Step-by-step explanation:
145 - 72 = 73
73 - 63 = 10
What Are the factors of 24 and 32
Answer:
The factors of 24 are 24, 12, 8, 6, 4, 3, 2, 1
The factors of 32 are 32, 16, 8, 4, 2, 1.
Step-by-step explanation:
Answer:
24: 1, 2,3,4,6,8,12,24
32: 1, 2 ,4, 8, 16,32
Step-by-step explanation:
Suppose that you decide to participate in a charity walkathon to raise money for your cause. Some people decide to donate a fixed amount, while others agree to donate a little money for every mile you walk. Before the event starts, you raised $25, and you have been pledged $1.50 for each mile you walk. The function defined by d(m)=1.5m+25 can be used to relate the miles you walk, m, and the amount of money donated to you in dollars, d(m).
Evaluate d(3).
Answer:
Step-by-step explanation:
d(3)=1.5x3+25=29.5
1 1/2 pounds of milk is how many cups?
Answer:
[tex]2\frac{5}{8}[/tex] cups
Step-by-step explanation:
1 pound = 1 3/4 cups1/2 pound = 7/8 cups1 3/4 + 7/8 = 21/821/8 = 2 5/8I hope this helps!
Simplify.11^10/11^3 x 11^5
Answer:19487171x161051
=19487171x161051
Step-by-step explanation:
Answer:
11^12 = 3,138,428,376,721
Step-by-step explanation:
The applicable rules of exponents are ...
(a^b)(a^c) = a^(b+c)
(a^b)/(a^c) = a^(b-c)
__
[tex]\dfrac{11^{10}}{11^3}\cdot 11^5=11^{10-3+5}=\boxed{11^{12}=3\,138\,428\,376\,721}[/tex]
How often does the line y = 1 intersect the graph?
three times
does not intersect
once
twice
Answer:
3 times
Step-by-step explanation:
Take out a ruler and draw a horizontal line through y = 1. It should become obvious immediately that this horizontal line intersects the graph 3 times.
The line [tex]\boldsymbol{y=1}[/tex] intersect the graph three times.
GraphA graph is a mathematical depiction of a network that describes the connection between lines and points.
A graph is made up of points with lines connecting them. The length of the lines and the position of the points are irrelevant. Each object in a graph is referred to as a node.
Line [tex]\boldsymbol{y=1}[/tex] intersects the graph at three points.
So, the line [tex]y=1[/tex] intersect the graph three times.
Find out more information about graph here:
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A baseball pitcher won 80% of the games he pitched. If he pitched 35 ballgames, how many games did he win? *
Answer:
28
Step-by-step explanation:
Grace is going to a carnival that has games and rides. Each game costs $1.50 and each ride costs $2.50. Grace spent $16.50 altogether at the carnival and the number of games she played is twice the number of rides she went on. Write a system of equations that could be used to determine the number of games Grace played and the number of rides Grace went on.
Answer:
Number of Rides: [tex]5.5R = 16.5[/tex]
Number of Games: [tex]1.5G = 9[/tex]
Step-by-step explanation:
Given
Represent the games with G and the Rides with R
[tex]G = 1.50[/tex] -- cost
[tex]R = 2.50[/tex] --- cost
[tex]Total = 16.50[/tex] -- cost
Required
Represent the system using an equation
The equation can be represented as follows;
[tex]G + R = Total[/tex]
Assume She plays G games and had R rides, we have
[tex]1.5G + 2.5R = 16.5[/tex]
Since she plays twice as much games as rides,
This implies;
[tex]G = 2R[/tex]
So, we have
[tex]1.5 * 2R + 2.5R = 16.5[/tex]
[tex]3R + 2.5R = 16.5[/tex]
[tex]5.5R = 16.5[/tex] --- This equation can be used to solve for Number of Rides
Solving further
[tex]R =16.5/5.5[/tex]
[tex]R =3[/tex]
Substitute 3 for R in [tex]1.5G + 2.5R = 16.5[/tex]
[tex]1.5G + 2.5 * 3 = 16.5[/tex]
[tex]1.5G + 7.5 = 16.5[/tex]
Solve for 1.5G
[tex]1.5G = 16.5 - 7.5[/tex]
[tex]1.5G = 9[/tex] --- This equation can be used to solve for Number of Games
Solving further
[tex]G = 9/1.5[/tex]
[tex]G = 6[/tex]
slove for the variable 2(y - 5) = 5y + 23
Answer:
y = -11
Step-by-step explanation:
