Answer:
Step-by-step explanation:
1# Answer:
4x=-12
Step-by-step explanation:
Let a number = X
So
The product of four and a number is negative twelve
4x=-12
2#
3 - 6x = -15 is the equation (it says 3 decreased by the product not the product decreased by 3)
#3
[3(-1)]+4=1
(-3)+4=1
#4
#5
The equation is given by:
9-1/3x = 7
Step-by-step explanation:
Let the number be denoted by x.
Now, we are given a word phrase as follows:
One-third of a number less than nine is equal to seven.
Now this word phrase could be mathematically expressed as a equation by:
one-third of x is: 1/3 x
and this number less than 9 is given by:
9-1/3x
Now, this number is equal to 7.
i.e. we finally have:
9-1/3x = 7
6. Johnny is a plumber, and Darnel is an electrician. Johnny
charges customers a fee of $150 just to come to their house
and then $75 per hour that he is there. Darnel charges a fee
of $50 for a home visit, plus an additional $125 per hour. How
long do they work to earn the same amount?
a
Answer:
2 hoursStep-by-step explanation:
Equations for each
Johnny:
J(x) = 75x + 150Darnel:
D(x) = 125x + 50In order to get J(x) = D(x) we need to make right sides equal and solve for x:
75x + 150 = 125x + 50 125x - 75x = 150 - 50 50x = 100 x = 2graph the equation on the coordinate plane. y = 4x
The graph of the equation, y = 4x, is shown below.
How to Graph an Equation on a Coordinate Plane?Given an equation, for example, y = 4x, to plot it on a coordinate plane, we need to find the coordinates of the line that we would plot and connect together to graph the equation.
Find the corresponding y-values when x = 1, x = 2, and x = 3. To do this, see the steps below:
Substitute x = 1 into y = 4x:
y = 4(1)
y = 4
We have a point, (1, 4).
Substitute x = 2 into y = 4x:
y = 4(2)
y = 8
We have another point, (2, 8).
Substitute x = 3 into y = 4x:
y = 4(3)
y = 12
We have a third point, (3, 12).
Plot the three points on a coordinate plane as shown below to get the graph of the equation.
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Christina drove to school slowly during a rainstorm. It took her 15 minutes to get to her school, which was 4.5 miles away. Which graph can be used to find the speed at which Christina drove to school?
10 POINTS !! you got this
the answer is second graph
Help would be much appreciated
Answer:
D: 5
E: -2x
F: x^1
Step-by-step explanation:
4*5=20
-14x/7=-2x
x^3/x^2=x^1
the last one may not be write but I think that they are all correct
Find the discount to the nearest cent for: $50 shoes, 30% off.
Answer:
https://www.calculatorsoup.com/calculators/financial/sale-price-calculator.php
Step-by-step explanation:
What is the question of the line shown
X= -13
X= -13y+1
Y= -13
Y= -13y+1
Answer:
x=-13
Step-by-step explanation:
the line is on the x axis and cant change its x axis of -13
Point (-1,3). m= Undefined.
Find the equation of the line that contains the given point and has the given slope.
And explain..
Answer:
m=1/0 (undefined)
equation=y2-y1/x2-x1=y-y1/x-x1
since M is undefined and M=y2-y1/x2-x1
then the equation=y-y1/x-x1=1/0
y-3/x--1=1/0
cross multiplying
0 (y-3)=1 (x+1)
=x+1
20 POINTS HELP, WILL GIVE BRAINLIEST IF CORRECT! (Only if two people answer I will give brainliest)
Answer:
Bottom(equation 3)=No solution
Middle(equation 2)= Infinite solutions
Top(equation 1)=1 solution
Step-by-step explanation:
Brainly pls I hope this helps
plz help me!!!!!!!!!!!!!!
Answer:
10/3
Step-by-step explanation:
A rectangular garden measures 8 x 6 meters. It is desired to remove part of the garden to install a uniform sidewalk of witdh (x) around of such garden. The surface of the new garden must be 1/6 of the old garden. Determine the witdh (x) of the sidewalk of the new garden.
(Using quadratic formula)
The width of the sidewalk is 1.155.
What is a rectangle?A rectangle is a type of parallelogram having equal diagonals.
All the interior angles of a rectangle are equal to the right angle.
The diagonals of a rectangle do not bisect each other.
Given that,
The dimension of the rectangular garden is 8 x 6.
The surface of the new garden is 1/6 th of the original one.
Suppose the width of the side walk is x.
Then, the dimensions of the sidewalk is given as (8 - 2x) x (6 - 2x).
As per the question the following equation can be written for the area of new garden,
(8 - 2x) x (6 - 2x) = (1/6) (8 x 6)
=> 48 - 4x²- 30x = 8
=> 4x² + 30x - 40 = 0
Solve the above quadratic equation to get,
x = -8.655, 1.155
Since the width cannot be negative, the value of x is taken as 1.155.
Hence, the width of the sidewalk of the new garden is 1.155m.
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help me pls need help
Problem 1
w = width
w+36 = length, because it's 36 feet longer compared to the width
=======================================================
Problem 2
The area w(w+36) is less than 2040, and it's also larger than 0.
We can write that as [tex]0 \le w(w+360) \le 2040[/tex] which is the same as [tex]0 \le w^2+360w \le 2040[/tex]
If you wanted to drop the first part, then you can say either [tex]w(w+360) \le 2040[/tex] or [tex]w^2+360w \le 2040[/tex]
I used the formula area = length*width
=======================================================
Problem 3
There are many possibilities here. Let's say w = 10 feet. If so then the length would be w+36 = 10+36 = 46 feet. This 10 by 46 rectangle has an area of 10*46 = 460 square feet which is under the 2040 sq ft limit.
Another possibility is that w = 20 ft and w+36 = 56. This 20 by 56 rectangle has an area of 20*56 = 1120 sq ft.
It turns out you can pick any value of w between 1 and 30, assuming you only restrict yourself to integers. You can find the largest possible value of w by solving the equation w(w+36) = 2040. The positive solution to this equation is roughly w = 30.62
Side note: even though something like w = 1 is possible, it's not very realistic. A conference hall that's only 1 ft wide won't be able to fit a person comfortably unless they don't mind being sandwiched between two walls and have to walk sideways.
=======================================================
Problem 4
If you solved w(w+36) = 360 with a graphing calculator or the quadratic formula, then you would find the positive solution for w is roughly 8.15
If your teacher is considering positive real numbers, then this is realistic; however, if they are only considering positive integers, then something like w = 8.15 isn't possible.
PLEASE HURRY!!!!
Which table represents a linear function?
Answer:
1st
Step-by-step explanation:
can someone tell me the answer to. 16 = 2(2x + 4)
Answer:
16= 4x+8
16-8=4x
x=8/4
x= 2
Step-by-step explanation:
16=2(2x+4) 16=(2×2x) + (4×2) 16= 4x+8. 16-8=4x+8-8. 8=4x. 8/4=4x/4. 2=x
Multi Step Problem (Show work PLEASE)
14m - 10 = 4x + 18
Answer:
x = 7/(m - 2)/2
Step-by-step explanation:
So the picture I attached should have the work
A medicine dropper releases about 1 liter of medicine in a day. How many milliliters of medicine would be released in an hour?
Answer:
41.7 ml milliliters of medicine would be released in an hour.
Step-by-step explanation:
1 day = 1 Liter
24 hours = 1000 ml
Now,
1000/24 = 41.7 ml
Thus, 41.7 ml milliliters of medicine would be released in an hour.
-TheUnknownScientist 72
Answer:
41.7 ml milliliters of medicine would be released in an hour.
Step-by-step explanation:
what is the value of x?
Answer:
x = 51°
Step-by-step explanation:
The image of the triangle is an isosceles triangle. Since it is an isosceles triangle, ∠DFE = ∠FDE.
78 + x + x = 180
=> 2x = 102
=> x = 51°
Hoped this helped.
Tara's Ice Cream Shop sold 20 sundaes. 2 of the sundaes had nuts on top. What is the ratio of the number of sundaes without nuts to the number of sundaes with nuts?
18:?
Answer:
18-2
Step-by-step explanation:
the ratio for the shop is 18-2 18 without nuts for every 2 with nuts
Answer:
im pretty sure its 18:2
Step-by-step explanation:
Help me with this please please please some pieces were planted in three different soils( clay, sand, Loam) under similar conditions. You want to find out from which style the P will go tallest after 7 days choose the most appropriate way to collect the data experiment interview questionnaires or observation
What is the answer to 3/4 x 7/9? I really need help
7/12
Hope this helped
Please help me with this math problem I'm stuck on!! Will give brainliest!! Due tonight at 11:59pm!!
Answer:
can you give me a base line of whats happenung
`
Step-by-step explanation:
6x + 7 = -5
How do you solve this? :)
Answer:
x = -2
Step-by-step explanation:
Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.
PEMDAS is the order of operations, and stands for:
Parenthesis
Exponents (& Roots)
Multiplications
Divisions
Additions
Subtraction
~
First, subtract 7 from both sides of the equation:
6x + 7 = -5
6x + 7 (-7) = -5 (-7)
6x = -5 - 7
6x = -12
Next, isolate the variable, x, by dividing 6 from both sides of the equation:
(6x)/6 = (-12)/6
x = -12/6
x = -2
x = -2 is your answer.
~
a line has a y-intercept on -11 and a slope of .25. Write it's equation in slope intercept form
Answer:
[tex]y = \frac{1}{4} x - 11[/tex]
Step-by-step explanation:
Slope- intercept form
y= mx +c, where m is the slope and c is the y-intercept.
Slope
= 0.25
= ¼
Substitute m= ¼ into the equation:
y= ¼x +c
Given that the y-intercept is -11, c= -11.
Thus, the equation of the line is y= ¼x -11.
2n+3pm=7px solve for x
Answer:
x is being multiplied by 7p so to find x you need to have it alone on one side of the problem, so you could divide both sides by 7p, making it look like 2n+3pm/7p=x (simplify if needed)
Step-by-step explanation:
8. Denise using a ladder to clean the outside of her second story windowsThe ladder she is using is 34 feet long , and she puts the base of the ladder 15 feet away from the houseHow high up the side of her house does the ladder reach Round to the nearest tenth , If necessary
Answer:
30.5 ft
Step-by-step explanation:
Right triangle: a^2 + b^2 = c^2
15^2 + x^2 = 34^2
225 + x^2 = 1,156
x = sqrt (1156 - 225)
x = 30.5 ft
Lewis buys a bag of almonds from the bulk food section. Almonds cost $9.99 per pound. The bag of almonds that he buys weighs 2.1 pounds. How much will Lewis pay for his bag of almonds before tax?
Answer:
20.98$
Step-by-step explanation:
A balloon with a 50 ft string makes an angle of 39 degrees with the ground. How high above the ground is the balloon if the land of the person holding the balloon is 5 ft above the ground?
Answer:
Step-by-step explanation:
This is late but the other is not an answer at all.
The 50 ft string makes an angle of 39 degrees with the ground so the stromg and balloon form a right-angle triangle to the ground.
The height of balloon from string = 50*sin(39degrees)
= 31.47 ft
As the string is held by a person 5 ft above ground, the balloon is above ground at 31.47 + 5
= 36.47 ft.
3. Explain why 2x + 6 = 8 and 2x are equivalent and have the same solution.
Answer:
X = 1
Step-by-step explanation:
2x + 6 = 8
2x [+6 = 8
2x = 8 - 6
2x = 2
x = 1
Please help me with this homework
Answer:
domain is -5, -2, 1, 5
range is 10, 11, 4, 10
Step-by-step explanation:
domain means all x values. range means all y values
326×8546=_______________________________________________________________
Me ajudem
The answer to 326*8546 is 2,785,996
PLEASE HELP ME OUT
STOP WITH LINKS
NAME AT LEAST 3 DIFFERENCES AND SIMILARITIES BETWEEN TU AND USTED
Answer:
Tu is for u then Usted is like the form to say it but formal
Step-by-step explanation: