Answer: x=10
Step-by-step explanation:
Simplifying
3x + 15 = 45
Reorder the terms:
15 + 3x = 45
Solving
15 + 3x = 45
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-15' to each side of the equation.
15 + -15 + 3x = 45 + -15
Combine like terms: 15 + -15 = 0
0 + 3x = 45 + -15
3x = 45 + -15
Combine like terms: 45 + -15 = 30
3x = 30
Divide each side by '3'.
x = 10
Simplifying
x = 10
4 Eli's family is going to have a big go-cart race and each go-cart takes 3-gallon of gas. If there are 7 go-carts, how many total gallons of gas do they need to fill up all the go-carts?
What is the solution to the equation 5x-2=2x+13?
Answer: 1.825
Step-by-step explanation:
Given that f(x)=2x+1 and g(x)=3x-1/2 find g(f(3))
1. 5
2. 7
3. 9
4. 10
Answer:
7
Step-by-step explanation:
Solve for the first variable in one of the equations, then substitute the result into the other equation.
Answer:
10
Step-by-step explanation:
You must substitute the 3 for the x in f(x) = 2x+1 first
f(x) = 7
Then substitute the 7 for the x in g(x) = (3x - 1)/2
g(x) = 10
Plzz help me ASAP
35 points
Answer:
The area of the triangle is around 100 degrees
The density of a certain material is such that it weighs 5 pounds for every 4.5
quarts of volume. Express this density in grams per liter. Round your answer
to the nearest whole number.
Answer:
533 grams per liter
Step-by-step explanation:
i got it from delta math
Express 10 billion in scientific notation
Answer:
10,000,000 in scientific notation is: 1 x 10^7
Step-by-step explanation:
Which is the best to buy?
A
$18.09 for 9 bottles of juice
B
$22.33 for 11 bottles of juice
C
$3 for 1 bottle of juice
D
$6 for 3 bottles of juice
dilations
Help with step by step answer
Answer:
see attached
Step-by-step explanation:
When the dilation factor is 3, each image point is 3 times as far from P as the original. I find it convenient to count the grid squares and go that distance twice again.
Write the equation of a line that is perpendicular to 2x-7y=13 and which passes through the point ( -3,8).
Given parameters:
Equation of the line given 2x - 7y = 13
Coordinates of points = -3, 8
Unknown:
Equation of a line perpendicular = ?
Solution;
To find the equation of this line, simply find the negative inverse of the given line.
m = [tex]-\frac{1}{m}[/tex]
2x - 7y = 13 , this is an equation of a straight line
let us write it in the form y = mx + c so as to derive the slope
y and x are coordinates
m is the slope
c is the y intercept
2x - 7y = 13;
-7y = -2x + 13
divide through by -7;
y = [tex]\frac{2}{7}x[/tex] + [tex]\frac{13}{7}[/tex]
The slope of this line is [tex]\frac{2}{7}[/tex];
Now the slope of a line perpendicular to it will be [tex]-\frac{7}{2}[/tex];
the equation of the line will be;
y = [tex]-\frac{7}{2} x + C[/tex]
Since the coordinate of this line is (-3,8) , let us find C;
y = 8 and x = -3;
8 = [tex]-\frac{7}{2}[/tex] (-3) + C
multiply through by 2;
16 = 21 + 2C
16 - 21 = 2C
-5 = 2C
C = [tex]\frac{-5}{2}[/tex]
Now the equation of the line is;
y = [tex]-\frac{7}{2} x + \frac{5}{2}[/tex]
Answer:
j
Step-by-step explanation:
m
10x + 3 = 8x + 3; x =
Answer:
x = 0
Step-by-step explanation:
How do you find the angle measure?
Answer:
∠ XYZ = 41°
Step-by-step explanation:
∠ XYZ = ∠ 3x + 20 ( corresponding angles ) , thus
8x - 15 = 3x + 20 ( subtract 3x from both sides )
5x - 15 = 20 ( add 15 to both sides )
5x = 35 ( divide both sides by 5 )
x = 7
Thus
∠ XYZ = 8x - 15 = 8(7) - 15 = 56 - 15 = 41°
a)
(+4) + ( - 3)
b) (-2) + (-3)
c)
(+2) + (+4)
d) (-6) + (+2)
Answer:
c ) 6
d) 1 0 this are correct answer ok
A tennis racket originally
cost $60 and is on sale
for 25% off.
A tennis racket originally
cost $60 and is on sale
for 25% off.
15
What is the cubed root of 8
The answer is 2 hope you have a good day
Steve hires a compact car for 5 days and is charged a rental of $145.29. How much will he be charged, if he retains the car for two or more days?
The points on a section of an exam are given by the function f(x), where x is the number of questions answered correctly in that section. If [tex]f(12)=18[/tex], then a test-taker receives 18 points for answering _____ questions in the sections correctly.
Answer:
Step-by-step explanation:
X=5?
Answer:
The answer is 12
Step-by-step explanation:
In the beginning, it says f(x) where x is the number of questions answered correctly in that section. So whatever replaces x is your answer. In this case, it is 12.
Express the statement "A rectangular field with an area of 120m' has it length 12mn longer than the width" as quadratic equation.
Answer:
The quadratic equation is x^2 -12x -120 = 0
where x represents the length of the field
Step-by-step explanation:
We want to make an expression in terms of a quadratic equation;
Let the length of the field be x mm , then the width will be (x-12) mm
Mathematically , the area of the field will be L * B
Thus;
x * (x-12) = 120
That gives;
x^2 -12x = 120
x^2 -12x -120 = 0
Parallel, Perpendicular
Or Neither
X=4
X=9
x = 4 is a vertical line through 4 on the x axis
x = 9 is a vertical line through 9 on the x axis
any two vertical lines are always parallel
side note: the slope of any vertical line is undefined
Somebody please help ASAP!
Answer:
Simplified: 2.4x−12
Step-by-step explanation:
(2.4)(x+−5)
=(2.4)(x)+(2.4)(−5)
=2.4x−12
hey i need some help :)
Answer:
[See Below]
Step-by-step explanation:
[tex]\boxed{Hey~There!}[/tex]
__________________________________________________________
[tex]\boxed{Solve~-3x<9:}[/tex]
Rearrange the equation by subtracting what is to the right of the greater than sign (≤, ≥) from both sides of the inequality:[tex]-3*x-(9)<0[/tex]
Pull out like factors:[tex]-3x - 9 = -3 * (x + 3)[/tex]
Divide both sides by [tex]-3[/tex]: Remember to flip the inequality sign:[tex]<=>[/tex]
Subtract [tex]3[/tex] from both sides:[tex]x > -3[/tex]
[tex]\boxed{The~answer~is: x > -3}[/tex]
[tex]\boxed{The~answer~is: C}[/tex]
__________________________________________________________
[tex]Hope~this~helps~Mate!\\-Your~Friendly~Answerer,~Shane[/tex] ^-^
Identify the equation of the graph.
pls pls someone?
Answer:
A
Step-by-step explanation:
Find the measures of angles x, y, and z in the figure
Answer: 46 and 80l degreesx 23+b
Step-by-step explanation:
fast as possible pls, 100 points
Complete the product:
5x^3 (7x−1)
Answer:
35 x^4 - 5x^3
Step-by-step explanation:
5x^3 (7x−1)
Distribute
5x^3 (7x) +5x^3 *(−1)
35 x^3 *x - 5x^3
35 x^4 - 5x^3
Answer:
Answer:
35 x^4 - 5x^3
Step-by-step explanation:
5x^3 (7x−1)
Distribute
5x^3 (7x) +5x^3 *(−1)
35 x^3 *x - 5x^3
35 x^4 - 5x^3
Step-by-step explanation:
PLEASE HELPP ME I WILL GIVE BRAINLY. THIS PROBLEM IS WORTH 20 POINTS. PLEASE GIVE RIGHT ANSWER.
The formula for the length of the hypotenuse in a right triangle is where and bare the lengths of the triangle's sides this form is derived from the Pythagorean theorem) From the side, a certain ramp has a right-triangular shape. Its height is 30 centimeters and its horizontal length is 3 meters. What calculation will give us the estimated length of the ramp in meters? on Khan academyI know the answer is because I I want people to know the answer on Khan academy but you can add more answers
[tex] {30}^{2} \div {100}^{2} + {3}^{2} [/tex]
Answer:
3mStep-by-step explanation:
The length of the ramp will be the longest side of the right-triangular shape (the hypotenuse). The height and the horizontal length will be the other two sides (adjacent and opposite).
Acording to the theorem;
hyp² = opp²+adj²
Given
opp = 30cm = 0.3m (convert to metres)
adj = 3 m
Substitute
hyp² = 0.3²+3²
hyp² = 0.09+9
hyp² = 9.09
hyp = √9.09
hyp = 3.0145 m
Hence the estimated length of the ramp in meters is 3m
is this proportional or non proportional ???
Answer:
non-proportional
Step-by-step explanation:
non-proportional because it doesn't pass through the origin.
Which relation DOES NOT represent a
function?
A) (5, 4) , (2, −3) , (1, 6) , (4, 0)
B) (−1, 0) , (5, 2) , (−3 ,10) , (3, 8)
C) (3, 5) , (4, −1 ) , (3, −2) , (0, 0)
D) (4, 6) , (5, 6), (0, 6)
E) (2, −1) , (−4, 6) , (0, 6) , (−3, 5)
Answer:
C
Step-by-step explanation:
Hope this Helps :)
3.) Determine each percentof change. Round to the nearest whole
percent if necessary. $80 to $56
Answer:70% decrease
Step-by-step explanation:
50/86
What is the slope of the line that passes through the
points (-4, 10) and (2, 22).
Answer:
2
Step-by-step explanation:
slope= (y2-y1)/x2-x1)
= (22-10)/(2--4)
= 12/(2+4)
= 12/6
=2
Find the measures of all angles in a triangle ABC
Answer: 3x23+b
G67282
Step-by-step explanation: