Answer:
21
Step-by-step explanation:
You have to distribute the 7 in this case:
f(x) = 7(-x + 3)
f(x) = -7x + 21
The y-intercept is the number without the x with it. So, with this function it is 21.
I hope this helps!!
- Kay :)
Find the difference: -15 - 47
Answer:
-62
Step-by-step explanation:
One easy way to subtract two negative numbers like this (for me anyway) is to factor out the minus sign and add:
- (15 + 47)
- (62)
Remove the parentheses
-62
Find the missing side, round to the nearest hundredth.
Answer:
1)10.57
2)5.91
Step-by-step explanation:
1)According to Pythagoras theorem
c=√a²+b²
=√5.2²+9.2²
=√27.04+84.64
=√111.68
=10.57
2) according to Pythagoras theorem
c²=a²+b²
6.5²=2.7²+b²
b²=6.5²-2.7²
b=√6.5²-2.7²
=√42.25-7.29
=√34.96
=5.91
Solve the following inequality 18x<-25
Answer:
X = - 25/18 the answer is that
Answer:
x < -1[tex]\frac{7}{18}[/tex]
Step-by-step explanation:
18x < -25
Divide both sides by 18.
x < -25 ÷ 18
Evaluate.
x < -1[tex]\frac{7}{18}[/tex]
Subtract 5¢ from $4.10. Include the dollar sign and no spaces in your answer.
Answer:
4.05 c
Step-by-step explanation:
Answer:
$4.05
Step-by-step explanation:
$4.10 - $0.05 = $4.05
Tommy went to Taco World and bought 3 tacos and 4 burritos and spent $14.30. Burritos cost twice as
much as tacos. What was the cost of each taco and each burrito?
If Tommy spent $14.30 and the cost of burritos is twice as much as tacos then the cost of Taco is $1.30 and the cost of burrito is $2.60.
Given that Tommy spent $14.30 and the cost of burritos is twice as much as tacos .
We are required to find the cost of each tacos and burrito.
Suppose the cost of a taco be x and the cost of burrito be y.
Because the cost of burrito is twice as the cost of taco so y=2x.
Total expenditure by Tommy=3x+4*2x
14.30=3x+8x
11x=14.30
x=1.30
y=2*1.3
y=$2.60
Hence if Tommy spent $14.30 and the cost of burritos is twice as much as tacos then the cost of Taco is $1.30 and the cost of burrito is $2.60.
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If he drank 80% of his water on his entire hike. How much did he drink? (Remember he brought 3 liters of water.)
p.s i have class
Answer:
2.4 Litres of waterStep-by-step explanation:
80% of (3 litres)
You can take 3 litres to be 3000 ml which is how I solved it.
OPTION 1_________80/100 x 3000
=2400 or 2.4 litres
The same can go with not taking ml which you can just use litres
OPTION 2_________80/100 x 3
=2.4 litres
I used the ml since I do not need the calculator for that one and it is faster to calculate.
PLEASEEE HELP ME FO THISSS
As C is the mid-point of BD.
Therefore, BC=DC ...(i)
As AB ⊥ BD and ED ⊥ BD
So, ∠ABC= 90° and ∠EDC= 90°
Therefore, ∠ABC=∠EDC= 90° ...(ii)
As two line segments, AE and BD intersect at point C, so the vertically opposite angles are equal.
Therefore, ∠BCA=∠DCE ...(iii)
Now, in ΔABC and ΔEDC,
Angle, ∠BCA=∠DCE [ from equation (iii)]
Side, BC=DC [ from equation (i)]
Angle, ∠ABC=∠EDC [ from equation (ii)]
So, by ASA property of congruency, ΔABC and ΔEDC are congruent
Hence, ΔABC ≅ ΔEDC.
Please please help me!!
solve the system of equations by using the substitution method.
{ 4x - 5y = 19
{ y = x - 4
select the correct choice below and, if necessary, fill in the answer box to complete your choice.
A. The solution is __. (simplify your answer. Type an ordered pair.)
B. There are infinitely many solutions.
C. There is no solution.
Answer:
[tex]\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:}[/tex]
[tex]x=1,\:y=-3[/tex]
As the system of equations has only one solution, thus the solution consistent.
Step-by-step explanation:
Given the system of equations
4x - 5y = 19
y = x - 4
Solving the system of equations by using the substitution method.
[tex]\begin{bmatrix}4x-5y=19\\ y=x-4\end{bmatrix}[/tex]
[tex]\mathrm{Subsititute\:}y=x-4[/tex]
[tex]\begin{bmatrix}4x-5\left(x-4\right)=19\end{bmatrix}[/tex]
[tex]4x-5\left(x-4\right)=19[/tex]
[tex]-x+20=19[/tex]
isolate x for [tex]-x+20=19[/tex]
[tex]-x+20=19[/tex]
[tex]-x=-1[/tex]
Divide both sides by -1
[tex]\frac{-x}{-1}=\frac{-1}{-1}[/tex]
[tex]x=1[/tex]
[tex]\mathrm{For\:}y=x-4[/tex]
[tex]\mathrm{Subsititute\:}x=1[/tex]
[tex]y=1-4[/tex]
[tex]y=-3[/tex]
[tex]\mathrm{The\:solutions\:to\:the\:system\:of\:equations\:are:}[/tex]
[tex]x=1,\:y=-3[/tex]
As the system of equations has only one solution, thus the solution consistent.
Please remember that if the system of equations has only one solution, then it is an independent system of equations.
how do you do this with decimals
PLEASE HELP WILL MARK BRAINLIEST Question 8
Which pair of equations show below would have infinite solutions?
Answer
A Y = -2 + 8
y = 4x - 7
B y = x - 4
y = 3x - 2
C) x
x – 3y = -3
x – 3y = 6
D 3x +y = 3
6x + 2y = 6
Answer:
Step-by-step explanation:
a)y=-2x+8
y=4x-7
solution
b)y=x-4
y=3x-2
solution
c)x – 3y = -3
x – 3y = 6
no solution
d)3x +y = 3
6x + 2y = 6
infinite.
Answer: D
Step-by-step explanation:
Is the equation linear or non-linear?
2x-2y=18
4(1-x)+2x=-3(x+1)
-) 7/5
-) -7/5
-) -3/4
-) -7
Answer:
the last one -) -7
Step-by-step explanation:
if this help you please give me a crown please
Please help
Thanks In advance!
the answer will be 4
x=4.
the angle ABC is parallel to angle AEF
express this number in scientific notation 2,000,000
Answer:
In scientific notation the number would be 2×10^6.
Hope it helps!
A bicycle with 28-inch diameter wheels is traveling at 25 mi/h. find the angular speed of the wheels in rad/min.
The angular speed of the bicycle's wheels that are traveling at 25 mi/h is 1885.7 rad/min
To solve this angular speed problem the formula and the procedure we will use is:
v = w * r
Where:
v = tangential velocityw = angular velocityr = radiusInformation about the problem:
v = 25 mi/hd = 28 inchw = ?Calculating the radius of the wheel, we have:
r = d/2
r = 28 inch/2
r = 14 inch
Converting the velocity unit from mi/h to inch/min, we get:
25 mi/h * (63360 inch / 1 mi) * (1h / 60 min) = 26400 inch/min
Applying the tangential velocity formula and isolating the angular velocity, we get:
v = w * r
w = v / r
w = 26400 inch/min / 14 inch
w = 1885.7 rad/min
What is angular speed?When an object is in uniform circular motion, the angle described by the radius in each unit of time is known as angular speed. It is measured in units of (rad/s) (revolutions/s).
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Im on a test and i need the answer really bad please help me out
how can a cosmetologist make his or her clients feel more secure about the image that they present?
Answer:
They focus on the positive, by focusing on the positive the client feels better about himself and it builds more confidence.
WILL GIVE BRAINLEST HELPPPP
whats the answer giving brainliest answer
Answer:
C because its the only one that fits the question its asking. 12-6 8-4 4-2
Step-by-step explanation:
Leeza deposited $1,600 in a savings account with a simple interest rate of 4.5%.
How much interest will Leeza earn after 6 years if she makes no additional deposits
or withdrawals?
Question 10(Multiple Choice Worth 1 poi
(01.04 LC)
Solve for x: 2x - 2> 4x + 6.
Answer:
Step-by-step explanation:
(2x - 2) - 2x > (4x + 6) - 2x
-2 > 2x + 6
(-2) - 6 > (2x + 6) - 6
-8 > 2x
-8/2 > (2x)/2
-4 > x
Answer:
x < - 4
Step-by-step explanation:
2x - 2 > 4x + 6 ( subtract 4x from both sides )
- 2x - 2 > 6 ( add 2 to both sides )
- 2x > 8
divide both sides by - 2, reversing the symbol as a result of dividing by a negative quantity.
x < - 4
(7x-1)+(13x-19)=180 solve for x
Answer:
x = 10
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Step-by-step explanation:
Step 1: Define Equation
(7x - 1) + (13x - 19) = 180
Step 2: Solve for x
Combine like terms: 20x - 20 = 180Isolate x term: 20x = 200Isolate x: x = 10Step 3: Check
Plug in x into the original equation to verify it's a solution.
Substitute in x: (7(10) - 1) + (13(10) - 19) = 180Multiply: (70 - 1) + (130 - 19) = 180Subtract: 69 + 111 = 180Add: 180 = 180Here we see that 180 does indeed equal 180.
∴ x = 10 is the solution to the equation.
HELP!!!! I NEED IT ASAP!!!!
Answer:
27 and 28
Step-by-step explanation:
Let x = the first number
Let x + 1 = the second number
x + x + 1 = 55 Combine the x's
2x + 1 = 55 Subtract 1 from both sides.
2x = 54 Divide both sides by 2
x = 27 the second number would be 28
2 + 2x + 1 = 3 + 2 + 3
A one solution
B no solutions
C infinite solutions
Answer:
The correct answer is A. one solution.
The actual solution is x = 2.5.
Step-by-step explanation:
Here is the solution below:
Step 1: 2 + 2x + 1 = 3 + 2 + 3 <----- Here is the original problem.
Step 2: 2 - 2 + 2x + 1 - 1 = 8 - 2 - 1 <----- Subtract 1 and 2 from both sides.
Step 3: 2x = 5 <----- Simplify
Step 4: 2x/2 = 5/2 <---- Divide both sides by 2.
x = 2.5
Hope this helps! :D
A. One Solution
Step-by-step explanation:Isolate the variable by dividing each side by factors that don't contain the variable.
Exact Form: x=5/2
Decimal Form: x=2.5
Mixed Number Form: x=2 1/2
Find a quadratic function that includes the set of values below.
(0,6) (2,12) (3,9)
The equation of the parabola is y= ____
The quadratic function that includes the set of values is y = -2x^2 + 7x + 6
How to find a quadratic function that includes the set of values?The set of values is given as
(0,6) (2,12) (3,9)
A parabola is represented as
y = ax^2 + bx + c
At (0, 6), we have
6 = a(0)^2 + b(0) + c
This gives
c = 6
So, we have
y = ax^2 + bx + 6
At (2, 12), we have
12 = a(2)^2 + b(2) + 6
This gives
4a + 2b = 6
At (3, 9), we have
9 = a(3)^2 + b(3) + 6
This gives
9a + 3b = 3
Using a graphing tools, we have
a = -2 and b = 7
So, we have
y = -2x^2 + 7x + 6
Hence, the quadratic function that includes the set of values is y = -2x^2 + 7x + 6
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a wall is covered with 6 wood panels. each panel is a square with a side length of x feet. write an expression to represent the total area, in square feet, covered by the wood panels.
6x² is the total area, in square feet, covered by the wood panels.
What is area?
The region that an object's shape defines as its area. The area of a figure or any other two-dimensional geometric shape in a plane is how much space it occupies.A wall is covered with 6 wood panels. Each panel is a square with a side length of "X" feet.
So based on this, we can say that The expression to represent the total area, in square feet,
So, the wood panels is to be considered as the 6 × x² = 6x²
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Which two points have the same absolute value?
P Q R S
_______________
-1 0 1
Answer:
-1 and 1
Step-by-step explanation:
The price of a TV rose from $350 to $371 in one
month. By what percent did the TV price rise?
PLEASE HELP WILL MARK BRAINLIEST NEED THE SMARTEST PEOPLE!!!
Answer:
-430
Step-by-step explanation:
Which of the following is NOT always true of a function and its inverse?
The statement that is not always true of inverse functions is (d) f-1(x) is a function
What are inverse functions?Inverse functions are the opposite of an original equation. This means that for a function f(x), the inverse of the function f(x) is f-(x); it also represents the opposite function
How to determine the statement that is not always true of inverse functions?As mentioned above,
The inverse functions are the opposite of an original equation
This means that:
If a function is f(x), then the inverse if f-1(x)
However, all inverse equation are relations, but not all inverse equations are functions
This means that the statement that is not always true of inverse functions is (d) f-1(x) is a function
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