Answer:
1
Step-by-step explanation:
Karen recorded the numbers of people getting off her tram. The mean number for 10 stops is 6.3. After the tram stops at the 11th stop, the mean is 8. How many people got off the tram at the 11th stop?
Answer:
32 people got off
Step-by-step explanation:For the 10th stop, we can get the total number of people that have gotten off
Mathematically, this is the product of the mean and the number of stops
= 10 * 6.3 = 63 people
Now, for the 11th stop, the total becomes
11 * 8.6 = 94.6
A parking meter charges $0.25 for the first 30 minutes and $0.1 for every additional 5 minutes. If Megan is charged $1.35 for parking at this specific meter, how many minutes did she park for?
Answer:
I got 140 minutes
Step-by-step explanation:
(SAT prep) Find the value of x
Answer:
x=120 degrees
Step-by-step explanation:
angle below angle x=y
y=40 because it is corresponding congruent angle
x+y+20=180
x+40+20=180
x=120
Answer:
120
Step-by-step explanation:
two lines are parallel
20+40+x=180
x=180-60
x=120
please show ur steps thx
17 + 4x = 94. Solve for x.
______________________________
1.) Subtract 17 from both sides:[tex]17-17=[/tex] Cancels Out[tex]94-17=77[/tex]
- We do this to get 1 number left over at the end sum of the equation. To do this you do the opposite of what you see. In this case we have a positive 17, so you subtract 17 on each side.
2.) Divide both sides by 4:[tex]4x[/tex] ÷ [tex]4=x[/tex][tex]77[/tex] ÷ [tex]4=19.25[/tex]
- We do this to get x alone. To do this you do the opposite of what you see. In this case we have [tex]4(x)[/tex] being multiplied, so you divide by 4 on each side.
So your answer is [tex]\bold{19.25}[/tex].
______________________________
Answer:
x= 77/4
Step-by-step explanation:
(You will first have to rearrange terms)
17+4x-94
4x+17=94
(Now you will have to subtract 17 from both sides of the equation.)
4x+17=49
4x+17-17=94-17
(You will have to simplify now)
4x=77
(You will have to divide from both sides of the equation by the same term.)
4x=77
4x=77
--- --- (Divide by 4.)
4 4
(you will now simplify)
x=77/4
and that's how you get your answer.
I hope this helps. :)
Explain the three different types of solutions you can get when solving a system of
equations.
Answer:
There are three possible outcomes for a system of linear equations: one unique solution, infinitely many solutions, and no solution.
Step-by-step explanation:
9514 1404 393
Answer:
no solutionsa finite non-zero number of solutionsinfinite solutionsStep-by-step explanation:
1. No Solutions
This case arises when the equations are inconsistent. No values of the variables can satisfy all of the equations. An example is ...
y = xy = x+1__
2. Finite Number of Solutions
The number of distinct solutions depends on the degree of the system and the domain being considered. For example, an n-th degree polynomial equation in one variable will always have n solutions in the domain of complex numbers. However, it may or may not have any real-number solutions. (The question here has no context, so we have to assume it is about any system of equations of any degree or nature (rational, polynomial, exponential, mixed, or other.))
__
3. Infinite solutions
An under-specified system, such as a system of 3 equations in 4 variables, may have an infinite number of solutions. In such a system, one or more of the variables may be allowed to assume any value. Systems that have dependent equations will fall into this category.
Can you please solve -x^2+2x+3=0?
Answer:
x = -1 or x = 3
Step-by-step explanation:
One of those 2
Are the following functions linear or nonlinear? Drag the tiles to complete the statements.
Tiles may be used once, more than once, or not at all.
Function A
x 3 6 9 12 15
y 5 10 15 20 25
Is function a linear or nonlinear is function B linear or nonlinear. Function B is the picture
Step-by-step explanation:
Function A Linear
Function A LinearFunction B (on the graph) nonlinear (exponential function)
help me plz and thx :)
Answer:
I am sure it is false. becuase a dependent variable is something you measure and you have to count the eggs.
Solve: 2x + 3y = 1
y = -23 +11
Answer:
x = 18.5
y = -12
Step-by-step explanation:
First, solve y:
y = -23 + 11
y = -12
Then, solve the main problem:
2x + 3y = 1
(Substitute y)
2x + -36 = 1
2x - 36 = 1
2x = 1 + 36 = 37
x = 37 / 2
x = 18.5
Question 7 What is (-29x= 14) + (-15x + 50)?
Hello! I believe your answer would be:
-32/7, or as a mixed number, -4 4/7
hope this helped!
Ramon’s teacher wrote the following table on the board
She then asked the class to write a rule for the nth term of the geometric sequence represented on the table, using the format an=a(r)^n-1
Select the values for a and r that Ramon should use in order to correctly write the rule for the nth term.
an= ___(___)^n-1
—> number choices
-3
-1/3
1/3
3
9
27
81
please only respond if you know the answer :)
Answer:
23
Step-by-step explanation:
i think if not correct sorry
A line passes through points with coordinates
(3,7) and (-2,-3). What is the equation of the
line?
1) y = 2x + 1
2) y = 2x + 4
3) y = -2x +1
4) y = = -2x + 13
Answer:
y = 2x + 1
Step-by-step explanation:
[tex]m = \frac{-3 - 7}{-2 - 3}\\ = \frac{-10}{-5}= 2\\y = mx + b \\y = 2x + b\\7 = 2(3) + b\ -> 7 = 6 + b \\b = 1 \\y = 2x + 1[/tex]
Use the distributive property to find the equivalent expression.
9(3 + 7k) =
+
Answer:
63k + 27
Step-by-step explanation:
9(3) + 9(7k)
27 + 63k
Write a rule for the linear function shown in the graph.
y = –x + 4
y = x – 4
y = 3x + 1
y = - 4/1x -1
Answer:
Step-by-step explanation:
it doesn't show anything
Which rule explains why these triangles are congruent?
С
F
А
B
G
ASA
SSS
AAS
SAS
help urgently please
Answer:
Side Angle Side
Step-by-step explanation:
solve for the missing side: simplify the radical
Answer:
[tex]x=8\sqrt{5}[/tex]
Step-by-step explanation:
I will assume the following:
You know how to use the quadratic formulaYou know how to simplify radicalsYou know how to use the pythagorean theorem.The challenge of this exercise comes from using the pythagorean theorem and setting up a few equations.
Given that we have a segment 36 units long and another segment that is 16, it is trivial to get the other segment, 20. Additionally, there are two sides that I want to name so that way I can make a couple of substitutions. I will call these side a and side b. (see attachment 1)
Now comes with setting up three equations. I will start with the two smaller triangles, using side a and side b. See attachments 2 and 3.
Now with the big triangle. I will set up one last equation. See attachment 4.
Given what we know about attachment 2 and 3, we can make two substitutions. See attachment 5. I assume you know how to do the rest and arrive at your only real solution.
Pls help me someone!!!
Answer:
n^2(radical)7
Step-by-step explanation:
You have to find the square root of all the components separately. 7 is not a perfect square (one number*itself = perfect square, ex 4 is the perfect square of 2 because 2*2=4) but the n^4 can be simplified and brought outside of the radical. When finding the square root of variables with exponents they have to come out in pairs to create that "perfect square." Therefore when you move a variable, you basically divide the exponent by 2. so n^4 inside the radical becomes n^2 outside of the radical, leaving the problem itself to become n^2 (radical) 7.
Marcelo jogs at a speed of 7 miles per hour when there are no hills. He plans to jog up a mountain road which will cause his speed to decrease by r miles per hour. Which of the following expressions represents the time, t, in hours it will take him to jog 13 miles up the mountain road?
a. t=13/7r
b. t=7+r/13
c.t=13-r/7
d. t=13/7+r
Answer:
2.3 hours rounded I suppose.
Step-by-step explanation:
You have jogged 5 miles from the park at a rate of r miles per hour. On your way back to the park your average speed increases by 1 mile per hour.
a. Write an expression for the time t (in hours) it takes to jog 5 miles
from the park as a function of your average speed r (in miles per hour) ___________
b. When you run back to the park, your average speed increases by 1 mph.
Write an expression representing your new speed. ___________
c. Write an expression for the time t(in hours) it takes to jog 5 miles
back to the park. ___________
d. Use your answers to parts a and c to write an expression that gives the total jogging time T (in hours) as a function of your average speed r (in miles per hour) when you are jogging away from the park. Write your answer as a single rational expression.
e. Find the total jogging time if you jogged away from the park at an average speed (r) of 4 miles per hour. Round your answer to the nearest tenth.
hours or 135 minutes
2.3 hours rounded I suppose.
Offering Brainleast if you explain your answer
X to the power of 3 = 125
what is X?
Answer:
x = 5
Step-by-step explanation:
x³ = 125
x = √125
x = 5
plz follow me
the menu on the counter at marshalls milkshakes measures 8.5 inches by 11 inches, the large overhead menu ok the wall measures 33 inches by 25.5. are they proportional?
A group of students are going on a trip and the trip costs $36.50 per student which includes $9.50 for lunch, an entrance ticket and a gift coupon. The gift coupon costs $50 for the entrance ticket. The cost of an entrance ticket is
A) $27.00
B) $25.00
C) $18.00
D) $13.50
Answer:
The answer is D) $13.50
Step-by-step explanation:
So first what you're gonna do it subtract $9.50 from $36.50 which will get you to $27.00.
Then you'll have to figure out what half of $27.00 is.
That will get you to the answer of D) $13.50
Decide whether each of the following pairs of expressions are equivalent for all values of x. If they are equivalent, show how you can be sure. If they are not, justify your reasoning completely.
a. (x - 5)(2x + 7) and 2x^2 - 3x - 35
b. 3(x - 2)^2 + 6 and 3x² + 18
pleaze help the question is in the picture
Answer:
A because we need the amount of time she played soccer for so we need to add the 2 days together
Step-by-step explanation:
Please help me with this
Answer:
m=9 cm; n=4 cm
Step-by-step explanation:
The area of the rectangle is m*n, and the area of the square is 6*6. We are told that the areas of the rectangle and square equal each other, so:
[tex]m*n=36[/tex]
We are told that m is 5 cm longer than n, so we know that:
[tex]m = 5+n[/tex]
Therefore, we can solve for n using substitution.
[tex]m*n=36\\(5+n)n = 36\\5n+n^2 = 36\\n^2 + 5n -36 = 0\\(n+9)(n-4)=0[/tex]
We now have two answers for n: -9 and 4. However, the side length cannot be negative; that simply wouldn't make any sense. Therefore, n = 4.
Next, using the same equation, plug in 4 for n and solve for m.
[tex]m*n=36\\m*4=36\\m=9[/tex]
1. Find the cost of 3.5 yards of fabric if the fabric is priced at $6.00 per yard.
$210.00
$1.71
$21.00
$17.10
$21.00
Step-by-step explanation:
if 1 yard equal 6 dollars
do 6 times 3 = 18
and half of 6 is 3
add 18+3=21 dollars
An art gallery had 12 paintings for sale.
A customer bought 3 paintings.
What fraction of the paintings are still for sale?
Answer:
3/4
Step-by-step explanation:
what is the solution of x + 6 < 5
A) x < 11
B) x > 11
C) x < -1
D) x > -1
Answer:
C. x < - 1
Step-by-step explanation:
1. Subtract 6 from both sides.
[tex]x < 5 - 6[/tex]
2. Simplify 5 - 6 to -1.
[tex]x < - 1[/tex]
Therefor, the answer is, x < -1.
Use the distributive property to remove the parentheses.
-4(p - 212) = 44
Solve for the remaining two step equation.
I need this very quickly
Answer:
P = 201.
Step-by-step explanation:
In mathematics, distributivity is a property of binary operations in which the multiplication is distributed, dividing the same multiplier by the different multipliers to obtain the result.
Thus, to solve the equation -4 (P - 212) = 44 the following calculation must be performed:
-4 (P - 212) = 44
(-4 x P) - (-4 x 212) = 44
-4P - (-848) = 44
-4P + 848 = 44
-4P = 44 - 848
-4P = -804
P = -804 / -4
P = 201
Which value of x makes the equation 0.75(x + 20) = 2 + 0.5(x - 2) true?
A. -64
B.64
C. 56
D.-56
The value of x for which equation 0.75(x + 20) = 2 + 0.5(x - 2) becomes true is equal to -56.
An equation is given which is 0.75(x + 20) = 2 + 0.5(x - 2).
We have to find out the value of x for which the equation becomes true.
What do you mean by algebraic expressions ?
The algebraic expressions are those which are made up of variables, constants and algebraic operations i.e., addition, subtraction, etc.
As per the question ;
The equation given is 0.75(x + 20) = 2 + 0.5(x - 2)
Let's solve to get the value of x.
⇒ 0.75(x + 20) = 2 + 0.5(x - 2)
⇒ 0.75x + 15 = 2 + 0.5 x - 1
⇒ 0.75x - 0.5x = 1 - 15
⇒ 0.25x = - 14
⇒ x = -14 ÷ 0.25
⇒ x = - 56
Let's check ;
0.75(x + 20) = 2 + 0.5(x - 2)
0.75 ( -56 + 20 ) = 2 + 0.5 ( -56 - 2 )
(0.75 × -56) + (0.75 × 20) = 2 + (0.5 × -56) + (0.5 × -2)
-42 + 15 = 2 -28 - 1
-27 = -27
Both sides are equal for value of x = -56.
Thus , the value of x for which equation 0.75(x + 20) = 2 + 0.5(x - 2) becomes true is equal to -56.
To learn more about algebraic expressions click here ;
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