No, what Joe said isn't necessarily true. Though it is common that the product will be a 4 digit number, because you can use any number, like a large 4 digit number like 9999 or a large 1 digit number like 9, that isn't true. For instance: "9999 x 9" is 89991 which is 5 digits instead of 4 because "9999" is the biggest 4 digit number and "9" is the biggest "1" digit number.
A toll collector on a highway receives $8 for cars and $9 for buses. At the end of a 4-hour period, she collected $368. How many cars and buses passed through the toll booth during that period? Select ALL THAT APPLY: 40 cars and 5 buses!!37 cars and 8 buses!!22cars and 21 buses!!28 cars and 16 buses!!0 cars and 41 buses!!46 cars and 0buses!!4cars and 37 buses!! 10 cars and 32 buses!! 1car and 40 buses!!19 cars and 24 buses
Applying the concept of Algebra, the toll collector processed 40 cars and 5 buses during a 4-hour period. This is found by checking each option against the equations 8c + 9b = 368 and c + b = total number of vehicles (where c = cars and b = buses).
Explanation:To solve this problem, we need to find the number of cars and buses that make up the total toll collected, which is $368. We can set up a system of equations to solve for the two variables: number of cars (c) and number of buses (b).
So, we have two equations: 8c + 9b = 368 and c + b = total number of vehicles. By checking each option, only 40 cars and 5 buses match these equations, because 8*40 + 9*5 = 368.
So, the toll collector processed 40 cars and 5 buses during the 4 hour period.
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How many congruent triangles do the midsegments of an equilateral triangle partition the triangle into? Explain.
Answer:
4
Step-by-step explanation:
Let us consider an equilateral triangle ABC. Now, we will define midsegments:
A midsegment of a triangle is a segment that connects the midpoints of two sides of a triangle (here triangle ABC). This segment has two special properties. It is always parallel to the third side, and the length of the midsegment is half the length of the third side.
Refer the attached image:
Now, from the definition of midsegment we can see that:
[tex]PQ=\frac{1}{2}BC[/tex]
[tex]\therefore PQ=BR[/tex]
and PQ is also parallel to BR.
Now, again from the definition of midsegment we can see that:
[tex]QR=\frac{1}{2}AB[/tex]
[tex]\therefore QR=PB[/tex]
and QR is parallel to PB.
therefore, PQBR forms a parallelogram
And a diagonal of a parallelogram divides it into two congruent triangles.
Hence, triangle 2 (triangle PBR) is congruent to triangle 4(triangle PQR).
Similarly, triangle 3 (triangle QRC) and triangle 1 (triangle APQ) are congruent to triangle 4 (triangle PQR), Therefore, there are 4 congruent triangles formed when midsegments of an equilateral triangle partition the triangle.
The midsegments of an equilateral triangle partition it into four smaller congruent triangles, due to the Triangle Midsegment Theorem and the Third theorem of congruence for triangles.
When the midsegments of an equilateral triangle are drawn, they connect the midpoints of the sides of the triangle. These segments will each be parallel to one side of the triangle and half its length, according to the Triangle Midsegment Theorem. Drawing all three midsegments partitions the equilateral triangle into four congruent smaller triangles. Each smaller triangle will be similar to the original equilateral triangle.
By the Third theorem of congruence for triangles (which is often referred to as SSS or side-side-side), if three sides of one triangle are congruent respectively to the corresponding sides of another triangle, the two triangles are congruent. In this case, each smaller triangle formed by the midsegments shares a side with the original triangle and has the other two sides equal in length to the midsegments, which are congruent to each other by construction.
Therefore, all four smaller triangles are congruent to each other.
If f(x)=5x-3 and f(x)=7, what is the value of x?
5x - 3 = 7
Add 3 to both sides.
5x = 10
Divide both sides by 5.
x = 2
The value of x is 2.
What is the value of f?
6f-12= -4f+6
[tex]6f-12=-4f+6\qquad|\text{add 12 to both sides}\\\\6f=-4f+18\qquad|\text{add 4f to both sides}\\\\10f=18\qquad|\text{divide both sides by 10}\\\\\boxed{f=1.8}[/tex]
what is the slope of the line? (Slope from equation)
7x+2y=5
thanks.
Answer:
The slope is -7/2.
Step-by-step explanation:
Convert to slope-intercept form (y = mx + b where m = the slope)
7x + 2y = 5
2y = -7x + 5
Divide both sides by 2:-
y = (-7/2)x + 5/2
so slope m = -7/2
Solve each system by substitution. Show ALL work!!!!
1) y=2x-1
6x-3y=7
Solution:
Work:
To solve the given system of equations by substitution, 'y' from the first equation is substituted into the second, resulting in x = 4/3. Substituting this into the first equation yields y = 5/3. Therefore, the solution to the system is x = 4/3, y = 5/3.
Explanation:To solve the given system of equations by substitution, we will start with the first equation y = 2x - 1 and substitute it into the second equation 6x - 3y = 7.
Substituting 'y' from the first equation into the second, we get: 6x - 3(2x - 1) = 7.
Solving this, we find 'x': 6x - 6x + 3 = 7 => x = 7/3 = 4/3.
Next, we substitute 'x' into the first equation to find 'y': y = 2(4/3) - 1 = 8/3 - 1 = 5/3.
So, the solution to the system of equations is x = 4/3, y = 5/3.
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find the slope of the line containing the following two points
The slope is -22/9. Use the formula (y2-y1)/(x2-x1)
(-1/3 +4)/(-1/3-7/6)
How many solutions does the equation have?
9z+10=1−3(5−3z)
9z + 10 = 1 - 3(5 - 3z) use distributive property
9z + 10 = 1 + (-3)(5) + (-3)(-3z)
9z + 10 = 1 - 15 + 9z
9z + 10 = -14 + 9z subtract 9z from both sides
10 = -14 FALSE
NO SOLUTION
Answer: zero solutions.
Answer:
[tex] \sf \: z = no \: solution[/tex]
Step-by-step explanation:
Given equation,
→ 9z + 10 = 1 - 3(5 - 3z)
Now the value of z will be,
→ 9z + 10 = 1 - 3(5 - 3z)
→ 9z + 10 - 1 = -15 + 9z
→ 9z + 9 = -15 + 9z
→ 9z - 9z = -15 - 9
→ 0 = -24
→ [ z = no solution ]
Hence, there is no solution.
Tiffany has $54. She is shopping for umbrellas that cost $12 each. She writes the following equation to model the situation. Place Value Chart
Answer:
4 umbrellas
Step-by-step explanation:
Number of Umbrellas Total Money
1 $12
2 $24
3 $36
4 $48
She can't go over $48 because $48 + $12 is $60, which is more than she has ($54). So the max amount of umbrellas she can buy is 4.
what is t(6) for the function t(n)=0.009n
a)0.054
b)0.0096
c)6.009
Name two points on a line that has a slope of 5/8
The two points on a line such that it has a slope 5/8 is:
(0,0) and (8,5)
Step-by-step explanation:We know that the slope of a line is the ratio of the change in the y-coordinates to the change in the x-coordinates.
Now, let us assume that the equation of a line with slope 5/8 be given by:
[tex]y=\dfrac{5}{8}x[/tex]
Hence, the point (0,0) lie on the line.
( since, when x=0 we have:
[tex]y=\dfrac{5}{8}\times 0\\\\y=0[/tex] )
and also the point (8,5) lie on the line.
( when x=8 we have:
[tex]y=\dfrac{5}{8}\times 8\\\\y=5[/tex] )
WILL GIVE BRAINLIEST. is my answer correct
I’m pretty sure you are
which statement compares the graphs of f(x) and g(x) over the interval [0, 5]?
A) The graph of f(x) always exceeds the graph of g(x) over the interval [0, 5]
B) The graph of g(x) always exceeds the graph of f(x) over the interval [0, 5]
C) The graph of f(x) exceeds the graph of g(x) over the interval [0, 4], the graphs intersect at a point between 4 and 5, and then the graph of g(x) exceeds the graph of f(x)
D) The graph of g(x) exceeds the graph of g(x) over the interval [0, 4], the graphs intersect at a point between 4 and 5, and then the graph of f(x) exceeds the graph of g(x)
we can see that
For x is 0, 1, 2, 3 ,4
f(x) is 0 , 1 , 4, 9 , 16
g(x) is -2 , -1 , 1 , 5 , 13
so, g(x) is greater than f(x) for x is 0, 1, 2, 3 ,4
It means that f(x) exceeds g(x) on [0,4]
But for x=5
f(x) is 25
g(x) is 29
Here, we can see that g(x) exceeds f(x) at x=5
so, there must be intersection point between x=4 and x=5
so, option-C.........Answer
Each option describes different behaviors and relationships between the two functions over the interval [0, 5]. Without further details, we can only conceptualize the scenarios provided.
To compare the graphs of f(x) and g(x) over the interval [0, 5], we can evaluate the options provided:
Option A: The graph of f(x) always exceeds the graph of g(x) over the interval [0, 5]Option B: The graph of g(x) always exceeds the graph of f(x) over the interval [0, 5]Option C: The graph of f(x) exceeds the graph of g(x) over the interval [0, 4], the graphs intersect at a point between 4 and 5, and then the graph of g(x) exceeds the graph of f(x)Option D: The graph of g(x) exceeds the graph of f(x) over the interval [0, 4], the graphs intersect at a point between 4 and 5, and then the graph of f(x) exceeds the graph of g(x)Without the exact equations or a graph to analyze, we cannot definitively determine which option is correct. However, we can conceptualize the scenarios described:
Option A suggests f(x) is consistently greater than g(x) throughout the interval. Option B suggests the opposite. Option C introduces an intersection point, where f(x) transitions from being greater to less than g(x). Option D indicates g(x) is initially greater, with a reversal after an intersection between 4 and 5.
If we had the graphs or more specific information, we could more precisely identify the correct statement.
Andrew deposited $500 in a savings account that offers an interest rate of 6.5%, compounded continuously. Andrew's initial deposit will grow to $543 in ___ months.
Answer:
The answer is 15 months.
Step-by-step explanation:
p = $500
r = 6.5% or 0.065
A = $543
t = ?
The formula to be used here is :
[tex]A=pe^rt[/tex]
[tex]t=(log(A/p)/log(e))/r[/tex]
Putting the values in formula we get:
[tex]t=(log(543/500)/log(e))/0.065[/tex]
[tex]t=(log(1.086)/log(e))/0.065[/tex]
This gives t = 1.3 years
In months it will be 1 year(12 months) + 3 months = 15 months.
Hence, the answer is 15 months.
Answer:
15 months
Step-by-step explanation:
Rewrite the fractions 2/5 and 4/15 as fractions with a least common denominator
The two fractions with the common denominator will be 6/ 15 and 4 / 15.
What is a fraction?The fraction is defined as the division of the whole part into an equal number of parts.
The two fractions are 2 / 5 and 4 / 15 will be converted into the same common denominator as;-
For fraction 2 / 5 multiply it by 3 in both the numerator and the denominator.
= ( 2 x 3 ) / ( 5 x 3 )
= ( 6 / 15 )
Therefore two fractions with the common denominator will be 6/ 15 and 4 / 15.
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Is (2,10) a solution of the equation y = 9x
This line is already in slope-intercept form.
The slope of the line is 9, and the y-intercept is 0.
Because of this, we can find every y value for any x value simply by replacing x with the value of the x coordinate.
By replacing x with 2, we can see what the y coordinate would be when x is 2.
9(2) = 18
The y value would be 18, which is not 10, meaning (2, 10) is not a solution to the equation.
The point (2,10) is not a solution to the equation y = 9x because when x is substituted into the equation, it results in y = 18, not y = 10 as in the point.
To determine if the point (2,10) is a solution to the equation y = 9x, we need to substitute the x-value from the point into the equation and see if the corresponding y-value matches the one in the point. Let's substitute x = 2 into the equation:
y = 9 x 2
y = 18
For the point (2,10), the y-value is 10, which does not equal the calculated y-value of 18. Therefore, the point (2,10) is not a solution to the equation y = 9x.
Use the graph to determine the solution of the inequality |x + 1| + 2 > 5.
Use the graph to determine the solution of the inequality |x + 1| + 2 > 5.
To graph this , first we make the absolute function alone
|x + 1| + 2 > 5
to make absolute function alone we subtract 2 from both sides
|x + 1| > 3
x+1 inside the absolute function . so x=-1
From -1, move 3 units to the right and 3 units to the left.
For x>2 , shade the graph to the right
For x< -4, shade the graph to the left
The graph is attached below
The solution to the inequality is x<-4 and x>2
Answer:
Its A on E2020
Step-by-step explanation:
if you know two points on a line, how can you find the right the rate of change of the variables being graphed?
You divide the difference in y-coordinates by the diffrence in x-coordinates. Or whatever the variables are.
Lets say the coordinates of the two points are (a,b) and (c,d). Then:
Rate of change is "rise/run" = (b - d)/(c - a) = (d - b)/(a - c)
Which choice solves the problem?
1467÷7=
A) 29 with a remainder of 4
B) 207 with a remainder of 4
C) 209
D) 209 with a remainder of 4
D) 209 with a remainder of 4
The question is about the division of 1467 by 7. The answer is '209 with a remainder of 4'.
Explanation:This question is about division in mathematics. To solve this, we will divide 1467 by 7. Division is really repeated subtraction. You subtract 7 from 1467 as many times as you can until you get a number smaller than 7. That number is called the 'remainder', and the number of times you could subtract is the 'result' of the division.
After the division, the quotient is 209 and the remainder is 4. Therefore, the correct option is 'D) 209 with a remainder of 4'.
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What is 12x - 5 = 127
Here is your equation:
[tex]12x-5=127[/tex]
You're trying to find x, and to do that, the variable must be alone. That means you need to cancel out everything with it. The only thing with the variable 12x is -5. To cancel that out, you have to do the opposite of it, which is +5. Add 5 to both sides.
[tex]12x-5+5=127+5 \\12x=132[/tex]
12x(12 times x) is equal to 132. You need to find x. You have to do the opposite of times 12, which is divide by 12. Divide both sides by 12.
[tex]\frac{12x}{12} = \frac{132}{12} \\ \\x=11[/tex]
Your answer is x is equal to 11 ; x = 11
If you have any questions, feel free to ask in the comments! :)
chris is 3 years older than jacob. Nathan is 18 years old. two years ago the sum of all their ages was 59 years old how old is jacob?
Today 2 years ago
Chris: x + 3 (x + 3) - 2 = x + 1
Nathan: 18 (18) - 2 = 16
Jacob: x (x) - 2 = x - 2
Chris + Nathan + Jacob = sum
x + 1 + 16 + x - 2 = 59
2x - 15 = 59 added like terms (x and x) and (1, 16, and -2)
2x = 74 added 15 to both sides
x = 37 divided both sides by 2
Answer: Jacob is 37 yrs old
A dog takes 3 steps to walk the same distance for which a cat takes 4 steps. If 1 step of the dog covers 1/2 door how many feet will the cat cover on 24 steps?
Answer:
9 feet will the cat cover on 24 steps.
Step-by-step explanation:
Given: A dog takes 3 steps to walk the same distance for which a cat takes 4 steps.
⇒ 3 steps of dog=4 steps of Cat
If 1 step of the dogs cover [tex]\frac{1}{2}[/tex] feet
then,
4 steps of cat=3 steps of dog
24 steps of cat=[tex]\frac{3}{4}\times(24)[/tex]=18 steps of dog
Also, 1 step of the dogs cover=[tex]\frac{1}{2}[/tex] feet
18 steps of the dogs cover=9 feet
therefore, 24 steps of cat will cover 9 feet .
Which sequence of transformations creates a similar, but not congruent, triangle?
A Rotation and translation
B Dilation and rotation
C Reflection and rotation
D Translation and reflection
Answer:
It would be B.
Step-by-step explanation:
Dilation is the only transformation that is NOT congruent. It is similar.
is 20x9x5 a associative or distributive property?
Can someone find the unit rate of $46 for 5 toys, and add an explanation and how to do it?!?!? ASAP HELP!!
Not sure if I am right but I looked online for you and it said divide the numerator and the denominator by the given rate so I guess you do 46 divided by 5 I'm sorry if I am wrong nd let me know
The unit rate of $46 for 5 toys is calculated by dividing the total cost by the number of toys, resulting in $9.20 per toy.
This question demands complete basic understanding of mathematical concepts in general and division in particular.
To find the unit rate of $46 for 5 toys, you divide the total cost by the number of toys. This calculation will give you the cost of one toy. Here's how it's done step-by-step:
Write down the total cost for all the toys, which is $46.Write down the total number of toys, which is 5.Divide the total cost by the number of toys to find the unit rate: $46 / 5 toys = $9.20 per toy.So, as per the above explaination, the unit rate is $9.20 per toy.
A roller coaster car rapidly picks up speed as it rolls doen a slope. As it starts down the slope, it's speed is 4m/s. But 3 seconds later, at the bottom of the slope, it's speed is 22m/s. What is its average acceleration?
The average is 18m/s.
The average acceleration of the roller coaster car is [tex]\( 6\, \text{m/s}^2 \)[/tex].
The average acceleration of the roller coaster car is calculated using the formula:
[tex]\[ a = \frac{{v_f - v_i}}{{\Delta t}} \][/tex]
where [tex]\( v_f \)[/tex] is the final velocity, [tex]\( v_i \)[/tex] is the initial velocity, and [tex]\( \Delta t \)[/tex] is the time interval over which the acceleration occurs.
Given:
[tex]- Initial velocity (\( v_i \)) = 4 m/s \\- Final velocity (\( v_f \)) = 22 m/s\\ - Time interval (\( \Delta t \)) = 3 s[/tex]
Plugging in the values:
[tex]\[ a = \frac{{22\, \text{m/s} - 4\, \text{m/s}}}{{3\, \text{s}}} \] \[ a = \frac{{18\, \text{m/s}}}{{3\, \text{s}}} \] \[ a = 6\, \text{m/s}^2 \][/tex]
What is 3/8 + b/3= 5/12
Final answer:
To solve the equation 3/8 + b/3 = 5/12 for b, we find a common denominator, combine the fractions, and then isolate and solve for b. The solution for b is 1/8.
Explanation:
The equation presented by the student is 3/8 + b/3 = 5/12. To solve for b, we must first get a common denominator for the fractions to combine them. In this case, the common denominator is 24, since it is the least common multiple of 8 and 3. Multiplying each term by 24 yields:
(3/8)*24 + (b/3)*24 = (5/12)*24
9 + 8b = 10
Next, we isolate the variable b by subtracting 9 from both sides of the equation:
8b = 10 - 9
8b = 1
Finally, divide both sides by 8 to solve for b:
b = 1/8
Thus, the value of b that satisfies the given equation is 1/8.
Becky gets $5.00 a week for chores, and helps with chores for 4 weeks. If Becky wants to spend only half of her money, how much will she have left to save?
$5.00 x 4 = $20.00.
$20.00 divided by 2 = $10.00
She will have $10.00 to save.
Hope I helped!
Good Luck!
examine the diagram on the right and explain how it illustrates the value of n^+n/2
the key is to write [tex]n^2 + n[/tex] as [tex]n(n+1)[/tex] which can be easily seen as an area of a rectangle with one side length n and the other (n+1). That explains the rectangle made of dots - 3 x 4
Now you only have half of them because of the 1/2. So that explains the lower "triangle" of dots being greyed out - they do not count in the area (upper triangle). So the count of the dark dots corresponds to the original expression.
For n=5 you can draw a similar rectangular matrix with 5 x 6 dots. And count only the upper triangular part.
finding terms of an arithmetic sequence with a recursive formula
a1 =12 an= an-1+7
Hey there!!
Recursive formula :
... a( n ) = a ( n - 1 ) + 7
The first term is 12
To find the second term, we will need to substitute 2 in place of ' n '
2 term :
... a( 2 ) = a ( 2 - 1 ) + 7
... a( 2 ) = a( 1 ) + 7
We know a( 1 ) = 12
... a( 2 ) = 12 + 7
... 19 is the second term and we will need to use this to find the other terms.
Hope my answer helps!