Answer: The function that models the distance they drive is
f(x) = 50x + 20 where x is the time in hours
reasonable domain: 0 ≤ x ≤ 3
Step-by-step explanation:
examples:
95 = 50(1.5) + 20 After driving another hour and a half, they will have driven a total of 95 miles.
120 = 50(2) + 20 This means that after 2 more hours they will reach their destination.
There is a little ambiguity in the question. The function could be written as if they are starting out. f(x) = 50t
20 = 50(.4) At 50 mph it took .4 hours to go 20 miles.
120 = 5(2.4) The whole trip took 2.4 hours.
P(x) = 2(x + 6)(x+3)(x - 5)
Rewrite polynomial P(x) in standard form.
Answer:
skkrtt skkrttt
Step-by-step explanation:
Number 1 please ITS URGENT HELP PLSPLS
Answer:
The area of B is 8 cm²
Step-by-step explanation:
From the diagram, we can tell that the scale factor is 2 because the length of A is 6 cm and the length of B is 12 cm so the scale factor is 2. Since diagram A's area is 4 cm², all we need to do is multiply the diagram A's area by 2. That gives diagram B's area which is 8 cm²
how many solutions does this equation have?
7(2+5x)=3x+14
Answer:
none
Step-by-step explanation:
If you use the distributive property, you get 14 + 35x = 3x + 14. Then, subtract 3x from both sides to get 14+32x=14. Subtract 14 from both sides to get 32x= 0. These aren't equivalent, so there are no real solutions. Hope this helps!
The equation has only one solution which is equal to 0
What are linear equations?Linear equations help in representing the relationship between variables such as x, y, and z, and are expressed in exponents of one degree. In these linear equations, we use algebra, starting from the basics such as the addition and subtraction of algebraic expressions.
Given: The system of linear equations as 7(2+5x)=3x+14
simplifying the equation we get
7(2+5x)=3x+14
14+35x=3x+14
32x=0
x=0
Hence, The equation has only one solution which is equal to 0
Learn more about linear equations here:
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I am going to keep this simple and I am going to help people out who need points. What is 4 x 9?
Answer:
36
Step-by-step explanation:
Gi dont understand how to find Which ordered pair is a solution of the equation? y=8x+3
Answer:
(1, 11 ) is a solution
Step-by-step explanation:
To obtain a solution, choose any value of x, substitute into the equation and evaluate for y, that is
choose x = 1, then
y = 8(1) + 3 = 8 + 3 = 11
Thus (1, 11 ) is a solution
choose x = - 2 , then
y = 8(- 2) + 3 = - 16 + 3 = - 13
Thus (- 2, - 13 ) is also a solution
Lets go over the solutions.
Let's start with (1, 11). After substituting x = 1 and y = 11, it results in the equation 11 = 11, which is a true statement. Hence, this is one solution.
Now, let's look at (-1 -5). After substituting x = -1 and y = -5, it results in the equation -5 = -5, which is also a true statement. So, this being said, (-1, -5) would also be a solution.
Hence, our two solutions are:
Both [tex](1, 11)[/tex] and [tex](-1, -5)[/tex].
Hope this helps!
Use the algebra tiles to model x – 3. Then complete the statements. The variable is represented by Subtracting three is represented by . The tiles represent an unknown number.
Whoever can the question in 1 minute i will vote them BRAINLIest
Answer:
1.one orange x tile 2.three blue-tiles 3.subtracting three from
Step-by-step explanation:
I got it right have a nice day :)
Help...................
Answer:
The first one is 3/1 or 3 and the second is 3 1/2.
Step-by-step explanation:
can someone help me with this
Answer:
A, B, C
Step-by-step explanation:
just put it into the formula a^2+b^2=c^2
a) 12^2+16^2
= 144+256
= 400 = 20^2
b) 4.5^2+6^2
= 20.25+36
= 56.25 = 7.5^2
c) 5^2+12^2
= 25+144
= 169 = 13^2
The next two dont match
CAN SOMEONE HELP WOTH THISPLS RIGHT ANSWER GETS BRAINLIEST Q4
Answer: yes
Step-by-step explanation:
Answer:
a. no
b. yes
not sure about the rest though
Wha is 3x+3y=-9 in standard to slope intercept form simplified, thank you!
Answer
Step-by-step explanation:
The answer would be y=-x-3. 3x+3y=-9 is in standard form and you want it to be in y=mx=b form (slope-int) so subtract 3x by both sides. Now, you have 3y=-3x-9. Divide 3 to both sides, now you will get y=-x-3.
can you plz help me with this 2.25f+5=13.5f+14
Answer:
F=10
Step-by-step explanation:
Add 13.5 and 14 to get 27.5.
2.25f+5=27.5
Subtract 5 from both sides.
2.25f=27.5−5
Subtract 5 from 27.5 to get 22.5.
2.25f=22.5
Divide both sides by 2.25.
f=
2.25
22.5
Expand
2.25
22.5
=10 by multiplying both numerator and the denominator by 100.
f=
225
2250
Divide 2250 by 225 to get 10.
f=10
TRY TO ANSWER THIS FAST
Answer:
3/4(8-5y)
Step-by-step explanation:
Just like the first one
What is the number a solution of 6x-3>10?
Answer:
x > 1.167 (rounded to the nearest thousandth)
Step-by-step explanation:
Original Equation:
6x - 3 > 10
Add 3 to both sides
6x > 7
Divide both sides by 6
x > 1.1666666. . .
x > 1.167 (rounded to the nearest thousandth)
Hope I helped :)
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If a system of equations has one solution, what does the graph look like?
O parallel lines
O intersecting lines
O skew lines
O the same line
Juan is saving money to buy a game. So far he has saved ,$12 which is three-fourths of the total cost of the game. How much does the game cost?
Answer:
$16 :)
Step-by-step explanation:
what is the slope of (4, -4) and (-12, 4)
Answer:
The slope would be -1/2.
1. The line through A and B has a slope = _____ and y-intercept = _____
2. Write an equation for this line. ________
Answer:
1. slope= 1/2; y intercept=3
2. y= 1/2x+3
Step-by-step explanation:
The slope is equal to the y value of b minus the y value of a OVER the x value of b minus the x value of b. This simplifies to 1/2.
If the slope is 1/2, you can see that for every 1 that the line rises, its x value increases by 2. Since you know the when the x value is 2, the y value is 4, decreasing the x value by 2 (making it 0) would make the y value 3.
name the following line 6 different ways
Answer:
what line??
Step-by-step explanation:
what is the slope of the line in the graph?
Answer:
It is one. I believe, sorry if i'm wrong.
Step-by-step explanation:
Answer:
y= x +1
Step-by-step explanation:
You could use the slope formula y2-y1/x2-x1, what I did was I took the og equation y=x and I noticed it was vertically shifted by 1. Thus, y=x+1
prove the two triangles are similar
use photo for details
Answer:
the sides are congruent.
In response to a gss question in 2006 about the number of hours spent per day watching television, the responses by the fifteen subjects who identified themselves as Buddhist were 0, 0, 0, 1, 1, 1, 2, 2, 2, 2, 2, 3, 4, 4, and 5. For these fifteen subjects, the mean number of hours spent per day watching television is 1.93 hours. What is the standard error of this mean estimate?
Answer:
Standard error = 0.4
Step-by-step explanation:
Step 1
We find the Standard Deviation
The formula = √(x - mean)/n - 1
n = 15
Mean = 1.93 hours
= √(0- 1.93)² + (0-1.93)² +(0- 1.93)²+( 0- 1.93)²+ (1- 1.93)² + (1- 1.93)² +(1 - 1.93)² +(2 - 1.93)² + (2 - 1.93)² + (2 - 1.93)² + (2 - 1.93)² + ( 2 - 1.93)² +(4 - 1.93)² +(4 - 1.93)² + (5 - 1.93)²/15 - 1
= √(3.737777776 + 3.737777776 + 3.737777776 + 0.871111111 +0.871111111 + 0.871111111 + 0.004444444445+ 0.004444444445 + 0.004444444445 + 0.004444444445 + 0.004444444445 + 1.137777778 + 4.271111112 + 4.271111112 + 9.404444446)/15 - 1
= √2.352380952
= 1.533747356
Step 2
We find the standard error
The formula = Standard Deviation/√n
Standard deviation = 1.533747356
n = 15
= 1.533747356/√15
= 1.533747356 /3.87298334621
= 0.39601186447
Approximately = 0.4
Therefore, the standard error is 0.4
4x+13x=119 what does x=?
x=7
Answer:
x = 7
Step-by-step explanation:
Given
4x + 13x = 119 ( collect like terms on left side )
17x = 119 ( divide both sides by 17 )
x = 7
Answer:
x=7
Step-by-step explanation:
Let's solve your equation step-by-step.
4x+13x=119
Step 1: Simplify both sides of the equation.
4x+13x=119
(4x+13x)=119(Combine Like Terms)
17x=119
17x=119
Step 2: Divide both sides by 17.
17x
17
=
119
17
x=7
Answer:
x=7
Isaiah is a college student who rents an apartment that costs $755 a month. Each month, Isaiah receives $250 from his parents and $225 from a scholarship to help pay for the rent. Isaiah works at Ringling Telemarketing Company, making $10 an hour. Which of the following inequalities can be used to determine the number of hours, x, that Isaiah must work to pay his rent each month?
1.)10x-475≤755
2.)475x+10≥755
3.)10x+475≥755
4.)10x+475≤755
Answer: 3
10x+475≥755
Answer:
the 3rd one
Step-by-step
i think its right, i hope :)
Can anyone tell me how to break apart the following number: 6359
Answer:
6000 + 300+ 50 +9
Step-by-step explanation:
Start by focusing on the thousands place. Then switch to hundreds then to tens and finally to ones place.
Determine whether AB and CÓ are parallel, perpendicular or neither.
A=(-2,-1) B=(4, 1)
C=(-2,3)
D= (0, - 2)
Answer:
Neither
Step-by-step explanation:
They do not form a 90° angle(so it's not perpendicular)
And they touch(so it's not a parallel)
What is the distance between points A and E?
A. 2.8
B. 3.2
C. 4.9
D. 5.7
Answer:
D. 5.7
Step-by-step explanation:
due to its reflection
Answer:
D
Step-by-step explanation:
A(3, 4) ; B(-1 , 0)
Distance= [tex]\sqrt{(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}}[/tex]
= [tex]\sqrt{(-1-3)^{2}+(4-0)^{2}}\\\\=\sqrt{(-4)^{2}+(4)^{2}}\\\\=\sqrt{16+16}\\\\=\sqrt{32}\\\\=\sqrt{2*2*2*2*2}\\\\=2*2\sqrt{2}=4\sqrt{2}[/tex]
= 4 * 1.4142
= 5.6568
= 5.7
The average age of 3girls is 17years 4months.The average 2 of them is 17years 3months. How old is the third girl?
Answer:
17 years 2months
Step-by-step explanation:
Beacause the last girl is young
What is the slope of a line that is perpendicular to the line y=-1/3x-6
OA. 3
OB. 1/3
OC. -1/3
O D. 3
Answer:
3
Step-by-step explanation:
3 is the complete oposite of -1/3 in terms of slopes, therefore they are perpendicular to each other.
If 6 pounds of blueberries costs $16.50, is $1 for 2.75 pounds of blueberries true?
Step-by-step explanation:
Hmm I'm not sure but (no) I think
6 pounds = $16.50
1 pound = $16.50 ÷ 6
=$2.75
$16.50 = 6 pounds
$1 = 6 ÷ $16.50 = 4/11 pounds (0.36363636......)
HHHHHEEEELPPPPP NOW Steve is buying apples for the fifth grade. Each bag holds 13 apples. If there are 77 students total, how many bags of apples will Steve need to buy if he wants to give one apple to each student?
Steve will need to buy
_____ bags.
Answer:
6
Step-by-step explanation:
eactly it 5.923076923076923