Answer:
im thinking the answer is 3/4 x 20
Answer:
3.20
Step-by-step explanation:
i used math
Write the fractions from parts (a) and (b) as a proportion, and solve to find out how many miles Alex's friend's house is from school. Round your answer to the tenths place. *
Question:
Alex skateboards at a constant speed from his house to school 3.8 miles away. It takes him 18 minutes.
a. What fraction represents his constant speed, c?
b. After school, Alex skateboards at the same constant speed to his friend’s house. It takes him 10 minutes. Write the fraction that represents constant speed, c, if he travels a distance of y.
c. Write the fractions from parts(a) and (b) as a proportion, and solve to find out how many miles Alex’s friend’s house is from school. Round your answer to the tenths place.
Answer:
(a) [tex]c = \frac{3.8}{18}[/tex]
(b) [tex]c = \frac{y}{10}[/tex]
(c) 2.1 miles
Step-by-step explanation:
Solving (a):
Given
[tex]Distance = 3.8\ miles[/tex]
[tex]Time = 18\ minutes[/tex]
Required
Determine the constant speed, c.
Speed is calculated as:
[tex]Speed = \frac{Distance}{Time}[/tex]
So, we have:
[tex]c = \frac{3.8}{18}[/tex]
Solving (b):
Given
[tex]Distance = y[/tex]
[tex]Time = 10\ minutes[/tex]
Required
Determine the constant speed, c.
Speed is calculated as:
[tex]Speed = \frac{Distance}{Time}[/tex]
So, we have:
[tex]c = \frac{y}{10}[/tex]
Solving (c): Write (a) and (b) as proportions and solve for y.
As a proportion, we have
[tex]\frac{y}{10} = \frac{3.8}{18}[/tex]
Multiply both sides by 10
[tex]10 * \frac{y}{10} = 10 * \frac{3.8}{18}[/tex]
[tex]y = 10 * \frac{3.8}{18}[/tex]
[tex]y = \frac{38}{18}[/tex]
[tex]y = 2.11111[/tex]
[tex]y = 2.1\ miles[/tex] ---- approximated
is the expression 3 (x + 1 1/2) - 3 equivalent to 3x + 1 1/2?
Answer:
Yes
Step-by-step explanation:
If you multiply the 3 into the equation it will give you 3x+3 3/2 -3 and if you simplify it the answer is 3x+4 1/2 -3=3x +1 1/2.
3x+1 1/2 = 3x + 1 1/2
can somebody help me ?
Answer:
I believe the answer is A and D.
7th grade help me please:)
Answer:
4^9
262144
Step-by-step explanation:
how much is 45T in ounces
Answer:
Assuming T = ton:
1440000 ounces
Step-by-step explanation:
1 ton = 2000 pounds
1 pound = 16 ounces.
So 45 tons = 2000 * 16 * 45 ounces.
Sketch a graph of the polynomial function f(x) =x3− 2x2. Use it to complete the following:
f is------ on the intervals (−∞, 0) and (0, 2).
f is------ on the interval (2,∞).f is on the interval (0, 4__3).
f is------ on the intervals (−∞, 0) and(4__3, ∞).
Answer:
We have the function:
f(x) = x^3 - 2*x^2
To sketch this, we need to graph some points, and then just draw a line that passes through the points.
The graph of this equation is shown below.
Now we can complete the question.
If the graph is below the x-axis in some interval, the function is negative in that interval
If the graph is above the x-axis in some interval, the function is positive in that interval.
If the graph goes up in a interval, then the function is increasing in that interval
If the graph goes down on an interval, then the function is decreasing in that interval.
Then:
1) f is------ on the intervals (−∞, 0) and (0, 2).
Here we can see that the graph is below the x-axis in those intervals, then here we have:
f is negative on the intervals (−∞, 0) and (0, 2).
2) f is------ on the interval (2,∞)
Here the answer is positive:
f is positive on the interval (2,∞)
3) fi is ------ on the interval (0, 4/3)
In the graph, you can see that the graph goes down in that interval, then the correct answer here is:
f is decreasing on the interval (0, 4/3)
4) f is------ on the intervals (−∞, 0) and (4/3, ∞).
In this case, we can see that the graph goes up in these intervals, then the correct answer here is:
f is increasing on the intervals (−∞, 0) and (4/3, ∞).
Ok I need help solving this...
A. 105
B. 120
C. 50
D. 125
Answer:
A - 105
Step-by-step explanation:
since the two measurements are supplements, you do x+82+x+112=180. then you get x=-7. then you do 112-7=105
Answer:
105°
Step-by-step explanation:
A line equals 180, so take the two expressions and set them equal to 180:
x+82+x+112=180
simplify:
2x+194=180
2x=-14
x=-7
now plug the x value into the bolded expression
x+112
-7+112 = 105°
what is 1 3/4 divided by 4
Answer:
The correct answer is,
[tex] \frac{7}{16} [/tex]
hope it helps.
have a great day.
Answer:
1 3/4 ÷ 4 = 7/16.
Step-by-step explanation:
Is your answer.
If A is 13 cm B is 12 cm and c is 5cm then what is the area if that triangle
6.2.24
Que
In the figure, PQ = QR = RS. Find TU.
w
s
U
2.3
Y
12 R
VO
2.8 x
P Р
The length of TU is
Answer:
TU = 8.4
Step-by-step explanation:
The geometric figure consists of the following segments;
1) 4 parallel lines, WS, YR, XQ, and, VP
2) Three transversals, VW, PS, and, TU
The given parameters are;
PQ = QR = RS
Therefore, given that the transversal, PS, makes equal intercept with the 4 given parallel lines, by equal intercept theorem, the transversal TU will make equal intercepts with the given parallel lines
Therefore;
TX = 2.8 = XZ = ZU
From which we have, by segment addition postulate;
TU = TX + XZ + ZU
∴ TU = 2.8 + 2.8 + 2.8 = 8.4
TU = 8.4.
What is the first step in simplifying the expression
-5x2(4x3 - x2)2 ?
O Distribute -5x?
Square 4x - x2
Subtract 4x3 - 2
Answer:
Square 4x³ - x²
Step-by-step explanation:
Given the expression -5x²(4x³ - x²)²
The first step in simplifying the expression is to open the parenthesis by taking the square of 4x³ - x² as shown;
-5x²(4x³ - x²)²
= -5x²[(4x³)²- 2x²(4x³) + (x²)²]
= -5x²[16x^6- 8x^5 + x^4]
Hence the correct answer is Square 4x³ - x²
Find the difference.
5 1/8 - 2 3/4
Answer:2 3/ 8
Step-by-step explanation: 5 1/8 - 2 3/4
= 41/ 8 - 11/4
= 41/8 - 22/8
=19/8
=2 3/ 8
Change to improper fraction .Then make the denominator the same ,make both denominator to 8 . Now you have 41/8 and 22/8 ,you can subtract it and it gives you 19/8.Lastly you make the improper fraction to mixed numbers which is 2 3/ 8 .
In ΔWXY,
m
∠
W
=
(
2
x
−
12
)
∘
m∠W=(2x−12)
∘
,
m
∠
X
=
(
2
x
+
17
)
∘
m∠X=(2x+17)
∘
, and
m
∠
Y
=
(
9
x
−
7
)
∘
m∠Y=(9x−7)
∘
. Find
m
∠
X
.
m∠X.
WHAT IS THAT ? THX
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
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.
.
Help me if you are smart in math!
Answer:
10th number in the sequence is 786432
n = 4
Step-by-step explanation:
Multiply the following number by 4 (starting at #4) until you reach the 10th number in the sequence
Find the unit rate for 72 oz. for 12 servings.
72 servings
12 servings
6 oz. per serving
12 oz. per serving
Answer:
6 onuces per serving
Step-by-step explanation:
The grocery store sells 2 pounds of potatoes for $1.50. At this price, how much do 5 pounds of potatoes cost? What is the unit rate?
Answer:
5 pounds of potatoes is $3.75 1 pound is .75 cents
Step-by-step explanation:
A bottle of 150 vitamins costs $5.25. If the cost varies directly with the number of vitamins in the bottle, what should a bottle of 250 vitamins cost?
Answer:
$8.75
Step-by-step explanation:
Set up a proportion where x is the cost of a bottle with 250 vitamins:
[tex]\frac{150}{5.25}[/tex] = [tex]\frac{250}{x}[/tex]
Cross multiply and solve for x
150x = 1312.5
x = 8.75
So, it will cost $8.75 for a bottle with 250 vitamins
A linear model for the data in the table is shown in the scatter plot.
X Y
1 2
2 6
5 6
6 9
7 11
9 10
10 13
(A) which two points should you use to find the equation for the model?
(B) what is the slope of the linear model? Show your work.
(C) what is the equation of the linear model in point slope form?
(D) what is the slope-intercept form of the equation you wrote in part (c). Show your work.
(E) what is the equation for the least squares regression line? Round the values for a and b to three decimal places)
Please be detailed! I really need help!
a) The two points that should be used to find the equation are given as follows: (6,9) and (10,13).
b) The slope of the linear model is of 1.
c) The point-slope form of the linear model is given as follows: y - 9 = (x - 6).
d) The slope-intercept form of the equation you wrote in part (c) is given as follows: y = x + 3.
e) The least squares regression line is given as follows: y = 1.028x + 2.271.
What is the slope-intercept definition of a linear function?The slope-intercept definition of a linear function is given as follows:
y = mx + b.
In which:
m is the slope.b is the y-intercept.Two points from the line are defined as follows:
(6,9) and (10,13).
These points were chosen as they have the least residual, that is, these points are the closest to the line of best fit.
Given two points, the slope is calculated as the change in y divided by the change in x, hence:
m = (13 - 9)/(10 - 6) = 1.
Considering point (6,9), the point-slope equation is given as follows:
y - 9 = (x - 6).
Hence the slope-intercept definition of the linear function is given as follows:
y - 9 = x - 6
y = x + 3.
The points from the scatter plot are given as follows:
(1,2), (2,6), (5,6), (6,9), (7,11), (9,10), (10,13).
Inserting these points into a linear regression calculator, the regression line is given as follows:
y = 1.028x + 2.271.
More can be learned about linear functions at https://brainly.com/question/24808124
#SPJ1
Victory Theater offers matinee tickets that are 35% cheaper than the tickets for the
evening shows. If an evening ticket costs $8.00, how much does a matinee ticket
cost?
A. $2.80
B. $5.20
C. $7.65
D. $10.80

Answer:
B
Step-by-step explanation:
35% off of $8.00 is equal to $5.20
✧brainliest appreciated✧
Pls help me meememememmmememe
Step-by-step explanation:
A= 4(pi)r^2
A=4(3.14159265359)13^2
A=2123.72
**I dont know if it's right or wrong.**
How do you solve this trigonometry problem? Thank you
Answer:
3348 ft
Step-by-step explanation:
sin 21° = BC/AB = 1200/AB
AB = 1200 / sin 21° = 1200 / 0.358 = 3352 ≈ 3348
Please Help Me!!!!!!!
Answer:
D
Step-by-step explanation:
(6, 24) this ordered pair has an x-value of 6 and a y-value of 24
The only equation, if you substitute those values into it, which works is D.
24 = 4(6)
24 = 24
2x + 6 = 6x - 22
Infinite Solutions
O No Solution
One Solution
O No answer text provided.
Answer:
it would be only one solution
Step-by-step explanation:
Write the expression in standard form. -2(8m + 3)
Answer:
-16m-6
Step-by-step explanation:
use distributive property, you get -16m-6
I hope this helped, and if my answer was right, please mark this as brainliest! Thank you!
Hey there!
Hey there!
–2(8m + 3)
Distribute
–2(8m) + –2(3)
–2(8m) = –16m
–2(3) = —6
Answer: –16m – 6 ☑️
Good luck on your assignment and enjoy your day!
~LoveYourselfFirst:)
What’s the distance between the points! round to the nearest tenth i need to show work please help i’m failing!
Answer:
[tex]\sqrt{109}[/tex]
Step-by-step explanation:
using pythagorean theorem
height:3
length=10
a^2+b^2=c^2
a=height=3
b=length=10
9+100=c^2
c=[tex]\sqrt{109}[/tex]
I NEED HELP
what is the equation of the line in slope intercept form that passes through (-2,5) and (-1,1)
Answer:
y=4/3x+7/3
Step-by-step explanation:
I don't know if this is right.
Express each of the following fractions as a mixed number (the sum of a whole number and the remaining fractional units).
8 over 5=
13 over 12= pleas awnser this im 10 and this is giveing me a hard time to figer out
8/5 = 1 3/5
(5 x 1 = 5 + 3 = 8, to get 8/5)
13/12 = 1 1/12 (12 x 1 = 12 + 1 = 13, to get 13/12)
Hope this helped! :D
Find - 5+(-3) + 5.
0) Which pair of addends has a sum of O?
-3 and 5
-5 and 5
-5 and -3
Answer: -5 and 5
Step-by-step explanation:
-5 plus 5 added has a sum of 0
a rectangle has a width that is 1/2 its length the perimeter of this rectangle is 42 inches what is the width of the rectangle...what is the width of the rectangle
Answer:
w = 7 inches
Step-by-step explanation:
length = n
width = n/2
Perimeter = 2n + 2(n/2)
42 = 2n + n
42 = 3n
n = 14
width = 14/2 = 7
can i get help on question 2 please
Answer:
last option is the answer
Step-by-step explanation:
the answer cannot be the two middle options because you can see the y-intercept is 2 so the equation must end with that
now you have to determine if the slope of the line is -5 or -1
you can find the slope by selecting two points on the line; for example, (0,2) and (1,1) and using formula: difference of y-values 2 - 1
difference of x-values 0 - 1
the slope is -1