The average rate, in miles per hour, of the rail portion of the trip is; D: 75
How to calculate the average speed?Since exactly 1/3 of the distance travelled was by rail, then we can say that;
(1/3) * (90) = 30 miles
We are told that part of the trip took 1/5 of the travel time. Thus;
Time it takes to travel that distance is:
(1/5) * (2) = 2/5 of an hour
Average rate is;
30/(2/5) = 150/2 = 75 mph
Read more about Average speed at; https://brainly.com/question/4931057
#SPJ1
What the 29th square number?
Answer: 841
Step-by-step explanation:
29×29=841
What is this expression in simplified form?
Answer:
See below
Step-by-step explanation:
= (-7)(11)(√(3*10) ) = - 77 √(30)
What is the range of the function y=3√x+8?
-∞xy<∞
-8
0≤y<∞
2≤y<∞
The range of the function the as given in the equation is; -∞ ≤ y < ∞.
What is the range of the function?It follows from the task content that the function given is; y=3√x+8.
On this note, it follows that the range of the function is the set of all possible outputs, y values and in this case is; -∞ ≤ y < ∞.
It therefore follows that the range of the function is as indicated above as all X-values (domain) must be positive and the square root of x yields a positive or negative real number.
Read more on range;
https://brainly.com/question/1579288
#SPJ1
Compare the graph of m(x) = 0.7x² + 4 with the graph of n(x) = x².
The graph of m(x) is narrower.
Both graphs open upward.
Both have the axis of symmetry x = 1.
The vertex of m(x) is (0, 4); the vertex of n(x) is (0, 0).
The graph of m(x) is wider.
Both graphs open upward.
Both have the axis of symmetry x = 0.
The vertex of m(x) is (0, 4); the vertex of n(x) is (0, 0).
The graph of m(x) is wider.
Both graphs open downward.
Both have the axis of symmetry x = 0.
The vertex of m(x) is (0, 4); the vertex of n(x) is (0, 0).
The graph of m(x) is narrower.
Both graphs open upward.
Both have the axis of symmetry x = 1.
The vertex of m(x) is (0, 4), the vertex of n(x) is (0, 2).
Answer:
B.) The graph of m(x) is wider.
Both graphs open upward.
Both have the axis of symmetry x = 0.
The vertex of m(x) is (0, 4); the vertex of n(x) is (0, 0).
Step-by-step explanation:
When the coefficient before x² is greater than 1, the curve of the graph is narrower. When the coefficient is less than 1, the curve of the graph is wider.
When the coefficient in front of x² is positive, the graph opens upwards. When the coefficient is negative, the graph opens downwards.
The axis of symmetry is the "x" value which divides the curve into two equal sections. Their axis of symmetry are both x = 0 because their vertexes (the lowest point of the curve) are both at x = 0.
The vertex can be found by plugging x = 0 into both of the equations and then solving. The resulting value is the "y" position of the vertex.
m(0) = 0.7(0)² + 4 n(0) = (0)²
m(0) = 0 + 4 n(0) = 0
m(0) = 4
Therefore, the vertexes are m(x) = (0,4) and n(x) = (0,0).
Answer:
Step-by-step explanation:
m(x) =.7x^2 + 4
n(x) = x^2
In the graph below
green = m(x)
blue = n(x)
Answer:
Just look at the graph belowBoth graphs open upward.The vertex of m(x) is (0, 4); the vertex of n(x) is (0, 0).The graph of m(x) is wider.1/2 divided 8 as a whole number
Answer:
16
Step-by-step explanation:
A fraction that is divided by a number is just multiplication with the denominator. So with that 8(2)=16
PLEASE ANSWER
Consider the data set displayed on the following box plot.
Which of the following statements about the data set are true? Select all that apply.
A.The interquartile range is 10.
B.There is one outlier.
C.There are no outliers.
D.The data is skewed.
E.The interquartile range is 8.
F.There are two outliers
G.The data is symmetric.
The true statements are:
The interquartile range is 10.
The data is skewed.
What are the true statements?A box plot is used to study the distribution and level of a set of scores
The end of the first whisker represents the minimum number and the end of the second whisker represents the maximum number.
On the box, the first line to the left represents the lower (first) quartile. The next line on the box represents the median. The third line on the box represents the upper (third) quartile. The interquartile range is the difference between the first and third quartile.
Interquartile range = 9 - (-1) = 10
A box plot is negative skewed because the median is not at the center of the box.
An outlier would be within: (Q1 - 1.5 * IQR or Q3 + 1.5 * IQR).
- 1 - (1.5 x 10 ) = -16
9 + (1.5 x 10) = 24
To learn more about box plots, please check: https://brainly.com/question/27215146
#SPJ1
Which term describes the set of all possible input values for a function? O A. Range OB. Input O C. Output OD. Domain SUBMI
Answer:
D. domain
Step-by-step explanation:
domain is set of x-values
range is set of y-values
Input is the set of x-values, so it is the domain.
Pls help! 20 points very ugrent
Answer: -2, 1, all real numbers, all real numbers
Step-by-step explanation:
g o f(n) is basically g(f(n))
Using the question as an example we can get that f(0) = 1 so
g(f(0)) = g(1) = -2
f(1) = 0 so g(f(1)) = g(0) = 1
The domain of f(x) is all real numbers and the range of g(x) is all real numbers
Pls Help! Geometry
How much will the molding cost?
Answer: $412.50
Step-by-step explanation:
The area of the square formed by combining the painting and the molding is [tex](25)(28)=700[/tex] square inches.
The area of the painting itself is [tex](22)(25)=550[/tex] square inches.
Therefore, the area of the molding is [tex]700-550=150[/tex] square inches, and thus costs [tex](150)(2.75)=\$412.50[/tex]
The ratio of the weight of an object on Planet A to the weight of the same object on Planet B is 100 to 3. If an elephant weighs 3200 pounds on Planet A, find the
elephant's weight on Planet B.
The elephant's weight on Planet B is….. lb.
A ratio shows us the number of times a number contains another number. The elephant's weight on Planet B is 96 pounds.
What is a Ratio?A ratio shows us the number of times a number contains another number.
The ratio of the weight of an object on Planet A to the weight of the same object on Planet B is 100 to 3.
Weight on Planet A/ Weight on planet B = 100 / 3
Now, the weight of the elephant on planet A to Planet B will be,
elephant's weight on Planet A/elephant's weight on Planet B = 100 / 3
elephant's weight on Planet B = (3 ×3200)/100
elephant's weight on Planet B = 96 pounds
Hence, the elephant's weight on Planet B is 96 pounds.
Learn more about Ratios:
https://brainly.com/question/1504221
#SPJ1
Peter received a $15 tip on a meal that cost $130. What percent of the meal cost was the tip?
11.5%
21%
18.5%
14%
Drag each graph to the correct location on the table. The points on the graphs represent relations. Classify these relations according to whether or not they are functio 1-3 -2 -1 3. -40 2 1 -2 -3 1 2 Function -3 -2 -1 -1 -2 3 D 2 3 -3 2 101 -1 3 1240 1 24 2 10 3 Not a Function Drag each graph to the correct location on the table . The points on the graphs represent relations . Classify these relations according to whether or not they are functio 1-3 -2 -1 3. -40 2 1 -2 -3 1 2 Function -3 -2 -1 -1 -2 3 D 2 3 -3 2 101 -1 3 1240 1 24 2 10 3 Not a Function
Answer:
Function: BNot a function: A, CStep-by-step explanation:
A relation is a function if there is only one y-value for each x-value. If you can draw a vertical line on the graph that intersect more than one point, the relation is not a function. (This is the "vertical line test.")
ApplicationGraph A: there are 3 y-values associated with x=2. Not a function.
Graph B: passes the vertical line test: A function.
Graph C: there are 2 y-values at each of x=1 and x=2. Not a function.
Which of the following could be the ratio between the lengths of the two legs of a 30-60-90 triangle?
Check all that apply.
Answer:c
options A and B
Step-by-step explanation:
the ratio between the lengths of the two legs of a 30-60-90 triangle
General ration of 30-6- 90 degrees triangle is
x : xsqrt(3) : 2x
When x=1 the ratio becomes 1 : 1 sqrt(3)
when x= 2sqrt(3) the ratio becomes
It becomes
Two sides of 30-60-90 triangle cannot be equal
so option c and option D are not possible
sqrt(2) is also not possible because we have sqrt(3) in general ratio
PLS MARK ME AS BRAINLIEST.
Helppppppo points to give
a) The point (2, -7/5) is not a point on the graph?
b) The value of f(x) when x is 1 is -1/3 and the point on the graph is (1, -1/3)
c) The value of x for f(x) = 2 is 22 and the point on the graph is (22, 2)
d) The domain of x is all real values of x ≠ 10
e) The x intercept is -2
f) The y intercept is -1/5
What is a Function?Function is a relation from a set of inputs to a set of possible outputs where each input is related to exactly one output and not one input for two outputs.
Analysis:
a) To test if the point (2, -7/5) is a point on the graph, we put in x = 2 into the function,
f(2) = 2+2/2-10 = 4/-8 = -1/2 ≠ -7/5. Therefore (2, -7/5) is not a point on the graph.
b) if x = 1, f(1) = 1 +2 / 1-10 = 3/-9 = - 1/3
The point on the graph is (1, -1/3)
c) if f(x) = 2, then 2 = x+2/x-10
2(x-10) = x+2
2x -20 = x+2
2x-x = 2+20
x = 22, the point on the graph is (22, 2)
d) The domain of the function is such that the denominator would not be zero.
so if x - 10 ≠ 0
Then the values of x ≠ 10 are the domain of the function.
e) The x intercept of the graph is the point at which f(x) = 0
0 = x+2/x-10
x+2 = 0
x = -2. The x-intercept is -2.
f) the y-intercept is such that x = 0
0+2/0-10 = 2/-10 = -1/5
Learn more about Function: brainly.com/question/25638609
#SPJ1
7. Write a general formula to describe the variation: x varies directly with the cube of y; x = 8 when y = -8.
Answer: it should be this M=kb^3/B^2
Step-by-step explanation:
Given the right triangle shown, solve for X, Y and Z. The triangle may not be drawn to scale
Answer:
X ≈ 8.58 ftY ≈ 9.46 ftZ = 65°Step-by-step explanation:
The mnemonic SOH CAH TOA is intended to help you remember the relationships between sides of a right triangle and trig functions of the acute angles. It tells you ...
Sin = Opposite/HypotenuseCos = Adjacent/HypotenuseTan = Opposite/AdjacentSidesThe given triangle shows values of an acute angle and its opposite side. You are to find the other two sides in the triangle, as well as the other acute angle.
X is the side adjacent to the given angle, so the relevant trig relation is ...
Tan = Opposite/Adjacent
tan(25°) = (4 ft)/X
Solving for X gives ...
X = (4 ft)/tan(25°) . . . . . . . . multiply by X/tan(25°)
X ≈ 8.58 ft
Y is the hypotenuse, so the relevant trig relation is ...
Sin = Opposite/Hypotenuse
sin(25°) = (4 ft)/Y
Y = (4 ft)/sin(25°) . . . . . . multiply by Y/sin(25°)
Y ≈ 9.46 ft
AngleThe sum of angles in a triangle is 180°, so if one of them is 90°, the sum of the other two is 90°.
Z = 90° -25°
Z = 65°
how much is 0.54/0.2
Answer:
2.7 is the answer!!
Step-by-step explanation:
hope this helps :)
Tyler spent 17,700 seconds completing a 1,000 piece puzzle.
How many hours is this equivalent to? Answer choices are rounded
to the nearest hour.
O 288 hours
O 20 hours
5 hours
O124 hours
PLS HELP ME 17 MIN LEFT Solve the following equation: one third plus one third equals
one third,
two sixths,
two thirds,
or three thirds.
What is the value of log(x exponent 2 y exponent 3 divided by z) when given the following:
log(x) = 3
log(y) = 2
log(z) = -1
A. 12
B. 13
C. 16
D. 18
Urgently need answer
Answer:
B. 13
Explanation:
[tex]\sf\:Given\:expression: log(\dfrac{x^2 y^3}{z} )[/tex]
Logarithm rules:
[tex]\sf (i) \ \sf log(ab) = log(a) + log(b)\\ \\ (ii) \ log(a/b) = log(a) - log(b)\\\\ (iii) \ log(a^n) = n log(a)[/tex]
Breakdown of the expression:
[tex]\rightarrow \sf log\left(\dfrac{x^2y^3}{z}\right)[/tex]
[tex]\rightarrow \sf log\left(x^2\right) + log\left(y^3\right) - log(z)[/tex]
[tex]\rightarrow \sf 2\log\left(x\right)+3\log \left(y\right)-\log \left(z\right)[/tex]
insert given values
[tex]\rightarrow \sf 2(3)+3(2)-(-1)[/tex]
[tex]\rightarrow \sf 13[/tex]
Which of the following is the best buy?
a 6 oz box of rice for $0.90
a 12 oz box of rice for $1.93
a 16 oz bag of rice for $2.42
a 9 oz box of rice $1.25
The $1.25 one for 9 Oz box of rice would be the best buy.
How to find the Unit Price?To get the best buy among the given items and prices, we need to find the unit price. Thus, the formula is;
Unit price = Price/Quantity
A) Unit Price = 0.90/6 = 0.15
B) Unit Price = 1.93/12 = 0.15083
C) Unit price = 2.42/16
Unit Price = 0.15125
D) Unit Price = 1.25/9 = 0.138
The $1.25 one for 9 Oz box of rice would be the best buy.
Read more about Unit price at; https://brainly.com/question/2804909
#SPJ1
Please help!!! Suppose we have two functions...
Answer:
4
Step-by-step explanation:
To find f(-1)g(-1) which is f(-1)*g(-1), first, we must find what are values of f(-1) and g(-1) first which can be found by substituting x = -1 in both functions.
[tex]\displaystyle{f(-1)=(-1)^2+1}\\\\\displaystyle{f(-1)=1+1 = 2}[/tex]
Now we know that f(-1) is 2, next, we find g(-1).
[tex]\displaystyle{g(-1) = 3(-1)+5}\\\\\displaystyle{g(-1)=-3+5 = 2}[/tex]
Now we know that g(-1) is 2 too. Since the question wants to find f(-1)g(-1), therefore 2*2 = 4.
Hence, the answer is 4.
Answer:
D) 4
Step-by-step explanation:
Given functions:
f(x) = x² + 1
g(x) = 3x + 5
Here, we're asked to find the value of both functions when the value of x is -1. Then, we multiply the functions in order to find the value of f(-1)•g(-1).
Note: f(-1) • g(-1) is equivalent to (f • g)(-1).
Method 1: f(-1) • g(-1)
Find the value of each function when x = -1.
f(-1) = (-1)² + 1 ⇒ f(-1) = 1 + 1 ⇒ f(-1) = 2
g(-1) = 3(-1) + 5 ⇒ g(-1) = -3 + 5 ⇒ g(-1) = 2
Multiply the functions together.
f(-1) • g(-1) ⇒ 2 • 2 ⇒ 4
Method 2: (f • g)(-1)
First, multiply the functions.
⇒ (x² + 1) • (3x + 5) [ Simplify using the Distributive Property: (a + b) • (c + d) = ac + ad + bc + bd. ]
⇒ x²(3x) + x²(5) + 1(3x) + 1(5)
⇒ 3x³ + 5x² + 3x + 5
Now, substitute -1 as the value of x.
⇒ 3(-1)³ + 5(-1)² + 3(-1) + 5 [ Exponents first. }
⇒ 3(-1) + 5(1) -3 + 5 [ Multiply the numbers. ]
⇒ -3 + 5 - 3 + 5 [ Simplify. ]
⇒ 4
Therefore, the product of both functions when x = -1 is 4.
Learn more about multiplying functions here:
brainly.com/question/12122417
brainly.com/question/16287318
LMNP is rotated 180 degrees clockwise around the origin. What are the coordinates of L?
[tex]\huge\boxed{L^\prime(0, -1)}[/tex]
To rotate a point around the origin by 180 degrees, multiply both parts of the coordinate point by [tex]-1[/tex]. (This means you go from [tex](x, y)[/tex] to [tex](-x, -y)[/tex].)
[tex]L(0, 1)[/tex]
[tex]L^\prime(0*(-1), 1*(-1))\\\boxed{L^\prime(0, -1)}[/tex]
Which is the distance betweeen parallel lines with the equations y=-1/3x+3 and y=-1/3x-7
Answer:
the distance is 10
Step-by-step explanation:
since the slope is the same you know they're parallel, but just find the difference from the two y intercepts (the +3/-7) the difference is 10, so 10.
Write an equation of the line passing through the point (7,3) that is parallel to the line y=2x-4.
Answer:
y=2x-11
Step-by-step explanation:
arralel lines have same gradient
since gradient of the known line is 2( the coefficient of x), it therefore follows that the gradient of the second line we want to find is also 2
So we know the gradient of the second line is 2, and we have one known point (7,3). We can therefore apply the formula for finding gradient to come up with the line
[tex]2=\frac{y-3}{x-7} \\\\y-3=2(x-7)\\\\y-3=2x-14\\\\y=2x-14+3\\\\y=2x-11[/tex]
A bus covered a distance of 331.25 km in 25 L of diesel. Find the distance covered by the bus in 1 L of diesel . please do answer in copy
Answer:
13.25km
Step-by-step explanation:
25 Litres = 331.25km
1 Litre =
[tex] \frac{331.25}{25} \\ = 13.25km[/tex]
Answer:
13.25 km
Step-by-step explanation:
25 litres = 331.25 km
1 litre =
331.25
25
=13.25 km
Use the demoivres theorem
By de Moivre's theorem,
[tex]\left(\cos\left(\dfrac\pi6\right) + i \sin\left(\dfrac\pi6\right)\right)^{18} = \cos\left(\dfrac{18\pi}6\right) + i \sin\left(\dfrac{18\pi}6\right) \\\\ ~~~~~~~~ = \cos(3\pi) + i \sin(3\pi) = \boxed{-1}[/tex]
The value of the given complex number is -1
De'moivres theorem
Given the polar form of a complex number expressed as:
[tex](cos\theta + isin\theta)^n\\[/tex]
This can also be expressed according to the de moivre's theorem as;
[tex]=(cos\theta + isin\theta)^n\\\\=(cosn\theta+isinn\theta)[/tex]
Given the expression below;
[tex](cos\frac{\pi}{6} + isin\frac{\pi}{6} )^{18}\\(cos18\cdot\frac{\pi}{6} + isin18\cdot\frac{\pi}{6} )\\(cos3\pi + isin3\pi)\\=-1[/tex]
Hence the value of the given complex number is -1
Learn more on complex number here; https://brainly.com/question/10662770
#SPJ1
find domain and range
Domain: [-4, ∞)
Range: (-∞, 0]
*Domain are all x-values listed. Here you can see the graph going the right (positive) of -4 (Doesn't go to the left)
*Range are all y-values listed. Here you can see the graph starts from zero and goes down (negative)
Hope it helps!
One jar filled with honey weighs 120 grams and one empty jar with half filled honey jar weighs 150 grams what is the weight of the jar
Answer:
90 grams
Step-by-step explanation
Full = 120
half filled + empty = 150
half of 120 = 60
Therefore, a jar weighs 150 - 60
= 90 grams
you have 32 tbsp of peppercorns you need 2 teaspoons to make one serving of cajun seasoning how many servings can u make
Answer:
48 servings
Step-by-step explanation:
3tsp=tbsp
32*3=96
96/2=48