Answer:
17.49
Step-by-step explanation:
A=πr2
d=2r
d=2A
π=2·240.26
π≈17.49013
Can someone help me please?
9515 1404 393
Answer:
10 inches
Step-by-step explanation:
Use the formula for the area of a trapezoid. Fill in the given information and solve for the unknown.
A = 1/2(b1 +b2)h
50 in² = (1/2)(3 in +7 in)h
50 in²/(5 in) = h . . . . . . . . . . divide by the coefficient of h
10 in = h
The height of the trapezoid is 10 inches.
Solve the following system of equations using an inverse matrix. You must also indicate the inverse matrix, A^{-1},A
−1, that was used to solve the system. You may optionally write the inverse matrix with a scalar coefficient.
−3x−2y=−8
−6x−5y=−7
A1=[ ? ] x= ? y=?
Answer:
x-intercept(s):
(
−
8
3
,
0
)
y-intercept(s):
(
0
,
−
4
)
Step-by-step explanation:
The x-intercepts are (83, 0), and the y-intercepts are (0, 4). Matrixes, like numbers, have reciprocals. In the world of matrices, this reciprocal is known as a "inverse matrix."
What is the inverse matrix?The concept of a matrix's inverse is a multidimensional generalization of the concept of a number's reciprocal: just as the product of a number and its inverse equals one, the product of an identity matrix and a square matrix equals one.
A A-1 = A-1 A = I because the identity matrix I is the inverse of a matrix. An invertible matrix is one that has a non-zero determinant and can have its inverse determined. Finding the inverse of a 2x3 matrix is impossible because it is not a square matrix.
Response: (8 3, 0) are the x-intercepts.
(0, 4 ) are the y-intercepts.
Therefore,
-3 x-2 y=-8
Add 2 y to both sides
-3 x-2 y+2 y = -8+2 y
Simplify
[tex]$$-3 x=-8+2 y$$[/tex]
Divide both sides by -3
[tex]$$\frac{-3 x}{-3}=-\frac{8}{-3}+\frac{2 y}{-3}$$[/tex]
Simplify
[tex]$$x=-\frac{-8+2 y}{3}$$[/tex]
Response: (8 3, 0) are the x-intercepts.
(0, 4 ) are the y-intercepts.
To learn more about inverse matrix refer to:
brainly.com/question/27924478
#SPJ2
ia had 50 carrot sticks for her
study group to snack on. There were
6 people eating the carrot sticks, and
each person ate an equal number of
carrots until there weren’t enough
left to share equally. How many
carrot sticks were left over? Explain.
Answer:
8.333333333 or 25 /3
Step-by-step explanation:
Helllpppp pls answer both questions !!!! 30pts
A motorboat travels 102 miles in 3 hours going upstream. It travels 186 miles going downstream in the same amount of
time. What is the rate of the boat in still water and what is the rate of the current?
Rate of the boat in still water:
Rate of the current:
Answer:
Rate in still water = 48 mph.
Rate of current = 14 mph.
Step-by-step explanation:
Let the rate in still water be x and rate of the current be y miles per hour.
Upstream:
x - y = 102/3
Downstream:
x + y = 186/3
Adding the 2 equations
2x = 102/3 + 186/3 = 34 + 62
2x = 96
x = 48 mph.
So 48 - y = 34
y = 48 - 34 = 14 mph.
dele took 25 minutes to walk to school and he arrived at exactly 8:00am, at what time did he leave his home
f(x) = 2x3 – 3x2 + 5
g(x) = 3x3 + 2x2 – 4x – 9
Find (f - g)(x).
2x+y=3
x-y= 1
solve the equation
Answer:
x = 4/3
y = 1/3
Step-by-step explanation:
System of equations! This is set up really well to make the second equation equal x then substitute.
x - y = 1
x = 1 + y
and then our substitution:
2 (1+y) + y = 3
and solve:
2 + 2y + y = 3
3y + 2 = 3
3y = 1
y = 1/3
And now we can substitute that value into one of our equations:
x - (1/3) = 1
x = 4/3
Next we should check by substituting these values into both of our equations:
2 (4/3) + (1/3) = 3
9 / 3 does equal 3 !
(4/3) - (1/3) does equal 1 !
Therefore, x = 4/3 , and y = 1/3
The amount of time required to reach a customer service representative has a huge impact on customer satisfaction. Below is the Excel output from a study to see whether there is evidence of a difference in the mean amounts of time required to reach a customer service representative between two hotels. Assume that the population variances in the amount of time for the two hotels are not equal. What is the smallest level of significance at which the null hypothesis will still not be rejected
Answer:
The smallest level of significance at which the null hypothesis will still not be rejected is 0.05.
Step-by-step explanation:
The [tex]p-[/tex] value of t-test is [tex]0.725009[/tex]. This [tex]p-[/tex] value is greater than [tex]0.05[/tex].
Hence, the null hypothesis is not rejected and conclude that there is no sufficient evidence of a difference in the mean amount of time required to reach a customer service representation between two hotels.
The complete question is :
Find the volume of this triangular prism.
Be sure to include the correct unit in your answer.
Answer:
243 ft^3
Step-by-step explanation:
The volume of a triangular prism is the triangular base times the height.
To get the area of the triangle, multiply the base time height and divide by 2.
9*6/2=27
Now multiply by the height
27*9=243
Answer: 243 ft^3
Answer:
243ft^3
Step-by-step explanation:
Chapter 6 Introduction to Variables and Evaluating Expression
Mathematics, Algebra 1
Question 1
Simplify: -2s - 9+7 - 5r use s = 3 and r= -8
Someone help me out my math grads are bad
Answer:
15m^2
Step-by-step explanation:
2m*3m = 6m^2
3m*3m = 9m^2
Answer: 6m^2 + 9m^2 = 15m^2
Feel free to mark as brainliest :D
What is the surface area?
4 ft
4 ft
4 ft
The surface area of what shape exactly?
Answer:
Hello! answer: 96Step-by-step explanation:
I'm assumung this is a cube sense cubes will equal the same for all 6 sides we just have to find 1 side then just multiply by 6 to get the answer easy peasy!!! so 4 × 4 = 16 and 16 × 6 = 96 so 96 is our surface area Hope that helps!
find the length of the hypotenuse of a right triangle if a=6 and b=10
Answer:
Step-by-step explanation:
6^2 + 10^2 = c^2
36+100 = c^2
136 = c^2
square root both sides
c = square root 136
Can someone please help me I will mark u brilliant
Answer:
11
Step-by-step explanation:
just count all the Xs from 4 and up
Which sentence has the quotation marks placed correctly ?
1.) “Mother ," I cut my finger , said Jane.
2.) "Mother, I cut my finger," said Jane.
3.) Mother, I cut my finger, "said Jane."
4.) "Mother, I cut my finger, said Jane."
A child pool is 3.8 feet wide 5.5 feet long and 1.2 fee deep, what is the volume of the pool?
Answer:
25.08
Step-by-step explanation:
Answer:
25.08 cubic feet
Step-by-step explanation:
v = l * w * h
v = 5.5 * 3.8 * 1.2
v = 25.08 cubic feet
What is the perimeter of this shape? Use numbers only. *
Answer:
13 m.
Step-by-step explanation:
Formula for perimeter of a rectangle: side + side + side + side.
In other words, add every side of the rectangle.
[tex]2.5+4+2.5+4=13.[/tex]
Therefore, 13 meters is the perimeter of this shape.
Answer:
13m
Step-by-step explanation:
Perimeter of a Rectangle: 2(L + W) where L is the Length, and W is the Width of the rectangle.
=> 2(4 + 2.5)
=> 2(6.5)
=> 13
Perimeter of the Figure = 13 m
Hope this helps!
find the volume of the pyramid 6ft 6ft 4ft
Answer:
48 ft³
Step-by-step explanation:
[tex]V=\frac{lwh}{3}[/tex]
6 · 6 · 4
144 ÷ 3
48
Answer:
48ft cubed
Step-by-step explanation:
Multiply the numbers then use cubed because your working with volume.
if A(2;2) and B(-3;4), determine the equation of AB, in the form y=mx+c
Answer:
[tex]y = -\frac{2}{5}x + \frac{14}{5}[/tex]
Step-by-step explanation:
Equation of a line:
The equation of a line has the following format:
[tex]y = mx + c[/tex]
In which m is the slope and c is the y-intercept(value of y when x = 0).
A(2;2) and B(-3;4)
When we have two points, the slope is the change in y divided by the change in x. So
Change in y: 4 - 2 = 2
Change in x: -3 - 2 = -5
Slope: [tex]m = \frac{2}{-5} = -\frac{2}{5}[/tex]
So
[tex]y = -\frac{2}{5}x + c[/tex]
A(2;2)
When [tex]x = 2, y = 2[/tex]. We use this to find c.
[tex]y = -\frac{2}{5}x + c[/tex]
[tex]2 = -\frac{2}{5}(2) + c[/tex]
[tex]c = 2 + \frac{4}{5} = \frac{10}{5} + \frac{4}{5} = \frac{14}{5}[/tex]
So
[tex]y = -\frac{2}{5}x + \frac{14}{5}[/tex]
Please no troll include work
2.- Un campesino guarda un doceavo de su trigo cosechado para semilla, un sexto de la misma
cosecha lo convierte en harina y vende 288 kilos. ¿Cuántos kilogramos de trigo cosechó?
.Please help with question 21
Answer:
y=500x+20000
Step-by-step explanation:
large pies cost $5 and small pots cost $2. If $45 pies were sold for $120 how many small pies were sold
Answer:
I'm assuming that's supposed to just be 45, not $45
Step-by-step explanation:
35 small pies were sold
10 large pies = $50
35 small pies = $70
50 + 70 = 120
83. A student estimated the height of a tree as 47
feet. If the actual height is 53 feet, what is the
percent error rounded to the nearest percent?
(Hint: Compare the estimated height to the actual
height.)
Poviow (SARZA
Page 8
Is the expression 3x+2 a binomial?
Yes, this is a polynomial, but a special form of a polynomial with just one term which is called a monomial .
What are the zeros of the function f(x) = (x + 5)(2x-3)?
O A. x=-5 and x = 8
O B. x = -5 and x = 4
O C. x = 5 and x = -8
O D. x = 5 and x = -4
Sally has 3 yards of yarn. She will use 6 inches per bracelet. How many bracelets can she make?
3 feet in a yard... 12x3 = 36...... 36+36+36 =108 inches
108 divided by 6 is 18 bracelets
does anyone know what happened to the tutors??
Answer:
Hey! I'm honestly not sure.
Step-by-step explanation:
I dont have the app... but on the website I'm pretty sure they dont have any.
Have a nice day <3
the hypotenuse of a 30-60-90 degree right triangle has a measure of 10. what is the measure of the shortest side
Answer:
5
Step-by-step explanation:
A 30-60-90 triangle's sides equal as follows:
Hypotanuse= x (a number)
Long side= x/2( also can be calculated as x* 1/2) * [tex]\sqrt{3}[/tex]
Short side = x/2 or x * 1/2