Answer:
10.8 cm
Step-by-step explanation:
we know that
The perimeter of the triangular face is equal to the sum of its sides
P=a+b+c
we have
a=28 mm=28/10=2.8 cm
b=4 cm
c=4 cm
substitute the values
P=2.8+4+4=10.8 cm
Answer:
10.8 cm
Step-by-step explanation:
The quantity q varies inversely with the square of m and directly with the product of rand x. When q is 2.5, m is 4 and the
product of r and x is 8. What is the constant of variation?
Answer:
The constant of variation is
[tex]k= 5[/tex]
Step-by-step explanation:
First we must write the relationship as an equality.
If q varies inversely with the square of m, this means that when m ^ 2 increases then q decreases.
If q varies directly with the product of r and x this means that when r * x increases q increases.
Then the relationship is:
[tex]q = k\frac{rx}{m^2}[/tex]
Where k is the constant of proportionality
Then if:
[tex]q=2.5\\\\m=4\\\\r*x=8[/tex]
[tex]2.5 = k\frac{8}{4^2}[/tex]
We solve for k
[tex]2.5 = k\frac{8}{16}[/tex]
[tex]2.5 = k\frac{1}{2}[/tex]
[tex]k= 5[/tex]
Answer:
5
Step-by-step explanation:
C on edge
The figure is made up of a cylinder and a spear which has been cut in half. The radius of each half sphere is 5 mm. What is the volume of the composite figure? Use 3.14. Round to the nearest hundredth
Answer:
The volume of the cylinder should be:
V = Bh = πr²h = 3.14 · 5² · 10 = 785 (mm³)
The volume of the sphere should be:
V = 4/3 · πr³ = 4/3 · 3.14 · 5² ≈ 523.33 (mm³)
=> The total volume of the composite figure is:
V = 785 + 523.33 = 1,308.33 (mm³)
Answer:
V = 785 + 523.33 = 1,308.33 (mm³)
Step-by-step explanation:
What is the value of the interquartile range of the data below?
6
12
14
24
Answer:
14
Step-by-step explanation:
The interquartile range is the value of quartile 3 minus quartile 1.
The "box" part of this diagram has 3 lines, the left most, the middle, and the rightmost.
The leftmost line is Quartile 1. The right most is Quartile 3.
Hence
interquartile range = quartile 3 - quartile 1
Looking at the box plot, we can see that each small line in the number line is 2 units.
The leftmost line (quartile 1 ) is at 1 unit left of 30, so that is 30 -2 = 28
The rightmost line (quartile 3) is at 1 unit right of 40, so that is 40 + 2 = 42
Hence,
Interquartile range = 42 - 28 = 14
Answer:
c: 14
Step-by-step explanation:
I see everyone saying it is B or D, but ITS C! The graph is counting by 2, so there fore it is 42-28= 14. :)
Which word best describes the degree of overlap between the two data sets?
none
low
moderate
high
The best word that describes the degree of overlap between the two data sets is: low.
What is Degree of Overlap?The degree of overlap between two sets of data can be described as the extent to which two data sets vary in terms of their centers.
In the diagram given, the two dot plots overlap between 30 and 35. The difference is minimal.
Therefore, the best word that describes the degree of overlap between the two data sets is: low.
Learn more about degree of overlap on:
https://brainly.com/question/12242330
Answer: The word that best describes the degree is B Low
Explanation: I took the test and it was right.
Hope ya'll have a good day :)
Identify the recursive formula for the following sequence:
1/2, 1 1/2, 3 1/2, 7 1/2...
Answer:
C
Step-by-step explanation:
The problem is where does n start?
a1 = 1/2
a2 = 2*(a1) + 1/2
a2 = 2*(1/2) + 1/2
a2 = 1 + 1/2
a2 = 1 1/2
=========
a3 = 2*a2 + 1/2
a3 = 2*(1 1/2) + 1/2
a3 = 3 + 1/2
a3 = 3 1/2
==============
a4 = 2(3 1/2) + 1/2
a4 = 7 + 1/2
a4 = 7 1/2
==============
an = 2*a_(n-1) + 1/2
The answer is C
Answer:
C on edge my loves
Step-by-step explanation:
Which is a solution to (x − 2)(x + 10) = 13?
x = 3
x = 8
x = 10
x = 11
Answer: There are two answers to this x=3 and x=11
Step-by-step explanation:
Answer: The correct option is (A). x = 3.
Step-by-step explanation: We are given to find the solution of the following quadratic equation :
[tex](x-2)(x+10)=13.[/tex]
We have
[tex](x-2)(x+10)=13\\\\\Rightarrow x^2-2x+10x-20=13\\\\\Rightarrow x^2+8x-20-13=0\\\\\Rightarrow x^2+8x-33=0\\\\\Rightarrow x^2+11x-3x-33=0\\\\\Rightarrow x(x+11)-3(x+11)=0\\\\\Rightarrow (x-3)(x+11)=0\\\\\Rightarrow x-3=0,~~~x+11=0\\\\\Rightarrow x=3, -11.[/tex]
So, the solution of the given equation is x = 3 and x = -11.
Thus, the correct option is (A). x = 3.
A fish is swimming at 500 KM/hour and suddenly as shark appears behind, for 5 seconds the fish is swimming in the same direction but increases its speed to 2500 Km/H What is its average acceleration?
Answer:
[tex]a =111.1\ m/s^2[/tex]
Step-by-step explanation:
The formula to calculate the average acceleration is:
[tex]a =\frac{s_2-s_1}{t_2-t_1}[/tex]
Where s is the speed of the object and t is the time it takes the object to change its speed [tex]s_1[/tex] to the speed [tex]s_2[/tex]
In this case we have that:
[tex]t_2-t_1 = 5\ sec[/tex]
[tex]s_1 = 500\ km/h = 500*\frac{1\ h}{3600\ s}*\frac{1000\ m}{1\ km}=138.89\ m/s[/tex]
[tex]s_2= 2500\ km/h = 2500*\frac{1\ h}{3600\ s}*\frac{1000\ m}{1\ km}=694.44\ m/s[/tex]
[tex]a =\frac{694.44-138.89}{5}\ m/s^2[/tex]
[tex]a =111.1\ m/s^2[/tex]
What is the area (in square units) of the region under the curve of the function f(x)=x+3, on the interval from x=1 to x=3 ?
Answer:
10 square units
Step-by-step explanation:
We want to find the area under the curve [tex]f(x)=x+3[/tex] from x=1 to x=3.
We use definite integrals to find this area.
[tex]\int\limits^3_1 {x+3} \, dx[/tex]
We integrate to obtain:
[tex]\frac{x^2}{2}+3x|_1^3[/tex]
We evaluate the limits to get:
[tex]\frac{3^2}{2}+3(3)-(\frac{1^2}{2}+3(1))[/tex]
[tex]4.5+9-0.5-3=10[/tex]
Therefore the area under the curve from x=1 to x=3 is 10 square unit.
Find f-1 for the function f(x)=4x+2 MATH 3 question. 10 points. HELP NEEDED.
Answer:
f^-1(x) = (x - 2)/4 ⇒ 1st answer
Step-by-step explanation:
* Lets revise how to find the inverse function
- At first write the function as y = f(x)
- Then switch x and y
- Then solve for y
- The domain of f(x) will be the range of f^-1(x)
- The range of f(x) will be the domain of f^-1(x)
* Now lets solve the problem
∵ f(x) = 4x + 2
∴ y = 4x + 2 ⇒ switch x and y
∴ x = 4y + 2 ⇒ subtract 2 from both sides
∴ x - 2 = 4y ⇒ ÷ 4 both sides
∴ (x - 2)/4 = y
∴ f^-1(x) = (x - 2)/4
* f^-1(x) = (x - 2)/4
If x/-9=-18 what does x equal
Answer: X is equal to 162
Step-by-step explanation:
You multiply the result of -18 by the -9 because these two would equal the number for X.
Negative times a negative is a positive.
Answer: 162
StepsEquation: x / -9 = -18
Multiply both sides by -9
x / -9( -9 ) = ( -18 )( -9 )
Simplify (Multiply -18 by -9)
x = 162
Vic sells ice creams.
The table shows the midday temperature and her sales for five days.
Mon Tues Wed Thur Fri
Temperature (°C) 24 30 28 19 17
Sales (£)
225 260 230 180 150
Work out Vic's total profit for the five days.
This table shows Vic's costs.
Ingredients 12% of sales
Fuel £9 per day
Answer:
Hi the answer is 874.6
Step-by-step explanation:
1. Add all numbers to equal 1,045
2. Times the number by 12% so .12
to equal 125.4
3 subtract 125.4 by 1045 to equal 919.6
4. Times 9 by 5(the number of days) to equal 45
5. Finally subtract 45 by 919.6 to equal 874.6
Hope this helped. Have a great day!
The total profit of Vic for the five days of sales given the cost of ingredients and fuel is £874.60.
What is the total profit?Total profit is the total revenue less total cost.
Total revenue = 225 + 260 + 230 + 180 + 150 = £1045
Cost of ingredients = 12% x 1045 = $125.40
Total fuel = £9 x 5 = £45
Profit = £1045 - £45 - £125,40 = £874.60
To learn more about profit, please check: https://brainly.com/question/26181966
In the given right triangle, find the missing length.
12 m
39 m
28 m
14 m
Answer:
a = 12
Step-by-step explanation:
pythag. theorem.
a^2 + b^2 = c^2
a = ?
b = 1225
c = 1369
solve
uwu
Please help right away
Answer:
177 balls
Step-by-step explanation:
Let's start with the space we need for each sphere. If we approximate the value of the area to that of a cube that has the same dimensions of the diameter
[tex]V=H*W*D=0.8*0.8*0.8= 0.51 inches3
I can calculate the volume of the box as
[tex]V=H*W*D=3*4*7.5= 90 inches3
Finally I divide the volume of the box between the volume I need for each sphere Vt/Vs= 90/0.51 ≅ 177 balls
a computer that normally costs $500 is on sale for 15% off. if a person makes 5% commission on sales, how much should he get for selling this computer
Answer:
$21.25
Step-by-step explanation:
$500 * (1-.15)=$425 Sales Price
$425 * .05= $21.25 Commission
A text message plan costs $3 per month plus $0.37 per text. Find the monthly cost for x text messages
Answer:
C=3+.37x
Step-by-step explanation:
C=cost/month
x=number of messages sent
Answer:
3 + 0.37x
Step-by-step explanation:
A text message plan costs $3 per month plus $0.37 per text.
Cost of x message with the given rate = (0.37x)
Total monthly cost = ( 3 + 0.37x )
Therefore, monthly cost of x messages will be represented by 3 + 0.37x
Factor the polynomial
4m² + 10m + 4
Answer:
2 (2m+1) (m+2)
Step-by-step explanation:
4m² + 10m + 4
Factor out a 2
2(2m^2 +5m+2)
2 (2m+1) (m+2)
Help, hurry up please
For this case we must find an expression equivalent to:
[tex]\frac {\sqrt [7] {x ^ 2}} {\sqrt [5] {y ^ 3}}[/tex]
By definition of properties of powers and roots we have:
[tex]\sqrt [n] {a ^ m} = a ^ {\frac {m} {n}}[/tex]
So, rewriting the expression we have:
[tex]\frac {x ^ {\frac {2} {7}}} {y ^ {\frac {3} {5}}} =[/tex]
By definition of power properties we have:
[tex]a ^ {- 1} = \frac {1} {a ^ 1} = \frac {1} {a}[/tex]
So:
[tex]x ^ {\frac {2} {7}} * y ^ {- \frac {3} {5}}[/tex]
Answer:
Option A
Answer:
The correct answer is second option
(√x²/⁷)(√y⁵/³)
Step-by-step explanation:
Points to remember
Identities
Xᵃ * Xᵇ = x⁽ᵃ⁺ᵇ⁾
Xᵃ/Xᵇ = X⁽ᵃ⁻ᵇ⁾
1/Xᵃ = X⁻ᵃ
X¹/ᵃ = 1/Xᵃ
To find the correct option
From the figure we can see that,
7√x²/5√y³
Using identities we can write,
7√x²/5√y³ = (√x²/⁷)/(√y³/⁵
= (√x²/⁷) * (√y⁵/³)
Therefore the correct answer is second option
(√x²/⁷)(√y⁵/³)
10.
The class was asked to find the area for a circle with a diameter of 12cm. Brandy solved the
problem showing all her work. Find and explain the error Brandy made. Then solve for the
correct answer
A= her?
A= 3.14 x 122
A = 452.2cm
Answer:
383.08
Step-by-step explanation:
Multiply 3 times 122 which is 366
Then multiply .14 times 122 which is 17.08
Then add.
Final answer:
Brandy's mistake was not converting the diameter to the radius before applying the area formula A = πr². The correct area of a circle with a diameter of 12 cm is 113.04 cm², but it should be reported as 110 cm² to maintain two significant figures.
Explanation:
The error in Brandy's solution for finding the area of a circle with a diameter of 12 cm lies in not first converting the diameter into the radius. The formula for the area of a circle is A = πr², where r is the radius and π (pi) is approximately 3.14. Since the radius is half of the diameter, for a diameter of 12 cm, the radius is 6 cm. Thus, the correct calculation is A = 3.14 × 6².
Correct solution:
A = 3.14 × 6 cm²
A = 3.14 × 36 cm²
A = 113.04 cm²
As for the significance of figures, since the radius has two significant figures (6 cm), the calculated area should also be limited to two significant figures, rounding to 110 cm².
Find the slope of the line.
Answer:
-1/4
Step-by-step explanation:
Answer:y=mx+b
Step-by-step explanation:
y would be the slope of the beginning of equation
Don’t do number 1 if you don’t want to but if you want to knock yourself out or you can just to number three and call it a day
Hello there!
3: (12 + x) ÷ 3 or [tex]\frac{12 + x}{3}[/tex]
1: $6.30
To solve 3, look at the parts of the question.
"The quotient of.." means you are dividing.
"12 increased by a number" means you are adding a certain number to 12, which can be modeled by 12 + x.
"Divided by 3" Means the previous phrase, or 12 + x, is being divided by 3.
You can model the equation as: (12 + x) ÷ 3 or [tex]\frac{12 + x}{3}[/tex].
To solve 1, find the unit rate for the cost per bag of ice.
$3.60 / 4 bags = $0.90 a bag.
Now, multiply the unit rate by the number you are trying to find (7).
$0.90 x 7 = $6.30. This is your final answer.
I hope this was helpful, and have a great rest of your day! If you need more help with these specific questions let me know in the comments! ~ Saturns
Number Three: y=12+x/3
Number One: $0.90(7bags)= $6.30 ***See explanation below**
To solve number one, you'd have to find the unit rate.
Since you pay $3.60 for every 4 bags, you have to find the price per bag.
$3.60 / 4 bags = $0.90
Now, since unit price is proportional, you'd multiply .90 by 7 bags.
$0.90(7bags)= $6.30.
(I'm bored sooo....)
Hope this helps,
L@c3y
A function is defined as follows: For which x-values is y = -9? Select all that apply.
-4.5
-3
3
9
Answer:
3
Step-by-step explanation:
y = -9 when x = 3
When x = -4.5, the first definition of the function will be used since -4.5 is less than -3. In this region, y = -x implying that when x = -4.5, y= 4.5.
When x = 3, the last definition of the function will be used since 3 is greater than -2. In this region, y = -x^2 implying that when x = 3, y= -9.
Answer:
3
Step-by-step explanation:
How do I solve this?
A quadratic function is shown.
f(x) = 3x² + 30x + 27
What is the minimum value of this function? (Hint: complete the square)
The minimum happens at x = -b/2a
x = -30 / 2(3) = -30/6 = -5
Now replace x in the equation with -5 and solve:
3(-5)^2 + 30(-5) +27 = 75 - 150 + 27 = -48
The minimum is at (-5,-48)
The min is x= -b/2a
X=-30/2(3)
-30/6= -5
Volleyball Quiz (PLZ HELP)
Question 1 (1 point)
You must be serving to earn points
Question 1 options:
True
False
Question 2 (1 point)
You are allowed 2 serves per side per point
Question 2 options:
True
False
Question 3 (1 point)
A perfect play is Bump-Set-Spike
Question 3 options:
True
False
Question 4 (1 point)
You must win by 2 points
Question 4 options:
True
False
Question 5 (1 point)
If the ball hits the net it is considered:
Question 5 options:
Fair
Side-out
Out
In
1. True. You have to serve to earn points
2.false. You get one serve
3. True
4. True
5. Fair
Answer:
You must be serving to earn points
Question 1 options:
True <---
False
Question 2 (1 point)
You are allowed 2 serves per side per point
Question 2 options:
True
False <---
Question 3 (1 point)
A perfect play is Bump-Set-Spike
Question 3 options:
True <---
False
Question 4 (1 point)
You must win by 2 points
Question 4 options:
True <---
False
Question 5 (1 point)
If the ball hits the net it is considered:
Question 5 options:
Fair
Side-out <---
Out
In
Step-by-step explanation:
I just did the quiz and I got %100. These were the answers. I hope it helps :)
The population of a town increased from 5600 to 6300 people. What was the percent of increase
well, the difference is just 6300 - 5600 = 700.
if we take 5600 to be the 100%, what is 700 off of it in percentage?
[tex]\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 5600&100\\ 700&x \end{array}\implies \cfrac{5600}{700}=\cfrac{100}{x}\implies 8=\cfrac{100}{x} \\\\\\ 8x=100\implies x=\cfrac{100}{8}\implies x=\cfrac{25}{2}\implies x=12.5[/tex]
Answer:
12.5
Step-by-step explanation:
How many solution does the system contain
Answer:
0
Step-by-step explanation:
Solutions of systems are found where the graphs intersect one another. These 2 functions will never intersect, therefore, there is no solution. It is known as inconsistent.
a regular pentagon had a perimeter of 25m and an area of 43.75m2 find the perimeter of a similar pentagon whth an area of 175m2
Answer:
50 cm
Step-by-step explanation:
Since the figures are similar then
linear ratios = a : b
area ratios = a² : b²
Here the ratio of areas = 43.75 : 175 = 1 : 4, thus
linear ratios = 1 : 2
The larger pentagon has a perimeter = 2 × 25 = 50 cm
18 Carmen and Abe act out a math problem. Carmen puts
7 counters each into 3 different cups. Abe takes 3 of the count
How many counters does Carmen have left? Circle the letter
of the correct answer.
A
24
B 21
C 18
D 15
Jim chose A as the correct answer. How did he get that answe
Answer:
the answer is C
Step-by-step explanation:
if there are 3 cups and he put seven in each then multiply 7 by 3 and you get 21 then take 3 away and you have 18
Carmen has 18 counters left.
Explanation:To find out how many counters Carmen has left, we need to subtract the number of counters taken by Abe from the initial number of counters Carmen had.
Carmen initially had 7 counters in each of the 3 cups, so she had a total of 7 x 3 = 21 counters.
Abe took 3 counters, so we subtract 3 from 21 to find that Carmen has 18 counters left.
Therefore, option C, 18, is the correct answer.
Learn more about counters here:https://brainly.com/question/34484346
#SPJ2
17. The distance between (2, 1) and (n, 4) is 5 units. Find all possible values of n.
Answer:
6=n and -2=n
Step-by-step explanation:
The distance between two points is found by
d = sqrt(( x2-x1)^2 + (y2-y1)^2)
5 = sqrt(( n-2)^2 + (4-1)^2)
5 = sqrt(( n-2)^2 + (3)^2)
Square each side
5^2 = sqrt(( n-2)^2 + (3)^2)^2
25 = ( n-2)^2 + (3)^2
25 = (n-2)^2 +9
Subtract 9 from each side
25-9 = (n-2)^2 +9-9
16 = (n-2)^2
Take the square root of each side
sqrt(16) = sqrt( (n-2)^2)
±4 = n-2
Add 2 to each side
2±4 = n-2+2
2 ±4 = n
2+4 =n and 2-4 =n
6=n and -2=n
How is eight thousand,seventy-six written in standard form
8,076 ....................
Answer:
8076
Step-by-step explanation:
You need a 4-digit number. The leftmost digit is the thousands digit (T). The next digit to the right is the hundreds digit (H). The third digit from the left is the tens digit (E), and the rightmost digit is the ones digit (O).
Using T, H, E, and O, as shown above, the number will have the form:
THEO
Now you replace each letter with the correct digit.
"eight thousand, seventy-six" has no hundreds, so let's include hundreds:
"eight thousand (T = 8), zero hundreds (H = 0), and seventy (E= 7)-six (O = 6)"
8076
The important thing is to remember to include a 0 as the digit for the hundreds place.
a company has 340,000.00 worth of equity. Their liability is $195,000.00. What are the company's assets?
Answer:
The company's assets are 535,000.00.
Step-by-step explanation:
To find the company assets we can use the formula:
Assets = Liabilities + Equity
In the given question,
Liabilities = 195,000.00
Equity = 340,000.00
Putting values in the above formula:
Assets = Liabilities + Equity
Assets = 195,000.00 + 340,000.00
Assets = 535,000.00
So, the company's assets are 535,000.00.