Answer:
25%
Step-by-step explanation:
Ajay has a piggy bank which has one-rupee and two-ruppe coins. The number of 2 rupee coins is twice the number of 1 rupee coins.the total amount of money in the piggy bank is 30 rupees. How many 1 rupee and 2 rupee coins are there in the piggy bank?
Answer:
6 one rupee and 12 two rupee coins.
Step-by-step explanation:
If the number of rupee coins is x then the number of 2 rupee coins is 2x.
x + 2*2x = 30
5x = 30
x = 6.
find the perimeter of the figure below, composed of a rectangle and a semicircle. round to the nearest tenths place 4 9
Answer:
36.28 units
Step-by-step explanation:
perimeter of rectangle and perimeter of semi circle
2(l +h) + 1/2 (pid) + d
2(4+9)+ 1/2 (3.14 ×4) +4
2(13) + 10.28
=36.28 units
About 8% of the population has a particular genetic mutation. 800 people are randomly selected. find the mean for the number of people with the genetic mutation in such groups of 800. (round to 2 decimal places if possible.)
Answer:
64 people
Step-by-step explanation:
multiply the number by of people the precentage who have genetic mutation (divide percentage by 100 before multiplying) 0.08 x 800 = 64
jeff can solve 16 math problems in 25 minutes. How many problems can he solve in 42 minutes?
Answer:
27
step by step explanationfrom the explanation,
let the number of maths that can be solved in 42 minutes = X
16 maths--------------25minutes
x maths --------------42 minutes
cross multiplying
X×25= 16×42
dividing bothsides by 25
25X/25 = 16×42/25
X = 672/25
X = 26.88 = 27 (approximately)
therefore 27 problems can be solved in 42 minutes
What is the scale factor of the dilation of triangle def? three-tenths three-sevenths seven-thirds 7
The scale factor of the dilation of triangle def is three-tenths i.e. 3/10
How to determine the scale factor of dilation?From the complete question, the corresponding sides are:
DE = 10
D'E' = 3
The scale factor k is then calculated using"
DE * k = D'E'
So, we have:
10* k = 3
Divide both sides by 10
k = 3/10
Hence, the scale factor of the dilation of triangle def is three-tenths i.e. 3/10
Read more about dilation at:
https://brainly.com/question/3457976
#SPJ4
Answer: 3/10
Step-by-step explanation:
4. Andrew purchased some drinks and some chips. Each bag of chips cost $2.00 and each drink cost $2.50. The expression 2x + 2.5y gives the total amount of money spent by Andrew on chips and drinks. What is the meaning of the term 2.5y?
A. The number of chips plechased by Andrew
B. The cost of one drink
C. The total amount spent on drinks by Andrew
D. The number of drinks purchased by Andrew
Answer:
The answer is C, the total amount spent on drinks
HELP! need help ASAP, 50 points and brainiest will be given to whoever helps.
Answer:
10
Step-by-step explanation:
which of the tables represent a function?
(sorry for the bad photo)
15 points!
Answer:
Table B
Step-by-step explanation:
A function is present when x-value can only have a single y-value.
In Table A, the x-value 5 corresponds to 2 y-values : 3 and 2, hence it is not a function.In Table B, each x-value corresponds to a single y-value, hence it is a function.Can someone please answer my trigonometry problem? I've been trying to get answers all day for something so minimal.
Find each measurement indicated. Round your answers to the nearest tenth.
Answer:
∠B ≈ 30.0°
Step-by-step explanation:
The law of sines can be used to solve a triangle when two sides and an angle opposite one of them are given.
__
sin(B)/b = sin(C)/c
sin(B) = (b/c)sin(C) . . . . solve for sin(B)
sin(B) = (14/28)sin(91°) ≈ 0.49992385
The angle is found using the inverse sine function:
B = arcsin(0.49992384) ≈ 29.99496°
Rounded to tenths, the angle is ...
m∠B ≈ 30.0°
_____
Additional comments
Many triangle solver apps and web sites are available if all you want is an answer.
When using your calculator, be sure the angle mode is set to "degrees."
The Law of Sines can also be used to solve a triangle when two angles and one side are known.
Caroline's favorite animal is the dolphin. One of the dolphins in the tank is 4 meters long. What is its length in centimeters?
Answer:
400 centimeters
Step-by-step explanation:
hope this helps. have a nice day
Order the following integers from least to greatest: -32, -43, -28, -22 and 13
Answer:
-22, -28, -32, -43, 13
Step-by-step explanation:
If it is after the digit 0 it will be less than any number above itself.
The cost of a taxi fare is $5 plus $1.50 per kilometre travelled. a) Derive a formula for calculating the cost, $P, of travelling n km. b) Use your formula to calculate the cost of travelling 25 km. please help me
Answer:
Step-by-step explanation:
Formula
P = 5 + 1.50n
P is the total Cost
n is the number of Km travelled.
Solution
Substitute n = 25 into the formula
P = 5 + 1.5 * 25
P = 5 + 37.5
P = 42.50
Answer
42.50 dollars for 25 km.
Determine the interquartile range for the following data 1,15,16,16,19,24,25
Answer:
IQR = 9
Step-by-step explanation:
Q3 = 24
Q1 = 15
24-15=9
Give brainliest, please!
Hope this helps :)
Solve the equation by factoring. 2x^2 + 6x = -4
Answer:
x=-2 x=-1
Step-by-step explanation:
2x^2 + 6x = -4
Add 4 to each side
2x^2 + 6x +4= -4+4
2x^2 + 6x +4=0
Factor out 2
2( x^2 +3x+2) = 0
Divide by 2
x^2 +3x +2 =0
( x+2)(x+1) =0
Using the zero product property
x+2 =0 x+1 =0
x=-2 x=-1
Answer:
x = -1, -2
Step-by-step explanation:
Bring the constant term to the left hand side :
2x² + 6x = -42x² + 6x + 4 = 0Divide throughout by 2 :
(2x² + 6x + 4)/2 = 0/2x² + 3x + 2 = 0Splitting the middle term :
x² + x + 2x + 2 = 0x(x + 1) + 2(x + 1) = 0Factors obtained :
(x + 1)(x + 2)Finding the zeros :
x + 1 = 0 ⇒ x = -1x + 2 = 0 ⇒ x = -2Solve the equation 3x²− 55 = 92
x = 7 and -7
x = 7
x = 8 and -8
x = 49
Answer:
the answer is x=7 and -7
Hope this helps!!
does someone mind helping me with this problem? Thank you!
[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]
Let's calculate its surface area ~
[tex] \sf SA = Area (2 × \triangle) + Area ( three \: \square)[/tex]
[tex] \sf SA =(2 \cdot \dfrac{1}{2} \cdot8 \cdot6 ) + (7 \cdot10) + (7 \cdot 8) + (7 \cdot6)[/tex]
[tex] \sf SA =(48 ) + (7 0) + (56) + (42)[/tex]
[tex] \sf SA =216 \: m {}^{2} [/tex]
Wyatt has a loyalty card good for a discount at his local hardware store. To find the
total he has to pay, before tax, he multiplies the prices by 0.8. What percent discount
does the card give?
Answer:
80%
Step-by-step explanation:
You multiple .8 by 100 to find percentage, giving you 80%.
Answer:
i don’t know
Step-by-step explanation:
I don’t know
How many 1-centimeter sugar cubes would be needed to form this rectangular prism?
Answer:
your question is not complete
the quotient if b and 3 is greater than or equal to 19
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
[tex]\diamond\large\blue\textsf{\textbf{\underline{\underline{Question:-}}}}[/tex]
The quotient of b and 3 is greater than or equal to 19.
[tex]\diamond\large\blue\textsf{\textbf{\underline{\underline{Answer and how to solve:-}}}}[/tex]
✥First, the word "quotient" indicates that we divide.
Here we have "the quotient of b and 3", so we divide b by 3:-
[tex]\hookrightarrow[/tex][tex]\sf{b\div3}[/tex]
Now, this expression is greater than or equal to 19:-
[tex]\sf{b\div3\geq 19}[/tex]
How to Solve for b
✳︎ Multiply by 3 on both sides:-
[tex]\sf{b\geq 19\times3}[/tex]
On simplification,
[tex]\sf{b\geq 57}[/tex]
So the values of b greater than or equal to 57 will make this inequality true.
Let's solve another one.
✳︎ A number y increased by 5 is at least -21.
First, "increased" means we add 5.
Since y is increased by 5, we add 5 to y:-
[tex]y+5[/tex]
Now this expression is at least -21, which means it can't be less than -21, thus, it's greater than or equal to -21, which looks as follows:-
[tex]\sf{y+5 \geq -21}[/tex]
[tex]\rule{300}{1}[/tex]
[Solving for y]
Subtract 5 on both sides:-
[tex]\sf{y \geq -21-5}[/tex]
On simplification,
[tex]\sf{y \geq -26}[/tex]
So the values of y greater than or equal to -26 will make this inequality true.
Good luck with your studies.- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
factor by grouping
NEED HELP ASAP
# after letters are the exponent
1: 28v+16v2-21v-12
2: 49x3-35x2+56x-40
3: 24r3-64r2-21r+56
Answer and step-by-step explanation:
[tex]28v^3 +16v^2-21v-12 =[/tex] collecting [tex]4v^2[/tex] in the first two terms and [tex]-3[/tex] in the last two:
[tex]4v^2(7v+4)-3(7v+4) =[/tex] collecting the bracket
[tex](7v+4)(4v^2-3)[/tex]
Bonus stage: if you are factoring over the real numbers and not over the rational, the second brackets is a difference of squares. Else, you stop here.
[tex](7v+4)(2v+\sqrt3)(2v-\sqrt3)[/tex]
NEXT!
[tex]49x^3-35x^2+56x-40=[/tex]As before, [tex]7x^2[/tex]in the first two, and [tex]8[/tex] in the last two:
[tex]7x^2(7x-5)-8(7x-5)[/tex] collecting the bracket again
[tex](7x-5)(7x^2-8) =[/tex]again, bonus step
[tex](7x-5)(\sqrt7 x +2\sqrt2) (\sqrt7x-2\sqrt2)[/tex]
FINALLY!
[tex]24r^3-64r^2-21r+56 =\\8r^2(3r-8) -7(3r-8)=\\(3r-8)(8r^2-7) =[/tex]Again, bonus step
[tex](3r-8)(2\sqrt2r+\sqrt7)(2\sqrt2r-\sqrt7)[/tex]
Since usually most courses talk about factorization of polynomials BEFORE talking about real numbers, I would stop at the third stage, skipping the fourth.
What is the length of segment
Answer: square root of 53
Step-by-step explanation:
did the math
b) What is the measure of ZE? Explain how you know. (1 point)
i cant give you a answer because there is no other problems
[tex]\huge\color{yellow}\underline \colorbox{violet} {\color{red}{QUESTION}}[/tex]
in the pic
Can someone solve this for me real quick
Answer:
Square
Step-by-step explanation:
a plane figure with four equal straight sides and four right angles.
Find the vertex. f(x) = 9x²+1
The probability for event A is 0.4, the probability for event B is 0.2, and the probability of events A and B is 0.1.
Why are the events not independent?
The sum of P(A) and P(B) is greater than P(A and B).
The product of P(A) and P(B) is greater than P(A and B).
The product of P(A) and P(B) is not equal to P(A and B).
The sum of P(A) and P(B) is not equal to P(A and B).
The graph below represents the solution set of which inequality?
-5 4 -3 -2 -1 0 1 2 3 4 5
Х
O x2 - 2x -8 < 0
O x2 + 2x -8 < 0
O x2 - 2x - 8>0
O x2 + 2x - 8>0
Answer:
it's x^2+2x-8
Step-by-step explanation:
-4<x<2. I don't know how to explain since I'm not good at English
Dylan bikes to his part-time job, which is 10 mi. from home. If he rides at a constant rate of 8 mph, how long will it take him to get to work? A. 1.25 hr. B. 2.6 hr. C. 4.5 hr. D. 10 hr.
please help me i don't know what im doing
Answer:
y = 3x -4
Step-by-step explanation:
The two pairs of x and y values are used to find the slope of the line. That and one of the pairs is used to find the y-intercept. These values are put into the slope-intercept equation to give the equation of the line through the two points.
__
Each (x, y) pair represents a point on a graph. The slope-intercept equation for a line relates all the (x, y) pairs that lie on the line. That equation is ...
y = mx +b . . . . . . where m is the slope, and b is the y-intercept
slopeThe slope is the "steepness" of the line. It is positive when the line goes up to the right, and negative when the line goes down to the right. It is 0 for a horizontal line.
The slope is found from (x, y) pairs using the formula ...
m = (y2 -y1)/(x2 -x1) . . . . . . where (x1, y1) and (x2, y2) refer to different pairs
m = (8 -(-1))/(4 -1) = 9/3 = 3 . . . . using the (x, y) values from the table
y-interceptThe y-intercept (b) is the y-value where the line crosses the y-axis. It can be found by rearranging the slope-intercept equation shown above:
b = y - mx . . . . . . . for a line with slope m and a point (x, y) on the line
Using the first point listed in the table with the value of m we just found, we see that b is ...
b = -1 - 3(1) = -4 . . . . . . for (x, y) = (1, -1) and m = 3
equationNow that we have found m=3 and b=-4 for the points in the table, we can put these values in the slope-intercept equation:
y = mx +b
y = 3x -4 . . . . . equation of the relationship in the table
calculate the maximum mass of copper thar could be produced
from 4.0 g of copper oxide
So, 3.55 g of copper could be made from 4 g of copper oxide.
The formula for copper oxide to convert to copper is a chemical equation Cupric oxide, or copper (II) oxide, is an inorganic compound with the chemical formula CuO.