Answer:
3 hrs 38.2 min, Candle 2 will be three times the length of candle 1
Step-by-step explanation:
If Dora burns candles that burn for 4 and 5 hours they burn for 9 hours combined one after another.
What are permutation and combination?In arithmetic, combination and permutation are two different ways of grouping elements of a set into subsets. In combination, the components of the subset can be recorded in any order. In a permutation, the components of the subset are listed in a distinctive order.
here,
Dora has three candles, which will burn for 3, 4, and 5 hours,
The combination of the hours of burning,
3 + 4 = 7 hours
4 + 5 = 9 hours
3 + 5 = 8 hours
Thus, if Dora burns candles that burn for 4 and 5 hours they burn for 9 hours combined one after another.
Learn more about permutations and combinations here: https://brainly.com/question/2295036
#SPJ2
the radius of a circle is 20 inches,what is the diameter
Answer:
40 inches
Step-by-step explanation:
Diameter is radius X 2
314.16 hope it helps if not i am truly sorry
Savannah bought barn wood for $60 for 5 pieces. She spent $40 on materials to paint
and design the decorations. She sells each piece of wood for $25. What is her
profit/loss?
6. Find the area of the kite.
A. 16 units
B. 18 units
C. 9 units
D. 8 units
Answer:
Area of a kite = A=1/2× d1 d2
=1/2 × 2×3 = 1×3=3
a =3
Answer:
9 Units
Step-by-step explanation:
What are the coordinates of the two points on the line? Select all that apply.
Answer:
choice 1 and choice 3) (1,8) and (7,1)
Step-by-step explanation:
Amelia bought a t-shirt for $15 and 3 pairs of pants. She spent a total of $117. Which equation matches this problem?
Answer:
The answer of the equation is 15x+3x=117.
Step-by-step explanation:
Jackson bought a jar of 240 marbles. The percent bar graph shows the percentage of each color marble in the jar.
How many of the marbles are yellow?
Answer:
72 marbles are yellow
Step-by-step explanation:
If y varies directly with x and y = 84 when x = 12, find y when x = 11.
Answer:
y= 77
Step-by-step explanation:
Write down the equation for direct proportion.
y= kx, where k is a constant.
Find the value of k.
When x= 12, y= 84,
84= k(12)
12k= 84
k= 84 ÷12
k= 7
Substitute the value of k into the equation.
y= 7x
When x=11,
y= 7(11)
y= 77
2. Mrs Davis bought furniture online. She had to pay 15% in shipping fees. The
items totaled $4,000. How much did the shipping cost?
Answer:
The shipping costed $600.
Step-by-step explanation:
4,000 * 15% = 600
or
4,000 * 0.15 = 600
Help i will give u brainlest
Erin buys gas at a gas station for $4 a gallon. There is a sale going on at the gas station so that anyone who buys more than 5 gallons of gas only has to pay $3 a gallon for each gallon over 5 gallons. If a person buys more than 10 gallons of gas, each gallon over 10 gallons is only $2 a gallon for every gallon over 10 gallons but less than or equal to 15 gallons.. Erin's tank holds 12 gallons of gas.
Answer:
39$
Step-by-step explanation:
20+15+4=39$
The area of a circle is 2.5434 square meters. What is the circle's radius?
Answer:
r= 0.899m
Step-by-step explanation:
A= [tex]\pi[/tex]r²
r=√A/[tex]\pi[/tex]
Answer:
0.8468686471
Step-by-step explanation:
Area of a circle = π r²
2.2534= 3.142*r^2
0.7171865054=r^2
r=Square root of 0.7171865054
=0.8468686471
solving by elimination
7x-y=19
2x-3y=19
Answer:
2x + y = -2, x + 2y = 2
4x + y - 2z = 0, 2x+ 3z = 9 , -6x - 2y + z = 0
x + y = 4 , x - y = 2
Step-by-step explanation:
Answer:
x=2 and y=−5
Step-by-step explanation:
Let's solve your system by elimination.
7x−y=19;2x−3y=19
Multiply the first equation by -3,and multiply the second equation by 1.
−3(7x−y=19)
1(2x−3y=19)
Becomes:
−21x+3y=−57
2x−3y=19
Add these equations to eliminate y:
−19x=−38
Then solve−19x=−38for x:
−19x=−38
(Divide both sides by -19)
x=2
Now that we've found x let's plug it back in to solve for y.
Write down an original equation:
7x−y=19
Substitute2forxin7x−y=19:
(7)(2)−y=19
−y+14=19(Simplify both sides of the equation)
−y+14+−14=19+−14(Add -14 to both sides)
−y=5
y=-5
Four less than x = ??
Answer:
x-4
Step-by-step explanation:
Answer:
x-4
Step-by-step explanation:
A square has its dimensions changed by a scale factor of 3. If the new area is 225 square inches, what was the area of the original square?
A 2-column table with 5 rows. Column 1 is labeled Number of Siblings with entries 0, 1, 2, 3, 4. Column 2 is labeled Students with entries (Jenn, Bill, Rosa, Juan), Cho, (Damon, Mike, Lisa, Lupe, Maggie), blank, Greg.
A small class took a survey of the number of siblings each student has. The data are shown in the table.
Which data representation would be most appropriate to represent each student who has a given number of siblings?
line graph
line plot
bar graph
stem and leaf plot
Answer:
line plot
Step-by-step explanation:
easy algebra question
Answer: 235 people got a real one
Step-by-step explanation:
Toby has created a map of his neighborhood. When he drew the map he noticed his house, his friend's house, and the playground formed a right triangle
Help me with this please
What is 60% of 450?
60
75
240
270
Answer:
270
Step-by-step explanation:
450x60%= 270
OR
450x0.6=270
Answer:
Step-by-step explanation:
270
Help thanks ☺️..... ........
Answer and Step-by-step explanation:
The area of the tile is 9.
To find the area, we multiply the side by another side.
3 times 3 is equal to 9.
#teamtrees #PAW (Plant And Water)
ANYONE IM RUNNING OUT OF TIME!!!!!
Answer:
Y= -5/2x+3
Step-by-step explanation:
A perpendicular slope is always opposite (meaning if the original is negative, then it is positive and vice versa) and reciprocal (meaning the numerator and denominator of the original are flipped).
The y intercept I found by applying the slope to the point given.
Tell whether this equation has no solution, one solution, or infinitely
many solutions.
2x+5=5x-1
O no solution
Oone solution
O infinitely many solutions
Answer:
infinitely many solutions
Step-by-step explanation:
You roll a 6-sided die. What is P(prime)? Write your answer as a percentage.
Answer:
50%
Step-by-step explanation:
n(s) = {1, 2, 3, 4, 5, 6} = 6
n(a) = {2, 3, 5} = 3
p(a) = n(a)/n(s) p(a) = 3/6 p(a) = ½ <==> 50%It takes you 3 hours to drive to a concert 135 miles away. You drive 55 miles per hour on highways and 40 miles per hour on the rest of the roads. Write a system of linear equations that represents this equation. Use x to represent the number of hours driving on a highway and y to represent the number of hours driving on other roads.
Answer:
x + y = 3 (1)
55x + 40y = 135 (2)
Step-by-step explanation:
Since x to represent the number of hours driving on a highway and y to represent the number of hours driving on other roads and the total time for driving is 3 hours,
x + y = 3 (1)
Also, You drive 55 miles per hour on highways and 40 miles per hour on the rest of the roads, the distance moved on highways is 55x and the distance moved on the rest of the roads is 40y (since distance = speed × time).
Since the total distance moved is 135 miles, we have
55x + 40y = 135 (2)
So, the system of linear equations that represent the situation is
x + y = 3 (1)
55x + 40y = 135 (2)
Determine the volume of this prism
Answer:
200cm cubed
Step-by-step explanation:
Remember that volume of a rectangular prism is length x width x height
Answer: A) 200
Step-by-step explanation: The volume of a prism is length x width x height. Substitute the variables in this given prism into the equation.
Length = 10
Width = 5
Height = 4
V = 10 x 5 x 4 = 200
I’ll give brainiest whoever get it right!
Moosa's sister is six years younger than 3 times his age. The sum of their ages is 30. How old is Moosa?
Suppose Moosa is ( x ) years old ,
Thus Moosa's sister is ( 3x - 6 ) years old .
The sum of their ages is 30 :
( x ) + ( 3x - 6 ) = 30 ==》 4x - 6 = 30
==》 4x = 36
==》 x = 9
So Moosa is 9 years old .
1. Jemima wants to make chocolate chip walnut brownles. Chocolate chips come in a 12oz bag that costs $3. Walnuts
come in a 4oz bag that costs $2. If Jemima needs three pounds of chocolate chips and walnuts combined, and has $15
to spend, how many bags of each can she buy?
Answer:
4 bags of chocolate chips and 1 bag of walnuts.
Step-by-step explanation:
Find how many ounces are in 3 pounds:
16 oz = 1 lb
16 oz × 3 = 3 lbs
48 oz = 3 lbs
Variable x = number of chocolate chips
Variable y = number of walnuts
4x + 1y = 15
Keep in mind it must equal up to 48 oz and be $15 or under.
4 bags × 12 oz = 48 oz
1 bag × 4 oz = 4 oz
48 oz + 4 oz = 52 oz > 48 oz
4 bags × $3 = $12
1 bag × $2 = $2
$12 + $2 = $14 < $15
Both requirements have been met.
Susana has four identical square gems. She wants to arrange them to form a larger quadrilateral with four right angles and two pairs of parallel sides. Susana’s assistant says that the quadrilateral must be a square, as shown. Do you agree? If so, explain your reasoning. If not, draw a quadrilateral to support your answer.
Answer: i agree u are right it makes sence
Step-by-step explanation:
Answer: I do not agree
Step-by-step explanation: The picture below meets all the requirements, four right angles, and two parallel lines
what is the answer for C = 12π
What’s the answer of this problem, you
Answer:
A = 216 [tex]m^{2}[/tex]
Step-by-step explanation:
Trapezoid area = [tex]\frac{a+b}{2}h[/tex] = [tex]\frac{11 m+25 m}{2}*12 m[/tex] = 216 [tex]m^{2}[/tex]