Answer:
2L + 2W = 26 or L + W = 13
Step-by-step explanation:
Assume L is length and W is width.
2 times length = 2L
plus = "+"
2 times width = 2W
is = "="
twenty-six = 26
Suppose you have 20 coins that total $3.00. Some coins are nickels and some are quarters. Which of the following pairs of equations would you use to find out how many of each coin you have?
A. n + q = 30
5n + 25q = 20
B. n + q = 30
n + q = 3.00
C. n + q = 3.0020
0.05n + 0.25q = 3.00
D. n + q = 20
5n + 25q = 300
Answer: D. n + q = 20
5n + 25q = 300
Step-by-step explanation:
Let n represent the number of nickels that you have.
Let q represent the number of quarters that you have.
Suppose you have 20 coins. It means that
n + q = 20
The total value of the coins is $3. The value of a quarter is $0.25 and the value if a nickel is $0.05. Therefore, the equation would be
0.05n + 0.25q = 3
Multiplying both sides of the equation by 100, it becomes
5n + 25q = 300
The correct option is
D. n + q = 20
5n + 25q = 300
Answer:
D
Step-by-step explanation:
You bought a wake board boat 4 years ago for $45,000. The boat's value depreciates by 10%
per year.
Answer:
it would be about $18000 in value
Step-by-step explanation:
:)
An artist can sell 20 copies of a painting at $100 each, but for each additional copy he makes, the value of each painting will go down by a dollar. if 22 copies are made, each will sell for $98. How many copies should he make to maximize his sales?
Answer:
60
Step-by-step explanation:
math
Answer:
60
Step-by-step explanation:
The function for the total profit is going to be [tex]f(x)=(20+x)(100-x)[/tex] because the profit is the number of paintings multiplied by the number of dollars per painting, and for each additional painting the cost goes down by one. Multiplying this out, you get the quadratic function [tex]f(x)=-x^{2}+80x+2000[/tex]. We are trying to find the maximum, or the vertex, and we do not care about the y-coordinate of the vertex, which is the dollar amount, we only care about the x coordinate. We can find the x coordinate by using [tex]-b/2a[/tex] , which gives -80/-2 or 40. Now, we must remember that we started with 20 paintings, so adding 20 to 40 we get 60, the final answer.
!28 POINTS! I need help quick!! The area of a rectangle is 2x^2-7x-15. Determine binomials that represent the length and the width if this triangle.
Answer:
(2x +3 )(x-5)
one is the length and one is the width
Step-by-step explanation:
2x^2-7x-15
Factor
(2x )(x )
What are the factors of -15? -1*15 and -3*5, 3*-5 , 1*-15
We need 2* one factor ± the other factor = -7
2*-5 +3 = -7
That means the -5 is on the outside and the +3 is on the inside
(2x +3 )(x-5)
Need help with this pls!!
Show work pls
Answer:
He has 7 nickels, 14 dimes, and 21 quarters.
Step-by-step explanation:
Let d = number of dimes.
Let n = number of nickels.
Let q = number of quarters.
The value of a dime is $0.10, so d dimes are worth 0.1d
The value of a nickel is $0.05, so n nickles are worth 0.05n
The value of a quarter is $0.25, so q quarters are worth 0.25q
The value of all coins combined is the sum of the values above, and it equals $7.00
0.1d + 0.05n + 0.25q = 7
The number of dimes = 2 times the number of nickels, so
d = 2n
The number of quarters = 3 times the number of nickels, so
q = 3n
Now we substitute 2n for d and 3n for q in our equation above.
0.1d + 0.05n + 0.25q = 7
0.1(2n) + 0.05n + 0.25(3n) = 7
0.2n + 0.05n + 0.75n = 7
n = 7
He has 7 nickels.
d = 2n = 2(7) = 14
He has 14 dimes.
q = 3n = 3(7) = 21
He has 21 quarters.
Answer: He has 7 nickels, 14 dimes, and 21 quarters.
Answer: He has 7 nickels, 14 dimes, and 21 quarters.
Step-by-step explanation:Did this one before and got it right!
help ASAP
find the volume of the cone and cylinder please
Answer:
This is for cylyinder
V=πr2h
2723.76
Alex knows that 4×20=80.
Select the three statements that are true.
Answer:
Don't Know
Step-by-step explanation:
I'm sorry to say this but I can't answer this full equation without knowing what the three statements are.
Connie has 84 feet of red ribbon 48 feet of blue ribbon and 72 feet of blue ribbon she wants to cut the ribbons into equal lengths that are as long as possible so that no ribbon is wasted
Answer:
Connie can cut the ribbon into 12 foot pieces.
Step-by-step explanation:
For these problems we should find the GCF, which is 12.
5 1/2 by 4 3/4 by 1/4 scale it down by 1/10
Answer:
(11/20 by 19/40 by 1/40) OR (0.55 by 0.475 by 0.025)
Step-by-step explanation:
To scale down a set of measurements, simply multiply the original measurement by the factors you're scaling it by. For example, take the first measurement of 5 1/2. To scale this down, I turned the value into an improper fraction (11/2) to make the multiplication process easier. Then, I multiplied 11/2 by the factor of 1/10.
After that, I got 11/20, which is the new first measurement.
HELP ASAP‼️‼️ A walkway surrounds a rectangular garden. The width of the garden is 5 feet, and the length is 4 feet. The width s of the walkway around the garden is the same on every side. Write an expression that represents the total area of the garden and walkway.
___ s^2+_____s+______
Answer:
=4x^2 +28x+48
Step-by-step explanation:
Width of the garden is 8
There is walkway on each side of width so add x on each side
With the walkway is x+8+x = 2x+8
Length of the garden is 6
There is walkway on each side of length so add x on each side
With the walkway is x+6+x = 2x+6
The area of the garden is
A = lw
A = 8*6 = 48
The area of the walkway and garden is
A = lw
= (2x+8) (2x+6)
FOIL (first outer inner last)
= 4x^2 + 12x + 16x +48
=4x^2 +28x+48
will mark brainliest :)
Answer:
B and E
Step-by-step explanation:
The 2 in front of the x^3 stretches it vertically and the +8 shifts it up.
Answer:
hi
Step-by-step explanation:
A club consisting of 6 juniors and 8 seniors is to be formed from a group of 13 juniors and 16 seniors. How many different clubs can be formed the group?
Answer:
22084920
Step-by-step explanation:
Given the function f(x) = 2/3 * x - 5 , evaluate f(9)
Answer:
1
Step-by-step explanation:
Find the 72nd term of the arithmetic sequence -27, -11, 5,...
Answer:
1109
Step-by-step explanation:
So the pattern is + 16
So if you start from -27, the second term is -27 + 16 * 1
The 72nd term will be -27 + 16 * 71
16 * 71 = 1136
-27 + 1136 = 1109
Find the volume of the prism.
The volume is
cubic inches.
Answer:
3/10 cubic in.
Step-by-step explanation:
V= w*h*l= 3/5 times 3/4 times 2/3 = ...
3/10 cubic in. simplified
Hope this helps :D
The volume of a cuboid is 3/10 cubic inches.
What is the volume?Volume is the measure of the capacity that an object holds.
Formula to find the volume of the object is Volume = Area of a base × Height.
Given that, length of a cuboid = 2/3 in., Breadth of a cuboid=3/5 in., and height of a cuboid = 3/4 in.
We know that, the volume of a cuboid = Length×Breadth×Height
= 2/3 × 3/5 × 3/4
= 1/5 × 3/2
= 3/10 cubic inches
Therefore, the volume of a cuboid is 3/10 cubic inches.
To learn more about the volume visit:
https://brainly.com/question/13338592.
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A drum company advertises a snare drum that is 2 inches high and 12 inches in diameter. Find the volume
of the drum to the nearest tenth. Use 3.14 for
The volume of the drum is about
ins.
Answer:904.78
Step-by-step explanation:
From my last question, I was wondering if anyone could help me with part 2:
The zeros are x= __. (Use a comma to separate answers.)
Answer:
x = - 1, x = 3
Step-by-step explanation:
The zeros are the points on the x- axis where the graph crosses, that is
x = - 1, x = 3
Answer:
Step-by-step explanation:
zeros are where curve cuts x-axis
so zeros are -1,3
1. FIND THE MEAN OF 8, 15, 10, 22, 16, 4
2. THE MEAN OF 42, X, 26, 58, 38 IS 40. FIND X
3. THE MASSES OF FIVE BAGS ARE 38.6KG, 40.5KG, 46.8KG, 30.7KG, 44.4KG. CALCULATE THE MEDIAN MASS.
4. FIND THE MODE OF THESE NUMBERS 10, 8, 13, 16, 14, 9, 5, 18, 13, 8
5. CALCULATE THE RANGE OF THE FOLLOWING SETS OF DATA. 10, 11, 13, 14, 17, 19, 15, 12, 12, 15.
Answers:
1. 12.5
2. 36
3. 40.5 kg
4. 13 and 8
5. 9
Look at the attached picture
Hope it will help you...
Good luck on your assignment
-10 + x + 4 – 5 = 7x – 5 i know the answer its -1 help please
Answer:
x = -1
Step-by-step explanation:
- 10 + x + 4 - 5 = 7x - 5
-11 + x = 7x - 5
-6 + x = 7x
-6 = 6x
x = -1
Answer:
x= -1
Step-by-step explanation:
Step 1: combine like terms
-10+x+4-5=7x-5----------> -10-5+4+x=7x-5-------->-11+x=7x-5
Step 2: Isolate the variable
-11+x=7x-5-------------> -11+5-x+x=7x-x+5-5-------> -6=6x
Answer:
x= -1
In a rhombus whose side measures 20 and the smaller angle is 38°. Find the length of the larger diagonal, to the nearest tenth.
A rhombus diagonals form right angles. The diagonals also cut in half the angles
use cosine: cos38 = [tex]\frac{a}{20\\\\}[/tex]
a = 20cos38
a=15.8
Find the distance between the points (11, 15) and (11, 6).
Answer:
9
Step-by-step explanation:
Answer:
Step-by-step explanation:
The distance between the pounts 11 and 15 is: 15-11=4 and the distance between 11 and 6 is: 11-6=5
I hope it'll help you much
Thank you for asking
An object is moving in a straight line. It initially travelz at a speed on 9 meters per second, and speeds up at a constant rate of 2 meters per second each second. Under such conditions, the distance (d), in meters, that the object travels is given by the equation 2 d t t=+ 9, where t is in seconds. According to this equation, how long will it take the object to travel 22 meters?
Answer:13 meters per second
Step-by-step explanation:
what is the average rate of change of g over the interval [-1 2]
Answer:
j
Step-by-step explanation:
The average rate of change of g over the interval [-1, 2] is -2.67.
What is Average Rate of Change of a Function?Average rate of change of a function is defined as the rate at which the value of the function is changing with respect to the change in the input values.
Given a function g.
Given interval is [-1, 2].
Average rate of change = [g(2) - g(-1)] / [2 - -1]
= (-3 - 5) / (3)
= -8/3
= -2.67
Hence the average rate of change is -2.67.
Learn more about Average Rate of Change here :
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If DE is congruent to KR and O is the midpoint of ER and DK, which of the following congruence postulates can be used
to prove that the triangles are congruent.
SAS
SSS
ASA
HL
Answer:
ASA
Step-by-step explanation: I'm not sure I had just found a key.
Answer:
its SAS
Step-by-step explanation:
HELP ASAP ASAP!!!!!!!!!!!!!!!!! HELP NOWWWWWWWWWW!
Answer:
the answer is A
Step-by-step explanation:
an isosceles triangle is a triangle with two congruent sides and one not congruent to the others
Answer:
A
Step-by-step explanation:
the isosceles triangle has at least two equal sides and so does triangle W
can somebody explain what the problem is explaining to me
Answer:
The problem basically is saying that find two numbers that add up to 8, where one is three times the other.
Step-by-step explanation:
The best thing to do here is to write a simple system of equations.
b+y=8
b=3y
The first equation means that the total blue paint plus the total yellow paint is equal to 8 ounces.
The second equation means that the blue paint is equal to 3 times the yellow paint.
We can isolate b in the first equation to get b=-y+8
-y+8=3y
8=4y
y=2.
So we have that she needs two ounces of yellow paint.
Therefore she needs six ounces of blue paint.
Drag the yellow bar to 2, and the blue bar to 6.
Hope this helps!
Find the length of the side of a square whose area is 36 m2.
6 m
11 m
4 m
10 m
Answer:
6 m
Step-by-step explanation:
plz mark brainliest!
help pls i give u brainliest and 5 stars
Answer:
Surface area means all 6 sides
TOP side= 2 multiplied by 5
Bottom = 2 multiplied by 5
Right face = 2 multiplied by 8.1
Left face = 2 multiplied by 8.1
Back side = 5 multiplied by 8.1
front side = 5 multiplied by 8.1
10+10+16.2+16.2+40.5+40.5 = 133.4 cm ^2
Answer:
133.4 cm²
Step-by-step explanation:
The opposite faces of the cuboid are congruent, thus
front/ back = 2(8.1 × 5) = 2 × 40.5 = 81 cm²
top/ bottom = 2(5 × 2) = 2 × 10 = 20 cm²
sides = 2(8.1 × 2) = 2 × 16.2 =32.4 cm²
Thus
Surface area = 81 + 20 + 32.4 = 133.4 cm²
What is the perimeter of this tile?
Answer:
6x2=12
Step-by-step explanation:
Answer:
thats 12
Step-by-step explanation:
and ik that for a fact because u need to multipy
Try It!
» Joaquin wants to reduce the number of winners so he
does not have to prepare as many prizes. Choose
another sum he could use as a winning sum, and
predict the number of winners if 500 people play his
game.
Answer:
Late, but is it 78?
Step-by-step explanation: