Answer:
a. There is nothing wrong with Mary's reasoning b. 2 water lilies.
Step-by-step explanation:
a. This is because, she reasons that if she doubles the amount of water lilies she buys, it would take half the time it takes to produce 10,000 lilies. So, there is nothing wrong with Mary's reasoning.
b. Since it takes 1 water lily to produce 10000 lilies in 20 days, 1 water lily will produce x lilies in 10 days.
So, x = 10000 × 10/20 = 5000 lilies
So, 1 water lily produces 5000 lilies in 10 days.
So, x water lilies will produces 10000 lilies in 10 days.
So x = 10000 × 1/5000 = 2 water lilies
So, 2 water lilies will produce 10000 lilies in 10 days.
So, Mary needs 2 water lilies so she can meet her goal of having the pond surface covered in 10 days.
(-4c2+7cd+8d)+(-3d+8c2+4cd)=
Answer:
4c² + 11cd + 5d
Step-by-step explanation:
To add monomials, you have to look at the variables that are accompanied by their coefficients. In the given problem, (–4c2 + 7cd + 8d) + (–3d + 8c2 + 4cd), you can combine both cd ut nt cd and c² and cd and d and d and c² because they have different variables.
(–4c2 + 7cd + 8d) + (–3d + 8c2 + 4cd)
(-4c² + 8c²) + (7cd + 4cd) + (8d - 3d)
4c² + 11cd + 5d
Answer:
4,11,5
Step-by-step explanation:
A pentagon has angle measures of 100, 105, 110, and 115. Find the fifth angle measure.
Answer:
110
Step-by-step explanation:
Which function is increasing and has a constant slope?
O A.
B.
y = 10(0.2)
4x + 3y = 14
6.1 5y 10
C.
OD.
y
www
2+ + 1
please helppppppp :(((
Answer:
y = 1/2x - 1
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASEquality PropertiesAlgebra I
Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
Slope-Intercept Form: y = mx + b
m - slope b - y-interceptStep-by-step explanation:
Step 1: Define
Find points from the graph.
x-intercept (2, 0)
y-intercept (0, -1)
Step 2: Find slope m
Substitute: [tex]m=\frac{-1-0}{0-2}[/tex]Subtract: [tex]m=\frac{-1}{-2}[/tex]Simplify: [tex]m=\frac{1}{2}[/tex]Step 3: Write linear equation
y = 1/2x - 1
Answer:
its y = 1/2 x - 1
Step-by-step explanation:
why did math tutor delete my question?!?!??!
what are the six regions of the united states
Answer:
New England.
Mid-Atlantic.
The South.
Mid-West.
The Southwest.
The West.
Step-by-step explanation:
The table of values represents a linear function g(x), where x is the number of days that have passed and g(x) is the balance in the bank account:
x g(x)
0 $600
3 $720
6 $840
Part D: What is the balance in the bank account after 7 days? (2 points)
Answer:
880
Step-by-step explanation: Every three days the balance increases by 120 so you would divide 120 by 3 to get 40. This would mean that the balance increases by 40 everyday so after seven days the balance would be 880
Solve for X
-18x + 21 > - 15 OR 20x - 13 greater than or equal to 27
answers:
-x< -2 or x greater than or equal to 2
-x = -2
-x greater than or equal to 2
-There are no solutions
-All values of x are solutions
C, x is greater than or equal to 2
Step-by-step explanation:
Both equations have X equaling to 2
please help im struggling
Answer:
a = 6
b = 3
c = 2
Step-by-step explanation:
Since n(P) = a+b = 9
and n(Q) = b+c = 5
and b is given to be 3
a and b follow easily.
a is 9-b = 9-3 = 6
c is 5-b = 5-3 = 2
a line through the point (5,-2) and parallel to the line 4x+6y=10
Answer: y = mx + b
4x - 6y = 10
-6y = -4x + 10
y = (-4/-6)x + 10/-6
y = (2/3)x - 5/3
m = 2/3
b = -5/3
Step-by-step explanation:
Use the distributive property to remove the parentheses.
(w+11)8
Answer:
Done!
Step-by-step explanation:
8(w + 11)
8w + 88
9514 1404 393
Answer:
8w +88
Step-by-step explanation:
Each of the terms inside parentheses multiplies the factor outside:
(w + 11)8 = w·8 +11·8 = 8w +88
3) Monica is listening to Spotify. She noticed that during one hour, 15 songs were played and 3 of them were country. What is the ratio of country songs to the number of songs played? *
A:5/1
B:1/15
C:1/3
D:1/5
Answer:
D. 1/5
Step-by-step explanation:
The ratio would be 3/15 and when it's reduced it is 1/5
I hope this helps
What is the cost of each item? What is the subtotal? What is the tax? What is the total paid? Shoes: $49.99 (normally) they are on sale for 25% off Jacket: $137.99 (normally) it is on sale for 33% off Pack of Cookies: $4.49 7.3% Sales Tax What is the cost of each item? What is the subtotal? What is the tax? What is the total paid?
Answer:
Cost of shoes = $37.4925
Cost of jacket = $92.4533
Tax = $9.81
Total paid = $144.2458
Step-by-step explanation:
Normal price of shoes = $49.99
Discount = 25%
Discounted price:
[tex]\$49.99 - \$49.99\times \dfrac{25}{100} = \$37.4925[/tex]
Normal price of jacket = $137.99
Discount = 33%
Discounted price:
[tex]\$137.99 - \$137.99\times \dfrac{33}{100} = \$92.4533[/tex]
Price of pack of cookies = $4.49
No discount on cookies as per question statement.
Total amount without tax = $37.4925 + $92.4533 + $4.49 = $134.4358
Sales Tax = 7.3% of total amount without tax = 7.3% [tex]\times[/tex] $134.4358 = $9.81
Total paid = $134.4358 + $9.81 = $144.2458
Find the slope and a point on the line. y-9=-1/3(x-4)
Answer:
slope- -1/3
a point: (0, [tex]\frac{31}{3}[/tex])
Step-by-step explanation:
y-9= -1/3(x-4)
y-9= -1/3x+4/3
y= -1/3x+31/3
to find a point:
y= -1/3(0)+31/3
y=31/3
(this happens when x= 0, so the point is (0,31/3)
Answer:
m=-1/3
Point: (4,9)
Step-by-step explanation:
i just took the question and got it right on ed2020
What percent of 40 is 20?
Answer:
8
Step-by-step explanation:
When doing these types of problems, we convert the percent to a decimal. In this case,
40%=0.4
0.4*20=8
Answer:
200%
Step-by-step explanation:
20 = 100% (in this case)
40 = 200% (because you multiply both sides to get 40)
Therefore, 40 is 200% of 20.
Please help!!
Find x and CB
Answer:
x is -9
CB is 10
Step-by-step explanation:
In order to solve this question we need to figure out what x is first
First we do
2(x+19)=x+29
Then we get 2x+28=x+29
subtract and divide to get
x=-9
Plug in the x to get CB
-9+19=10
The graph represents this system of equations. A system of equations. y equals 4. y equals 3 minus StartFraction on-half EndFraction x. A coordinate grid with 2 lines. The first line passes through (negative 2, 4) and (0, 3). The second line passes through (negative 2, 4) and (0, 4). What is the solution to the system of equations?
Answer:
A coordinate grid with 2 lines. The first line passes through (negative 4, negative 3), (0, negative 3), and (4, negative 3). The second line passes through (0, negative 5) and (2, 4). The lines appear to intersect at about one-half, negative 3.
Solve the system of equations algebraically. Verify your answer using the graph.
y = 4x – 5
y = –3
What is the solution to the system of equations?
((StartFraction one-fourth EndFraction, negative 3), –3)
((StartFraction one-half EndFraction, negative 3), –3)
(–3, (negative 3, StartFraction 2 over 3 EndFraction))
Step-by-step explanation:
Answer:
its a
Step-by-step explanation:
i just did it
While Justin is in training he has to drink 500 ml of water per day. How many liters will that be for one week?
Answer:
3.5 Liters
Step-by-step explanation:
Since 500 ml is equal to 0.5 liters and there are 7 days in a single week you just need to multiple the number of liters (0.5) by the 7 days to get a total of 3.5 liters
What is the equation of the line that goes through (-3,-1) and (3,3)
Answer:
3
Step-by-step explanation:
The radius of the cone is 7 in and y = 25 in. What is the volume of the cone in terms of π? A cone with a right triangle formed from its dimensions; the value of the height is h, and the value of the slant height is y; the height x and the radius form a right angle at the center of the cone.
Answer:
142.1π in³
Step-by-step explanation:
Given that:
The radius (r) = 7 in
The slant height (y) = 25 in
Then the height (x) can be determined by using the Pythagoras rule:
y² = x² + r²
25² = x² + 7²
125 = x² + 49
125 - 49 = x²
x² = 76
x = √76
x = 8.7
The formula for the volume of a cone is;
= 1/3 πr²h
where;
height(h) is calculated as "x" from above = 8.7
Then;
= 1/3 × π × (7 in)² × 8.7 in
= 142.1π in³
Answer:
its A. 392
Step-by-step explanation:
took the test. hope this helps
What is the simplified value of the expression below?
Negative 2.6 + 5.8
Answer:
3.2
Step-by-step explanation:
Sam ran 3 1/2 miles in 25 minutes. If he continues running at this pace how far will he run in 1 hour
Answer: 8.4 or 8 2/5
Step-by-step explanation:
3 1/2 for 25 minutes and 0.14 miles per minute so 0.14 * 60 since there are 60 minutews in a hour and you get ur answer.
A shop sells chocolate, vanilla, and strawberry ice cream cones. If 45% of the ice cream sold is chocolate and 17% is strawberry, what percent that is sold is vanilla?
Answer:
38 %
Step-by-step explanation:
45 + 17 is 62. Soif you add 38% + 62% you'll get 100% !
Hope this helps! ^O^
Find the area of this sector.
19cm length on side 118degree angle in centre
Answer:
87.68 cm²Step-by-step explanation:
Arc length:
118*2πr/360 = 19 cm118*3.14r/180 = 19r = 19*180/118*3.14r = 9.23 cmArea of sector:
A = πr²*118/360 A = 3.14*9.23²*118/360A = 87.68 cm²2/5+6/10
What is the answer
We have to make sure the denominators are equal.
10 goes into 5 evenly, so we only need to multiply one term to get a common denominator.
Multiply 2 by 2, and get 4, then we multiply 5 by 2 and get 10
Now the equation is 4/10 + 6/10
Since our denominators match, we can add the numerators.
4 + 6 = 10
That gives us the sum, which is 10/10 aka 1 whole
your welcome :) (btw can u please give brainly?)
Answer:
2/5 + 6/10 = 1
Step-by-step explanation:
first let’s change 2/5 so it has the same denominator as 6/10.
2/5 * 2/2 = 4/10
now add
4/10 + 6/10 = 1
Find the total surface area of this square based
pyramid.
10ft
10 ft
[? ]ft?
Answer:
300 [tex]ft^{2}[/tex]
Step-by-step explanation:
area of triangle= [tex]\frac{b*h}{2}[/tex]
[tex]\frac{10*10}{2}[/tex] = 50
4 sides of the triangle
4*50=200
area of square= l*w
10*10=100
area of square+area of triangles
200+100=300
_[tex]ft^{2}[/tex]=300[tex]ft^{2}[/tex]
Answer: 300
Step-by-step explanation:
At the local dairy farm, Kareem buys a 32-oz container of yogurt for $0.48. Are the cost, y, in dollars and the amount of yogurt, x, proportional?
Answer:
The formula should be y=0.015x
Step-by-step explanation:
Each oz of yogurt costs $0.015.
Not sure if this helps, but i hope it does :)
Quinton bought n number of shares for d dollars and paid a 1% commission. He sold the stock for y dollars and paid a flat fee of
$7. Which expression below models Quinton's net proceeds algebraically?
oyn(1.01d - 7).
(1.01nd + 7) - Y
y - 1.01(nd - 7)
y (1.01nd + 7)
Answer:
y - (1.01nd + 7)
Step-by-step explanation:
Quinton bought n number of shares for d dollars and paid a 1% commission. It means he bought [tex]\dfrac{1}{100}nd=0.01nd[/tex]
He sold the stock for y dollars and paid a flat fee of $7. It means he sold y-7.
We need to find Quinton's net proceeds algebraically. It will be given as :
[tex]y-7-0.01nd\\\\=y-(0.01nd+7)[/tex]
Hence, the correct option is (d) i.e. y - (1.01nd + 7)
5≤3y+8<17 solve and graph
What are two coordinates on this graph?
Answer:
(0,5) and (6,0)
Step-by-step explanation:
Jack bought 5 pairs of socks for $12.50. At this rate, how much would 12 pairs of socks cost?
Answer: $30
Step-by-step explanation:
5 pairs of socks cost 12.50 you divide 12.50 by 5 and you how much each pair of socks cost which is 2.5 which is 2.50 each pair of socks is 2.50 so now you multiply 2.50 by 12 and you get $30