Answer:
You have to give the number by which the 20% is increased in order to cross multiply and divide by a hundred to find the missing % of the decrease. Otherwise, you would simply subtract 20% from 100%, which seems unlikely to be the answer. We need more information.
Step-by-step explanation:
a downtown parking lot charges $5 per hour
Parking charges for first 2hours =$5 per hour after 2 hours parking charges = $2.50per hour
Will give brainliest for correct answer.
Answer:
16.00 cm
Step-by-step explanation:
r = 13 m,
Surface area A = 2πrh + 2πr² = 2πr (h + r)
2,285.92 =2*3.14*13 (13 + h)
2,285.92 = 81.64 (13 + h)
13 + h = 2,285.92/81.64 = 28.00
so h = 28.00 - 12 = 16.00 cm
How many hours between 7:30 and 14:30
Answer:
7
Step-by-step explanation:
You can think of it as counting normally in a way where you can go
7:30 then add an hour to get 8:30 and so on until you hit 14. The better way of doing this using this is to just subtract the hours if the minutes are the same.
Which of the following values are zeros for the function below? Select all that apply.
g(x) = (x2 + 4x – 12)(x – 3)
Answer:
The roots (zeros) are the x values where the graph intersects the x-axis. To find the roots (zeros), replacey with 0 and solve for x.
x=2,−6,3
Step-by-step explanation:
draw three circles with centre 0 and the radii of 3cm, 5cm and 7cm respectively
Why 21/100 greater than 1/5
Answer:
because it is
Step-by-step explanation:
1/5 equals 20/100. 21 is greater than 20, so 21/100 is bigger
I'm confused please help me
Answer:
11.25
Step-by-step explanation:
75% × 15 = (75/100) × 15 = 11.25
9. Elijah had three sets of five marbles. He gave 6 marbles to his sister and had three sets of three marbles left. What does the equation look like?
3x (5 - 6) = 3 x 3
3 x 5 - 6 = (3x3)
• (3×5) – 6= 3x3
(3x6) - 5 = 3x3
Answer:
(3x5) -6 = 3x3
Step-by-step explanation:
So we know that elijah starts with 3 sets of 5 marbles each.
This can be thought of as 3 x each set, or 3 x 5.
Elijah then gives away 6 marbles from this set, or in other words subtracts 6.
How can this be put into a equation, however?
We know that we are taking 3x5, and subtracting it by 6. However it isnt as simple as 3x5-6.
It would have to be (3x5)-6, since your sets are a total of 15, or 3x5. This total is being subtracted to by 6.
This can be written as:
(3x5)-6
The only equation in your list that looks like this would be the third one, where:
(3x5)-6 = 3x3
So this would be your answer!
Hope this helps! :3
How does the presence of carbon dioxide in the atmosphere help life to flourish on Earth? Choose all that apply.
by reflecting all solar radiation that falls on Earth
by reflecting UV rays from the Sun back into space
by absorbing an adequate amount of solar radiation
by increasing the thickness of the atmosphere around Earth
by maintaining warm temperatures required for life on Earth
Answer:
I think it's by mantaining the warm temperatures required for the life on the Earth
Find the distance between the points (0,15) and (8,0).
Answer:
the distance i believe between the points are
(1,1) , (3,3)
(7,9) , (0,3)
(1,2) , ( 3,9)
Step-by-step explanation:
PLS HELP ME, PLS THIS IS DUE FIRST CORRECT ANSWER GETS BRAINLIEST
What number should be added to both sides of the equation to complete the square?
x + 3x = 6
Will give brainliest whoever answers *correctly* first! Btw doing this to see who gets it first :)
Give the area of the shape below.
Answer: 122 sq. ft.
Step-by-step explanation: First is a have to multiply 13 x 8 to find the area of the rectangle. Next, you have to find the area of the right triangles by multiplying 3 x 3 which would give you the area of two of the right triangles. Multiply 3x3 by 2 to find the area of all four right triangles combined. Finally, add 3 x 3 x 2 (18 sq. ft), to 13 x 8 (104 sq. ft). 18 + 104 = 122 sq. ft.
Using words, describe how you would solve the following problem. Make sure to also give your final answer.
two and three fourths plus three and three fourths equals
please answer this now I need to know it now......
!??!?!???!!???!??!???????
Answer:
6 1/2
Step-by-step explanation:
[tex]2 \frac34 + 3\frac34[/tex]
Convert them to improper fractions by multiplying the whole number by the denominator of the fraction, adding this to the numerator of the fraction, then putting it over the denominator:
[tex]2 \frac34 + 3\frac34=\dfrac{2 \times 4+3}{4}+\dfrac{3 \times 4+3}{4}=\dfrac{11}{4}+\dfrac{15}{4}[/tex]
As the fractions have the same denominator, we can simply add the numerators:
[tex]\dfrac{11}{4}+\dfrac{15}{4}=\dfrac{11+15}{4}=\dfrac{26}{4}[/tex]
Convert back to a mixed number by dividing the numerator by the denominator. Writing the whole number followed by the remainder over the denominator:
[tex]\dfrac{26}{4}=6\frac24=6\frac12[/tex]
can anyone help? Estimate the amount of the tip by rounding the bill to the nearest dollar before calculating.
20% tip on a bill of $64.15
Answer:
$12.80
Step-by-step explanation:
You are asked to estimate the tip by rounding the bill amount. The tip is the product of the (rounded) bill amount and the tip rate.
rounded bill = $64.00
tip rate = 20% = 0.20
estimated tip = 0.20 × $64.00 = $12.80
y= 6x+5
y= --x+1 find the intersection point
Answer:
(-0.8, 0.2)
Step-by-step explanation:
assuming that the double negative on the x is not a typo.....
if it is the intersection point is (4/7, 1 4/7)
so this is a test that's due tomorrow and I don't understand anything (I'm probably gonna fail)
Answer:
20%
Step-by-step explanation:
760 over 950 is .8, so the difference is 20%
I NEED HELP ASAP
Part A: The Grand Prismatic Spring in Yellowstone discharges 8,400 gallons of water at a rate of 560 gallons a minute. Using m for minutes, write an equation that represents this situation.
Part B: video (0:28-0:43) Using the equation you wrote in Part A, how many minutes does it take for 8,400 gallons of water to discharge? Use 1-2 sentences to explain your answer.
Part C: video (0:28-0:43) How many gallons of water are left in the Spring after 7 minutes? Use 1-2 sentences to explain how you determined this amount.
Part D: video (0:44-1:17) Using the Mohs scale of hardness as outlined in the video, if Feldspar is three times as hard as cardboard,c, write an equation and solve to find the hardness scale of cardboard. Use 1-2 sentences to explain the hardness scale of cardboard and how it relates to Feldspar.
a) The equation [tex]V(m) = 8400 - 560\cdot m[/tex] represents the discharge of the Grand Prismatic Spring.
b) The discharge of the Grand Prismatic Spring takes 15 minutes.
c) The remaining quantity after 7 minutes is 4480 gallons.
d) The hardness of cardboard is 2.
How to apply concepts of linear functions
a) In this case, the volume of water ([tex]V[/tex]), in gallons, decreases linearly in time ([tex]m[/tex]), in minutes. Then, we could model the situation by using the following expression:
[tex]V(m) = V_{o} - \dot V \cdot m[/tex] (1)
Where:
[tex]V_{o}[/tex] - Initial volume, in gallons.[tex]\dot V[/tex] - Discharge rate, in gallons per minute.If we know that [tex]V_{o} = 8400\,gal[/tex] and [tex]\dot V = 560\,\frac{gal}{min}[/tex], then the volume of the Grand Prismatic Spring is represented by this expression:
[tex]V(m) = 8400 - 560\cdot m[/tex] (2)
The equation [tex]V(m) = 8400 - 560\cdot m[/tex] represents the discharge of the Grand Prismatic Spring. [tex]\blacksquare[/tex]
b) By (1) and [tex]V(m) = 0[/tex] we find the time required for discharge:
[tex]m = \frac{0 - 8400}{-560}[/tex]
[tex]m = 15\,min[/tex]
The discharge of the Grand Prismatic Spring takes 15 minutes. [tex]\blacksquare[/tex]
c) The quantity of gallons remaining is found by evaluating the function for [tex]m = 7[/tex]:
[tex]V(7) = 8400 - 560\cdot (7)[/tex]
[tex]V(7) = 4480\,gal[/tex]
The remaining quantity after 7 minutes is 4480 gallons. [tex]\blacksquare[/tex]
d) According to Mohs scale, the hardness of feldspar is 6. The statement indicates the following relationship, as there is a constant relationship between both hardnesses:
[tex]y = 3\cdot x[/tex] (3)
Where:
[tex]x[/tex] - Hardness of cardboard.[tex]y[/tex] - Hardness of feldspar.
If we know that [tex]y = 6[/tex], then the hardness of cardboard is:
[tex]x = \frac{6}{3}[/tex]
[tex]x = 2[/tex]
The hardness of cardboard is 2. [tex]\blacksquare[/tex]
To learn more on linear functions, we kindly invite to check this verified question: https://brainly.com/question/17058347
The scatter plot shows the relationship between the number of years an employee has work and the annual salary of that employee.
(Scatter plot picture is above)
1. The slope of the line is ___.
2. The intercept of the line is __.
3. The regression equation is y=__+__x.
Answer:
Step-by-step explanation:
HELPPPPPPPP ASAPPPPP:
Answer:
3
Step-by-step explanation:
What is the area of this figure
Answer:
sum of all side
8+22+6+8+8+17+5+5+13+4
100 is the area of this figure
Step-by-step explanation:
please mark me brainleat
he test scores of the students in four classes are summarized below. Answer the questions about them.
Class A: The mean score is 123 and the range of scores is 26.
Class B: The mean score is 115 and the range of scores is 32.
Class C: The mean score is 114 and the range of scores is 28.
Class D: The mean score is 120 and the range of scores is 34.
(a) Based on the information above, which class has the lowest scores on average?
Class A
Class B
Class C
Class D
(b) Based on the information above, which class's scores have the most variability?
Class A
Class B
Class C
Class D
Answer:
A.) would be class C. B.) Would be class D.
Class C has the lowest mean score out of them all meaning it has to have the lowest score. And Class D has the most range of scores meaning it has to have more variabitlity.
Step-by-step explanation:
Hope this helped.
A brainliest is always appreciated.
Please answer URGENT
Ric is half Paul's age. Tom is 2 years younger than Paul. The sum of all their ages is 33 years Show all working clearly to find Ric's age
Answer:
Ric is 7 years old.
Step-by-step explanation:
Choose variables for everyone's ages. I'll choose [tex]r[/tex] for Ric's age, [tex]p[/tex] for Paul's age, and [tex]t[/tex] for Tom's age.
Since Ric's age is half of Paul's age, we can write this equation:
[tex]r=\frac{1}{2}p[/tex]
Since Tom is two years younger than Paul, we can write this equation:
[tex]t=p-2[/tex]
Since the sum of all their ages is 33 years, we can write this equation:
[tex]r+p+t=33[/tex]
Since we know [tex]t[/tex] and [tex]r[/tex] in terms of [tex]p[/tex], we can replace them in the equation above as follows:
[tex]r+p+t=33\\(\frac{1}{2}p)+p+(p-2)=33[/tex]
Now we can solve for [tex]p[/tex] to find [tex]r[/tex] later:
[tex](\frac{1}{2}p)+p+(p-2)=33\\\frac{5}{2}p-2=33\\\frac{5}{2}p=35\\5p=70\\p=14[/tex]
Now that we know that [tex]p=14[/tex], we can substitute 14 for [tex]p\\[/tex] in the equation[tex]r=\frac{1}{2}p[/tex]:
[tex]r=\frac{1}{2}p\\r=\frac{1}{2}(14)\\r=7[/tex]
Ric is 7 years old.
The volume of the prism please help
Answer:
42
Step-by-step explanation:
Find the length with and height.
This would be 3, 2 and 7.
Multiply.
V=whl
=2·7·3
=42m^3
(42 cubic meters because we calculated volume and they didn't give an exact measurement.)
SOMEONE HELP ME WITH THIS PROBLEM PLS!!!!!
Find the maximum(s), minimum(s), interval(s) of increasing, interval(s) of decreasing, end behavior and symmetry for the function f(x)=x^4-8x^2+16. SOMEONE HELP ME WITH THIS PROBLEM PLS!!!!!
Find the maximum(s), minimum(s), interval(s) of increasing, interval(s) of decreasing, end behavior and symmetry for the function f(x)=x^4-8x^2+16.SOMEONE HELP ME WITH THIS PROBLEM PLS!!!!!
Find the maximum(s), minimum(s), interval(s) of increasing, interval(s) of decreasing, end behavior and symmetry for the function f(x)=x^4-8x^2+16.SOMEONE HELP ME WITH THIS PROBLEM PLS!!!!!
Find the maximum(s), minimum(s), interval(s) of increasing, interval(s) of decreasing, end behavior and symmetry for the function f(x)=x^4-8x^2+16.SOMEONE HELP ME WITH THIS PROBLEM PLS!!!!!
Find the maximum(s), minimum(s), interval(s) of increasing, interval(s) of decreasing, end behavior and symmetry for the function f(x)=x^4-8x^2+16.SOMEONE HELP ME WITH THIS PROBLEM PLS!!!!!
Find the maximum(s), minimum(s), interval(s) of increasing, interval(s) of decreasing, end behavior and symmetry for the function f(x)=x^4-8x^2+16.SOMEONE HELP ME WITH THIS PROBLEM PLS!!!!!
Find the maximum(s), minimum(s), interval(s) of increasing, interval(s) of decreasing, end behavior and symmetry for the function f(x)=x^4-8x^2+16.SOMEONE HELP ME WITH THIS PROBLEM PLS!!!!!
Find the maximum(s), minimum(s), interval(s) of increasing, interval(s) of decreasing, end behavior and symmetry for the function f(x)=x^4-8x^2+16.SOMEONE HELP ME WITH THIS PROBLEM PLS!!!!!
Find the maximum(s), minimum(s), interval(s) of increasing, interval(s) of decreasing, end behavior and symmetry for the function f(x)=x^4-8x^2+16.SOMEONE HELP ME WITH THIS PROBLEM PLS!!!!!
Find the maximum(s), minimum(s), interval(s) of increasing, interval(s) of decreasing, end behavior and symmetry for the function f(x)=x^4-8x^2+16.SOMEONE HELP ME WITH THIS PROBLEM PLS!!!!!
Find the maximum(s), minimum(s), interval(s) of increasing, interval(s) of decreasing, end behavior and symmetry for the function f(x)=x^4-8x^2+16.SOMEONE HELP ME WITH THIS PROBLEM PLS!!!!!
Find the maximum(s), minimum(s), interval(s) of increasing, interval(s) of decreasing, end behavior and symmetry for the function f(x)=x^4-8x^2+16.SOMEONE HELP ME WITH THIS PROBLEM PLS!!!!!
Find the maximum(s), minimum(s), interval(s) of increasing, interval(s) of decreasing, end behavior and symmetry for the function f(x)=x^4-8x^2+16.SOMEONE HELP ME WITH THIS PROBLEM PLS!!!!!
Find the maximum(s), minimum(s), interval(s) of increasing, interval(s) of decreasing, end behavior and symmetry for the function f(x)=x^4-8x^2+16.SOMEONE HELP ME WITH THIS PROBLEM PLS!!!!!
Find the maximum(s), minimum(s), interval(s) of increasing, interval(s) of decreasing, end behavior and symmetry for the function f(x)=x^4-8x^2+16.SOMEONE HELP ME WITH THIS PROBLEM PLS!!!!!
Find the maximum(s), minimum(s), interval(s) of increasing, interval(s) of decreasing, end behavior and symmetry for the function f(x)=x^4-8x^2+16.SOMEONE HELP ME WITH THIS PROBLEM PLS!!!!!
Find the maximum(s), minimum(s), interval(s) of increasing, interval(s) of decreasing, end behavior and symmetry for the function f(x)=x^4-8x^2+16.SOMEONE HELP ME WITH THIS PROBLEM PLS!!!!!
Find the maximum(s), minimum(s), interval(s) of increasing, interval(s) of decreasing, end behavior and symmetry for the function f(x)=x^4-8x^2+16.SOMEONE HELP ME WITH THIS PROBLEM PLS!!!!!
Find the maximum(s), minimum(s), interval(s) of increasing, interval(s) of decreasing, end behavior and symmetry for the function f(x)=x^4-8x^2+16.SOMEONE HELP ME WITH THIS PROBLEM PLS!!!!!
Find the maximum(s), minimum(s), interval(s) of increasing, interval(s) of decreasing, end behavior and symmetry for the function f(x)=x^4-8x^2+16.SOMEONE HELP ME WITH THIS PROBLEM PLS!!!!!
Find the maximum(s), minimum(s), interval(s) of increasing, interval(s) of decreasing, end behavior and symmetry for the function f(x)=x^4-8x^2+16.
Answer:
Step-by-step explanation:
f(x) = x⁴ - 8x² + 16
f'(x) = 4x³ - 16x = 4(x³ - 4x) = 4x(x² - 4) = 4x(x - 2)(x + 2)
f'(x) = 0, x = 2, -2
f"(x) = 4(3x² - 4)
f''(0) = -16 < 0, f""(2) = f''(-2) 3(12 - 4) > 0
so f(2) and f(-2) are minimum values
f(0) is maximum value.
f(0) = 16, f(2) = f(-2) = 2⁴ - 8*2² + 16 = 0
Maximum = 16, minimum value = 0
-∞ < x < -2, f'(x) < 0
-2 < x < 0, f'(x) > 0
0 < x < 2, f'(x) < 0
2 < x < ∞, f(x) > 0
increase: (-2, 0) and (2, ∞)
decrease: (-∞, -2) and (0, 2)
An audio cable is 14.5 dm long. How long is the cable in meters?
Simplify: 3√28 + 4√7 + 2√32
Answer:
10√7+8√2
Step-by-step explanation:
easy question please help
Answer:
1/6
Step-by-step explanation:
she broke off 2 squares of a 12 square bar which is 2/12 or 1/6
The price of an item has been reduced by 45%. The original price was $40. What is the price of the item now?
