Answer:
Step-by-step explanation:
Sally paints ⅛ of a room per hour.
Steve paints ⅙ of a room per hour.
Working together, they paint ⅛ + ⅙ = 7/24 of the job per hour, finishing in 24/7 hours.
A tank is draining water such that the volume is given which an exponentially decreasing graph as shown in the graph below. If the volume was modeled with an equation of the form V=a(b)^t, where t is the number of hours then which of the following is the best value for b?
(1) b=20
(2) b=0.6
(3) b=2.8
(4) b=0.3
Answer:
[tex]b = 0.3[/tex]
Step-by-step explanation:
Given
[tex]V = ab^t[/tex]
See attachment for graph
From the graph
V = 20 when t = 0
This implies that:
[tex]V = ab^t[/tex]
[tex]20 = ab^0[/tex]
[tex]20 = a * 1[/tex]
[tex]20 = a[/tex]
[tex]a = 20[/tex]
Also:
V = 4 when t = 1.5
So:
[tex]4 = ab^{1.5[/tex]
Substitute 20 for a
[tex]4 = 20 * b^{1.5[/tex]
Divide by 20
[tex]0.2 =b^{1.5[/tex]
[tex]b^{1.5} = 0.2[/tex]
Take 1.5th root of both sides
[tex]b = 0.34199518933[/tex]
[tex]b = 0.3[/tex] --- approximated
find the average rate of change of the function y=f(x)=1/(x-1)^2-8 with respect to x on the interval -2≤x≤0
Answer:
The average rate of change is (f(3)-f(0))/3=(7-0)/3=7/3.
Step-by-step explanation:
PLEASE HELP DUE IN 3 minutes
Answer:
Answer is B
Step-by-step explanation:
As part of a school project, Tim and Jesse decide to build a birdhouse. Tim plans to house bluebirds in his birdhouse and Jesse hopes to attract wrens. Tim decides to make the floor of his birdhouse a square that measures
inches on all sides. The piece of lumber that he uses for the floor is
inches wide. How much will he need to cut off of the width of the board to make the floor?
A .3 1/4
B. 2 1/4
C.3 1/2
D. 2 3/4
Answer:
The answer is 2 3/4
Step-by-step explanation:
Write the quadratic equation in standard form.
- 4(x - x²) = 8
Determine if the quadratic function
Answer:
x² - x - 2 = 0
Step-by-step explanation:
Given:
- 4(x - x²) = 8
Find:
Standards form
Computation:
- 4(x - x²) = 8
(x - x²) = -2
x - x² = -2
x² - x - 2 = 0
I need help with the questions I circle only.
Answer:
3:12
4:36
Step-by-step explanation:
( pls dont report me let me kno if it wrong and i will fix it
Solve the equation for x: 126 = 3x.
A. x = 378
B. x = 129
C. x = 123
D. x = 42
Answer:
The answer is answer D, x=42.
Step-by-step explanation:
To isolate the variable, you need to divide both sides of the equation by three, using the division property of equality. 126/3=42 , and 3x/3=x , this gives you 42=x, or x=42, meaning the answer is D.
Yolanda will run more than 33 miles this week. So far, she has run 18 miles. What are the possible numbers of additional miles she will run?
Use t for the number of additional miles she will run.
Write your answer as an inequality solved for t.
Answer:
Based on the question, Yolanda will run less than 26 miles but more than 16 miles (because she has already attained 16 miles in total).
Step-by-step explanation:
sorry if im late
A piece of ribbon is cut into three pieces that have length in the extended ratio of 7:8:9. The length of the ribbon is 96 centimeters. What is the length of each piece of ribbon?
Answer:
28:32:36
Step-by-step explanation:
you add the ratios up all together and divide your answer by 96 the answer you get there you multiply it with the ratios
what is 5/8 with a denominator of 24?
Answer:
Step-by-step explanation:
you multiply 8*3 to get 24 so you do the same to 5. so 5*3 = 15 so 15/24
Of the listed values, which are equal to the sine of B
B
? Select all that apply
Answer:
Step-by-step explanation:
REVIEW SECTION
7. Which of the following statements is not true if A JKL = A MNO?
A. Z) = 2M
C. ZN= 2K
B. ZL220
D. LLUN
i think its ZN=2K
im not sure so please recheck it with someone else
A school buys 1,950 pencils. The pencils are sold in boxes, with 30 pencils in each box. If each box costs $4.05, what is the total cost, in dollars, that the school will pay for the pencils?
If q||r, solve for x.
Answer:
x = 17
Step-by-step explanation:
They are alternate exterior angles, so they are congruent. This means that:
[tex]7x - 10 = 9x - 44\\34 = 2x\\x = 17[/tex]
The value of x, if the lines 7x - 10 and 9x - 44 are parallel, is 17.
What is a line?Lines are defined as objects with an infinite length and no width, depth, or curvature. Lines are one-dimensional objects even though they can occur in contexts that are two, three, or higher dimensional.
Given:
The equations of lines are 7x - 10 and 9x - 44,
As we know, the line parallel has the same slope,
The condition of parallel lines ca be written as,
[tex]L_1 / L_2 = 1[/tex]
Here, L₁ and L₂ are equations of lines,
7x - 10 / 9x - 44 = 1
9x - 44 = 7x - 10
9x - 7x = 44 - 10
x = 34 / 2
x = 17
To know more about the line:
https://brainly.com/question/2696693
#SPJ2
Hello, can someone plz make sure I’m correct. The photo is above !
it looks correct to me
ps. i hate savvas realize
-8x + y = -16
-3x + y = -5
Answer:
x= 11/3
y= 6
Step-by-step explanation:
-8x+y=-16
-3x+y = - 5
Multiply the second equation by -1, we get,
-8x + y = -16
3x -y = 5
--------------------
-3x = -11
x= 11/3
x=11/3. so,
-3×11/3 +y = -5
-11+y=-5
y= -5+11
y=6
A large van is being used for a picnic. There will be 8 people riding in the van, and there are 8 seats in the van (one of which is the driver's seat). One of the 8 people will have to drive, but only 4 of the people are licensed to drive the van. In how many different ways could the people seat themselves in the van so that they have a licensed driver
Answer:
The people can seat themselves in 20160 different ways.
Step-by-step explanation:
Arrangements of n elements:
The number of arrangements of n elements is given by the following formula:
[tex]A_{n} = n![/tex]
In this question:
For the first seat, that is, the driver seat, 4 possible people can sit.
For the remaining 7 seats, the number of ways in which the people can sit is an arrangement of 7 elements. So
[tex]T = 4*7! = 4*5040 = 20160[/tex]
The people can seat themselves in 20160 different ways.
ONE of Michael's birds came out of the cage and flew away.
What is the probability that a yellow bird flew away?
Give your final answer as a decimal number.
Answer:
100.0 bc it is ONE bird or 100%?????
which one is it .....
Answer:
D) n/3 - 7
Step-by-step explanation:
Answer:
D) n/3 - 7
Step-by-step explanation:
n/3 - 7
7 is subtracted (so it's behind) and the quotient (fraction) of n and 3
25 liters of water are pumped into a dam in 20 seconds
how much water will be pumped in within 3 minutes??? help please
1 minute = 60 seconds.
3 minutes x 60 seconds = 180 seconds.
180 seconds / 20 = 9
25 liters x 9 = 225
Total water in 3 minutes = 225 liters
Answer:
225 liters
Step-by-step explanation:
There is 25 liters in 20 seconds, so you keep adding 20 seconds while adding 25 liters each time. 180 = 3 minutes
25 20
50 40
75 60
100 80
125 100
150 120
175 140
200 160
225 180
Does anyone know please
Answer:
the answer would be A 16cm
Write an equation for a term value of 14. Solve your equation.
Answer:
[tex]x {}^{2} - 2x - 1 = 14 \: where \: x = 5[/tex]
A stack of cards are numbered from 1 through 100. If a student selects a card, what is the
probability that the student will select a card that has both the same number in the ones place
and the tens place?
Answer:
10 out of 100
Step-by-step explanation:
Because
Write the equation for a line with a slope of 1/3 that passes through the point 6,12
Answer:
y-12=1/3(x-6)
Step-by-step explanation:
Using the slope intercept form:
[tex]y - yo = m(x - xo) [/tex]
We can see from the given point (6,12) that yo = 12 and xo = 6. The slope, m, is 1/3. Plugging in the values gives us this equation in slope-intercept form that can then be converted to any other form.
Yo this looks so confusing to me can someone answer this oraganized or sum
Answer:
2 units
Step-by-step explanation:
The x-coordinates are
School = 2
House = 5
Count the units (lines) between the two x-coordinates
There are 2 units between them
A realtor receives 7% commission for each home for each home she sells. She sold a home recently, earning a commission of $17,500. What was the sale price of the home?
Answer:
Step-by-step explanation:
if the realtor received a commission of 17,500 dollars which represent only 7% of the price of the house,
the sale price was
(17,500*100)/0.07=250,000
Will give brainliest
a. 336 cubic centimeters
b. 48 cubic centimeters
c. 248 cubic centimeters
d. 168 cubic centimeters
Answer:
A.336 cubic centimeter
Step-by-step explanation:
6cm×8cm×7cm=336
art teacher has 450 sheets of construction paper on first day of school. students used 18 sheets during each school day. how many school days did the construction paper last?
Answer:
25
Step-by-step explanation:
025
18 |450
- 36
090
- 90
00
Solve for the two variables in the following system of equations. 7x-8y=-12
--4x+2y=3
Answer:
x=0, y=3/2. (0, 3/2).
Step-by-step explanation:
7x-8y=-12
-4x+2y=3
----------------
7x-8y=-12
4(-4x+2y)=4(3)
-----------------------
7x-8y=-12
-16x+8y=12
----------------
-9x=0
x=0/-9
x=0
7(0)-8y=-12
0-8y=-12
8y=0-(-12)
8y=0+12
8y=12
y=12/8
simplify
y=3/2
A parallelogram has a base of 12 inches in a height of 7 inches what is the area
Answer:
84 inch
Step-by-step explanation:
A=base*height
A=12*7
A=84 inch
