Mr. Sampson fills the family pool with water for
the summer. After two hours, the water has
reached a depth of 2.5 feet. After three hours,
the water level has risen to 3 3/4feet. If the
relationship between time and water depth is
proportional, what is the constant of
proportionality?
Answer
A.1
B.1 1/4
C.1 1/2
D.2
Answer:
A, because the difference between 2.5 and 3 3/4 is 1. Thanks!
A projectile is thrown upward so that it's distance above the ground after t seconds is h=-16t^2+480t. After how many seconds does it reach its maximum height?
Answer:
t = 15 s
Step-by-step explanation:
A projectile is thrown upward so that it's distance above the ground after t seconds is as follows :
[tex]h=-16t^2+480t[/tex] ...(1)
We need to find after how many seconds does it reach its maximum height. For maximum height, put [tex]\dfrac{dh}{dt}=0[/tex]
[tex]\dfrac{d(-16t^2+480t)}{dt}=0\\\\-32t+480=0\\\\t=\dfrac{480}{32}\\\\t=15\ s[/tex]
So, it will reach its maximum height in 15 seconds.
There are 4 sharks and 5 dolphins. Write the ratio of dolphins to animals.
Answer:
5:9
Step-by-step explanation:
Number of sharks = 4
Number of dolphins = 5
Number of animals = number of sharks + number of dolphins
Number of animals = 4 + 5 = 9
Therefore, the ratio of dolphins to animals = 5:9
here is a list of ingredients for making 12 rock cakes nihay wants to make 42 cakes does she have enough sugar to make 42rock cakes u must show your working
Step-by-step explanation:
So we know that for 12 rock cakes we need 225g flour and 75g sugar to get 42 rock cakes we need to multiply the number of ingredients by 3.5 (42/12 =3.5)
This gets us 787.5 g flour and 262.5 g sugar.
Show work:
[tex]42 \div 12 = 3.5[/tex]
[tex]225 \times 3.5 = 787.5[/tex]
[tex]75 \times 3.5 = 262.5 [/tex]
[tex]787.5 < 800[/tex]
[tex]262.5 < 300[/tex]
Nishat has enough flour and sugar to make 42 rock cakes.
Using a Table to Multiply Multivariable Polynomials What is the product of 6x – y and 2x – y + 2? 8x2 – 4xy + 12x + y2 – 2y 12x2 – 8xy + 12x + y2 – 2y 8x2 + 4xy + 4x + y2 – 2y 12x2 + 8xy + 4x + y2 + 2y
Answer: B.
[tex]12x^{2}[/tex] [tex]-8xy + 12x + y^2 - 2y[/tex]
Step-by-step explanation:
i just took the assignment
Glven: -7x < -21. Choose the solution set.
Answer:
x > 3
Step-by-step explanation:
-7x < -21
Divide each side by -7, remembering to flip the inequality
-7x/-7 > -21/-7
x > 3
Answer:
x > 3
Step-by-step explanation:
Get the variable (x) by itself. Divide both sides by -7. Since a negative/ negative = positive, the 3 is positive. When you multiply or divide by a negative, the inequality sign flips. I hope this helped.
A family ordered two pizzas for dinner. They ate 1/2 of the first pizza and
1/4 of the second pizza. How much more of the first pizza did they eat?
A)1/2
B)1/4
C)1/8
D)3/4
Answer:
they ate 3/4 part of pizza
Step-by-step explanation:
=1/2+1/4
=1×2/2×2 + 1/4
=2/4+1/4
=3/4
Answer:
B) 1/4 because if the pizzas have 8 slices then 1/4=2 slices and 1/2=4 slices 4-2=2 and 2 slices equal 1/4 of the pizza.
Step-by-step explanation:
Hope it helps!
Have a good day/night :)
Brainliest pls?
Guys plz help me answer this!!!!
Answer:
a= -4
Step-by-step explanation:
subtract 4a from both sides
add 15 to both sides
divide both sides by -3
(order of operations)
Y=-6x+10. Y=-6x+3
Solve the system of equations
Given:
The system of equations is
[tex]y=-6x+10[/tex]
[tex]y=-6x+3[/tex]
To find:
The solution of given system of equations.
Solution:
Slope intercept form of a line is
[tex]y=mx+b[/tex]
where, m is slope and b is y-intercept.
For [tex]y=-6x+10[/tex], slope is -6 and y-intercept is 10.
For [tex]y=-6x+3[/tex], slope is -6 and y-intercept is 3.
Slopes of both lines are but the y-intercepts are difference. So, the two lines are parallel.
Therefore, the given system of equation has no solution.
12 1/2 of 32=
please answer
Answer:
400
Step-by-step explanation:
Answer:
400
Step-by-step explanation:
Four pounds of bananas cost $2.60
What the cost per pound?
Answer:
$0.65 per pound
Step-by-step explanation:
Divide the total cost by the number of pounds to find price per pound.
$2.60 ÷ 4 = $0.65 per pound
If 22x = 23, what is the value of x?
Two-thirds
Three-halves
2
3
Answer:
B, or [tex]\frac{3}{2}[/tex]
Step-by-step explanation:
Got 100% on my quiz. Other guy is incorrect.
(7x7) (10^-6 x 10^-6) expressed in scientific notation WITH EXPLANATION
Answer:
Step-by-step explanation:
In exponent multiplication, if base is same, then add the powers
[tex](7 * 7) * (10^{-6}*10^{-6})= 49 * {10^{(-6) + (-6)}\\\\=( 4.9*10^{1} )* 10^{-12}\\\\= 4.9 * 10^{1 + (-12)}\\\\= 4.9 * 10^{-11}[/tex]
Find the area of the triangle.
Answer:
1325 yd²Step-by-step explanation:
Area formula
A = 1/2bhGiven
b = 53 yd, h = 50 ydThen the area is:
A = 1/2(53)(50) = 1325 yd²I need help this is my last question (math class)
Answer:
Step-by-step explanation:
5.00 for 2 loaves is $2.50 a loaf.
She wants 5 loaves for $12.50
5*2.50= $12.50 so she is correct.
A rectangular lot is 20 yards longer than it is wide and its area is 2400 square yards. Find the dimensions of the lot
Answer:
120
Step-by-step explanation:
Divide 2400 by 20 to get your answer! It may be wrong
Answer:
W = 40
L = 60
Step-by-step explanation:
L = 20 + W
L*W = 2400
(20 + W)*W = 2400
W^2 + 20*W - 2400 = 0
(W + 60)*(W - 40) = 0
W = 40 (yards)
L = 20 + W
= 20 + 40 = 60
W = 40
I need help on this... i have to find the m
Answer:
100°
Step-by-step explanation:
(20x)° = (7x + 5)° + 60°
20x - 7x = 65
13x = 65
x = 5
m∠BTU = (20 × 5)° = 100°
Which number is greater 35, 6.1
1
o
2
3
4
5
6
7
8
9
10
Which of the following could be the number shown on the number line?
A. 172
B. V 79
C.
82
D. 63
Answer:
A
Step-by-step explanation:
8.5 x 8.5= 72.25
so basically it's the closest answer
What are the four types of slopes? Write an equation for each of the four types of slopes.(in slope intercept form) 9th grade geometry HELP
Answer: positive,negative,zero,undefined,
Step-by-step explanation:
Equations examples
Positive: y=7x-4
Negative:-5x+3
Zero:y=0x-3
Undefined : x=3
Hope the image I attached helps you identify the slope easier :)
The four types of slopes are negative, positive, zero, and undefined.
What is slope of a line?The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.
Slopes come in 4 different types: negative, positive, zero, and undefined.
Examples of equations
Positive: y=7x-4
Negative: -5x+3
Zero : y=0x-3
Undefined : x=3
Therefore, the four types of slopes are negative, positive, zero, and undefined.
To learn more about the slope of a line visit:
https://brainly.com/question/14511992.
#SPJ2
Will give Brainliest and 50 points question above
Answer:
12.something units squared
Step-by-step explanation:
Answer:
12.something units squared
Step-by-step explanation:
2+8+9+4-3-4-6+9+5+3+8
[tex]2+8+9+4-3-4-6+9+5+3+8 \\ \\ = > 10 + 9+4-3-4-6+9+5+3+8 \\ \\ = > 19+4-3-4-6+9+5+3+8 \\ \\ = > 23-3-4-6+9+5+3+8 \\ \\ = > 20-4-6+9+5+3+8 \\ \\ = > 16-6+9+5+3+8 \\ \\ = > 10+9+5+3+8 \\ \\ = > 19+5+3+8 \\ \\ = > 24 + 3 + 8 \\ \\ = > 27 + 8 \\ \\ = > \green{\boxed{ 35}}[/tex]
Answer:
35
Step-by-step explanation:
2+8+9+4-3-4-6+9+5+3+8
10+13-3-4-6+9+16
23-13+25
10+25
35
Write an equation for a line that passes through (0,0) and is parallel to a line that passes through (-5, 3) and (2, 1)
Answer:
sorry i needed the points for school
Step-by-step explanation:
Can somebody plz answer all of them correctly! (Only if u done this before) THANKS!
will mark brainliest
Answer: 31: -12, -2
32: -6, 3
33: 4, -4
34: 1, 8
35: 2, -6
36: 2, -3
37: -5, -6
38: -8, 9
39: 7, 0
Step-by-step explanation:
Hope this helps!
Answer:
31. -12, -2
32. 6, -3
33. -4, 4
34. 8, 1
35. -6, 2
36. -3, 2
37. -6, -5
38. 8, -9
39. 7, 0
Step-by-step explanation:
31. -12 + -2 = ‐14 and -12 x -2 = 24
32. 6 + -3 = 3 and 6 x -3 = -18
33. -4 + 4 = 0 and -4 × 4 = -16
34. 8 + 1 = 9 and 8 x 1 =8
35. -6 + 2 = -4 and -6 x 2 = -12
36. -3 + 2 = -1 and -3 x 2 = -6
37. -6 + -5 = -11 and -6 x -5 = 30
38. 8 + -9 = -1 and 8 x -9 = -72
39. 7 + 0 = 7 and 7 x 0 = 0
Kim eats 1/3 of an apple in 1/6 minutes.How many minutes will it take for her to eat the whole apple? Please help
Answer:
1/2 a minute.
Step-by-step explanation:
You multiply 1/6 by 3 and get 3/6, then simplify and end with 1/2.
Answer:
It will take Kim 3/6 or 1/2 of a minute to eat the apple
Step-by-step explanation:
3.
How many solutions would this system of equations have?
y = 2x + 1
y =2(x+3)
a) One
b) No solutions
c) Two solution
d) Infinitely Many solutions.
Answer:
b) No solutions
Step-by-step explanation:
y=2x+1
y= 2(x+3)
Substitute the y in y=2x+1 with 2(x+3)
2(x+3)=2x+1
Then distribute the 2.
2x+6=2x+1
Subtract 2x from both sides to isolate the variable.
6=1
this statement is false, meaning the system of equations has no solutions.
What is the 100th term of the sequence with a1 = 222 and d = -5
Answer:
-273
Step-by-step explanation:
222- (99*5)
222-495
-273
Answer:
-273
(next time if their is options maybe also try and put them, it would help a lot)
What are the coordinates of the point? (−6, −4) (−4, 6) (6, −4) (6, 4) A coordinate grid with a dot placed in the fourth quadrant. The dot is to the left of negative 4 on the y axis and below positive 6 on the x axis
Answer:
(6, -4)
Step-by-step explanation:
you do the x axis first and then the y axis.
The coordinates of the point of the grid with the dot placed in the fourth quadrant is; (-4, 6)
How to find the Coordinates of a Graph?We are told that there is a coordinate grid with a dot placed in the fourth quadrant.
Now, the dot is to the left of negative 4 on the y-axis and below positive 6 on the x-axis. This means that the coordinate of the point will be -4, 6.
Thus, we can conclude that the coordinate of the given point of the dot is (-4, 6).
Read more about Graph Coordinates at; https://brainly.com/question/14323743
Help please! Answer only if you know the correct answer, thanks.
Answer:
AB and AC
Step-by-step explanation:
I think I'm not 100 but....
what is the cosine of angle D
Answer:
[tex] \frac{28}{45} [/tex]
Step-by-step explanation:
Please see the attached picture for the full solution.