The perimeter of a rectangular pool is 240 yd. If the length is 30 yd unless the four times the width, find the length and the width.
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Answer:
270 is the answer if you add
Answer:
Step-by-step explanation:
P = 2L + 2W
L = 4w - 30
w = w
P = 2(4w - 30) + 2W
but P = 240
2(4w - 30) + 2w = 240 Remove the brackets.
8w - 60 + 2w = 240 Combine
10w - 60 = 240 Add 60
10w - 60 + 60 = 240+60 Combine
10w = 300 Divide by 10
w = 30
L = 4w - 30
L = 4*30 - 30
L = 120 - 30
L = 90
Related Questions
Help please …………….urgent :)
Answers
Answer:
The speed of the boat in still water is 12 miles per hour, while the speed of the current is 9 miles per hour.
Step-by-step explanation:
We'll use x as the speed of the boat in still water in miles per hour.
We'll use y as the speed of the current in miles per hour.
When the boat is traveling downstream, the speed of the boat is helped by the speed of the current and the net speed is x + y.
When the boat is traveling upstream, the current opposes the movement of the boat, and the net speed is x - y.
Using a table where d = distance in miles, r = rate or speed in miles per hour, and t = time in hours can help figure out how to figure out this problem.
─────────────────
Downstream│210│(x + y)│10
Upstream│210│(x - y)│70
─────────────────
Recall that distance = rate x time or d = rt.
210 = (x + y)10 ➤ Equation from downstream information.
210 = (x - y)70 ➤ Equation from downstream information.
210 = 10x + 10y ➤ Distribute.
210 = 70x - 70y ➤ Distribute.
7 × 210 = 7 × 10x + 7 × 10y ➤ Multiply the 1st equation by 7.
1470 = 70x + 70y ➤ Add the 1st equation to the 2nd.
210 =70x - 70y ➤ Add the 1st equation to the 2nd.
1680 = 140x
─────────────────
1680/140 = 140x/140
x = 12
210 = (12 + y)10 ➤ Substitute x = 12 into one of the original equations to find y.
210 = 120 + 10y
-120 - 120
90 = 10y
90/10 = 10y/10
y = 9
A rectangular piece of gift wrap
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Answer:
Uh... this isnt a question
Step-by-step explanation:
need help due in 2 minutes!!!!
Answers
Step-by-step explanation:
r = 32/40 = 0.8
S10 = 40(1- (0.8)^10)/ (1- 0.8)
= 40(1 - 0.107) / 0.2
= 200(1.107)
= 221
please help I don't understand
Answers
Answer:
5 five dollar and 7 one dollar
Step-by-step explanation:
let the number of one dollar be xthe number of five dollar be y1x+5y=32
x+y=12
using elimination method
+x-x-y+5y-32+12=0
4y-20=0
4y=20
divide both side by 4y=20/4 =5
so, if. y is 5 then x is
5y+x=32
5(5)+x=32
25+x=32
x=32-25
x=7
Can you please help me with #4-#5?I don't know how to find the answer.
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Answer:
Step-by-step explanation:
4:C(X) = 17x - 10, the first question wants you to find how much 5 ticket costs, so replace x with 5 so c(x)= 17(5)-10 which equals 75$
4a: 4a wants you to find how many tickets you can buy for 130$. So first replace the y or c(x) with 130 x, which gives 130=17x-10. Now we find x, first add 10 to both sides to cancel the -10, 140=17x, then divide 17 from both sides which gives 8.235, so we can buy 8 tickets.
4b: It is discreet because it cannot be broken down into decimals or fractions, since you cannot have a halve of a ticket.
4c: c(0) means the y-intercept
4d: the range is 7 to positive infinite
5:
x y
0 -10
1 7
2 24
3 41
4 58
5 75
Answer:
♡ The first answer is correct
♡ Please mark them BRAINIEST
♡ Hope this helps
♡ Have a beautiful day
Step-by-step explanation:
Find the slope and y-intercept for this table.
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Answer:
Slope is -5 and y-intercept is 90.
Step-by-step explanation:
Use the two values that you circles (4, 70) and (6, 60) .
slope (m) = the change in y-value/ (the change in the x-values).
m = (70 - 60)/(4 - 6) = 10/-2 = -5
The y-intercept is the value of "b" in the equation y = mx + b.
Using y = mx + b, substitute the value m and use point of your points (4, 70).
y = mx + b
70 = -5(4) + b Now solve for "b".
70 = -20 + b
+20 = +20
90 = b
steve baked 5 1/2 batches of cookies in one and one half hours. Vondra baked 3 1/3 batches of cookies in 11/12 hour. Which baker made cookies at a greater rate of batches per hour?
Answers
Answer:
Step-by-step explanation:
Steve 11/2 batches / 3/2 hrs = 11/2(2/3) = 11/3 = 3 2/3 = 3 22/33 batches/hr
Vondra 10/3 batches / 11/12 hr = 10/3(12/11) = 120/33 = 3 21/33 batches/hr
Steve had a very slightly faster batch rate by only 1/33 batch/hr
PLEASE HELP!! QUESTION IS IN IMAGE
Answers
Answer:
false and then true
Step-by-step explanation:
Hope this helps :)
Answer:
First one is False, second one is true.
Step-by-step explanation:
For the first one, the left side of the equation would equal -6/3, and the left side would be 3/-6. When simplified it would be: -2 = -1/2, which is incorrect.
For the second one, the left side and the right side are the same because either way you put it, they are still being multiplied, and the order doesn't matter. The end result will be -72 = -72, which is correct.
I hope this helps!! :>
1. y=3x+6 2. y=-2x+4 3. y=1/2x-6 4. y=2/3x 5. y=-4x+1/8
Answers
Answer:
Here u go bro. You have to just replace y and x with zero and then draw the I think structure say say:')
Can Defects A company that makes soda pop cans finds that the
probability of producing a can without a puncture is 0.96, the probability that
a can does not have a smashed edge is 0.93, and the probability that a can
does not have a puncture and does not have a smashed edge is 0.893.
(a) Are the events "selecting a can without a puncture" and "selecting a can
without a smashed edge" mutually exclusive? Explain.
(b) If a quality inspector randomly selects a can, find the probability that the
can does not have a puncture or does not have a smashed edge
Answers
Using probability concepts, it is found that:
a) Since [tex]P(A)P(B) \neq 0[/tex], the events are not mutually exclusive.
b) 0.997 = 99.7% probability that the can does not have a puncture or does not have a smashed edge.
Item a:
Two events, A and B, are mutually exclusive if:
[tex]P(A \cap B) = 0[/tex]
In this problem:
Event A: No puncture, thus, [tex]P(A) = 0.96[/tex].Event B: No smashed edges, thus [tex]P(B) = 0.93[/tex]The problem also states that the probability of neither is [tex]P(A \cap B) = 0.893[/tex].
Since [tex]P(A)P(B) \neq 0[/tex], the events are not mutually exclusive.
Item b:
Using Venn probabilities, the "or" probability is given by:
[tex]P(A \cup B) = P(A) + P(B) - P(A \cap B)[/tex]
With the given values:
[tex]P(A \cup B) = 0.96 + 0.93 - 0.893 = 0.997[/tex]
0.997 = 99.7% probability that the can does not have a puncture or does not have a smashed edge.
A similar problem is given at https://brainly.com/question/23855473
Help plssssss I love yall sooooo much just please help btw this is Math just try your best love yallllllll!!!!!!!!
Answers
On a field trip, the ration of students who brought a water bottle to those who didn’t was 7 to 4. If 60 students did not bring water bottle, determine the total number of students on the field trip.
Answers
Answer:
165 students
Step-by-step explanation:
7/4 = x/60
(60*7)/4 = 105
105 + 60 = 165
The surface area of a spherical ball is 2464cm².Calculate the diameter of the ball. Take /pi to be 22/7
Answers
Answer:
Step-by-step explanation:
The surface area of a spherical ball = 2464cm²
[tex]\dfrac{4}{3}\pi r^{2}=2464\\\\\dfrac{4}{3}*\dfrac{22}{7}*r^{2}=2464\\\\r^{2}=2464*\dfrac{3}{4}*\dfrac{7}{22}\\\\= 28* 3 * 7\\\\ = 588\\r = \sqrt{588}\\\\r= 24.25 \ cm\\\\Diameter = 2*r = 2*24.25 = 48.5 \ cm[/tex]
9 is 50% of what number plz help
Answers
Answer:
9 is 50% of number 18
'cuz u should do 18/2=9
Answer:
9 / 50% = Y / 100%
Solve for Y
50Y = 9 x 100
50Y = 900
Y = 900 /100 = 18
note: when i put / it means fraction
so the answer to your question is 18 :D
What is x in this problem ?
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Answer:
is it just -12
because -12 +122 = 110
Give on f(x) = 2x + 9 if f(x)= 15 find x
Answers
Answer:
x = 3
Step-by-step explanation:
Set both equations equal to each other and solve.
2x + 9 = 15
2x = 6
x = 3
heyy what is 1756542230 divided by 5
first to answer gets braliest
no links please
Answers
Answer:
351308446................
Answer:
351308446
Step-by-step explanation:
The length of a rectangular garden is 8 feet longer than its width. If the garden's perimeter is 184 feet,
what is the area of the garden in square feet?
Answers
Answer:
23
Step-by-step explanation:
divide 184 by 8 to find the answer
6t - 20 - 32u when t = 6 and u = 1/4
Answers
Answer: 8
Step-by-step explanation:
Substitute the variables for the number they represent
6(6) - 20 - 32(1/4)
Multiply
6*6 = 36
32 x .25 = 8
36-20-8
16-8
8
Answer:
here given equation is 6t - 20 - 32u
value of t=6
value of u=1/4
then...
putting the value in the given equation.. we get,
=6*6-20-32*(1/4)
=36-20-8
=8
Y+12=y-20
Solve for y
Answers
Answer:
No solution
Step-by-step explanation:
y + 12 = y - 20
=> y = y - 20 - 12
=> y - y = -32
=> No solution
You go to the deli counter at your grocery store and order 3/4 of a pound of sliced cheese that costs $7.99 per pound. The employee slices exactly 3/4 of a pound for you. What is the price of your cheese? _
Answers
5 bucks i think im not sure dough'
Answer:
1/2 = 0.5 and 3/4 = 0.75
Use a proportion: 0.5/2.60 = 0.75/x
Cross multiply: 0.5x = 0.75*2.60
So x = 0.75*2.60/0.5 = 3.90
HELPPP PLZZ GIVING 40 BRAINLEIST AWAYYY
Answers
Answer:
Proportional relationship:
y = kxUse a pair of points (0.14, 0.7) to find the value of k:
0.7 = 0.14kk = 0.7/0.14k = 5The function is:
y = 5xFill in the table:
x = 3.1 ⇒ y = 5*3.1 = 15.5x = 2.5 ⇒ y = 5*2.5 = 12.5x = 1.2 ⇒ y = 5*1.2 = 6x = 0.9 ⇒ y = 5*0.9 = 4.5y = 0.3 ⇒ x = 0.3/5 = 0.06y = 0.1 ⇒ x = 0.1/5 = 0.02Write the slope - intercept form of the equation of each line through thr points(2,5) and (3,4
Answers
Answer:
y=-x +4
Step-by-step explanation:
y-2= -1(x-2)
y-2=-x +2
y= -x +4
Answer:
Slope: m=-1
y-intercept: (0,7)
slope intercept form: y=-x+7
Which values are solutions to the inequality -3x - 4< 2? Check all of the boxes that apply.
-4
-2
0
3
Answers
Answer:
-3x-4<2
Step-by-step explanation:
it would end up being 3
F(x) =?. Vertex is (2,-4) the other given point is (1,-2)
Answers
We could substitute these values into the vertex form of the quadratic function,
f(x) = a(x - h)^2 + k
where:
(h,k) is the vertex
The axis of symmetry is the vertical line x = 2
The value of “a” determines whether the graph opens up or down, and makes the parent function wider or narrower.
The value of “h” determines how far left or right the parent function is translated.
The value of “k” determines how far up or down the parent function is translated.
Now that we’ve established these definitions, we can substitute the given values into the vertex form:
f(x) = a(x - 2)^2 - 4
In order to determine the value of “a”, we must substitute the values of the other given point, (1, -2) into the equation:
f(x) = a(x - 2)^2 - 4
-2 = a(1 - 2)^2 - 4
-2 = a(-1)^2 - 4
-2 = a - 4
Add 4 to both sides to solve for “a”
-2 + 4 = a - 4 + 4
2 = a
Now that we have the value of a = 2, we can establish our quadratic function in vertex form:
f(x) = 2(x - 2)^2 - 4
I’m also including a screenshot of the graph of the function we came up with.
Please mark my answers as the Brainliest if you find my explanations helpful :)
one of the four gas stations located at a major intersection of two major roads is a Texaco station. Suppose the next six cars that stop at any of these four station make their selection randomly and independently. Is x a discrete or a continuous random variable?. Explain what are the possible values that x can assume?
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Answer:
A Tourist Information Center is between a Bus Station and a Train Station. When mapped on a grid, the Tourist Information Center is
located at (15,2) and the Bus Station is located at (5,-10).
The Train Station is located at point?Texaco station. Suppose the next six cars that stop at any of these four station make their selection randomly and independently. Is x a discrete or a continuous random variable?. Explain what are the poss
The polygons
are similar. Find x.
i need #1 and 2 lol please
Answers
9514 1404 393
Answer:
x = 8x = 35Step-by-step explanation:
Corresponding sides have the same ratio in similar figures.
1. x/20 = 6/15
x = 20(6/15) = 8 . . . . multiply by 20
__
2. x/20 = 14/8
x = 20(14/8) = 35 . . . . multiply by 20
Write the numbers in order from least to greatest.
6.03 , 6 2/5, 6.2, 6 1/3
Answers
6.03 -> 6.2 -> 6 1/3 -> 6 2/5
good luck !! :)
hi guys can someone help me whit this question is for tommorow for my is so difficult . The exercise talks about math sets. It is: give three examples of sets A and B such that AU(union)B=B
Answers
Answer:
(i) A = {1}, B = {1, 2}, (ii) A = empty set, B = {1, 2, 3}, (iii) A = {a, b, c}, B = {a, b, c}, (iv) A = {7, 8, 9, 10}, B = {7, 8, 9, 10, 11, 12}
Step-by-step explanation:
The idea: A U B = the set of all elements (from a Universal set, like the set of all integers) that are in at least one of the sets A or B. So, for the equation A U B = B to be true, the set A must be a subset of the set B, because otherwise A U B would contain at least one element not in B, making the equation A U B = B false (set B would be a proper subset of A U B). So, if A = {1, 2, 3, 4} and B = {1, 2, 3}, then A U B = {1, 2, 3, 4}, and A U B = B would be false. However, if A = {1, 2, 3} and B = {1, 2, 3, 4}, then A U B = B would be true.
point Q is at (2,4) what happens after a 270 degree rotation about the origin
Answers
Answer:
(4, 2) the formula for 270 rotation counterclockwise is (y,-x)
Step-by-step explanation: