Answer:
y = 22 - 2x
Step-by-step explanation:
Given the following :
Amount of water in salt water fish tank = 22 inches
Evaporation occurs steadily at the rate ; 2 inches per week
The depth y of water in the aquarium x weeks after filling :
The depth of water reduces as evaporation occurs ; and as such reduces by 2 inches per week
Hence,
After x weeks, the depth 'y' of water in the aquarium will be :
y = Initial position of water - 2(number of weeks)
y = 22 - 2x
y = new depth
x = number of weeks
What is the intersection of the two sets below?
{1, 5, 6, 9}, {2, 5, 8}
Answer:
5
Step-by-step explanation:
if both of them have 5 without a picture they most likely are intercepted at the number 5
BRAINLIEST TO THE FIRST CORECT ANSWER!!!Leonardo wrote an equation that has an infinite number of solutions. One of the terms in Leonardo’s equation is missing, as shown below.
Negative (x minus 1) + 5 = 2 (x + 3) minus box
Which could be the missing term that Leonardo put into the box?
x
3x
1
5
Answer:
The missing term is 3x
Step-by-step explanation:
Hope that helped!!
Answer:
b
Step-by-step explanation:
i did the problem
A choral conductor has 1542 singers in her choir, some of them are professional singers. The conductor wants to estimate what percentage of singers are professional, but can't ask all 1542, so she instead asks 650 singers in front and finds 19 who are professionals.
Answer:
The value is [tex]\r p = 2.9\%[/tex]
Step-by-step explanation:
From the question we are told that
The number of singers is [tex]N = 1542[/tex]
The sample size is [tex]n = 650[/tex]
The number the number of singers who are professional is k = 19
The proportion of professional singers is mathematically represented as
[tex]p = \frac{k}{n}[/tex]
=> [tex]p = \frac{19}{650}[/tex]
=> [tex]p = 0.029 [/tex]
The percentage estimate of singers who are professional is
[tex]\r p = 100 * 0.029[/tex]
[tex]\r p = 2.9\%[/tex]
- 5x - 72 = -12x + 75
Answer:
x = 21
Step-by-step explanation:
Step 1: Write out equation
-5x - 72 = -12x + 75
Step 2: Add 5x to both sides
-72 = -7x + 75
Step 3: Subtract 75 on both sides
-147 = -7x
Step 4: Divide both sides by -7
21 = x
Step 5: Rewrite
x = 21
What is the remainder when 7842 is divided by 176
Answer: 5 or 55
Step-by-step explanation:
The remainder is 98 when 7842 is divided by 176 after using the arithmetic operation.
What is an arithmetic operation?It is defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has a basic four operators that is +, -, ×, and ÷.
We have two numbers:
7842 and 176
7842 is divided by 176
Mathematically,
= 7842 ÷ 176
We can write the above number expression in the form of a fraction:
= 7842/176
Fraction number consists of two parts, one is the top of the fraction number which is called the numerator and the second is the bottom of the fraction number which is called the denominator.
The remainder will be:
Quotient = 44
Remainder = 98
Thus, the remainder is 98 when 7842 is divided by 176 after using the arithmetic operation.
Learn more about the arithmetic operation here:
brainly.com/question/20595275
#SPJ2
0.4879 rounded to the nearest 10th
Answer:
0.5
Step-by-step explanation:
8 is bigger than 5 so 4 rounds up
3. Tad owes John $23 and borrows
$12 more. How much does Tad
owe John now?
Answer:
35 dollars
Step-by-step explanation:
23 + 12 = 35
hopefully this helps you :)
pls give me brainlest ;)
If you needed to buy at least 5 water bottles AND at least 8 water bottles, how many water bottles would you need to by?
Answer: You should get 15 water bottles
Step-by-step explanation: You need at least 8 water bottles and at least 5 water bottles so you should get 15 because 9+6.
The number of water bottles you would need to buy is at least 13 water bottles
At least means ≥ (greater than or equal to)let
b = water bottles
Statement 1:
at least 5 water bottles
b ≥ 5
statement 2:
at least 8 water bottles
b ≥ 8
The total number of water bottles you need to buy is at least 5 + 8b ≥ 13
Therefore, the number of water bottles you would need to buy is at least 13 water bottles
Read more:
https://brainly.com/question/11067755
A brick layer is able to set 2.5 breaks in one minute how many bricks can you set an eight hours
Answer:
In 8 hours he will set 1200 bricksStep-by-step explanation:
In this problem, we are expected to estimate the number of bricks he can set in 8 hours.
let us convert hours to minutes we have
60 min make 1 hour
x min make 8 hours
cross multiply
x= 60*8
x= 480 min
We are assuming the same rate with which he sets 2.5 brick is the same as the rate with which he will set bricks for the 8 hours windows
so if the bricklayer sets
2.5 bricks in 1min
y bricks in 480 min
Cross multiply we have
y=2.5*480
y= 1200 bricks
hence in 8 hours, he will set 1200 bricks
3a+2b+cx=2(4d-5e) how do i find x?
Answer:
[tex]x = \frac{8d-10e-3a-2b}{c}[/tex]
Step-by-step explanation:
In order to find x, our goal is to isolate it on one side of the equation.
To do this, let's first apply the distributive property on the right side of the equation.
[tex]3a+2b+cx = 8d - 10e[/tex]
Now we can subtract [tex]3a[/tex] and [tex]2b[/tex] from both sides:
[tex]cx = 8d - 10e - 3a - 2b[/tex]
And now we can divide both sides by [tex]c[/tex] so that x is alone on the left side.
[tex]x = \frac{8d-10e-3a-2b}{c}[/tex]
Hope this helped!
Simplify the expression: –5(–6 + 2c)
Steps to solve:
-5(-6 + 2c)
~Distribute
30 - 10c
Best of Luck!
Steve is training for a marathon. He has run the following distances so far this week: 5 miles, 8.5 miles, 3.5 miles and 9 miles. He is going to run one more day this week. If Steve would like to average 7 miles for his training runs this week, how many miles should he run during his last run of the week?
The length of a rectangle is nine more than tripled the width if the perimeter is 146 inches find the dimensions
Simplify.
y2.9y+ 20
y2 +10y + 24
Answer:
12y+24
Step-by-step explanation:
You can add 2y and 10y due to the same variable, y.
Atlanta received 3 inches of snow in a 12-hour period. How many inches were falling per hour?
What is 0.421 x 5.6 ?
Answer:
=2.3576x
Step-by-step explanation:
0.421x(5.6)
=2.3576x
Solve using elimination method
11x + 9y = -5
7x + 5y = -1
Answer: (2,-3)
Step-by-step explanation:
To solve by elimination method, we need to choose which variable to eliminate. Let's eliminate y. We need to make sure that the y coefficients in both equations are equal. To do that, you multiply the first equation by 5 and the second by 9.
(11x + 9y = -5)5 [multiply entire equation by 5]
(7x + 5y = -1)9 [multiply entire equation by 9]
--------------------------------------------------------------------------------------------------------
55x+45y=-25
63x+45y=-9
Now that the y are both the same, we can eliminate y by subtracting both equations and solve.
-8x=-16 [divide both sides by -8]
x=2
Now that we have x=2, we can plug that in to any equation to find y.
7(2)+5y=-1 [multiply]
14+5y=-1 [subtract both sides by 14]
5y=-15 [divide both sides by 5]
y=-3
With the y-value, we know that the answer is (2,-3).
Mr Cole has 30 students in his class. He has twice as many girls than boys. What is the ratio of girla to boys?
Answer:
12:1/2(3)
Step-by-step explanation: no problem homie
What is 4 divided by 37.4??
Answer:
.101265823
Step-by-step explanation:
Points Pand Q lie in plane A. How many lines contain P
and Q?
2. Lines PQ and QP
3. The 2 lines PQ and QP plus another line that does
not lie in plane A.
1. Line PQ
. We can't name them all!
Answer:
The correct answer is :
1. Line PQ (One line PQ).
Step-by-step explanation:
The first step to solve this question is to draw the plane A with the points P and Q lying on it.
We know that given two different points there is only one line that contains this two different points.
Let's analyze each option.
''2. Lines PQ and QP''
This option is wrong because there aren't two different lines. In fact it is only one line that can be named line PQ or line QP.
''3. The 2 lines PQ and QP plus another line that does not lie in plane A.''
This option is assuming that exist three lines that contain P and Q. This option is also wrong.
''1. Line PQ''
This option is correct. It will be clarify with the drawing I will attach.
''We can't name them all!''
This option is assuming that exist infinite lines that contain P and Q. This option is wrong.
In the drawing I call the line that contains P and Q as line L.
Given that P and Q lie in plane A necessarily the line L must lie on the plane A.
Only one line contains points P and Q
The given parameters are:
Plane APoints P and QThere are at least two points in a line
This means that, a line can contain points P and Q, and any other points
Hence, only one line contains points P and Q
Read more about plane and points at:
https://brainly.com/question/17268701
0.5x = -0.87x + 0.37x
Show me the work
Answer:
x = 0
Step-by-step explanation:
0.5x = -0.87x + 0.37x-0.87x + 0.37x - 0.5x = 0-x = 0x=0A student throws a heavy ball downward off the top of a building with a speed of 18m/s. The ball reaches a speed of 41m/s just before striking the ground. Neglect drag.
Complete question:
A student throws a heavy ball downward off the top of a building with a speed of 18m/s. The ball reaches a speed of 41m/s just before striking the ground. Neglect drag, find the height of the building.
Answer:
The height of the building is 69.235 m
Step-by-step explanation:
Given;
initial velocity of the ball, u = 18 m/s
final velocity of the ball, v = 41 m/s
The height of the building is equal to distance traveled by the ball downward.
Apply the following kinematic equation;
v² = u² + 2gh
where;
g is acceleration due to gravity
h is height of the building
41² = 18² + 2(9.8)h
1681 = 324 + 19.6h
19.6h = 1681 - 324
19.6h = 1357
h = 1357 / 19.6
h = 69.235 m
Therefore, the height of the building is 69.235 m
find the distance between (-8, -2)
and 6, -1)
Answer:
-8,-2= 6
6,-1=7
Step-by-step explanation:
get a number line and use that to it and look up how to use a number line with negative numbers it’s not hard once you see how it’s done
Hey there! I'm happy to help!
Here is how to find the distance between two points.
Find the difference between the x values.
-8-6=-14
We square this.
14²=196
We find the difference between the y values.
-2-(-1)=-2+1=-1
We square it.
-1²=1
We add up the two numbers we got.
196+1=197
And we square root it.
√197≈14
Have a wonderful day! :D
What is the value of x?
Answer: D- 30
Step-by-step explanation:
Can someone solve this
When evaluated for x=-4 the expression x2-8/x+10 is equal to
Answer:
-16/6
Step-by-step explanation:
2x-8÷x+10
2(-4)-8÷-4+10
-16÷6
can you solve this pls 5(x – 4) + 3x – 9x = 6 – (2x + 5) + 8x
show step by step pls
Answer: x= -3
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
5(x−4)+3x−9x=6−(2x+5)+8x
(5)(x)+(5)(−4)+3x+−9x=6+−2x+−5+8x(Distribute)
5x+−20+3x+−9x=6+−2x+−5+8x
(5x+3x+−9x)+(−20)=(−2x+8x)+(6+−5)(Combine Like Terms)
−x+−20=6x+1
−x−20=6x+1
Step 2: Subtract 6x from both sides.
−x−20−6x=6x+1−6x
−7x−20=1
Step 3: Add 20 to both sides.
−7x−20+20=1+20
−7x=21
Step 4: Divide both sides by -7.
−7x
−7
=
21
−7
x=−3
The expression 10,000 – 1,000t can be used to calculate the tax value in dollars of a farm tractor that is t years old. How old will the tractor be when its tax value reaches zero?
(a) 12 yr old, (b) 11 yr old, (c) 10 yr old, (d) 13 yr old
Answer:
C. 10 year old
Step-by-step explanation:
Not needed
Answer:
10 years
Step-by-step explanation:
10000-1000t=0
10000=1000t
t=10yeard
Evaluate the function Find f(x)= 3x^2-x+2 a. x=3 b. x=-5 c. f(2) d. f(m) e. f(x+2)
Answer:
see explanation
Step-by-step explanation:
Given
f(x) = 3x² - x + 2
To evaluate given values of x, substitute the values of x into f(x)
(a)
f(3) = 3(3)² - 3 + 2 = 3(9) - 1 = 27 - 1 = 26
(b)
f(- 5) = 3(- 5)² - (- 5) + 2 = 3(25) + 5 + 2 = 75 + 5 + 2 = 82
(c)
f(2) = 3(2)² - 2 + 2 = 3(4) = 12
(d)
f(m) = 3m² - m + 2
(d)
f(x + 2) = 3(x + 2)² - (x + 2) + 2 ← expand (x + 2)² using FOIL
= 3(x² + 4x + 4) - x - 2 + 2
= 3x² + 12x + 12 - x ← collect like terms
= 3x² + 11x + 12
-9+8 *
8+(-1) *
-6+(-2) *
1. -1
2. 7
3.-8
i hope these are the answers
Answer:
-1,7, - 8
Step-by-step explanation:
-9 +8 =-1
8 +(-1)=7
-6 +(-2)=-8
