Answer:
A
Step-by-step explanation:
5 (-5 + n) = -3 - 6n
-25 + 5n = -3 - 6n
-25 + 11n = -3
11n = 22
n = 2
A 50 litre solution of acid and water contains 10 litres of acid. How much water must be added to make the solution 8 % acidic. Will mark brainest to whoever answers.
Answer:
Your welcome!Step-by-step explanation:
Acid present in the solution = 10 L
Required volume concentration of acid = 8/100
Let x amount of water be added to achieve the required %.
In the new solution, proportion of acid= 10/(50+x)
Therefore,
10/(50+x) = 8/100
x=75
Ans: 75 L of water must be added to the solution
What number is being factored in this factor tree?
A.72
B.180
C.216
D.324
Answer:
not sure if it's ryt but I think it's A
You are descending from the top of a 32-foot tall rock climbing wall at an average rate of -2.3 feet per minute. How many feet off the floor are you in 5 minutes? How many feet off the floor are you in 10 minutes? Approximately when will you reach the ground?
Answer:
You are 11.5 feet off the floor are you in 5 minutes
You are 23 feet off the floor are you in 10 minutes
it will take 13.91 minutes to reach the ground
Step-by-step explanation:
If you are top , height will keep decreasing as you move downward.
Given
top height 32 feet
Descending speed = -2.3 feet /minute
Here negative sign implies that height is decreasing.
concept used
distance = speed * time
How many feet off the floor are you in 5 minutes?
time = 5 minutes
distance descended = -2.3 feet /minute*5 minutes = - 11.5 feet
Hence ,
I would have moved 11.5 feet from the top.
Distance from ground will be = Top height - distance descended
Distance from ground will be = 32 - 11.5 = 20.5 feet
____________________________________________
How many feet off the floor are you in 10 minutes
distance descended = -2.3 feet /minute*10 minutes = - 23 feet
Hence ,
I would have moved 23 feet from the top.
Distance from ground will be = Top height - distance descended
Distance from ground will be = 32 - 23= 9 feet
______________________________________________
When you reach the ground distance descended will be 32 feet.
Since its a descend distance off the floor has to be taken as negative value
Thus, distance descend in this case will be -32 feet
-32 feet= -2.3 feet /minute*Time
Time = -32/-2.3 = 13. 91 minutes.
Thus, it will take 13.91 minutes to reach the ground.
Suppose a social networking site has roughly 1,000,000 users, and as each
member signs up for an account, he or she is assigned a number. Which of these would result in the largest sample size using systematic sampling?
A. Surveying every 25,000th number
B. Surveying every 25th number
C. Surveying every 250th number
D. Surveying every 2,500th number.
The option that results in the largest sample size using systematic sampling is; Surveying every 25,000th number
How to find the Sample Size?
If the numbers of people are assigned in order of 1 to 1,000,000 then the smallest sample would be obtained by conducting surveys every 25 000th numbers.
The calculation of the sample size would be made by dividing 1, 000,000 by 25000.
1,000,000/25000 = 40
Therefore, the smallest sample selected would be 40 people.
If the surveys were made every 25th numbers, then the sample size would be:
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I need help and if you can’t see the letters zoom in
Answer:
3) 45°
4) 135°
5) <WAX and <XAZ
6) <WAX and <WAU
7) <WAX and <YAU
8) <WAX and <XAZ
Step-by-step explanation:
3) 45°
4) 135°
5) <WAX and <XAZ
6) <WAX and <WAU
7) <WAX and <YAU
8) <WAX and <XAZ
please answer this I need it asap
Answer: i believe the answer would be the 3rd option
Step-by-step explanation:
Mrs. Brown bought 42 juice boxes. One-sixth of the juice boxes are cherry. How many cherry juice boxes did Mrs. Brown buy?
Answer:
the answer 1s 7
Step-by-step explanation:
1 sixth of 42
1/6 × 42
6
What are the 2-dimensional components of a cylinder
Answer: 2 circles and a rectangle
Step-by-step explanation:
a trapezium with equal non parallel sides is called
Answer:
It is called an isosceles trapezoid/ trapezium
Step-by-step explanation:
Lear
)) Subtract.
(9c^2+ 9c + 3) - (6c^2+ 7c)
.
Answer:
3c^2+2c+3
Step-by-step explanation:
[tex]\left(9c^2+9c+3\right)-\left(6c^2+7c\right)\\\\\mathrm{Remove\:parentheses}:\quad \left(a\right)=a\\=9c^2+9c+3-\left(6c^2+7c\right)\\\\-\left(6c^2+7c\right):\quad -6c^2-7c\\=9c^2+9c+3-6c^2-7c\\\\\mathrm{Simplify}\:9c^2+9c+3-6c^2-7c:\\\quad 3c^2+2c+3[/tex]
Answer:
Step-by-step explanation:
9c^2 + 9c + 3 - 6c^2 - 7c
3c^2 + 2c + 3
Admission price to Universal Studios park is Php 2600 per person. The average patron attending spends about Php 1500 on food, drinks, games, and souvenirs. Find the function notation that accurately describes this situation.
Answer:
f(x)=2600x+1500 at least I think because it's 2600 per person
Determine the input value for which the statement f(x) = g(x) is true.
Answer:
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Step-by-step explanation:
Which expression gives the distance between the points (3, -8) and (3, -19)? *
1 point
Captionless Image
|3 - 3|
|-19 - (-8)|
|3 + (-19)|
|3 - (-8)|
| 3 + (-19) |
Answer:
| - 19 - (- 8) |
Step-by-step explanation:
Given that the 2 points have the same x- coordinate, then the distance between the 2 points is the difference in the y- coordinates, that is
distance = | - 19 - (- 8) | = | - 19 + 8 | = | - 11 | = 11
Or
distance = | - 8 - (- 19) | = | - 8 + 19 | = | 11 | = 11
PLEASE HELP explain how you can prove two circles are similiar
Answer:
By Looking at the shapes and sizes
Step-by-step explanation:
If you can try and look at the shape and size of it, if you can draw it, draw it on a piece of paper, trace them both, but in the same spot, you didn't specificize, if it was a sphere or just a regular circle or not, so thats all i can tell you.
Which of the following dot plots shows data that is symmetrical?
Hey there! I'm happy to help!
If something is symmetrical you can cut a line through it and it will be the same on both sides. If you have a perfect circle you can cut it in half and it will be the same on both sides, so it is symmetrical.
We see that W looks the same on both sides if you cut it in half at the 3. It is the same on both sides, so the answer is W.
Have a wonderful day! :D
Answer:
Y
Step-by-step explanation:
Pat wants to measure the length of a table. She'll use a measuring tape. Which units should Pat use to express the length?
A. Pints
B. Degress
C. Inches
D. Moles
Answer:
Inches is the best answer
Step-by-step explanation: This is because it is the only one that actually makes sense in the context of the question. Pint is for liquids, degrees is for angles, and moles is for molecules.
21+17·2−15+1 I WILL GIVE BRAINLYEST WHOEVER GETS IT CORRECT
Answer:
the answer is 62
Step-by-step explanation:
21 + 17 = 38
38 x 2 = 76
76 - 15 = 61
61 + 1 = 62
Gemma has 24 balls out of 24 balls 12 are yellow for pink and the rest are red what is the ratio of the number of red balls to the number of balls that are either yellow or pink
Answer:
12:12
Step-by-step explanation: 24-12 = 12 red balls therefore the ratio would be 12:12.
expand and simplify
2a + 3(a + 5)
Answer:
5a + 15
Step-by-step explanation:
2a + 3(a + 5)
open brackets
2a + 3a + 15
5a + 15
f(x)=-4x-6 and g(x)=3x+5. Find (f o g)(-3) plzzzzzzzzzzz helpppppppp
Answer:
(f o g)(-3) = 10Step-by-step explanation:
f(x) = - 4x - 6
g(x)=3x+5
To find (f o g)(-3) we must first find
(f o g)(x)
To find (f o g)(x) substitute g(x) into f(x) that's for every x in f (x) replace it with g (x)
That's
(f o g)(x) = - 4( 3x + 5) - 6
= - 12x - 20 - 6
(f o g)(x)= - 12x - 26
Now to find (f o g)(-3) substitute the value of x that's - 3 into (f o g)(x) and solve
We have
(f o g)(-3) = - 12(-3) - 26
= 36 - 26
We have the final answer as
(f o g)(-3) = 10
Hope this helps you
1. Mr. Jones's class collected tissue boxes. The
class brought in a total of 30 boxes. If the tissue
box dimensions are listed below, then how much
space will Mr. Jones need?
4 in
С
3 in
7 in
Answer:
420 inches of space in all equal length width and height
Step-by-step explanation:
Because 4+3+7 = 14 x 30
it all equals up to 420
Mr. Jones will need 420 inches of space in all equal length, width, and height.
What are Arithmetic operations?Arithmetic operations can also be specified by subtracting, dividing, and multiplying built-in functions. The operator that performs the arithmetic operations.
* Multiplication operation: Multiplies values on either side of the operator
For example 12*2 = 24
We have been given that the tissue box dimensions are 4, 3, and 7
If the class brought in a total of 30 boxes.
So the required space would be : (4+3+7)×30 = 14 × 30
it all equals up to 420.
Hence, he will need 420 inches of space in all equal length, width, and height.
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The table below shows the birth weight and the weight for the first three weeks of a baby whale. Determine the slope and y-intercept of the linear equation that models this data, write the equation and predict the baby whale’s weight at 4 weeks.
Week
Weight (lbs)
0
5000
1
6400
2
7800
3
9200
Student’s Work
Student’s Answer
A. y= 9200x+1400; 10,600 lbs
B. y= 5000x+1400; 21,400 lbs
C. y= 1400x+ 5000; 10,600 lbs
D. y= 5000 +41400; 21,400 lbs
Answer:
C
Step-by-step explanation:
The slope is 1400. And the y intercept is 5000 because when x=0 y=5000. And if you multiply 1400 by 4 and then add 5000 you get 10,600 lbs for the weight at 4 weeks.
The slope is 1400 and the y-intercept is 5000 of the linear equation which is the correct answer would be option (C) y = 1400x + 5000; 10,600 lbs.
What is the slope of the line?The slope of the line is defined as the angle of the line. It is denoted by m
Slope m = (y₂ - y₁)/(x₂ -x₁ )
Consider two points on a line—Point 1 and Point 2. Point 1 has coordinates (x₁,y₁) and Point 2 has coordinates (x₂, y₂)
We have to determine the slope and y-intercept of the linear equation that models this data,
Week Weight (lbs)
0 5000
1 6400
2 7800
3 9200
Slope = (7800 - 6400)/(2 - 1) = 1400
There is a 1400 slope.
And since y=5000 for x=0, the y-intercept is 5000.
So the equation of a baby whale’s weight at 4 weeks is y = 1400x + 5000
Hence, the correct answer would be option (C)
Learn more about the Slope of Line here:
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Please help this would mean a lot to me
Answer: D. m∠x+m∠y=180°
Step-by-step explanation:
m∠x and m∠y creates a linear pair (two angles formed one line)
a line is 180°, this means:
m∠x+m∠y=linear pair
m∠x+m∠y=180°
Hope this helps!! :)
Please let me know if you have any question
find the angle made by the line joining 5,3 and -1,-3 with the positive direction of x-axis
Answer:
45°
Step-by-step explanation:
gradient of the line:
Let A (-1,-3) and B (5,3)
tan a = (yB - yA) / (xB - xA) = (3 - -3) / (5 - -1) = 6/6 = 1
--> the angle made by the line and positive direction of x-axis is:
[tex]a = { \tan}^{ - 1} (1) = 45[/tex]
A ver si responden correctamente! Yo tenía $50 Mi mamá me dio $100 Mi papá me dio $500 Mi tío y mi tía me dieron $100 Yo tenía otros $75 ¿Cuánto tenía?
Tu tenías $825.
Dado que tu tenías $50, tu mamá te dio $100, tu papá te dio $500, tus tíos te dieron $100 y tu tenías otros $75, para determinar cuanto dinero tenías en total se debe realizar la siguiente operación matemática, consistente en una suma:
50 + 100 + 500 + 100 + 75 = X150 + 600 + 75 = X750 + 75 = X825 = XPor lo tanto, en total tu tenías $825.
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Is the following relation a function?
Answer:
no
Step-by-step explanation:
Solve for b:
3(b - 4) = -3
Answer:
b=3
Step-by-step explanation:
it is in the picture
Answer:
b = 3Step-by-step explanation:
=> 3(b - 4) = -3
=> 3b - 12 = -3
=> 3b = -3 + 12
=> 3b = 9
=> b = 9/3
=> b = 3
Which equation has a solution of x = 1.5
How many times does 12 go into 110
Answer:
it goes into 110 about 9 times
Step-by-step explanation:
Answer:
9 times
Step-by-step explanation:
12 * 9 = 108
4x+5x=63
Solving linear equations
Answer:
x = 7
Step-by-step explanation:
4x+5x=63
Combine like terms
9x = 63
Divide by 9
9x/9 =63/9
x = 7