Help with my math i will mark brainliest
Answer:
70
Step-by-step explanation:
100 * 420 / 600 = 70
answer: 70 people out of 100 had attended the previous year
PLLSSSSS HELLLP
A candle burns down at the rate of 0.5 inches per hour. The original height of the candle was 6 inches.
Part A: Write a list of 6 ordered pairs to show the height of the candle in inches (y) as a function of time in hours (x) from the first hour after it started burning. For example, the point (0, 6) would represent a height of 6 inches after 0 hours. Explain how you obtained the ordered pairs. (5 points)
Part B: Is this relation a function? Justify your answer using the list of ordered pairs you created in Part A. (2 points)
Part C: If the rate at which the candle burnt was 0.3 inches per hour instead of 0.5 inches per hour, will the relation continue to be a function? Explain your answer using input and output values. (3 points)
Answer:
Part A: 0,6 1, 5.5 2,5.0 3,4.5 4,4.0 5,3.5 6,3.0
Step-by-step explanation:
Part B: This would be a function, it has a constant rate of change.
Part C: 0,6 1,5.7 2,5.4 3,5.1 4,4.8 5,4.5 6,4.2, this would still be a function, just at a slower rate of speed.
Please Help !!!!!!!!!!!
Answer:
its A the cost increases $2.50
Step-by-step explanation:
50 POINTS!!! Word problem.
A class contributed $8.40 in dimes and quarters to the Red Cross. In all, there was 45 coins. How many coins of each kind were there?
Please also give an explanation. 50 points are a big deal.
Answer:
Step-by-step explanation:
Let d = # of dimes
Let q = # of quarters
45 = d + q
.1d + .25q = 8.40
Then we can use the substitution method and make it so that d = 45 - q.
Then plug in the value for d into the second equation.
.1(45-q)+.25(q)=8.40
4.5-.1q+.25q=8.40
4.5+.15q = 8.40
.15q = 3.90
q = 26
d = 45 - 26 = 19
26 quarters
19 dimes
What is 9 3/7 in simplest form?
Answer:
I dont think it can be simplified
Step-by-step explanation:
Answer: 66/7 is chi answer
Step-by-step explanation:
3/5 of 30 help please
Step-by-step explanation:
= 3/5 * 30
= 3 * 6
= 18
Hope it helps :)
plz plz plz plz help me 20 pt
Answer:
3 1/4 x 2/3=2.16
Step-by-step explanation:
morganville and newton are 24, miles apart. on a map. the two cities are 3 inches apart? What is the map scale?
Answer:
Step-by-step explanation:
we have 24/3=8
1 inch is 8 miles
1in:8miles
Multiply. Write in simplest form. 1/2 * 24
Multiply. Write in simplest form. 2/13 * 26
Multiply. Write in simplest form. 2/5 * 17
Multiply. Write in simplest form. 18 * 1/4
Multiply. Write in simplest form. 1/15 *18
Answer:
1. 12
2. 4
3. 6.8
4. 4.5
5 1.2
Step-by-step explanation:
HARD BUT LOTS OF POINTS PLS HELP FIRST GET BRAINLIEST.
Find the area of the figure below.
Answer:
132
Step-by-step explanation:
the top rectangle is 28
the middle rectangle is 56
each of the triangles are 24
48+28+56
Answer:
132cm
Step-by-step explanation:
What is the solution to this system of linear equations?
2x + y = 1
3x - y = -6
A. (-1,3)
B. (1,-1)
C. (2,3)
D. (5,0)
Answer:
A. (-1 , 3)
Step-by-step explanation:
2x + y = 1
plus 3x - y = -6
------------------------------
5x = -5
x = -1
y = 1 - (2*-1) = 3
Select ALL expressions that are equivalent to -6. *
-7 + 13
-10 - (-4)
26 - 32
16 - 10
3 - ( - 3)
Answer:
The terms equivalent to - 6 are
- 10 - ( - 4)
26 - 32
Answer:
Only the 2nd and 3rd expressions are equal to -6
Step-by-step explanation:
The only way to do this is evaluating ot actually doing each expression:
Some key skills needed are subtraction with negative numbers, distributing the negative properly, and addition.
The first one is -7+13. This can be rewritten as 13-7. And this is 6, so it is not equal to -6. The 2nd one is -10-(-4). You have to distribute that minus sign after the -10 to the -4. Think of the subtraction symbol I mentioned as -1. -1(-4) is 4 since the negative signs cancel out. It would then be -10 + 4 which -6. So this works. This one is 26 - 32. You have to subtraction here. 26 - 32 is the opposite of 32 - 26. 32 - 26 is 6, so 26 - 32 would be -6. So the 3rd one is another one eqial to -6. This is simple subtraction. 16 - 10 is 6, so this one definitely does not work. This uses the same skill as number 2. Think of the minus sign after the positive 3 as a -1. -1(-3) is 3, so it would be 3 + 3 which is 6.Only the 2nd and 3rd ones work. Hope you understood and have a nice day!!
a book has x pages. How many pages are in the book if Maria read 45 pages of a book on Monday, 1/2 the book on Tuesday, and the remaining 72 pages on Wednesday?
Answer:
there is 194 pages
Step-by-step explanation:
half of the book : 72 + 45 = 97
97 x 2 = 194
Answer:
194 pages.
Step-by-step explanation:
please help i’m doing pythagorean theorem and don’t understand this please explain ty!
Answer:
Hypotenuse
Step-by-step explanation:
Base ² + perpendicular ² = Hypotenuse ²
in short we write H² = P² + B²
Hope this helps you.
On a certain function machine, an input of 2 has an output of -8. An input of -5 has an output of 20. An input of 0 has an output of 0. Which of the following phrases describes the function rule?
Subtract 10.
Multiply by -2 and then subtract 4.
Multiply the input by -4.
Multiply by -3 and then add 5.
Answer:
Multiply the input by -4
Step-by-step explanation:
2*-4=-8
-5*-4=20
Pasqual uses 645.6 quarts of water in 7 days. Suppose he uses the same amount of water each day. About how much water does Paqual use each day?
Answer:
92.228
Step-by-step explanation:
He uses around 92.228 quarts of water each day, take the amount of water used in the 7 days and divide by 7 :)
Giving brainliest please help with math
Answer:
the many solutions i think
What is the longest time difference that can be found on the map (consider standard time only)? Give the locations and the time zones involved.
Match the expression to the correct property that is shown.
Question 3 options:
Identity Property of Multiplication
Identity Property of Addition
Distributive Property
Multiplicative Property of Zero
Commutative Property of Addition
Associative Property of Addition
Associative Property of Multiplication
Commutative Property of Multiplication
1.
9+2+(4+3)=9+(2+4)+3
2.
y(xz)=(yx)z
3.
4+3+2=2+4+3
4.
5x ∙ 0=0
5.
-12 + 0 = -12
6.
−110×1=−110
7.
m∙4∙3=4∙m∙3
8.
4(3x+1)=12x+4
Answer:
This is a help site, so I'll explain each property and see if you can match them yourself.
Associative property of addition, you can add 3 or more different numbers any which way, the sum will be the same.
Commutative Property of Addition - same as the associative property but with 2 numbers.
Identity Property of Multiplication - Any number multiplied by one is itself
Multiplicative Property of Zero: x * 0 = 0
Associative Property of Multiplication - Same as that of addition, yet with multiplication.
Distributive Property: Factoring Out.
EX: (12 x 15) = 3(4 x 5)
A bag of sugar contains 9 cups. A batch of muffins uses ¾ cups of sugar. How many batches of muffins can you make if you use all of the sugar?
Answer:
answer choices. 4. 3 4/6. 4 1/4. 1 1/4
Step-by-step explanation:
theres your answer my guy
Answer:
12
Step-by-step explanation:
9/(3/4) = x
It will be much easier to do and understand if you change 3/4 to 0.75. Now look at the problem
9/(0.75) = 12
12 batches of cookies can be made
carl the cannonballer can make the bestest splashes of anyone at the local swimming pool. his splashes are legen...wait for it..dary! carl used to be the splash 40 people with cannon ball but now he has increased the number of people can be splash by 45%. what is the new number of people carl can splash?
A).53 people C).63 people
B).58 people D).68 people
Answer: is it B.
Explanation:
what is equivalent to 3/8 that has a numerator of 4
Answer:
I would say None.
Step-by-step explanation:
The only option would be 1/4. But, you divide 3 by 2. without getting a negative number.
So therefore, your answer is None.
One leg of a right triangle is 3.2 centimeters long. The length of the second leg is 5.7 centimeters.
What is the length of the hypotenuse? Round to the nearest tenth if necessary.
A ) 2.5 cm
B ) 4.7 cm
C ) 8.9 cm
D ) 6.5 cm
can somebody pls help me with this question I dont get it
Answer:
1. 195=6.50·c
2. 30
Step-by-step explanation:
195=6.5·c
Divide both sides by 6.5
30=c
5+2x5-3 please do it step by step :p
Answer:
12
Step-by-step explanation:
PEMDAS
5+2*5-3
2*5=10
10+5=15
15-3=12
Answer:
5+2x5-3 is 12
Step-by-step explanation:
First you do 2x5=10
5+10-3
then 5+10=15
15-3
then 15-3=12
What is the volume, to the nearest hundredths cubic centimeters, of the sphere shown below?
Answer:
Volume of sphere is V=4/3 pi (radius)cubed.
Step-by-step explanation:
radius=diameter/2=15
V=4/3 (22/7) 15 x 15 x 15 = 14142.9 =14,142.9 ≅ 14,143 ≅ 14,140 (round to the hundredths cubic centimetres )
Will give brainly if you show work! I made 10 CUPS of granola that are served in 2/3 cup servings. How many people can we serve/feed out of the 10 cups of granola? Are you +, -, x, or dividing? Solve line by line, step by step. NOT WITH A DIAGRAM.
Pls answer.hurry pls.will give brainlest.Thank you
Plz answer will give brainliest
Answer:
I say C because it forms a trench and a trench is when one plate is pushed, or subducts, beneath another.I also did my research and it said " If a convergent boundary involves a continental landmass and an ocean basin, a subduction zone forms. Subduction occurs where a plate moves underneath the other."
What are the coordinates of the point (-9, 4) after a 90 degree rotation followed by a translation 3 units right?
The coordinates of the point (-9, 4) after a 90 degree rotation followed by a translation 3 units right are (8,9) (for clockwise rotation) and (0,-9) (for counterclockwise rotation)
How does rotation by 90 degrees changes coordinates of a point if rotation is with respect to origin?Let the point be having coordinates (x,y).
Case 1: If the point is in first quadrant:Subcase: Clockwise rotation:
Then (x,y) → (y, -x)
Subcase: Counterclockwise rotation:
Then (x,y) → (-y, x)
Case 2: If the point is in second quadrant:Subcase: Clockwise rotation:
Then (x,y) → (y, -x)
Subcase: Counterclockwise rotation:
Then (x,y) → (-y, x)
Case 3: If the point is in third quadrant:Subcase: Clockwise rotation:
Then (x,y) → (y, -x)
Subcase: Counterclockwise rotation:
Then (x,y) → (-y, x)
Case 4: If the point is in fourth quadrant:Subcase: Clockwise rotation:
Then (x,y) → (y, -x)
Subcase: Counterclockwise rotation:
Then (x,y) → (-y, x)
Case 5: For points on axesYou can take that point in any of the two surrounding quadrants. Example, if the point is on positive x axis, then it can taken as of first quadrant or fourth quadrant.
Case 6: On originNo effect as we assumed rotation is being with respect to origin.
For this case, the point (-9,4) (present in second quadrant) is rotated by 90 degrees.
This rotation can be either clockwise, or counterclockwise.
Thus, for each case, we have:
case 1: Clockwise rotation:Then (x,y) → (y, -x), therefore, (-9,4) → (4, 9)
case 2: Counterclockwise rotation:Then (x,y) → (-y, x), therefore, (-9,4) → (-4, -9)
Now, when shifting to right by 4, that means, we're making no changes vertically, but old x-coordinates are increased by 4 to make them shift to right side as value of x increases as we go more and more to the right side with respect to the origin and in defaultly oriented cartesian space.
Thus, we have:
case 1: Clockwise rotation:
After translation of 4 units right:
(4, 9) → (4+4, 9) = (8,9)
case 2: Counterclockwise rotation:After translation of 4 units right:
(-4, -9) → (-4+4, -9) = (0,-9)
Thus, the coordinates of the point (-9, 4) after a 90 degree rotation followed by a translation 3 units right are (8,9) (for clockwise rotation) and (0,-9) (for counterclockwise rotation)
Learn more about rotation of a point with respect to origin here:
https://brainly.com/question/18856342