Answer: He is mopping at a rate of 15 minutes per classroom or a ratio of 1 classroom/15 minutes
Step-by-step explanation: If he takes 5 minutes to mop 1/3 of a classroom, then to mop 1 whole classroom, he will take 5 x 3=15 minutes because 1/3 x 3 is 1 and 5 x 3 is 15.
Please help me I'm desperate
Answer:
29 is the correct answer.
Answer:
29
Step-by-step explanation:
4²(3-1/2)-√121
16(3-1/2)-√121
40-√121
=29
A kangaroo hops to a height of 1 m 8 cm and moves a distance of 2 m 50 cm in one hop. What is the difference between the height and the distance it covers ?
Answer: 1m42cm
Step-by-step explanation:
Distance - height = 2m50cm - 1m08cm = 1m42cm
What is the range of this data set?
1
2
3
4
Answer:
4
Step-by-step explanation:
the lowest point is 1
the highest point is 5
5-1
4
Answer:
probably the lowest point
The expression 2x + 4x represents the cost of buying the same number of cases of spring water, sold for $2 per case, and sparkling water, sold for $4 per case. What expression can be used to express the total cost?
Answer: 2x + 4x = (2 + 4)x = 6x
Step-by-step explanation:
The expression 2x + 4x represents the cost of buying the same number of cases of spring water and sparkling water. To express the total cost, we need to add the cost of buying the two types of water.
Since the expression 2x represents the cost of buying x cases of spring water, and 4x represents the cost of buying x cases of sparkling water, the total cost can be expressed as:
2x + 4x = (2 + 4)x = 6x
Therefore, the total cost of buying x cases of spring water and sparkling water can be expressed as 6x.
Alternatively, you can think of it as buying x cases of spring water at a cost of 2x dollars and x cases of sparkling water at a cost of 4x dollars. So the total cost is (2x+4x) dollars which is 6x dollars.
- C
Joseph has a bag filled with 2 red, 4 green, 15 yellow, and 9 purple marbles. Determine P(not purple) when choosing one marble from the bag.
70%
50%
30%
20%
Answer:
Step-by-step explanation:
i took a test with this qeston is 20
Complete each congruency statement and name the rule you used. If you cannot show the triangles are congruent from the given information, leave the triangles blank and write CNB for "Cannot be determined" in place of the rule.
Answer:
Step-by-step explanation:
Consider the two functions shown here. Which function has the greater rate of change? Explain your answer. Responses A Function 1, because its rate of change is ½ .Function 1, because its rate of change is ½ . B Function 1, because its rate of change is 2.Function 1, because its rate of change is 2. C Function 2, because its rate of change is ½.Function 2, because its rate of change is ½. D Function 2, because its rate of change is 7.
Answer:
Function 1 has the greater rate of change because it is 2. Function 2's rate is 1/2
Step-by-step explanation:
Answer:
Step-by-step explanation:
The rate of change of a function is its slope, which is the ratio of the change in the y-coordinate to the change in the x-coordinate. The slope is also known as the "rise over run" or "change in y over change in x".From the given information, the first function is y=x+2 and the second function is y=7x-2.The rate of change of the first function is 1, because the y-coordinate changes by 1 unit for every 1 unit change in the x-coordinate. The rate of change of the second function is 7, because the y-coordinate changes by 7 units for every 1 unit change in the x-coordinate.Therefore the correct answer is D) Function 2, because its rate of change is 7.
Use the tape diagram to find the value of 1/2 / 1/3. Show your reasoning.
Answer:
5/6
Step-by-step explanation:
In fractions, you can convert 1/2 and 1/3's denominators into a common number.
First, multiply 2 by 3 and 3 by 2. The denominator will be 6
Then, multiply the top by the same number (the numerator)
1/2*3/3 = 3/6.
1/3*2/2=2/6
3/6+2/6=5/6
Answer: 1.5, 1 1/2
Step-by-step explanation:
1/2 / 1/3
reciprocal of 1/3 is 3/1
1/2 x 3/1 = 3/2 = 1 1/2
Kyle is shopping for his favorite
cereal at the grocery store. The
9 ounce box costs $2.52 while the 12 ounce box costs $3.60. Which is the better deal? How much will he save per ounce?
A) 9 oz.; 20¢/oz.
B) 12 oz.; 20%/oz.
C) 9 oz.; 2¢/oz.
D) 12 oz.; 2¢/oz.
E) 12 oz.; 9¢/oz.
better deal for Kyle means which is cheaper, namely which one gives the more Cereal per penny.
well, we can look at both deals from a standpoint of a rate, let's see how much each one costs per ounce.
[tex]\begin{array}{ccll} oz&\$\\ \cline{1-2} 9 & 2.52\\ 1& x \end{array} \implies \cfrac{9}{1}~~=~~\cfrac{2.52}{x}\implies 9x=2.52\implies \underset{\textit{\LARGE better deal}}{\stackrel{\textit{28 cents per ounce}}{x=\cfrac{2.52}{9}\implies x=0.28}} \\\\[-0.35em] ~\dotfill\\\\ \begin{array}{ccll} oz&\$\\ \cline{1-2} 12 & 3.60\\ 1& y \end{array} \implies \cfrac{12}{1}~~=~~\cfrac{3.60}{y}\implies 12y=3.6\implies \stackrel{\textit{30 cents per ounce}}{y=\cfrac{3.6}{12}\implies y=0.30}[/tex]
well, yes, "x" is better but by how much? well, 0.30 - 0.28 = 0.02, by 2¢ at Mt Rushmore.
Can you solve this for me? Thank you! :>
Answer:
p=7/2
Step-by-step explanation:
2p=7
/2. /2
p=7/2
now to check
2(7/2)=7
14/2=7
7=7
its true
hopes this helps
How many lines does the graph of this system have?
y=(3)/(4)x+2 and 3x+4y=8
Answer:
2 lines??
Step-by-step explanation:
The graph above shows the
high temperatures of a city
on certain days in July. Find
the rate of change from the
12th to the 24th
A) -0.5%/day
B) 0.5%/day
C) -2°/day
D) 2°/day
E) 2.5°/day
the slope goes by several names
• average rate of change
• rate of change
• deltaY over deltaX
• Δy over Δx
• rise over run
• gradient
• constant of proportionality
however, is the same cat wearing different costumes.
to get the slope of any straight line, we simply need two points off of it, let's use the ones from the picture below.
[tex](\stackrel{x_1}{12}~,~\stackrel{y_1}{90})\qquad (\stackrel{x_2}{24}~,~\stackrel{y_2}{96}) \\\\\\ \stackrel{slope}{m}\implies \cfrac{\stackrel{\textit{\large rise}} {\stackrel{y_2}{96}-\stackrel{y1}{90}}}{\underset{\textit{\large run}} {\underset{x_2}{24}-\underset{x_1}{12}}} \implies \cfrac{ 6 }{ 12 } \implies \cfrac{\stackrel{degree}{1} }{ \underset{day}{2} }\implies 0.5~\frac{degree}{day}[/tex]
Which event will have a sample space of S = {h, t}? Flipping a fair, two-sided coin Rolling a six-sided die Spinning a spinner with three sections Choosing a tile from a pair of tiles, one with the letter A and one with the letter B
Answer: a fair two-sided coin
Step-by-step explanation:
there are only two sides, and the equation is s= h,t which also h,t means heads, tails
or
A pizza restaurant used its final 2/3 of a liter of pizza sauce to make some pizzas. They put 1/6 of a liter of sauce on each pizza. How many pizzas did they make?
Write your answer as a fraction or as a whole or mixed number.
Answer:
4
Step-by-step explanation:
1/6x = 2/3 Multiply each sides by 6
x = [tex]\frac{2}{3}[/tex] x [tex]\frac{6}{1}[/tex]
x = 4
Answer:
Step-by-step explanation:
if they used 1 liter of sauce on each pizza, it would be 1x=2/3.
So if we use this for 1/6 of a liter of sauce on each pizza…
(x is the number of pizza’s they make.)
= [tex]\frac{1}{6}[/tex]х=[tex]\frac{2}{3}[/tex]
x6 on both sides
= 1x=9
Therefore, the pizza restruant made 9 pizzas.
$225 grows 3.2% in an account. How much money is in the account after the growth? Express your answer to two decimal places.
Answer:
To find out how much money is in the account after the growth, we can use the formula:
FV = PV(1+r)
Where FV is the future value of the account, PV is the present value of the account, and r is the rate of growth expressed as a decimal.
In this case,
PV = $225
r = 3.2% = 0.032 (as a decimal)
By substituting the values in the formula:
FV = PV(1+r)
FV = $225 * (1 + 0.032)
FV = $225 * 1.032
FV ≈ $232.7 (rounded to two decimal places)
Therefore, the account has $232.7 after the growth of 3.2%.
Answer: $232.20
Step-by-step explanation:
3.2%=0.032
225x0.032=7.2
225+7.2=232.2
pls help! due today
Answer:
b
Step-by-step explanation:
it was pretty simple you just had to read
What is the measure of angle F?
A. 60°
B. 65°
C. 110°
D. 125°
c 110
Step-by-step explanation:
crista
Answer:
C) 110°
Step-by-step explanation:
The answer is 110° because trapezium SDVL and FJRK are both equal.
Letter resemblence: (basically what letter in SDVL equals a letter in FJRK)
S = F
D = J
V = R
L = K
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Answer:
8
Step-by-step explanation:
28.4 and 710 aren't the right answers and it keeps telling me to try again I don't know what to do.
HELP!!! At the ice cream shop, there are 14 shakes sold for every 6 malts. Record the ratios below:
malts to shakes:
malts to total:
The ratio of the perimeter of a regular hexagon to the length of one of its sides is always 6 to 1.
Complete the table.
Perimeter of hexagon (inches) 6 30 48
Side length of hexagon (inches) 1
9
Answer:
45
Step-by-step explanation:
6+30+48-1-9=45
please help meeee pleaseeeeee
Answer:39
Step-by-step explanation:
Answer:
39 sq cm
Step-by-step explanation:
you need to find out the area of the entire rectangle, which is 9x5, or 45
now subtract out from 45 the area of the triangle
the triangle is a right triangle and we can use the pythagorean theorem to find the base is 5
we can calculate the height as 12/5
since area (triangle) is 1/2(base)(height) we get:
1/2(5)([tex]\frac{12}{5}[/tex]) which gives us 6
so area of shaded region is 45-6, or 39
Simplify the given expression. Show all steps. Submit your handwritten work or use the equation editor to receive credit.
(z√y√x)^8
[tex](\sqrt{z} \sqrt{y} \sqrt{x } )^8[/tex]
[tex]~\hspace{7em}\textit{rational exponents} \\\\ a^{\frac{ n}{ m}} \implies \sqrt[ m]{a^ n} ~\hspace{10em} a^{-\frac{ n}{ m}} \implies \cfrac{1}{a^{\frac{ n}{ m}}} \implies \cfrac{1}{\sqrt[ m]{a^ n}} \\\\[-0.35em] ~\dotfill\\\\ \left( \sqrt{z} ~~ \sqrt{y} ~~ \sqrt{x} \right)^8\implies \left(\sqrt{zyx} \right)^8\implies \left(\sqrt[2]{(zyx)^1} \right)^8 \\\\\\ \left( (zyx)^{\frac{1}{2}} \right)^8\implies (zyx)^{\frac{1}{2}\cdot 8}\implies (zyx)^4\implies z^4 y^4 x^4[/tex]
Answer:
[tex]z^{4}[/tex][tex]y^{4}[/tex][tex]x^{4}[/tex]
Step-by-step explanation:
Another way to write the expression is
([tex]z^{1/2}[/tex][tex]y^{1/2}[/tex][tex]x^{1/2}[/tex]) ^8
the power to power principle tells us that when we raise a power to a power, we multiply the exponents
[tex]\frac{1}{2}[/tex] x[tex]\frac{8}{1}[/tex] = [tex]\frac{8}{2}[/tex] = 4
[tex]z^{4}[/tex][tex]y^{4}[/tex][tex]x^{4}[/tex]
compute
-|-13|+2|+|47-(-13)*5|
Answer:
the answer is 245
Step-by-step explanation:
13+2=15 and 15+ 47=62-13=49x5=245 hope this helps:)
Answer: 127
Step-by-step explanation:
=13+2+47+65
=127
DON’T FORGET ABOUT ORDER OF OPERATIONS
I need help on this it's due tomorrow please help.
Answer:
$8/hour
Step-by-step explanation:
You are given 3 points.
You need to use two of them to find the slope.
The slope is the rate of change.
Let's use points (1, 28) and (2, 36).
slope = (difference in y)/(difference in x)
slope = (y_2 - y_1)/(x_2 - x_1)
slope = (36 - 28)/(2 - 1)
slope = 8/1
slope = 8
Answer: The rate of change is $8/hour.
Lenor is the manager at a catering company. Each dinner consists of one serving of fish and one serving of vegetables. The fish costs f dollars per serving, and vegetables cost v dollars per serving. Lenor needs to make 75 dinners for Friday and 150 dinners for Saturday.
Answer:
so... what exactly.. is the question. if you lmk i would be happy to answer it for you. but i cant answer an unasked question
You use a garden hose to fill a wading pool. If the water level rises 14 centimeters every 3 minutes and you record the data point of (9,y), what is the value of y? Use slope to justify your answer.
Answer:
y is the number of centimeters per minutes
Step-by-step explanation:
Answer:
y = # of centimeters per min
Step-by-step explanation:
Need answer asap will give brainly if its correct
A chemist prepares two acid solutions.
Solution 1
3 parts sulfuric acid to 7 parts water
Solution 2
4 parts sulfuric acid to 9 parts water
a. Use a ratio table to determine which solution is more acidic.
Solution 1 Solution 2
Water Sulfuric Acid
Water
Sulfuric Acid
7
9
21
18
42
45
63
63
Question 2
Solution
has the greater concentration.
Question 3
b. Use a graph to determine which solution is more acidic.
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
Both graphs begin at $($ Response area, Response area $)$ . The graph for solution Response area is steeper, so it has Response area concentration of acid.
Answer:
Check Description for answer
Step-by-step explanation
do it urself
Answer:
A) solution 2 is more acidic than solution 1
Step-by-step explanation:
A chemist prepares two acid solutions:
Solution 1: 3 parts sulfuric acid to 7 parts water
Ratio of sulphur to water: 3/7 (3:7)
Solution 2: 4 parts sulfuric acid to 9 parts water
Ratio of sulphur to water: 4/9 (4:9)
___________________________________________________
Part A: (using ratios to determine which solution is more acidic)
First we make same denominator, since the denominators are 9 and 7, we have to find the lcm (lowest common multiple) they both have with is 63. To do that, we must multiply the denominators with either 7 or 9.
Solution 1: Numerator (3) multiplied by 9 and then denominator (7) multiplied by 9. This makes out fraction/ratio 27/63
Solution 2: Numerator (4) multiplied by 7 and then denominator (9) multiplied by 7. This makes out fraction/ratio 28/63
Since 28/63 (or just 28) is a larger quantity than 27/63 (or just 27) this means solution 2 is more acidic than solution 1.
Mathematical Line (Not sure what you would call this lol): 28 > 27
Part B: (Let 'y' amount of sulfuric acid mix with 'x' amount of water)
Equation of solution 1: y = 3/7x
Equation of solution 2: y = 4/9x
Please find attachment for graph.
Part C: Don't have a graph, sorry! (part a. method is more preferred to find more acidic because it gives the actual acidic amount.)
Sandy used a virtual coin toss app to show the results of flipping a coin 80 times, 800 times, and 3,000 times. Explain what most likely happened in Sandy's experiment.
Sandy's experimental probability was exactly the same as the theoretical probability for all three experiments.
Sandy's experimental probability was closest to the theoretical probability in the experiment with 80 flips.
Sandy's experimental probability was closest to the theoretical probability in the experiment with 800 flips.
Sandy's experimental probability was closest to the theoretical probability in the experiment with 3,000 flips.
Answer:
In Sandy's experiment of flipping a coin, it is most likely that Sandy's experimental probability was closest to the theoretical probability in the experiment with 3,000 flips.
The Law of Large Numbers states that as the number of trials or experiments increases, the experimental results should approach the theoretical probability more closely. In this case, since the number of flips increases from 80 to 800 to 3,000, the experiment with 3,000 flips provides a larger sample size and is more likely to converge towards the theoretical probability.
Therefore, the experiment with 3,000 flips would provide a better approximation of the theoretical probability compared to the experiments with 80 or 800 flips.
