Answer:
.7
Step-by-step explanation:
You buy 10 vegetarian pizzas and pay with $100. How much change do you receive?
3 Vegetarian Pizzas for
$25.50
You receive $ in change.
Answer:
$15
Step-by-step explanation:
3÷25.50 to get $8.50 per pizza then you would time that by 10 to get $85 as the total cost
g A water tank has a square base with each side of length 5 meters. Water enters through a hose at a constant rate of 20 liters per minute. At the same time a valve in the bottom is opening, so that after t minutes, water leaves at a rate of t liters per minute. If the tank starts out filled to a depth of 5 meters, after how many minutes will the tank be empty
Answer:
221 minutes
Step-by-step explanation:
It's a known fact that
1 m³ = 1000 L
W(t) = 2*2*5 m^3 + 20t - t²/2
W(t) = 20 + 20t - t²/2, on differentiating, we have
-0.5² + 20t + 20000 = 0, and
t = [40 +- √161600] / 2
= 20 + 20√101 for t > 0
so t = 221 minutes
HELP!!! NEED HELP! It is a very confusing lesson
Freddie made the number line below to model the laps he walks around a track at his
school. He walks a total of 1} miles. Each lap is į mile. How many laps does Freddie walk
around the track?
Answer:
On a standard running 400-meter track a mile is 4 laps… plus 9 more meters if you want to get all technical about it. A mile is specifically 1,609.3 meters.
Step-by-step explanation:
IM BEGGING U HELP Triangle ABC is similar to Triangle GHI. Find the measures of side length z and angle d. Write your answer below as follows:
Answer:
Side length z = 20 m
Angle d = 53°
Step-by-step explanation:
Since ∆ABC ~ GHI, therefore their corresponding side lengths would be proportional to each other. This implies that the ratio of their corresponding lengths are equal.
This also means that the same scale factor can be multiplied with any side length of ∆ABC to get the corresponding side length of ∆GHI.
The scale factor = HI/BC = 25/10 = 2.5
The side length that corresponds to z is AB which is 8 m long.
z = 8*2.5
✅Side length z = 20 m
Corresponding angles of similar triangles are congruent to each other.
Therefore,
✅Angle d = <I = 53°
Answer:
law of sines
law of cosines
Step-by-step explanation:
What is the range of this data set?
2.5, 6.1, 9.7, 11.4, 17.5, 20.2, 1.1, 12.6, 18.8
16.3
17.7
18.8
19.1
Answer:
19.1
Step-by-step explanation:
Range = Maximum value - minimum value
= 20.2 - 1.1
= 19.1
Answer:
19.1
Step-by-step explanation:
when you solve range you take the highest point and the lowest point and subtract then that's the answer
Use the graph off to find the value f(5).
Answer:
where is the graph
Step-by-step explanation:
Which is an INCORRECT name for this angle?
Answer:
<FH
Step-by-step explanation:
The reason why is because FH is a line and everything else includes G, this answer does not.
Which value for k makes the equation 42 ÷ k = 14 true? Select all that apply. A. 588 B. 62 C. 1452 D. 3 E. 23
3 is the value of k in the Linear equation .
What in mathematics is a linear equation?
An algebraic equation with simply a constant and a first-order (linear) component, such as y=mx+b, where m is the slope and b is the y-intercept, is known as a linear equation.
Sometimes, the aforementioned is referred to as a "linear equation of two variables," where x and y are the variables. Equations with variables of power 1 are referred to be linear equations. One example with only one variable is where ax+b = 0, where a and b are real values and x is the variable.
equation 42 ÷ k = 14
42/k = 14
42 = 14 * k
k = 42/14
k = 3
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The City Sights tour company had the same ratio of tourists to guides on both days this weekend. On Saturday, there were 120 tourists and 18 guides. On Sunday, there were 40 tourists.
How many guides were there on Sunday?
Answer:
There were 6 guides on Sunday.
Step-by-step explanation:
Same ratio
On Saturday, 120 tourists and 18 guides.
On Sunday, 40 tourists and x guides.
Due to the same ratio:
[tex]\frac{120}{40} = \frac{18}{x}[/tex]
[tex]3 = \frac{18}{x}[/tex]
[tex]3x = 18[/tex]
[tex]x = \frac{18}{3}[/tex]
[tex]x = 6[/tex]
There were 6 guides on Sunday.
solve for the angle x
Answer:
x=75
Step-by-step explanation:
30+x+x=180
2x=150
x=75
will give brainliest
Answer:
3ft
Step-by-step explanation:
it takes a while to explain and I dont have much time, but the answer is 3
PLEASE HELP !!!!!!!!!!!! Translate this sentence into an equation.
The sum of 17 and Delia's savings is 52.
Use the variable d to represent Delia's savings.
A ball-and-stick model of a glucose molecule is shown here.
How many of each type of atom are needed to make one
glucose molecule?
PLEASE HELP ME
Answer:
picture?
Step-by-step explanation:
Answer:
A ball-and-stick model of a glucose molecule is shown here.
How many of each type of atom are needed to make one
glucose molecule?
PLEASE HELP ME
Step-by-step explanation:
1 molecule of glucose contains 6 atoms of C, 12 atoms of H, and 6 atoms of O • 1 mole of glucose contains 6 moles of C atoms, 12 moles of H atoms, and 6 moles of O atoms. 10 moles of glucose contains 60 moles of C, 120 moles of H, and 60
Tonya has a 2-page story she wants to expand. She plans to write 3 pages per day until it is done. Which equation best represents the relationship?
Answer:
D. 60h = m
Step-by-step explanation:
A proportional equation that represents the relationship will be in the form of m = kh
Where,
Constant of proportionality = k = m/h
Using (2, 120),
k = 120/2
k = 60
Substitute k = 60 into m = kh
Thus:
m = 60h
This can also be written as 60h = m
A rectangular box is 40 cm wide and 36 cm high. If the surface area of the box is 7440 square centimeters, find the length of the box.
Answer:
The length of the rectangular box is 30 centimeters.
Step-by-step explanation:
Let suppose that rectangular box is closed. The rectangular box is represented by a parallelepiped, whose surface area ([tex]A_{s}[/tex]), measured in square centimeters, is defined by the following formula:
[tex]A_{s} = 2\cdot (w\cdot h + w\cdot l + h\cdot l)[/tex] (1)
Where:
[tex]w[/tex] - Width, measured in centimeters.
[tex]h[/tex] - Height, measured in centimeters.
[tex]l[/tex] - Length, measured in centimeters.
If we know that [tex]A_{s} = 7440\,cm^{2}[/tex], [tex]w = 40\,cm[/tex] and [tex]h = 36\,cm[/tex], then the length of the rectangular box is:
[tex]2880 +80\cdot l + 72\cdot l = 7440[/tex]
[tex]152\cdot l = 4560[/tex]
[tex]l = 30\,cm[/tex]
The length of the rectangular box is 30 centimeters.
Question regarding a Normal Distribution chart: Ten thousand adults were given a literacy test. The results were nearly normally distributed (μ = 75, σ = 15).
A. About how many scored between 60 and 80?
B. Approximately what score did only the top 15% exceed?
C. Find the percentile rank of the person who scored 88.
Answer:
a) 4,706 scored between 60 and 80
b) A score of 90.6.
c) 81th percentile.
Step-by-step explanation:
When the distribution is normal, we use the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this question, we have that:
[tex]\mu = 75, \sigma = 15[/tex]
A. About how many scored between 60 and 80?
Proportion:
This is the pvalue of Z when X = 80 subtracted by the pvalue of Z when X = 60. So
X = 80
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{80 - 75}{15}[/tex]
[tex]Z = 0.33[/tex]
[tex]Z = 0.33[/tex] has a pvalue of 0.6293
X = 60
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{60 - 75}{15}[/tex]
[tex]Z = -1[/tex]
[tex]Z = -1[/tex] has a pvalue of 0.1587
0.6293 - 0.1587 = 0.4706
How many?
0.4706 out of 10,000, so
0.4706*10000 = 4706
4,706 scored between 60 and 80.
B. Approximately what score did only the top 15% exceed?
The 85th percentile, which is X when Z has a pvalue of 0.85. So X when Z = 1.037.
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]1.037 = \frac{X - 75}{15}[/tex]
[tex]X - 75 = 1.037*15[/tex]
[tex]X = 90.6[/tex]
A score of 90.6.
C. Find the percentile rank of the person who scored 88.
This is the pvalue of Z when X = 88. So
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{88 - 75}{15}[/tex]
[tex]Z = 0.87[/tex]
[tex]Z = 0.87[/tex] has a pvalue of 0.8078
So, rounding up, the 81th percentile.
Discussion Prompt: A fair coin is tossed twice and the number of heads is recorded. Jose says the P(1 head) = 1/2, while Jeff students says P(1 head) = 1/3. Explain in detail why Jose is correct.
Let H represent heads and T represent tails.
Writing HH means we get two heads and HT means we get heads first, then tails second, and so on.
We have these four possible outcomes when flipping two coins
HHHTTHTTOf those four outcomes, two of them have exactly one head show up (HT and TH). The probability of getting exactly one head is 2/4 = 1/2, so this is why Jose is correct.
Evaluate the expression
3^3 x (12 - 2) ➗ 2
Answer:
135
Step-by-step explanation:
First 12-2=10
Then 3^3=27
After 27 times 10=270
Lastly 270 divided by 2=135
The simplified value of the expression 3³ × (12 - 2) ÷ 2 is 135.
What is PEMDAS rule?PEMDAS rule states the correct order of simplifying an expression is as follows -: Parenthesis, exponents, multiplications, divisions, additions, and, subtractions.
Given, an expression 3³ × (12 - 2) ÷ 2.
= 27 × (10)×1/2.
= 27 × 5.
= 135.
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ACTON
Find the Percentage, Rate Of Base
1. What is 25% of 1258
Answer:________
2. 50 is what percent of 4502
Answer:________
3. 75 is 30% of what number?
Answer:________
Answer:
314.5
2252.5
250
Step-by-step explanation:
X-4<5 I don’t get that
Answer:
x<9
Step-by-step explanation:
so first you add 4 to both sides,
then it is x<9 right?
WELL THAT'S THE ANSWER :)
pls give me brainliest
ˆ
THEY ARE CORRECT
GIVE THEM BRAINLIST BEFORE THIS GETS DELETED
Select the correct answer.
Find the solution(s) for x in the equation below.
A. x = -5
B. no solutions
C. x = 5
D. x = 5; x = -5
Answer:
Step-by-step explanation:
X=5; X=-5 this is the answer i put and got off math:::way
3х + 8 = 32
Can someone help to solve for y
Answer:
[tex]3x + 8 = 32 \\ 3x = 32 - 8 \\ 3x = 24 \\ x = \frac{24}{3} \\ x = 8[/tex]
0.4(0.25)(0.01) is the problem
helppppppppppppppppppppppppppp
1. Sam knows that his MP3 player has 40% of its battery life left and that the battery
charges by an additional 12 percentage points every 15 minutes. What percent of
the mp3's battery will be charged when Sam and his family leave?
I
Complete question :
Sam knows that his MP3 player has 40% of its battery life left and that the battery
charges by an additional 12 percentage points every 15 minutes. What percent of
the mp3's battery will be charged when Sam and his family leave? If mp3 was plugged in an hour before his family plan to leave.
Answer:
88%
Step-by-step explanation:
Time before leaving = 1hour
Current percentage = 40%
Charge rate = 12% every 15 minutes
Therefore,
Charge rate per minute :
12% / 15 = 0.8% per minute
Charge recieved after one hour (60 minutes) :
0.8% * 60
= 48%
Therefore, total charge after just before leaving is:
Current percentage + percentage received
40% + 48%
= 88%
what is -9x - 5x + 6x + 3 = ?
Answer:
-8x + 3
Step-by-step explanation:
What is 15% of 120? (:)) I ALSO NEED EXPLANATION
Answer:
Answer: 18
Step-by-step explanation:
Do 120 x 15%
Answer:
18
Step-by-step explanation:
15% is 15 out of 100, so in decimal form it would be 0.15. if you multiply 0.15 by 120 (0.15 * 120) you would get 18.
five hotdogs cost $1.80.Each hotdog cost the same amount.What is the cost per hotdog in dollars and cents
Answer:
$0.36
Step-by-step explanation:
Answer:
$0.36
Step-by-step explanation:
You divide $1.80 by 5.
Write the equation of the line in fully simplified slope-intercept form.
y
12
11
10
9
8
7
6
5
4
3
2
1
-12-11-10-9-8-7-6 -5 -4 -3 -2 21
1 2 3 4 5 6 7 8 9 10 11 12
-3
-4
-5
-6
-7
-10
-11
Answer:
y = ⁴/3x - 7
Step-by-step explanation:
✔️First, find the slope (m):
Slope (m) = ∆y/∆x = 4/3
m = ⁴/3
✔️Determine the y-intercept (b):
The y-axis is intercepted by the line at y = -7, therefore the y-intercept (b) would be -7.
b = -7
✔️Write the equation:
Substitute the value of m = ⁴/3 and b = -7 into y = mx + b (slope-intercept form equation).
y = ⁴/3x + (-7)
y = ⁴/3x - 7