Q1.) Morgan buys 3 pairs of socks for $1.29 each and a pair of shoes for $29.95. The sales tax is 8 %.
What is the total amount she spends including tax?
Answer:
She spends $36.53
The half-life of the isotope Osmium-183 is 12 hours. Choose the equation below that gives the remaining mass of Osmium-183 in grams, M.
after n half-lives have elapsed if there was an initial mass of 590 grams before decay. Then, use the equation to determine the mass remaining
after 36 hours have passed
Mn = 590. ()": M3 – 148
D
M, = 590 C4)*-* : My ~ 148
Mn = 590 - ()": Mz - 74
Mi = 590 - (1) * + : Mz - 74
The given equations are incomprehensible, I'm afraid...
You're given that osmium-183 has a half-life of 12 hours, so for some initial mass M₀, the mass after 12 hours is half that:
1/2 M₀ = M₀ exp(12k)
for some decay constant k. Solve for this k :
1/2 = exp(12k)
ln(1/2) = 12k
k = 1/12 ln(1/2) = - ln(2)/12
Now for some starting mass M₀, the mass M remaining after time t is given by
M = M₀ exp(kt )
So if M₀ = 590 g and t = 36 h, plugging these into the equation with the previously determined value of k gives
M = 590 exp(36k) = 73.75
so 73.75 ≈ 74 g of Os-183 are left.
Alternatively, notice that the given time period of 36 hours is simply 3 times the half-life of 12 hours, so 1/2³ = 1/8 of the starting amount of Os-183 is left:
590/8 = 73.75 ≈ 74
Stephanie can jump rope 12o turns in 3 minutes. How many turns does she make in 1 minute
Answer:
40
Step-by-step explanation:
120 divided by three equals fourty
Mount Whitney, is the highest point in California. It sits at 14,494 feet above sea level. The lowest point in California is Death Valley, which is 282 feet below sea level. What is the DIFFERENCE between the two points? ITS TIMED!!
Answer:
14,776 feet
Step-by-step explanation:
for a cube with side length 4cm, calculate the surface area
Answer: I believe that’s 96 squared cm
Step-by-step explanation:
The formula for surface area for a cube is 6 times the side to the power of 2
6*4^2 = 96 cm^2
1. y-23=55 2. x-14= -8
3. -15 = n + 18 4. 18.3 + a = 2.7
what are the answers for all of these i need help FAST!!!
Answer:
1. y = 32
2. x = 6
3. -33 = n
4. a = -15.6
Step-by-step explanation:
1.
y-23=55
+23 +23 (23 cancels)
y = 32
2.
x - 14 = -8
+14 +14 (-14 cancels)
x = 6
3.
-15 = n + 18
-18 -18 (18 cancels)
-33 = n
4.
18.3 + a = 2.7
-18.3 -18.3 (18.3 cancels)
a = -15.6
What is the equation of the line that passes through the points ( 5,-2) and (-5,0)
Answer:
y=-1/5x-1
Step-by-step explanation:
Please help me ASAP I’m really confused
finish the lyrics
a potoao flew
Around my room before you came.
Answer: around my room before you came
Step-by-step explanation:
If 25% of the whole school (630 students) got to go on the trip, how many
students is that? help i’m gone fail idc how easy this is
Answer:
157 Students go on the trip
Step-by-step explanation
630 x .25
= 157.5
Answer:
Perceentage of whole students= 25%
Students= 630
630 X 25
157.50
Hope it helps
help me with this thanks
Answer:
hiii
Step-by-step explanation:
Answer:
Answer is B
Step-by-step explanation:
Front view is the same as viewing from the side, and on top it just looks like a square
Hope I helped
^>…~|-+First Answer Gets Brainliest+-|~…<^
Question Is in the picture!
Answer: ten times 3 x ^2
Step-by-step explanation:
Answer:
Substitute 10 for x in the equation. [tex]3(10)^2[/tex]. If that is not a choice for the answer then you would multiply 10 by the second power.
[tex]3(10)^2\\3(100)[/tex]
Step-by-step explanation:
I hope this helps! May i please have brainliest? :)
A quadratic function is represented by the graph. (graph below.) (do a-d.)
(a) What is the equation of the axis of symmetry of the function?
(b) What are the coordinates of the vertex of the function?
(c) What are the coordinates of the x-intercepts of the function?
(d) What are the coordinates of the y-intercept of the function?
Answer:
The axis of symmetry is x=1
The vertex is (1,-9)
The x-intercepts are (4,0) and (-2,0)
The y-intercept is (0,-8)
Step-by-step explanation:
axis of symmetry is the line where the vertex is, so in the quadratic of x^2, the axis of symmetry would be zero because half of the equation is on one side and the other half on the other side
The vertex is the lowest point on the quadratic, on the y values
the x-intercepts are the places the graph intercepts the x-axis.
The y-intercepts are the places the graph intercepts the y-axis
ask if u still have any questions!
Which of the following shows the least expensive unit price?
Answer:
A (3 Oranges For $1.02)
Step-by-step explanation:
3 Oranges for $1.02 is $0.34 for each Orange
4 Oranges For $1.52 is $0.38 for each Orange
6 Oranges for $2.46 is $0.41 for each Orange
5 Oranges for $1.75 is $0.35 for each Orange
Which Makes The First One The Cheapest Out Of All
Help asap pls for brainliest!
Answer:
D
Step-by-step explanation:
Answer:
D
Bro this is the answer!
Michael's class held a food drive for the holidays. There are a total of 29 students in his class. On average, each boy and girl bought 3 cans of food apiece. If the class brought in a total of 87 cans of food, how many boys and how many girls are in the class ?
Answer:
19 girls snd 10 boys
please help, if u get it I’ll give you brainliest!!
find the area with explanation!
Answer:
4ft
Step-by-step explanation:
we will use the formula which states area of triangles is equal to base multiplied height divided by 2
base=5ft
height=8ft
area=5*8/2
=13/2
=6.5ft
this pic is not clear pls mention better next time I was confused what is 4ft and what is 8ft however if I have understood wrong I have also written the formula.
SOMEONE PLEASE HELP ME I WILL GIVE BRAINLIST TO THE PERSON WHO GIVES ME THE CORRECT ANSWER
Three shipping companies want to compare the mean numbers of deliveries their drivers complete in a day.
The first two shipping companies provided their data from a sample of drivers in a table.
Company C showed its data in a dot plot.
Answer the questions to compare the mean number of deliveries for the three companies.
1. How many drivers did company C use in its sample?
Write your answer in the space below.
2. What is the MAD for company C's data? Show your work.
Write your answer in the space below.
3. Which company had the greatest mean number of deliveries?
Write your answer in the space below.
4. Compare the means for companies A and B. By how many times the MAD do their means differ? Show your work.
Write your answer in the space below.
Answer:
Step-by-step explanation:
1. 10
2.The mean is ten because 6 + 7 + 8 + 9 + 10 + 10 + 10 + 12 + 14 + 14 = 100/10. The (Mean) = 10
3. is A and B
Thats all i have still stuck on number 4 sorry
Find X pls thanks so much
Answer: X= 16.83 or 17 rounded
Step-by-step explanation:
Sin63 degrees= 15/x so to solve for x divide 15 by sin 63
[tex]\frac{15}{sin63}[/tex]=16.83
John can read 20 pages in 6 minutes. At this rate, how many pages can he read in 1 hours?
Answer:
200
Step-by-step explanation:
just do 6 times 10 because that will get you 60 min (1 hour)
then just do 10 x 20 as well for the pages
hi please help with my maths!
Answer: I need more to solve this
Step-by-step explanation:
Answer:
AB equals 4.535 (4.53478)
Zamir needs to determine the height of the building
What’s the Height “A”
What’s Height “B”
What’s the Height of “X”
PLEASE
Answer:
Height of the building = 115.4 ft.
Step-by-step explanation:
Height of building = AB + 46.4 + CD + 30.5
By applying Pythagoras theorem in ΔABP,
(26)² = (10)²+ (AB)²
676 - 100 = AB²
AB² = 576
AB = 24 ft
By applying sine rule in ΔCDE,
cos(60°) = [tex]\frac{CD}{CE}[/tex]
CD = CE × [tex]\frac{1}{2}[/tex]
CD = [tex]\frac{29}{2}[/tex]
CD = 14.5 ft
Total Height = 24 + 46.4 + 14.5 + 30.5
= 115.4 ft
Of 77 third graders, on Monday 3 were absent from Room 101, 4 were absent from Room 102, and 2 were absent from Room 103. How many third graders attended school that day?
Answer:
68
Step-by-step explanation:
Their are 77 total, 77-3= 74-4= 70-2= 68
The proper angle for a ladder is about 75 from the ground. Suppose you have a 6 foot ladder. How high
can it reach?
ht
Answer:
450
Step-by-step explanation:
75 x 6 is 450 so the answer is 450
hello please help I dont know how to do this
Answer:
3/1 aka 3 :) also cute izuku pfp!!!!
Step-by-step explanation:
NEED ASAP!!!
Find the area of the composite figure.
What is the value of the expression when a = -5 and c =-1? Enter your answer in the box.
Evaluate the following expression. log4 256
A. 64
B. 16 C. 4 D. 8
The simplified value of the expression [tex]log_4[/tex] 256 is 4.
Thus, option (C) is correct.
To evaluate the expression [tex]log_4[/tex] 256, determine the power to which 4 must be raised to obtain 256.
So, the equation can be set up
[tex]4^x[/tex] = 256.
Now, put the value of x one by one as
[tex]4^2 = 16[/tex]
[tex]4^3 = 64[/tex]
[tex]4^4 = 256[/tex]
Thus, when the number 4 raise to the power 4 it gives 256.
Thus, option (C) is correct.
Learn more about Exponents here:
https://brainly.com/question/5497425
#SPJ6
Find the value of x
A. 6
B. 9
C. 15
D. 3
Plz help I may mark Brainiest
Answer:
A. 6
Step-by-step explanation:
[tex]10x \degree + 30 \degree = 90 \degree \\(complementary \:angles) \\\\ 10x \degree = 90 \degree - 30 \degree\\ \\ 10x \degree = 60 \degree \\ \\ 10x = 60 \\ \\ x = \frac{60}{10} \\ \\ x = 6[/tex]
If 25% of an item is 20$, what is the original price?
I will give Brainliest
ASAP!!!
Answer:
I think that the original price would be $30, but I'm not completely sure.
Step-by-step explanation:
Half (50%) of 40 would be 20, and half of 20 (25%) would be 10. Add 10 to 20 to get 30, because you are adding the %25 back to $20.
Hope this helps!
Answer:
$80
Step-by-step explanation:
25% = 1/4
To get original price multiply by 4:
$20 × 4 = $80