Answer:
0. | 2
Step-by-step explanation:
I took (0.2) and made an equal sign and gave me 0. | 2
16. A radioactive isotope has a half-life of 13 hours. Find the amount of the isotope left from a 400-milligram
sample after 65 hours. If necessary, round your answer to the nearest thousandth.
a. 25 mg
c. 0.049 mg
b. 7.692 mg
d. 12.5 mg
Please help. I only see answers for 52 hours
Answer:
Without the math: 65 hours is 5 half-lives
13 hrs = 1/2
26 hrs = 1/4
39 hrs = 1/8
65 hrs = 1/32
(1/2)^5 = 1/32
400 mg / 32 = 12.5 mg that is, after 5 half-lives
A young lady started working at In N Out Burger:
Hours worked Income
17 $221
22 $286
31 $403
6)What is the hourly rate?
7)What is the equation? An equation in this situation has an =, 2 variables (letters) and 1 number.
8)What is the constant of proportionality?
9) Use a proportion with words and numbers to determine how many hours this person would have to work to have an income of $1000.
Plz solve correctly and solve all questions you will get 24 points plus brainliest.
Answer:
Step-by-step explanation:
6. 13/hour
7. R=income/hours worked so 221/17=13. Not sure if that is what they are asking for.
8. Not sure. Is it $13/hour?
9. still guessing but the constant is $13/hour so to determine how many hours need to be worked to reach $1000, you divide. $1000/13=Approximately 77 hours.
If cos A= -4/5 and A is in the second quadrant, then cos 2A = ?
Answer:
i think its second pythagreom therom
Step-by-step explanation:
because
(Help me please!) What are the 2 closest integers to 0.001 (if you say 0.000 and 0.002, just telling you its wrong I tried, anyways, PLS HELP!)
Answer:
1 and 0
Step-by-step explanation:
Zero is an integer
drag each one to the correct set
8. The soccer ball has a diameter of 9 inches. Find its volume.
Answer:
You do need to be more specific, the volume of a sphere is V = 4/3 π r^3, it does not need to be related to a cylinder. So if you know the radius, you can calculate the volume. The volume of a cylinder with the same radius and with a height of 2r (since it would be the diameter across) would be V = π r^2 h = 2π r^3.
Step-by-step explanation:
Determine if the side lengths listed create a right triangle, acute triangle, obtuse triangle, or do not make a triangle. 3, 9, 10 Determina si las longitudes de los lados enumeradas crean un triángulo rectángulo, un triángulo agudo, un triángulo obtuso o no forman un triángulo. 3, 9, 10 * 1 point right acute obtuse not a triangle
Answer:
Obtuse triangle
Step-by-step explanation:
Given the side lengths :
3, 9, 10
Let :
a = 3 ; b = 9 ; c = 10 (longest side)
If a² + b² = c² (right angle)
If a² + b² > c² (acute angle)
If a² + b² < c² (obtuse angle)
a² + b²
3² + 9²
9 + 81 = 90
c² = 10² = 100
90 < 100
Hence,
a² + b² < c² (then we have an obtuse triangle)
what is forty five plus ninety
Answer:
=135
Step-by-step explanation:
45+90
=45+90
=135
is ib in canada hard?
Answer:
yes because Canada is american country
There are 15 pieces of fruit in a bowl and 40% of them are apples.
How many of the pieces of fruit in the bowl are apples?
Answer:
six out of the fifteen are apples
Mrs. Drilon’s electric meter reading last month was 1023, and her present electric meter reading is 1053. What is her electric consumption?
Answer:
30
Step-by-step explanation:
Subtract the 1023 reading from the 1053 one:
1053
-1023
---------
30
Her electric consumption was 30.
Which reflection will produce an image of ARST with a
vertex at (2, -3)?
O a reflection of ARST across the x-axis
O a reflection of ARST across the y-axis
O a reflection of ARST across the line y = x
O a reflection of ARST across the line y=-x
Answer: D- a reflection of ^RST across the line y=-x
Step-by-step explanation:
The solution is, O a reflection of RST across the line y=-x, is the reflection which will produce an image of RST with a vertex at (2, -3).
What is reflection?Reflection is a type of transformation that flips a shape in a mirror line (also called a line of reflection) so that each point is the same distance from the mirror line as its reflected point.
here, we have,
from the given figure,
we get,
Triangle RST has,
vertex R ( -1,3)
vertex S ( 3, -2)
vertex t (1, -4)
now we know that,
the rule of a reflection across the line y=-x,
(x, y) ⇒ (-x, -y)
so, we get, here,
vertex S ( 3, -2) ⇒ vertex at (2, -3)
so, there is O a reflection of RST across the line y=-x.
To learn more on reflection click:
https://brainly.com/question/29003769
#SPJ7
There are 240 calories in 5 ounces of a type of ice cream. How many calories are in 8 ounces of that ice cream?
Answer:
384 calories in 8 ounces of that ice cream
Step-by-step explanation:
240/5= 48
1 ounze of ice cream has 48 calories
48x8= 384
7th grade math help me pleaseeee
Answer:
i think it is 32
Step-by-step explanation:
because 44 - 12 = 32 and if you do 32 + 12 you get 32 soo ya hope that helps
Answer:
so she needs 32
Step-by-step explanation:
X=how much more money Ginny needs to buy the sneakers
So you do:
Subtract 12 on both sides of the equation
X+12=44
-12 -12
X= 32
have a good day/night
may i please have a branlliest
What is the measure of angle Q?
Answer:
hi
Step-by-step explanation:
x⁰+(x+90)⁰+(x-18)⁰=180⁰
3x+72=180
3x=180-72
3x=108
x=36
Q is equal to x+90=36+90=126
For cheking answer:
R is 36
Q is 126
P is 18
36⁰+126⁰+18⁰=180⁰
hope it helps
have a nice day
Answer:
[tex]x=96[/tex]
Step-by-step explanation:
[tex]360=x+\left(x+90\right)+\left(x-18\right)[/tex]
Step 1: Simplify both sides of the equation.
[tex]360=x+x+90+x-18[/tex]
[tex]360=(x+x+x)+(90+-18)[/tex] (Combine Like Terms)
[tex]360=3x+72[/tex]
Step 2: Flip the equation.
[tex]3x+72=360[/tex]
Step 3: Subtract 72 from both sides.
[tex]3x+72-72=360-72[/tex]
[tex]3x=288[/tex]
Step 4: Divide both sides by 3.
[tex]\frac{3x}{3}=\frac{28}{3}[/tex]
[tex]x=96[/tex]
Hope this helped! :)
On Saturday 4 groups of people went to the restaurant at the ski resort. Each group had 5 people in it. Everyone ordered a cup of hot chocolate. Rebecca,Malaki,and Jeffery each ordered an extra cups of hot chocolate.how many many cups of chocolate did the people drink that day?
Answer:
23
Step-by-step explanation:
total number of people at the restaurant = number of groups x total number of people in the groups
4 x 5 = 20
20 people ordered hot chocolate
3 people ordered an extra cup of hot chocolate.
The total number of hot chocolate ordered = 20 + 3 = 23
Find the are of the blue shaded region.
XTRA POINTS!!!
Plus brainliest!!!
No links or anything i will report you!!!!!
PLZ!!!!
Answer:
25π
Step-by-step explanation:
i hope u hav a gud day ^_^
Answer:
area = 73.37 cm²
Step-by-step explanation:
area of circle:
A = π5² = 78.5 cm²
area of 80° segment:
(80/360)(78.5) = 17.44 cm²
area of isosceles triangle w/ 5 cm legs and 80° angle:
sin 40° = b/5
0.6428 = b/5
b = 3.214
base = 2(3.21) = 6.43 (we only figured for one-half of the base)
cos 40° = h/5
0.7660 = h/5
height = 3.83
A = 1/2(6.43)(3.83) = 12.31 cm²
area of unshaded part:
17.44 - 12.31 = 5.13 cm²
area of total shaded part:
78.5 - 5.13 = 73.37 cm²
I feel like everyone on this app has just given up, because no one has been helping me with any of my math stuff. And it's just like a ghost town here
Answer:
i see how you feel but ._. i just aint good at math shawty
Step-by-step explanation:
solve for c
-38+-75c≥37
Amy spent $90 at the store. She spent 1/3 of her money on food, 1/6 of her money on school supplies, and 1/9 of her money on soda. How much did she spend on school supplies?
Given:
Amy spent $90 at the store.
She spent [tex]\dfrac{1}{3}[/tex] of her money on food, [tex]\dfrac{1}{6}[/tex] of her money on school supplies, and [tex]\dfrac{1}{9}[/tex] of her money on soda.
To find:
How much did she spend on school supplies?
Solution:
According to the given information, Amy spend [tex]\dfrac{1}{6}[/tex] of her money on school supplies.
Amy spent $90 at the store. So,
Money spend on school supplies = [tex]\dfrac{1}{6}\times 90[/tex]
= [tex]15[/tex]
Therefore, Amy spend $15 on school supplies.
if you’re standing on the street 1,300 feet from the bottom of the building, you have to look up at a 23 degree angle to see the top. How tall is the building ? explain or show your reasoning.
Answer:
551.82feet tall
Step-by-step explanation:
WE are given the following from the question;
Distance of me from the bottom of the building = 1300feet (adjacent)
Angle of elevation = 23 degrees
Required
Height (opposite)
Using the SOH CAH TOA identity
Tan theta = opp/adj
Tan 23 = H/1300
H = 1300tan23
H = 1300(0.4245)
H = 551.82feet
Hence the building is 551.82feet tall
Math question plz help
y=5x-3 I think so.....
Ian is borrowing $1000 from his parents to buy a notebook computer. He plans to pay them back at the rate of $60
per month. Ken is borrowing $600 from his parents to purchase a snowboard. He plans to pay his parents back at
the rate of $20 per month. a) Write an equation that can be used to determine after how many months the boys will owe the same amount.
b) Determine algebraically and state in how many months the two boys will owe the same amount. State the
amount they will owe at this time.
c) Ian claims that he will have his loan paid off 6 months after he and Ken owe the same amount. Determine and
state if Ian is correct. Explain your reasoning.
A = 10 months
B = First part, the two equations:
Ian: y = 1000 - 60x, where x is the number of months and y is the remaining balance owed.
Ken: y = 600 - 20x.
They will be equal at 1000 - 60x = 600 - 20x
Second part: Solve the equation. Note, if you're equation is incorrect, solve it anyway because you will still get some credit!
1000 - 60x = 600 - 20x
1000 = 600 + 40x
400 = 40x
x = 10 months
y = 600 - 20(10) = 600 - 200 = $400 still owed.
C =
Solve Ian's equation for y = 0, when no money is owed.
1000 - 60x = 0
1000 = 60x
x = 16.66666.... or 17 months.
Ian will not be paid off 6 months after he and Ken owe the same amount. He will still owe money.
Alternatively, six months after 10 is 16 months,
and y = 1000 - 60(16) = 1000 - 960 = 40. He will still owe $40 at 16 months, so he is not paid off.
PLEASE HELP! QUICKLY!!!
I’m not sure how to go about solving this. Could somebody help?
Answer:
2.83
Step-by-step explanation:
Can I have Brainliest?
Answer:
If you see the little square on the side maybe try to measure it and keep putting it on top and see how many of then till the top. (if you knwo what i mean )
Step-by-step explanation:
I am SUPER sorry if you get it wrong :(
What is the volume of the rectangular prism?
Rectangular prism is also called cuboid.
Given :Length = 3 feetBreadth = 6 feetHeight = 2 feetTo calculate :Volume of the rectangular prism.Calculations :Formula :
[tex]\bigstar \: \boxed{\sf {Volume_{(Cuboid)} = \ell \times b \times h}} \\ [/tex]
[tex] \longmapsto [/tex] Volume = (3 × 6 × 2) feet[tex]\sf ^3 [/tex]
[tex] \longmapsto [/tex] Volume = (18 × 2) feet[tex]\sf ^3 [/tex]
[tex] \longmapsto [/tex] Volume = 36 feet[tex]\sf ^3 [/tex]
Therefore,
Volume of the rectangular prism is 36 feet[tex]\sf ^3 [/tex].Seth wants to buy a helmet as well. A new helmet costs
$46.50. Seth thinks he can work 6 hours on Saturday to
earn enough money to buy the helmet. Is he correct?
Find the value of each variable. Assume it is a 45 45 90 triangle. Round to the nearest tenth.
Answer:
x = 6
y = 45 degrees
Step-by-step explanation:
Here, we want to get the measure of x and y
For a 45-45-90 triangle, the measure of each of the internal angle asides the right angle is 45 degrees
This mean y is 45
To get x, we know we have an isosceles triangle
So the length of the third ungiven leg is x too
Mathematically, the square of the hypotenuse (side facing the right angle) is equal the sum of the squares of the two other sides
(6 √2)^2 = x^2 + x^2
72 = 2x^2
x^2 = 72/2
x^2 = 36
x = √36
x = 6
What is the slope of the graph of y= 12x-19?
Answer:
12
Step-by-step explanation:
Hi,
in the equation y = mx + b...
M is your slope.
So, 12 is your slope.
I hope this helps :)
Answer:
12/1
Step-by-step explanation:
because te equation is in y=mx+b form in which m is the slope
Correct Answer Gets Brainleist + 15 points. (Please Help..)
Answer:
You need to divide by the cost of children and adults by their per cost to total
Compare investing $1500 at 9% compounded monthly for 11 years with investing $1500 at 14% compounded monthly for 11 years.
Answer:
Final amount after 11 years = $4021.97
Step-by-step explanation:
We will use the formula to get the final amount after t years,
Final amount = [tex]a(1+\frac{r}{n})^{nt}[/tex]
here a = Initial amount
r = Rate of interest
n = Number of compounding in a year
For Initial amount 'a' = $1500
r = 9%
t = 11 years
n = 12 [Compounded monthly]
F = [tex]1500(1+\frac{9}{12})^{12\times 11}[/tex]
= $4021.97