Element X is a radioactive isotope such that every 25 years, its mass decreases by half. Given that the initial mass of a sample of Element X is 50 grams, how much of the element would remain after 23 years, to the nearest whole number?
Answer: 26
Step-by-step explanation:
The correct answer is 26
Lily wants to ride her bicycle 43 miles this week. She has already ridden 16 miles. If she rides for 6 more days, what is the average number of miles she would have to ride each day to meet her goal?
Answer:
43-16=miles left to go. divide that by the 6 days left.
43-16= 27 miles.
27÷6= 4.5 miles per day
Answer:
4 1/2 miles
Step-by-step explanation:
43 - 16 = 27 miles remaining
27/6 = 4 3/6 or 4 1/2
please hurry and answer
Answer:
20
Step-by-step explanation:
Kyala =x+24
ze=x
in 2 years=2 (x+24)=2x+48
x= 2x+48
x=48
48-28=20
I need help with a math question. Plz help will mark Brainliest. Here is the link to the math picture.Oh and Find the Value of X
Answer:
the correct answer is B. hope this helped
3. Seven teams are out on the field playing soccer. The teams all have the same number of players. The head coach asks for 2 players from each team to come help him move some equipment. Now there are 77 players on the field. Write and solve an equation whose solution is the number of players on each team.
Answer: equation: 7(x-2) = 77
answer: x=9
Step-by-step explanation:
homework help please I'll give you 10 points and brainliest
Answer:
c)
Step-by-step explanation:
Use 49 instead of 14 for 7²
Reason: 7² = 7 * 7 = 49
Not 14 as 7*2 = 14
The graph of g(x)=ax^2 opens downward and is narrower than the graph of f(x)=x^2. Which of the
following could be the value of a?
A. -3
B. -0.6
C. 0.5
D. 2
This symbol ^ means “to the power of” so example ^2 means to the power of 2.
this might be easy who knows
Answer:
w= -12
Step-by-step explanation:
hope this helps :)
Given △HJK and △RST, what is tan(T)? (help please
Answer:
C. 12/5
Step-by-step explanation:
∆HJK is similar to ∆RST, therefore, the their trigonometric ratios would be equal to each other.
There,
Tan T = Tan K
Tan K = opp/adj
Tan K = 12/5
Therefore,
Tan T = Tan K = 12/5
Tan K = 12/5
Someone please help me I’ll give out brainliest please don’t answer if you don’t know
Answer:
-2x
Step-by-step explanation:
-x + 1 - (1 + x)
-x + 1 -1 -x
-2x
Terme und Gleichungen in die Alltagssprache übersetzen
197
Was bedeutet dieser Term? Schreibe einen passenden Text dazu an.
a) 5•uDas Fünffache einer Zahl
b) z + 12
c) a : 2 - 4
d) i•9
2
e) 34 + 7•V
f) (p - 7)•3
Step-by-step explanation:
find the points of intersection of the parabola 4y squared + 8 y - 16 x equal to 12 in the line x equals to 3
it takes mike 18 minute to read 4 pages of a book how long does it take for him to finish read a 30 pages?
Answer:
135 minutes / "2 hr. and 15 minutes
Step-by-step explanation:
Helppppp plzzzz I will mark brainliestttt
Answer:
it's a. ctxr6irx5ixtxtcycyd TY ibis4dyhugbyrobut
You and a friend are each driving a car in opposite directions. You both leave your house at the same time. If you are traveling at “a” miles an hour and your friend is traveling at “b” miles an hour, make up a formula to show how far apart the two cars are after 5 hours. Let “Y” represent the total distance.
Please help i need the formula too
Answer:
y = a - b(5) i think that's it
Step-by-step explanation:
What value of x satisfies the equation below?
[tex]\frac{-2x - 6}{5} = 4[/tex]
Answer: -13
Step-by-step explanation:
1. Isolate x: move 5 to the otherside
=> -2x-6=4*5 => -2x-6=20
2. Move 6 to the otherside: -2x=20+6 => -2x=26
3. Divide both sides by -2
=> x=26/-2 => x=-13
Have a nice day! :D
PLEASE HELP ILL GIVE YOU BRAINIEST
How many lines of symmetry does the figure below have? If there are no lines of symmetry,
write none.
Onone
O8
O4
O 16
A)The function has two x-intercepts
B)The y-Intercept is at (0,7)
C)The maximum value is 1
D)The minimum value is 1
E) The range includes all real numbers
65 plus what two numbers will get me 180 ?
Answer:
So, to find the number we have to subtract 65 from 180 180-65 = 115 So 115 will be added to 65 to get 180.
what is the lcm of 6 and 8
Answer:
The LCM, or least common multiple, of 6 and 8 is 24.
Answer: 2
Step-by-step explanation:
First you find the multiples of 6 and 8 then you do this.
2x3
2x2x2x2x2x4
Then you circle the 2’s and so the lcm on 6 of six and 8 is 2.
Andre's phone is 11.5 cm long. How many millimeters is this?
Answer:
about 115 millimeters
Step-by-step explanation:
Pls help with the matching
solve for x
similar triangles advanced
Answer:
x = 2.57
Step-by-step explanation:
6/x = 7/3
7x = 18
x = 2.57
check:
if x = 2.57
then:
2.57/6 = 3/7
0.4283 = 0.4283
that checks as correct
Santosh spent $200, before tax, on a DVD player and DVDs. The player cost $120, new DVDs cost $15 and used DVDs cost $5. Santosh purchased the same number of new and uses DVDs. Write and solve an equation to find the number of each type of DVD Santosh purchased.
Answer:
Santosh purchased 4 new and 4 used DVDs.
Step-by-step explanation:
From the information given, as you know that Santosh spent $200 and that the DVD player cost $120, you can say that the new and used DVDs cost $80, which can be expressed as:
15x+5y=80, where:
x refers to the number of new DVDs
y refers to the number of used DVDs
Now, as the statement indicates that Santosh purchased the same number of new and used DVDs, this means that x is equal to y and you can replace y with x and solve for x:
15x+5x=80
20x=80
x=80/20
x=4
According to this, the answer is that Santosh purchased 4 new and 4 used DVDs.
Solve for x
-3/4(x+2)=6
X=?
Answer:
-10
Step-by-step explanation:
Find the LCM of 6 and 21
A. 126
B. 21
C. 42
D. None of the above
Answer:
42 is the correct answer
Answer:
C. 42
Step-by-step explanation:
6,12,18,24,30,36,42
21, 42
28. 18. 8. -2...
Find the 52nd term
Answer:
-290
Step-by-step explanation:
Just times -10 by 52
Combine like terms for the following expression:
-3x +14 - 11+ 11x
-25 – (-13) =
mathematics
If you are given 7x + 9, what does the expression equal if x = 8
Answer:
65
Step-by-step explanation:
Answer:
7x8+9
7x8=56
56+9=65
65
Step-by-step explanation:
I might be wrong
Sharlene wraps a cylindrical package that has a height of 15 inches and
a radius of 3 inches. What is the package’s surface area?
Answer:
339.3 cubic inches
Step-by-step explanation:
SA (cyl) = 2πr² + 2πrh
SA = 2(3²)π + 2(3)(15)π
SA = 18π + 90π
SA = 108π
SA ≈ 339.3 in³