Hello! I have done this test and the answer is!..... D: S=7
Have a great day!!!
The half-life of a radioactive substance is 200 years. There are 8000 grams of the substance initially. How many grams of the substance are left after 300 years?
Answer:
There are 2,000 grams left after 300 years.
Step-by-step explanation:
Giving the following information:
The half-life of a radioactive substance is 200 years. There are 8000 grams of the substance initially.
First, we need to calculate the reduction of the substance each year:
Yearly reduction= 8,000/400= 20 grams per year
Now, for 300 years:
300 year reduction= 20*300= 6,000
There are 2,000 grams left after 300 years.
Solve for x: (5 points) negative 3 over 2, multiplied by x minus 9 equals negative 27 a −24 b −12 c 11 d 12
Answer: b, 12
explanation: combine -3/2 * x and u get -3/2x. then isolate the variable by doing the inverse of subtraction on both sides. (add 9 on both sides). then do the inverse of multiplication on both sides. (divide by -3/2 on both sides)
When is subtraction always the first operation done in an expression?
Answer:
When it is in parentheses.
Step-by-step explanation:
In PEMDAS, first is always parentheses, no matter what operation.
If it is subtraction, do that first.
hope this helped!
Answer:
the 3rd one
Step-by-step explanation:
this is only true when it is in perenthisis because when you do PEDMAS you go in that order. P (perenthisis) beng first. so TECHNECLY perenthisis is first, but the first actual MATH PROBLEM being done is subtraction.
I NEEEDDDD HELP PLZZZZZZZZZZZZZZZZZZZZZZZZZ
The shorter diagonal of a rhombus measures 18cm. The side of the rhombus measures 41cm. Find the length of the longer diagonal.
Answer:
80 cm
Step-by-step explanation:
The diagonals divide the rhombus into four congruent triangles. The height of each triangle is 18/2 = 9, and the hypotenuse is 41. Using Pythagorean theorem, the width of each triangle is:
c² = a² + b²
41² = 9² + x²
x = 40
Therefore, the longer diagonal is 2×40 = 80.
please help asap question 9()
1 point
Find the slope of each line that passes through the points (4.0) and (7.9),
Answer:
[tex]m=3[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASAlgebra I
Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]Step-by-step explanation:
Step 1: Define
Point (4, 0)
Point (7, 9)
Step 2: Find slope m
Substitute: [tex]m=\frac{9-0}{7-4}[/tex]Subtract: [tex]m=\frac{9}{3}[/tex]Divide: [tex]m=3[/tex](03.01) Match the two numbers with their least common multiple (LCM). Match Term Definition 8 and 4 A) 24 8 and 6 B) 8 8 and 10 c) 40 Previous Question Question 1 (Not Answered)
Answer:
LCM of 8 and 4 = [tex]8[/tex]
LCM of 8 and 6 [tex]=24[/tex]
LCM of 8 and 10 = [tex]40[/tex]
Step-by-step explanation:
Least common multiple (LCM) of numbers is their smallest common multiple.
First find prime factorization of [tex]4,6,8,10[/tex]
[tex]4=2^2\\6=2(3)\\8=2^3\\10=2(5)[/tex]
LCM of 8 and 4 = [tex]2^3=8[/tex]
LCM of 8 and 6 [tex]=2^3(3)=8(3)=24[/tex]
LCM of 8 and 10 = [tex]2^3(5)=8(5)=40[/tex]
5
Select the correct answer.
Tom gets $12 off a box of chocolates that had an original price of $48. What percentage is the discount?
OA.
12%
OB.
25%
Ос.
50%
OD
60%
Reset
Next
Answer:
B
Step-by-step explanation:
12 is 1/4 of 48 so when you take $12 off $48 you take 1/4 of 25% away
What is the slope and y-intercept of the equation: y = -2/3x + 5
Answer:
-2/3 is slope and y-intercept is 5
Which expression can be used to represent the phrase “Maren increases the number of servings by six”? A. n-6 B. 6-n C. n+6 D. 6n HURRY PLEASE
Answer: C) n+6
Step-by-step explanation:
You’re increasing so it means you want to add and you must have a serving 6+ and the only one that’s increasing is C
Answer: c is n+6
Step-by-step explanation:
Find the equation of a line that has a slope of -3/7 and goes through the point (49,-17)
Monica and her parents spent $170 on new swimsuits. Monica’s swimsuit cost $35. Her mom’s swimsuit cost twice as much as Monica’s. How much did her dad’s swimsuit cost?
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▹ Answer
Her dad's swimsuit costs $65.
▹ Step-by-Step Explanation
Since Monica's swimsuit is $35, we will subtract that from the total amount spent, $170.
$170 - $35 = $135
Since Monica's mom's swimsuit costs 2x Monica's we will multiply 35 * 2:
$35* 2 = $70
We will now add Monica's cost and her moms' cost:
$35 + $70 = $105
To find Monica's dads' cost, we will subtract 105 from 170:
$170 - $105 = $65
Her dad's swimsuit costs $65.
Hope this helps!
CloutAnswers ❁
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Two system of equations 2y =14-2x and y=-x + 7 is graphed. What is the solution to the system of equations
To solve this system, we will use the graphing method.
Based on the graph shown below, we can conclude that this system has infinite solutions, because they are the same line.
Answer:
Infinitely many solutionsStep-by-step explanation:
Given equations
2y =14-2x and y= -x + 7Rewriting the first equation
2y = 14 - 2x2y = -2x + 14y = -x + 7As we see it is same as the second equation. So same two lines, overlapping when graphed and the system has infinitely many solutions
Carter's trampoline has a diameter of 10 ft. Its circumference is twice as great as the circumference of Reed's trampoline. What is the circumference of Reed's trampoline.
Answer:
no
Step-by-step explanation:
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Write the slope intercept form of the equation of each line plz
HELP PLZ
i need help with this math side i just need b,c,d a =4x+2y=16
Answer:
Please check the explanatio.
Step-by-step explanation:
Solving Part b)
We know that the slope-intercept form of the equation line is
[tex]y=mx+b[/tex]
where m is the slope and b is the y-intercept
Given the equation
[tex]4x+2y=16[/tex]
Re-writing the equation in the slope-intercept form
[tex]4x+2y=16[/tex]
[tex]y=-2x+8[/tex]
Here, m=-2 and b=8
Thus, the equation in the slope-intercept form will be:
[tex]y=-2x+8[/tex]
Solving Part c)
As you sold two pounds of cheddar cheese.
i.e. y=2
substituting y=2 in the slope-intercept form of the line equation
[tex]y=-2x+8[/tex]
[tex]2=-2x+8[/tex]
Subtract 8 from both sides
[tex]-2x+8-8=2-8[/tex]
[tex]-2x=-6[/tex]
Divide both sides by -2
[tex]\frac{-2x}{-2}=\frac{-6}{-2}[/tex]
[tex]x=3[/tex]
You sold 3 pounds of swiss cheese.
Solving Part d)
[tex]y=-2x+8[/tex]
putting x=2.5 in the equation
[tex]y=-2x+8[/tex]
[tex]2=-2\left(2.5\right)+8[/tex]
[tex]2=3[/tex]
The sides are not equal
FALSE
Thus, x=2.5 does not make any sense in the context of the problem.
POINTS AND POINTS AND POINTS. ANSWER ONLY IF U TOOK THE TEST ON K12 AND POST PICTURE OF CORRECT ANSWERS.
The coordinates of the vertices of quadrilateral ABCD are A(−1, −1), B(−3, 3), C(1, 5), and D(5, 2). Drag and drop the choices into each box to correctly complete the sentences. The slope of AB⎯⎯⎯⎯⎯ is Response area, the slope of BC⎯⎯⎯⎯⎯ is Response area, the slope of CD⎯⎯⎯⎯⎯⎯ is Response area, and the slope of AD⎯⎯⎯⎯⎯ is Response area. Quadrilateral ABCD is Response area because Response area.
Answer:
AB=-2
BC=1\2
CD=-3\4
AD=1\2
Step-by-step explanation:
The slope of AB is - 2,
Slope of BC is
Slope of CD is
Slope of AD is ,
ABCD is trapezoid because one pair of opposite sides is parallel.
Answer:
slope of AB: -2
slope of BC: 1/2
slope of CD: -3/4
slope of AD: 1/2
Quadrilateral ABCD is a trapezoid because there is one pair of parallel sides.
Step-by-step explanation:
I solved for the slopes using slope formula. Also, I determined that the quadrilateral was a trapezoid since there was at least one pair of parallel sides. I'm sorry that I don't have a k12 account, but I hope this helps.
The difference between two same side interior angles of two parallel lines is 35 degrees. Find the measures of these two angles.
Answer: 2x+43
Step-by-step explanation:
Answer:
107.5 degrees and 72.5 degrees (Don't forget the degrees symbol)
Please mark me Brainliest if I'm right :D
1.x(x+4)=5
2.(x+3)raise to 2=36
3.(t+2)raise to 2+(t-3)raise to2 =9
4.3 4
--+-- =x-1
x 2x
5. 3 4
-------+------- =x-1
m-2 m+5
how did you transform each equation into a quadratic equation what concepts or principles did you employ
x (x + 4) = 5
x² + 4x = 5
x²+ x + (-5) = 0
(x+3)²+(t+3)²=9
x² + 6x + 9 + t² + 6t + 9 = 9
x² + t² + 6x + 6t + 18 + (-9) = 0
x² + t² + 6x + 6t + 9 = 0
x² + t² + 6(x + t) + 9 = 0
3/x + 4/2x = x - 1
6/2x + 4/2x = x - 1
10/2x = x - 1
10 = (x - 1) 2x
10 = 2x² - 2x
0 = 2x² + (-2x) + (-10)
Mia went into a fair with $55.75 in her pocket. She bought a hot dog and drink for $2.975 each and then wanted to spend the rest of her money on rids tickets, which costs $0.95 each. Write an inequality to represent the total where r is the number of tickets purchased.
What is the maximum number of tickets mia can buy or purchesed_______?
Graphs how many rides tickets can mia buy without going over her budget.?
Answer: Maximum tickets she can buy is 52
Step-by-step explanation:
After she bought the fries and drinks she was left with $49.81. If she spent the rest of her money on rides/tickets for the rides then she bought 52 tickets to be exact. 0.95x52=49.40
12 movie tickets cost $36. At this rate, what is the cost per ticket?
Answer:
3
Step-by-step explanation:
36÷12=3
sooo EACH ticket is 3$ PER ticket
If you know why i got the point wrong for A and B please let me know right now i need it.
Thank you!
I’ll be giving extra points who ever explain it and has the answer correctly
Answer:
a.(-1,8), (2,9) b. (2,0) (3,5)
Step-by-step explanation:
a.
for (-4, 7) slope is [tex]\frac{1}{3}[/tex]
slope is m=rise /run =rise 1/run3 so to go to the next point
from (-4,7)
rise 1 so now you are at (-4,8) and run 3 and you are at (-1,8)
from (-1,8)
rise 1 to (-1, 9) and run 3 to (2,9)
b
(1,-5) slope is [tex]\frac{5}{1}[/tex]
from (1,-5) rise 5 to (1,0) and run 1 to (2,0)
from (2,0) rise 5 to (2,5) and run 1 to (3,5)
The sum of a number and its additive inverse is equal to _____.
Answer:
0
Step-by-step explanation:
0
Your boss asks you to design a Boolean circuit that verifies
Answer:
hello your question is incomplete attached below is the complete question
answer : attached below
Step-by-step explanation:
A) The given output would be : 1 for 0, 5,10,15 also the output will be = 0 for every other value
attached below is the truth function of the Boolean truth table
B) attached below is the Boolean expression
How do you do b and c?
Answer:
b) 18
c) 80.78
Step-by-step explanation:
While we can solve this equation with separation of variables, it isn't necessary. The coffee is originally at 95°, and the ambient temperature is 18°. The top right graph is the only one that shows this trend.
As t approaches infinity, y approaches the ambient temperature of 18°.
yₙ₊₁ = yₙ + Δt F(tₙ, yₙ)
yₙ₊₁ = yₙ + 2 (-0.02 (yₙ − 18))
yₙ₊₁ = yₙ − 0.04 (yₙ − 18)
yₙ₊₁ = 0.96 yₙ + 0.72
When n=0:
y₁ = 0.96 y₀ + 0.72
y₁ = 0.96 (95) + 0.72
y₁ = 91.92
When n=1:
y₂ = 0.96 y₁ + 0.72
y₂ = 0.96 (91.92) + 0.72
y₂ = 88.96
When n=2:
y₃ = 0.96 y₂ + 0.72
y₃ = 0.96 (88.96) + 0.72
y₃ = 86.12
When n=3:
y₄ = 0.96 y₃ + 0.72
y₄ = 0.96 (86.12) + 0.72
y₄ = 83.40
When n=4:
y₅ = 0.96 y₄ + 0.72
y₅ = 0.96 (83.40) + 0.72
y₅ = 80.78
2-b/3=-5/2
What is b?
Answer:
4
Step-by-step explanation:
just guessing hh oop sorry if its wrong
Which answer choice correctly represents the quotient of 28,134 divided by 441?
Due on a few minutes
Whoever answers it correctly I will give brainliest
A) 63 351/441
B) 65 131/441
C) 65 129/441
D) 441 63/351
Answer:
b
Step-by-step explanation:
___ x 2 = 30
12 divided by ___ = 4
Just a practice :)
15 x 2 = 30
12 ÷ 3 = 4
Have a wonderful day!
- Audrey :)
PLEASE HELP!! use the diagram shown. what is the length of GD?
Answer:
should be 8.
Step-by-step explanation:
As the picture shows, FG is 8. It also shows that FG and GD are congruent, so they are both equal to 8
one school purchased 18 gallons of blue paint to decorate several of its classrooms. if each classroom needs 1 4/5 gallons of paint, then how many classrooms will get painted.
Answer:
18 gallons of paint could paint 10 classrooms.
Step-by-step explanation:
Given that the school bought 18 gallons of paint, and that each classroom requires 1 4/5 of paint to be painted, to determine how many classrooms can be painted with that amount of paint, the following calculation must be performed:
4/5 = 0.8
1 + 0.8 = 1.8
18 / 1.8 = 10
Therefore, 18 gallons of paint could paint 10 classrooms.