Answer:
2x-9y=-51
2x-3y=-9
subtract question ii from i we get
-6y = -42
y =7
put value of y in 1
2x - 63 = -51
2x= 8
x=4
Randy is four times as old as Kenneth and Randy is 36 years older than Kenneth
i) How old is Kenneth?
ii) How old is Randy?
Answer:
Kenneth: 12 years old
Randy: 48 years old
Step-by-step explanation:
For this problem, we can use system of equations to solve. Let's use r for Randy and k for Kenneth.
Equation 1
r=4k
This equation comes from the first part, where Randy is four times as old as Kenneth.
Equation 2
r=36+k
This equation comes from the second part, where Randy is 36 years older than Kenneth.
Since we have r=, we can use substitution method.
4k=36+k [subtract both sides by k]
3k=36 [divide both sides by 3]
k=12
Now that we have found k, we can plug that into any equation to find r.
r=4(12) [multiply]
r=48
Now, we know that Randy is 48 years old and Kenneth is 12 years old.
which answer is it ????
Answer: it is option 2 person
Step-by-step explanation:
What is 79.7 rounded to the nearest ten?
Answer:
80
Step-by-step explanation:
Help ASAP pls
Three cars are for sale car a £14240 or car b £15870 or car c £11690 The price of car is rounded to the nearest £100. Which price changes by the greatest amount
Answer:
1 st car is your answer to the question
For each question, draw a figure. Label the information on the figure. Write an equation that solves the
problem. Find the two answers requested. On AC, B is between A and C. For each question, find x and AB.
10. AB = 2x + 5, AC= 10x + 2. BC= 4x + 9.
11. AB = 3x, BC =x-6, AC = 8x - 14
Answer:
See attachment for the figures drawn for each question.
10. x = 3; AB = 11
11. x = 2; AB = 6
Step-by-step explanation:
10. AC = 10x + 2
AB = 2x + 5
BC = 4x + 9
AB + BC = AC (segment addition postulate)
(2x + 5) + (4x + 9) = 10x + 2 (substitution)
The equation above is what we would use to solve the problem as follows:
2x + 5 + 4x + 9 = 10x + 2
Combine like terms
6x + 14 = 10x + 2
6x - 10x = -14 + 2
-4x = -12
Divide both sides by -4
x = 3
AB = 2x + 5
Plug in the value of x
AB = 2(3) + 5 = 6 + 5
AB = 11
11. AB = 3x
BC = x - 6
AC = 8x - 14
AB + BC = AC (segment addition theorem)
3x + (x - 6) = 8x - 14 (substitution)
Use the equation to solve for x as follows:
3x + x - 6 = 8x - 14
Collect like terms
4x - 6 = 8x - 14
4x - 8x = 6 - 14
-4x = -8
x = 2 (dividing both sides by -4)
AB = 3x
AB = 3(2)
AB = 6
Solve 3x - x + 2 = 12.
O 1) – 5
O 2) 4
0 3 7
4) 5
Answer:
4) 5
Step-by-step explanation:
3x-x+2=12
First, you combine similar terms, so 3x-x which is 2x.
Second, you subtract 2 on both sides which is going to give you 2x=10.
Finally, you divide by 2 on both sides, so the final answer is going to be x=5.
helppp first to answer gets brainlist
Answer:
j
Step-by-step explanation:
Write the equation g(x) of the transformation of the parent graph f(x) = |x| reflected over the x axis.
Answer:
g(x) = -|x|
Step-by-step explanation:
f(x) = |x|
y = −f(x) Reflects it about x-axis
g(x) = -|x|
We start off with: f(x) = |x|
Reflection across x-axis
y = -f(x)
After: g(x) = -|x|
Best of Luck!
Solve the equation
|-2y+5|=2|4y-1|
I need help fast please, thanks
Answer:
|-2y+5|=2|4y-1|
-2y+5=8y-2
-2y-8y=-2-5
-10y=-7
y=7/10
Step-by-step explanation:
Which list contains three equivalent fractions for 2/5
Answer:
the answer would be
B.) 4/10 6/15 8/20
hope that helps
Rectangle PQRS will be reflected over the y-axis. What will be the coordinates of Q'M
Answer:
Coordinates for Q' Option (A) : (-5, 2)
If a customer or five items in the order had a total of 17 wheels how many wagons were ordered show your work and explain your answer
Together a refrigerator and a desk cost $216. Find the price of each if the refrigerator costs three times as much as the desk
Refrigerator 162$ and desk cost 54
Step-by-step explanation:
Cost of refrigerator and desk =$2163x+x=2164x=216x=216/4x=54now, Cost of refrigerator = 3x = 3*54 = 162Is 4 - 4x and 4(1 - x) equivalent expressions? Why or why not?
Hey there!
ANSWER:Yes
EXPLANATION:Is 4 - 4x and 4(1 - x) equivalent expressions? Why or why not?
If you want to know whether they are equivalent, let's first find the value of both of them.
[tex]4-4x[/tex]
[tex]-4x+4[/tex]
[tex]4(1-x)[/tex]
Let's add parenthesis to 4 and (1-x) and add negative to x.
[tex](4)(1+-x)[/tex]
Now separate all with parenthesis.
[tex](4)(1)+(4)(-x)=4-4x\\-4x+4(ANSWER)[/tex]
Since both had the same value, they are equivalent.
Hope this helps!
[tex]\text {-TestedHyperr}[/tex]
2. What properties do you notice in the right triangle
Answer:
It has three sides
Step-by-step explanation:
Common sense
Answer:
The properties in a right triangle include
-one 90 degree angle
-the two angles that are not the right angle (90 degree angle) will always be acute angles
-the hypotenuse can easily be found by using the Pythagorean Theorem (a squared plus b squared equals c squared
-it has three sides
-it has three angles
What are the coordinates of point S?
Answer:
The coordinates of S is (-2,2)
find the percent increase from 200 to 240
Answer:
20%
Step-by-step explanation:
The percentage change can be found from ...
% change = ((new value)/(reference value) -1) × 100%
= (240/200 -1) × 100%
= 0.20 × 100%
= 20%
240 is an increase of 20% from 200.
i need help w qn 32,, thankyou
Answer:
a) 9.62m (3 s.f.)
b) 2.58m (3 s.f.)
Step-by-step explanation:
Please see attached picture for full solution.
The Moon is 4,530,000,000 years in scientific notation
Answer:
4.53 * 10⁹
Step-by-step explanation:
4530000000 = 4.53 * 10⁹
Which equation is in standard form?
A. -3(x + y) = 10
B. y = 4x + 2
C. 5x –y = 15
D. 0.5x + 6y = 1.9
Which relation represents a function?
Answer:
{ (-2,2) , (0,2) , (7,2) , (11,2) }
Step-by-step explanation:
Your x variable cannot repeat.
Evaluate 5|7 - 9| - 2.
o2
o8
o1
o0
FIRST ONE TO ANSWER GETS BRAIN LISTED!
Answer:
8
Step-by-step explanation:
Do |7 - 9| first, and you get -2, however since it is absolute value, you use the positive version, making it two. Now you have 5|2|-2. Multiply 5*2=10. Then subtract 2.
Please help me this is due in 20min please!!! i’m suppoes to make a graph of that... please someone.
Answer:
im assuming this is what you mean considering the little information given.
Step-by-step explanation:
WHATS THE VALUE OF C?? 10 minutes!!
Solve.
1) (-85) ÷ 20 =
2] 100 ÷ 60 =
[tex] - 85 \div 20 = - 4 \frac{1}{4} = - 4.25[/tex]
[tex]100 \div 60 = \frac{5}{3} = 1 \frac{2}{3} [/tex]
-3xy = what when x=11 and y =-4?
Answer:
132
Step-by-step explanation:
-3xy
x=11 and y = -4
= -3 *11*-4
-33 * -4
132
If x = 11 and y = -4
-3xy = -3 × 11 × -4
= -3 × -44
= 132.... Hope this will help....
Please solve for X get it done ASAP, please.
Answer:
x=150
Step-by-step explanation:
40+(x-20)+(x-10)+1/3x=360 add all like terms
x=150
Elizabeth claims that the only square root of 36 is 6. Which statement below disproves Elizabeth’s claim?
Answer:
The square root of a positive number can be a negative or positive value.
Step-by-step explanation:
Find the degree.
18x^4 y2 + 2x^5
Answer:
answer is 5
Step-by-step explanation:
I used a calculator
I need help! I don't know how to do this