Question 9:
Given the equations
[tex]5x+2y=6;[/tex]
[tex]4x-8y=0[/tex]
solving the system of the equations
[tex]\begin{bmatrix}5x+2y=6\\ 4x-8y=0\end{bmatrix}[/tex]
[tex]\mathrm{Multiply\:}5x+2y=6\mathrm{\:by\:}4\:\mathrm{:}\:\quad \:20x+8y=24[/tex]
[tex]\mathrm{Multiply\:}4x-8y=0\mathrm{\:by\:}5\:\mathrm{:}\:\quad \:20x-40y=0[/tex]
[tex]\begin{bmatrix}20x+8y=24\\ 20x-40y=0\end{bmatrix}[/tex]
[tex]20x-40y=0[/tex]
[tex]-[/tex]
[tex]\underline{20x+8y=24}[/tex]
[tex]-48y=-24[/tex]
[tex]\begin{bmatrix}20x+8y=24\\ -48y=-24\end{bmatrix}[/tex]
[tex]-48y=-24[/tex]
[tex]\frac{-48y}{-48}=\frac{-24}{-48}[/tex]
[tex]y=\frac{1}{2}[/tex]
[tex]y = 0.5[/tex] ( 0.5 is the result of rounding 0.5 to the nearest 0.01)
[tex]\mathrm{For\:}20x+8y=24\mathrm{\:plug\:in\:}y=\frac{1}{2}[/tex]
[tex]20x+8\cdot \frac{1}{2}=24[/tex]
[tex]20x+4=24[/tex]
[tex]\frac{20x}{20}=\frac{20}{20}[/tex]
[tex]x=1.00[/tex] ( 1.00 is the result of rounding 1 to the nearest 0.01 )
So, the solution is:
(x, y) → (1.00, 0.5)
Question 10)
Similarly the question 10 can be solved.
Given the equations
[tex]5x+2y=9;\:4x-3y=44[/tex]
solving
[tex]\begin{bmatrix}5x+2y=9\\ 4x-3y=44\end{bmatrix}[/tex]
[tex]\mathrm{Multiply\:}5x+2y=9\mathrm{\:by\:}4\:\mathrm{:}\:\quad \:20x+8y=36[/tex]
[tex]\mathrm{Multiply\:}4x-3y=44\mathrm{\:by\:}5\:\mathrm{:}\:\quad \:20x-15y=220[/tex]
[tex]\begin{bmatrix}20x+8y=36\\ 20x-15y=220\end{bmatrix}[/tex]
[tex]20x-15y=220[/tex]
[tex]-[/tex]
[tex]\underline{20x+8y=36}[/tex]
[tex]-23y=184[/tex]
[tex]\begin{bmatrix}20x+8y=36\\ -23y=184\end{bmatrix}[/tex]
[tex]-23y=184[/tex]
[tex]y=-8.00[/tex] ( -8.00 Rounded to the nearest 0.01 or the Hundredths Place )
[tex]\mathrm{For\:}20x+8y=36\mathrm{\:plug\:in\:}y=-8[/tex]
[tex]20x+8\left(-8\right)=36[/tex]
[tex]20x=100[/tex]
[tex]x=5.00[/tex] ( 5.00 Rounded to the nearest 0.01 or the Hundredths Place )
So, the solution is:
(x, y) → (5.00, -8.00)
What is 50% of a dollar
HELP ME FAST
Answer:
50 cents
(⓿_⓿)
130-y=224
solve for y
Answer:
Y = -94
Step-by-step explanation:
130 - y = 224 -subtarct 130
-y = 94 -multiply by -1
y = -94
Hope this helps. Pls give brainliest.
Answer:
y = -94
Step-by-step explanation:
130 - y = 224
subtract 130 from both sides
130 - 130 - y = 224 - 130
-y = 94
u want y not -y so divide both sides with "-"
y = -94
What is the slope of the line perpendicular to the line represented by the equation y = 4x - 7? *
a)-1/4
b)-7
c) 4
d)-4
Answer: im kinda losing brain cells rn
Step-by-step explanation:
Answer:
Step-by-step explanation:
c
x^2+ 5x – 6.
A.)(x-1)(x+6)
B.)(x+1)(x-6)
C.)(X-2)(x-3)
D.)(x-2)(x*3)
Answer:
A bruh
Step-by-step explanation:
trust the process
Please help me really quick! :DD
Answer:
Correct equation: 4b^2 -b-138= 0
Solution: 6 meters
Step-by-step explanation:
The base has to be 6, and that’s the equation that works with that number.
HELPPP FASTTT PLEASEEEEEEEEEE
A number minus seven is nine.
Answer:
Your answer would be 16 - 7 = 9.
You can simply add the two numbers and it would still give you the same answer, but I decided to just look for the number.
Step-by-step explanation:
I hope this helped solve your question.
df/ dt = lim f( t + h ) - f(t)
______________
h
Answer:
boi
Step-by-step explanation:
Alexandro received two quotes for new carpet for his home. The quote from Home Depot is $0.20 less per square foot than the quote from Lowe's. If Alexandro plans to buy 1,300 square feet of carpet, how do his total costs from the two companies compare? *
Answer:
Total cost as per Lowe's is $260 more than that of Home Depot.
Step-by-step explanation:
Given that:
Alexandro received two quotes for new carpet.
One from Home Depot and other from Lowe's.
Let quote from Home Depot = [tex]\$x[/tex] per sq foot
As per question statement,
The quote from Lowe's = [tex]\$x[/tex]+0.20 per sq foot
Alexandro plans to buy 1,300 square feet of carpet.
Total Cost as per Home Depot's quote = [tex]\$1300x[/tex]
Total Cost as per Lowe's = [tex]\$(x+0.20)\times 1300 = \$1300x + \$260[/tex]
Now taking the difference of the total cost:
Lowe's total cost - Total cost as per Home Depot.
[tex]\$1300x+\$260 - \$1300x \\\Rightarrow \$260[/tex]
So, the answer is:
Total cost as per Lowe's is $260 more than that of Home Depot.
Jessica earns 2,000 per month as a saleswomen. In addition to the salary she earns 80 per product that she sells. If her goal is to earn 10,000 per month, how many products does she need to sell
Answer:
100 products
Step-by-step explanation:
Jessica earns 2,000 per month as a sales woman
In addition to the salary she earns 80 per product that she sells
Her goal is to earn 10,000 per month
Therefore the number of products that will be sold to attain 10,000 can be calculated as follows
= 80×100
= 8,000
= 8,000+2,000= 10,000
Hence she needs to sells 100 products to attain 10,000
2x+5=17 I need help :(((((((
Answer:
the answer is 6
Step-by-step explanation:
the first thing you need to do is take 5 away from 17 to get 12 2x=12 then you need to divide 2 from both
On a map, a city block is a square with three vertices at (-4,1), (1,1), and (1,-4). What are the remaining coordinates of the remaining vertex ?
Answer:
(-4, -4)
Step-by-step explanation:
Use a table, an equation, and a graph to represent the relationship below.
Ty is 6 years younger than Bea.
Answer:
UkwkwkwStep-by-step explanation:
Answer:
b-6=t
Step-by-step explanation:
What is the solution to the equation 6x - 5 =15
X = 5/6
X = 5/3
X = 10/3
I don’t know
Plz I need this
Answer:
x=10/3
Step-by-step explanation:
step 1: add five to both sides to get rid of the -5.
step 2: divide 6 on both sides to isolate the variable
step 3: simplify 20/6 by finding the greatest common factor which is 2.
Answer:
5/3
Step-by-step explanation:
I believe it's the answer because 15 minus 5 is 10 and if you divide it its 3 over 5 but its switched here so your answer is 5/3
Does anyone know how to do part b?
Answer:
No
’
Step-by-step explanation:
Examine the following table of points, which are all on a certain line.
x y
−2 4
0 2
1 1
3 −1
What is the slope of this line?
Enter your answer as a number, like this: 42
Or, if the slope is undefined, enter a lowercase letter "u," like this: u
9514 1404 393
Answer:
-1
Step-by-step explanation:
The slope formula is useful:
m = (y2 -y1)/(x2 -x1)
m = (2 -4)/(0 -(-2)) = -2/2 = -1
The slope of this line is -1.
_____
The points on the line drop 1 unit for each 1 unit to the right.
m = rise/run = -1/1 = -1
WILL GIVE BRAINLIEST write an equation for the nth term of the sentence and find the 91st term -2,3,8,13,...
Answer:
y=X+5?
Step-by-step explanation:
This is a hard one but this may be correct
Can someone help me with those and explain please. Ill give brainlist
Answer:
1. 23x/10
2. 13x/10
Step-by-step explanation:
explanation: find the common denominator and then go from there. i suck at in depth explanations but as long as you get the gist of it youre good
Maria got 50% of the questions correct on her science test. If she got 32 questions correct, how
many questions were on the exam?
Answer:
64
Step-by-step explanation:
:)
Answer:
64 Questions
Step-by-step explanation
50% x 2 = 100%
32 x 2 = 64
How many times greater is the 6 in the thousands place than the 6 in the hundreds place
Robert has been riding his bike at a constant speed for the last 35 minutes. If Robert is traveling at a speed of 9 miles per hour, which equation best represents this relationship between the time in hours, t, and the distance in miles, d?
Answer:
A
Step-by-step explanation:
I looked it up
Please help asap.xxx
Answer:
3,4
Step-by-step explanation:
(3,4)
Step-by-step explanation:
if the solutions of p(x)=0 are -14 and 11, which function could be p?
(A) p(x)=x^2-3x-154
(B) p(x)=x^2-14x+11
(C) p(x)=x^2+14x+11
(D) p(x)=x^2+3x-154
Answer:d
Step-by-step explanation:
The required function is [tex]P(x)=x^2+3x+154[/tex]. So, option D is correct.
Important information:
The solutions of [tex]p(x)=0[/tex] are [tex]-14[/tex] and 11.We need to find the function p(x).
Function:If [tex]x=c[/tex] is a solution of [tex]p(x)=0[/tex], then [tex](x-c)[/tex] is a factor of p(x).
It means [tex](x+14)[/tex] and [tex](x-11)[/tex] are two factor of p(x).
[tex]P(x)=(x+14)(x-11)[/tex]
[tex]P(x)=x^2-11x+14x+154[/tex]
[tex]P(x)=x^2+3x+154[/tex]
Therefore, the correct option is D.
Find out more about 'Function' here:
https://brainly.com/question/19446232
Can someone help me with this question it’s 7.55 x 4.5
Answer:
33.975
Step-by-step explanation:
what is tan 30 degrees?
look at photo
i’ll give brainliest
on piece of paper,graph the system of equatons. Then determine which answer choice matches the graph you drew and indetify the solution to the system y=2x-1 y= -x+5
Answer:
Idisisisos9191929929293938kdidif8c8c8c87c7c7c7c7c
An airline knows that 9 out 50 passengers who book a flight do not show up. If 300 people booked a flight , how many will not show up?
A) 45 passengers
B) 54 passengers
C) 100 passengers
D) 27 passengers
Answer:
300 divided by 50 is 6. 6 x 9 is 54. your answer is B)54
Step-by-step explanation:
(-3,3)
y
1
(12, -3)
What is the slope of the line shown?
Answer:USE GOOGLE
Step-by-step explanation:
I USE IT EVERY DAY
Answer:
7/5
Step-by-step explanation:
*******************
(3,-1) slope= 2 what is the equation?
Answer:
y = 2x - 7
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Here m = 2, thus
y = 2x + c ← is the partial equation
To find c substitute (3, - 1) into the partial equation
- 1 = 6 + c ⇒ c = - 1 - 6 = - 7
y = 2x - 7 ← equation of line
The following table gives the mean scores for 4 different classes
on the same test.
Class A Class B Class C Class D
72% 82% 63% 78%
What is the combined average for classes A, B, C and D, if
class A has 30 students, class B has 22 students, class C has
35 students, and class D has 27 students?
A
73.8%
73.5%
B
72.6%
D = 71.9%
Answer:
a
Step-by-step explanation:
a