What is the solution to the system of linear equations? Show your work using either substitution or elimination.
Need help rlly soon! Also please show work!
Answers
Answer:
x = 11 ; y =13
Step-by-step explanation:
3x - 2 y = 7 -------------(I)
y = x + 2 -----------(II)
Substitute y = x + 2 in equation (I)
3x - 2(x + 2) = 7
3x - 2*x + 2*(-2) = 7
3x - 2x - 4 = 7
x - 4 = 7
x = 7 + 4
x = 11
Plugin x = 11 in equation(II)
y = 11 + 2
y = 13
Related Questions
for f(x)=5x+1 find f(-4)
Answers
Answer:
-19
Step-by-step explanation:
f(-4) = 5(-4)+1 = -20+1 = -19
HELP ASAP PLEASE
If the bowling fans get their way, and the group plays only 1 game of laser tag, will they have
enough money to bowl 5 games? Use your expression from question 3 to calculate the cost of 1
game of laser tag and 5 games of bowling. (3 points: 1 point for the answer, 1 point for showing
your work, and 1 point for answering the question
Answers
Which angle in the isosceles triangles is the biggest?
Answers
Answer:
Since the two base angles are congruent (same measure), they are each 70°. If we are given a base angle of say 45°, we know the base angles are congruent (same measure) and the interior angles of any triangle always add to 180°.
Answer:
degrees
Step-by-step explanation:
Which number is greater?
2.2 or 15/4 (it is a fraction)
Answers
Answer:
15/4
Step-by-step explanation:
15 divided by 4 = 3.75
3.75 is greater than 2.2
Answer:
15/4
Step-by-step explanation:
2.2=22/10=44/20<15/4=75/20
(ii) Explain why a+b+c= 235°
This is a cornet maths question. How do I solve it
Answers
Answer:
Where is the image?
Step-by-step explanation:
Tell me in comments
The equation a + b + c = 235 is true because a = c = 55° and b = 125°
How to prove that a + b + c = 235?The angle a and 125° are on the same straight line.
So, we have:
a + 125° = 180°
Subtract 125 from both sides
a = 55°
The angle b and 125° are vertical angles
So, we have:
b = 125°
The angle a and angle a are vertical angles
So, we have:
c = a
This gives
c = 55°
Add the three angles
a + b + c = 55° + 125° + 55°
Evaluate the sum
a + b + c = 235°
Hence, it is true that a + b + c = 235°
Read more about vertical angles at:
https://brainly.com/question/14362353
write the exponential equation given a starting value of 7.5 and a decay rate of 7.5%
Answers
Answer:
A used car has a value of $15,250 when it is purchased in 2012. The value of the car decreases at a rate of 7.5% per year.
Write an exponential function that models the value of the car, y, over x years.
To the nearest cent, what will be the value of the car after eight years?
Step-by-step explanation:
Given g(x)=-x-2g(x)=−x−2, find g(3)
Answers
-3 - 6g = 1
explanation:
just substitute 3 for ever x in the problem
help me help me help me help me help me
Answers
Answer:
2/5 * 4/5 = 8/25 7/9 * 2/3 = 14/27 4/7 * 2/3 = 8/21 1/6 * 7/8 = 7/48 2/3 *3/9 = 2/9
Step-by-step explanation: Just multiply the top with top and bottom with the bottom To draw = just use a ruler for the width we know if you measure the square box say it is already { 20 mm } wide then you 2 * 4 = 8 is 2/5 of 20 so you shade the 8mm Then to get the 4 as ultiplier we know 20/5 =4
What is the first step to simplify the expression 5x – x(2 – 3x) + 2?
combine all like terms
simplify inside the parentheses
square the binomial
distribute –x to the terms inside the parentheses
Answers
Answer:
distribute -x to terms inside the parentheses
on a shopping trip, Gina buys two books priced $4.99 and $12.99. She also buys 2 notebooks, 2 packs of pencils, and 3 composition books. The books are on sale for 10% off the list price and school supplies are 15% off. The store charges 6.5% sales tax. Item Cost ($) Notebooks 2.88 Composition Books 0.79 Pencil Packs 1.89
Answers
The total cost of items Gina bought on her shopping trip given the percentage discount is $26.31
Given:
cost of two books = $4.99 + $12.99
= $17.98
Amount paid for books = $17.98 - 10% of $17.98
= 17.98 - 0.1 × 17.98
= 17.98 - 1.798
= $16.182
Cost of notebooks = quantity × price
= 2 × $2.88
= $5.76
cost of composition books = quantity × price
= 3 × $0.79
= $2.37
cost of pencil packs = quantity × price
= 2 × $1.89
= $3.78
Total cost = $5.76 + $2.37 + $3.78
= $11.91
Amount paid for school supplies = $11.91 - 15% of $11.91
= 11.91 - 0.15 × 11.91
= 11.91 - 1.7865
= $10.1235
Therefore,
total cost of all items Gina bought = $16.182 + $10.1235
= $26.3055
Approximately, $26.31
Read more:
https://brainly.com/question/19535437
Find the area I will make you Brainliest (show working)
Answers
Answer:
Step-by-step explanation:
16 * 16 = 256
8 * 36 = 288
Add
Answer= 544 mm^2
Answer:
The answer is 544
Step-by-step explanation:
16*16=256
(8+12+16)=36
36*8=288
288+256= 544
can someone please help me with how to find the perimeter and area of this
Answers
Answer:
Perimeter = 68ft
Area = 289ft²
Step-by-step explanation:
The lines on each side mean that they are all the same length - this shape is a square.
To find the perimeter, do 17 + 17 + 17 + 17 or 17 × 4. This gives you 68ft.
To find the area, you multiply the length and width → 17 × 17 = 289ft²
Hope this helps!
please do this for me
Answers
180-117=63
X= 63
Answer:
63 degrees
Step-by-step explanation:
HINT: know that in a triangles angles add up to 180 degrees.
1. 96+21= 117
2. 180-117=63
3. 63 degrees
It takes Alan 15 minutes to jog 1 kilometer. How many seconds does it take Alan to jog 1 kilometer?
Answers
Answer:
900
Step-by-step explanation:
there are 60 seconds in a minute. times fifteen (the number of minutes) by 60(the number of seconds in a minute) to get how many seconds.
60*15=900
hope this helps!
Help please
1. What equation is in this figure?
y + 1 = -2/3(x - 3)
y - 3 = 3/2(x + 1)
y + 2 = -3/2(x - 2)
y - 4 = -2/3(x + 2)
Answers
What is the value of x in this equation? Enter your answer in the box.
(2.4 × 103) × (3 × 10x) = 7.2 × 109
Answers
Answer:
17.92
Step-by-step explanation:
[tex]\sf 29=8x-3[/tex]
Answers
[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
Value of x is :
[tex]4[/tex][tex] \large \boxed{ \mathfrak{Explanation}}[/tex]
[tex]29 = 8x - 3[/tex][tex]29 + 3 = 8x[/tex][tex]8x = 32[/tex][tex]x = 32 \div 8[/tex][tex]x = 4[/tex][tex]\huge{\mathfrak{Kaul}}[/tex]
Como parte de un ejercicio topográfico, Salma debe hacer un registro del terreno donde está construido el Taj Mahal que es de 580m de largo x 300m de ancho. Y suponiendo que 9 ayudantes trabajarán junto con ella, ¿cuántos metros cuadrados le toca registrar a cada quién POR DÍA durante un mes? Supongamos que el mes tiene 30 días.
cual es la respuesta? porfa urge
Answers
Queremos ver cuantos metros cuadrados debe registrar cada integrante del grupo por día.
Veremos que cada integrante debe registrar 580m^2 por día.
La informacion que se nos da es:
Sabemos que los integrantes son 10, Salma y sus 9 ayudantes.El área que deben investigar esta dada por: 580m*300m = 174,000 m^2Disponen de un total de 30 días para trabajar.Conociendo el área y el número de integrantes, el área que le tocara a cada integrante está dada por:
a = 174,000 m^2/10 = 17,400 m^2
Y sabemos que tendran 30 días para registrar esa área, entonces asumiendo que en cada día registran una cantidad fija de superficie, lo que deben registrar cada día está dado por:
d = a/30 = 17,400 m^2/30 = 580m^2
Eso es lo que cada integrante debe registrar por día,
Sí quieres aprender más, puedes leer:
https://brainly.com/question/16512349
61,483
Х
13
Show your work
Answers
Answer:61,493
Step-by-step explanation:
I just used a calculator
These are two similar triangles
What is the measure of x?
24
12
X
4
x = [?]
=
Answers
jamal plans to save for a new scooter that costs 48 dollars. the sales tax rate is 5% how much will jamal need to save
Answers
i need some help on this!
Answers
Answer:
4
Step-by-step explanation:
AB=AC
2x-3=x+3
x=6
______________________________
BC=
x-2
(6)-2=4
I will mark brainly if correct
Answers
The points in the table lie on a line. Find the slope of the line.
Answers
Answer:
[tex] - \frac{4}{5} [/tex]
Step-by-step explanation:
Slope of line
[tex] = \frac{ - 6 - ( - 8)}{ - 5 - ( - 2.5)} \\ \\ = \frac{ - 6 + 8}{ - 5 + 2.5} \\ \\ = \frac{2}{ - 2.5} \\ \\ = - \frac{20}{25} \\ \\ = - \frac{4}{5} [/tex]
Find the perimeter of the triangle.
Answers
Answer:
P
=
a
+
b
+
c
Step-by-step explanation:
I need a step by step explanation, please.
Answers
Answer:
MAG SEARCH KAPO KASI PARA MALAMAN NIYO
Can you determine each slope-intercept equation and type the correct code? Please remember to type in ALL CAPS with no spaces.
Once AGAIN!
Answers
Answer:
Step-by-step explanation:
What is the slope-intercept equation
for the following line?
Answers
Answer: y = -1/2x + 1
The perimeter of a triangle is (x
3 + 2x
2 − x − 1) cm. The lengths of two sides are
(7x
3 + 12x − 7) cm and (2x
3 − 3x
2 + 5x − 11) cm. Find the length of the remaining side of
the triangle.
Answers
Step-by-step explanation:
A=7x+3+13x-7
B=2x+3-3x
P=x+3+2x+2-x-1(hope those are the numbers)
C=?
7x+3+13x-7+2x+3-3x+C=x+3+2x+2-x-1
22x-1+C=2x+4
C=2x+4-22x+1
C=-20x+3
Can someone please PLEASE tell me the answer to this
Answers
Answer:
69
Step-by-step explanation: