Solve the system.
3x=y+2
3x+2y=5
The solution is ____
Explain your choice of method.
Answer:
(1, 1)
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Algebra I
Solving systems of equation using substitution/eliminationStep-by-step explanation:
Step 1: Define Systems
3x = y + 2
3x + 2y = 5
Step 2: Rewrite Systems
3x = y + 2
Subtract 2 on both sides: 3x - 2 = yRewrite: y = 3x - 2Step 3: Redefine Systems
y = 3x - 2
3x + 2y = 5
Step 4: Solve for x
Substitution
Substitute in y: 3x + 2(3x - 2) = 5Distribute 2: 3x + 6x - 4 = 5Combine like terms: 9x - 4 = 5Isolate x term: 9x = 9Isolate x: x = 1Step 5: Solve for y
Define equation: 3x + 2y = 5Substitute in x: 3(1) + 2y = 5Multiply: 3 + 2y = 5Isolate y term: 2y = 2Isolate y: y = 1
James and Mary were both saving some of their lunch money to purchase a new skate board. James started off with only $7 and he will save 56
each week and Mary started off with $13 and she will save 57 each week. How much money will James and Mary have after 8 weeks?
Answer:
James: $455
Mary: $469
Step-by-step explanation:
Tell me if it is wrong I would like to know!
:)
Also I'm new on Brainly so don't go too hard on me if this is wrong plz.
Amy said 49 of her teammates got hits during a recent softball game. Which decimal represents this same amount?
A.
0.49
B.
0.444
C.
0.444
D.
0.49
Which pair of triangles MUST be similar?
A. Triangle 5 has a 25 degree angle and a 75 degree angle. Triangle 6 has a 25 degree angle and a 70 degree angle.
B. Triangles 1 and 2 each have a 40 degree angle.
C. Triangle 7 has a 40 degree angle and a 35 degree angle. Triangle 8 has a 40 degree angle and a 105 degree angle.
D.Triangles 3 and 4 are both scalene. Each have a 65 degree angle.
Answer:
C
Step-by-step explanation:
The total measurement of a triangle is 180
Triangle 7 has a 40 degree angle and 35 degree angle.
40+35=75
180-75=105
Triangle 8 has the same angle that is 40 degrees and 105. And if you do the same math, you would get 35 for the missing angle of triangle 8
Use the graph below for this question: A 6 4 3 What is the average rate of change from x = -1 to x = -2? (1 point) 2 - 2 4 -1
Answer:
- 2
Step-by-step explanation:
The average rate of change of f(x) in the closed interval [ a, b ] is
[tex]\frac{f(b)-f(a)}{b-a}[/tex]
Here [ a, b ] = [ - 2, - 1 ] , then
f(b) = (f(- 1) = 5 ← corresponding value of y (- 1, 5 )
f(a) = f(- 2) = 7 ← corresponding value of y (- 2, 7 ) , thus
average rate of change = [tex]\frac{5-7}{-1-(-2)}[/tex] = [tex]\frac{-2}{1}[/tex] = - 2
x + 4 = -14 im frustraded i need an answer haha hewpppp
Find the GCF of 6x+4 and divide
PLEASE I'M BEING TIMED!! WILL GIVE BRAINLIEST>
The system of equations y = –2x + 1 and y = x + 5 is shown on the graph below.
On a coordinate plane, 2 lines intersect around (negative 1.3, 3.8).
Which statement is true about the solution to the system of equations?
The x-value is between –1 and –2, and the y-value is between 3 and 4.
The x-value is between 3 and 4 , and the y-value is between –1 and –2.
The x-value is between 1 and 2, and the y-value is between –3 and –4.
The x-value is between –3 and –4, and the y-value is between 1 and 2.
Answer:
A i think
Step-by-step explanation:
A family has four daughters, Molly, Daisy, Rosie and Tilly.
• Daisy is six years older than Molly.
• Molly is four years younger than Tilly.
• Rosie is one year older than double Molly's age.
• The total of their ages is 51.
Find the age of each of the four girls.
Answer:
Read Below
Step-by-step explanation:
Rosie 17
Daisy 14
Tilly 12
Molly 8
Answer:
these questions are in maths???
oh my gwad....
find the surface area of the cylinder using pie.
Answer:
≈1130.97336 yd
Step-by-step explanation:
the formula to find the surface is A= 2 π r h + 2 π r 2
where r is the radius and h the height. you subsitute it with your value.
r = 9 yd and h = 11 yd
so, A= 2 π r h + 2 π r 2 = 2 x π x 9 x 11 + 2 x π x 9^2 ≈ 1130.97336 yd
Carlos went kayaking and burned 380 calories. It's a hot day, and he decides to replace all of his calories to keep his energy up. Select a snack from the following options that will allow Carlos to replace his calories.
Step-by-step explanation:
yoi forgot to pit the snacks.
Write an inequality for the graph below.
5-
4-
3-
2-+
1-
T
2
3
6
11
3+
--
5
-7-
Continue
Answer:
[tex]y \leqslant - \frac{2}{3} x + 6[/tex]
5. Which of the following is a good strategy to solve this problem?
"Jane has saved $240 to spend on gifts this year. She is planning to spend $96.00 on gifts for her parents, $18.00 on gifts for each of her two brothers, and $44.00 on gifts for her grandmother. How much money will she have left after buying the gifts?"
A. draw a picture
B. make a list
C. write an equation
D. any of these would work
Answer:
C. or D.
Step-by-step explanation:
It depends on the person to be honest, however in this situation an equation is the best route.
Answer: C is the best as choice A is just plain out wrong.
A first grader reads 72 words in 4 minutes.
Pls explain how you got the answer:(
all you have to do is 4 / 72
Step-by-step explanation:
4÷72
Answer:
18
Step-by-step explanation:
you divide 72 by 4
Can someone explain Slope to me? I literally have no idea what is from my teacher or from Aleks. I don't get what y1 and y2 are and i don't get what rise or run is. I have no idea how to get slope (brainliest for whoever explains a function too)
Yeah, I know Alex sucks. SO slope is the change in Y over x. So to find slope for ex. is lets use points (8,4) and (6,5) the equation to find slope is Y2-Y1 over X2-X1 or Y2-Y1 / X2-X1 and that basically the y's on the points you have. In this case it will be 4 and 5 since y always comes second or after the x. What I like to do is this X1(8), Y1(4) and X2(6), Y2(5). After you have that set up you just put them in the equation it will be 5-4/6-8 which is -1/2 use calculator. So Y is the y-axis and X is the x-axis.
Function is when every input(x) has only one output(y) . For example if we have the table
X,1 , 4 , 5, 9, 10 this is not a function because the -3 has both 9 and 10 for an output.
Y,2, 6 ,6, -3 , -3
A function will look more like this
1 2 3 4 5 6
2 4 6 8 10 12 every output has only one input
I recommend to watch Brian McLogan on youtu he can really help. Just search anything then his name. Or even Function then his name he explains it really well.
Find the length of each arc.
Answer:
34/3 pi
Step-by-step explanation:
We can find the arc length by
s = r theta where theta is in radians
Change 255 to radians
255 * pi/180 = 17/12 pi
s = 8 * 17/12 pi
s = 34/3 pi
The surface temperature, t, of a planet depends on the planet's distance,
d, from the Sun.
A. (d)
B.d(t)
C.s(p)
D.p(s)
Answer:
A.
Step-by-step explanation:
distance from the sun makes how hot or cold it is
Expand this question: 6(x - 4y)
What is 2+2? xd noob
Answer:
4
Step-by-step explanation:
You can count on your fingers if you need to or use a calculator.
Answer:
2+2 is 4
Step-by-step explanation:
Which equation matches the relationship shown in the table?
Answer:
s = 2r + 1.5
Step-by-step explanation:
Slope = 2
y-intercept: (0, 1.5)
Bob's Gift Shop sold 750 cards for Mother's Day. One salesman, Bella, sold 2% of the cards sold for Mother's Day. How many cards did Bella sell?
Answer:
3
Step-by-step explanation:
Answer:
15
Step-by-step explanation:
(750÷100)2=15
750÷100=1%
45% of 40 is what number
Answer:
18
Step-by-step explanation:
Answer:
Your answer is 18
Step-by-step explanation:
The way to get the answer is...
is over of=percent over 100
so for this situation it would look like this...
[tex]\frac{x}{40}[/tex] = [tex]\frac{45}{100}[/tex]
Cross multiply and you will get...
1800 = 100x
get x by itself, so divide 100 by both sides
So you get
x=18
I hope this helps you. Have a great day and good luck! :)
Do the equations x + y = -2 and 3x + 3y = −6 define the same line? Explain.
Answer:
Yes, they do.
Step-by-step explanation:
They both pass through the same points of -2 on the x and y axis.
will give brainliest
Answer:
D
Step-by-step explanation:
Protect economic freedom, so that a strong central government couldn't stop them from doing what they wanted to earn money.
***I hope this answer's correct. Plz lmk!!!
Answer:
C I think because it makes most sence sorry if wrong answer
Step-by-step explanation:
( I think this would be a diferent subject just saying)
hope this helps
i need help !! asap please !!!
if u can guess my number between 1-5 I will give brainliest :)
Answer:
6 I guess.
Step-by-step explanation:
6 I guess.
guess
The sides of a square field are 28 meters. A sprinkler in the center of the field sprays a circular area with a diameter that corresponds to a side of the field. How much of the field is not reached by the sprinkler? Round your answer to the nearest hundredth. Use 3.14 for π.
Answer:
168.24784 m²
Step-by-step explanation:
Area of the square:
28 x 28=784 sq. m.
Area of the circle:
π(r²)=π(14)²=196π
=615.75216
Area not covered by the sprinkler:
784-615.75216=168.24784 m²
Answer:
The sprinkler does not reach 168.56 m² of the field.
Step-by-step explanation:
Find the circular area sprayed by the sprinkler.
A = πr² Use the formula.
A = π(14)² Substitute. Use 14 for r.
A ≈ 3.14 × 14² Substitute. Use 3.14 for π.
A ≈ 3.14 × 196 Evaluate the power.
A ≈ 615.44 Multiply.
The area of the circular area is about 615.44 ft².
Find the area of the square field.
A = s² Use the formula.
A = 28² Substitute. Use 28 for s.
A = 784 Evaluate the power.
The area of the square field is 784 m².
Find how much of the field is not reached by the sprinkler. Subtract the circular area sprayed by the sprinkler from the area of the square field.
784 − 615.44 = 168.56
What is the solution to the system of linear equations graphed below?
Will give BRAINLEST
Answer:
C.
Step-by-step explanation:
Your answer is C because that is where the lines meet.
Answer:
it 1/2,4
Step-by-step explanation:
935 = 85 x 11
Which statement does the equation represent?
O A 85 is 11 more than 935.
B. 935 is 85 more than 11.
OC. 935 is 85 times as many as 11.
D. 85 is 11 times as many as 935.
Answer:
since 85 times 11 is equal to 935 I'd say the answer to that is D
Step-by-step explanation:
Answer:
5x185=935
Step-by-step explanation:
Which is the graph of x-y=1
Answer:
here you go! :)
hope it helps!
Step-by-step explanation: