Answer:
A haircut costs $31
Coloring hair costs $93
Step-by-step explanation:
h = haircut
c = color
First equation: 1h + 2c = 217
Second equation: 2h + 1c = 155
Solve using elimination:
First, multiply both the equations so that they cancel the h's out:
First equation:
-1(2h + 1c = 155)
-2h - 1c = -155
Second equation:
2(1h + 2c = 217)
2h + 4c = 434
Then, put the equations together, and solve:
2h + 4c = 434
-2h - 1c = -155
3c = 279
c = 93
Find h:
2h + 1c = 155
2h + 1(93) = 155
2h + 93 = 155
2h = 62
h = 31
Hope this helped!
Question 3
On problem #10, which variable will be the easiest to isolate in order to solve the system using
substitution?
A: x, in the top equation
B: y. in the top equation
C: x, in the bottom equation
D: y, in the bottom equation
Answer:
A = Hard to do, B = Easiest, C = Pretty Easy, D = Hard
Step-by-step explanation:
Step 1:
5x - 2y = -18
x - 8y = 80
__________
Step 2:
4(5x - 2y) = (-18)4
20x - 8y = -72
__________
Step 3:
20x - 8y = -72
x - 8y = 80
__________
Step 4:
21x = ?
Also, this equation isnt a substitution question, the way to solve this is by using elimination, you can tell because the values are lined up perfectly, sub. is used when y/x, is on the bottom left or right, and the other is on the opposite.
(if this makes any sense)
If this is accurate please mark it with a brainliest :)
Can anyone by chance know how to do these geometry questions?
Answer:
G is equal to (8, -11)
Step-by-step explanation:
We are given the midpoint and one end of the line segment. We can find the other end of it by taking the distance from H to M, doubling it, and adding that to H:
[tex]G(x, y) = H(x, y) + 2(M(x, y) - H(x, y))\\\\G_x = H_x + 2(M_x - H_x)\\G_x = -4 + 2(-6 - (-4))\\G_x = -4 + 2(-2)\\G_x = -4 - 4\\G_x = 8\\\\G_y = H_y + 2(M_y - H_y)\\G_y= 3 + 2(- 3 - 4)\\G_y= 3 - 6 - 8\\G_y = -11[/tex]
So the coordinates of endpoint G are (8, -11)
what is π + e its easy
Answer:
5.85987448205
Step-by-step explanation:
Answer:
The answer is e+pi
Step-by-step explanation:
What I have learned
Help me
Is the following a function ?
Answer:
yes
Step-by-step explanation:
Danny is opening a saving account. His initial deposit was $100. He makes $25 a week mowing his neighbors lawns, and he plans to put his earnings into the savings account each week. Write an equation in slope intercept form to model the amount of money in the bank account, y, after x weeks.
Answer:
y=100x+25
Step-by-step explanation:
I'm assuming you need an equation for this.
the answer is y = 100x + 25 or 25(4x+1)
pls help asap thx :)
Answer: a
Step-by-step explanation:
It can show she earn how much each week and how much she earn at the end of the week.
PLS HELP ASAP PLSSS IT DETECTS IF ITS RIGHT OR WRONG HELPPP
Answer:
500
Step-by-step explanation:
each computer is 500 dollars
Answer:
500
Step-by-step explanation:
Divide each cost by the number of computers
500 ÷ 1 = 500
1,000 ÷ 2 = 500
1,500 ÷ 3 = 500
2,000 ÷ 4 = 500
mark brainliest if helped
I do not know what to do!! Please help me with this assignment!
Answer:
Equation of the line is y = x + 1
Standard Form: x - y = 1
Step-by-step explanation:
Ax + By = C
y = x + 1
-x + y = 1 ("A" must be positive)
x - y = -1
Please help ASAP!
I’ll mark brainliest:)
The question of the pic was cut off at the top and it says -
Line W is graphed on the coordinates plane below.
Answer: A
Explanation:
Step 1: Use the linear graph to create an equation using slope-intercept form. The y-intercept is (0,-6) because that's where the line passes the y-axis. The slope is 1/2 and that's pretty self-explanatory if you know how to find slope. The equation would be y=1/2x-6.
Step 2: Because we are looking for a line perpendicular to the linear graph, the y-intercept and slope needs to be different. If they're perpendicular, they need to intersect, so the slope needs to be the reciprocal of the original slope, 1/2. The reciprocal is -2. Your equation would be y=-2x+b, and since we don't know the y-intercept, we would leave it as b.
Step 3: Plug in the given ordered pair, (-3,-2), to get -2=-2(-3)+b. You would result with -2=6+b. Subtract 6 to both sides and you would get b=-8.
PLEASE ANSWER ASAP!!!!!!!!!
A ball is dropped from a certain height. The function below represents the height f(n), in feet, to which the ball bounces at the nth bounce.
f(n) = 9(0.7)n
What does the number 9 in the function represent?
A) Number of times the ball was dropped.
B) Height from which the ball was dropped.
C) Height to which the ball will bounce at the nth bounce.
D) Number of times the ball bounces at the nth bounce.
Answer:
c
Step-by-step explanation:
Can u please help i put extra points please explain to!
Answer:
5 over 8
Step-by-step explanation:
convert the mixed numbers to improper fractions then divide them and simplify
equation: 7/2 ÷ 40/7 = 50/80 or simplify to 5/8
*the slash is supposed to be the line that separates the top and bottom number in the fraction*
Find the value of n that makes DEF-XYZ when
DE = 4, EF = 5, XY = 4(n + 1). YZ = 7n - 1, and
Answer: n=3
Step-by-step explanation:
Understand that you need to set up a proportion before you can try to solve the question through guessing. In this case, YZ would be proportional to XY as EF is proportional to DE. You would write this as: EF/DE=YZ/XY.
Now you want to write an equation. In order to do this remember to multiply by your proportion. Here’s my equation:
5/4(4n+4)=7n-1. Now distribute:
5n+5=7n-1. Now simplify:
6=2n. Now simplify again:
n=3
Hope this helps you with your big ideas math hw!
The value of is n=3
Important information:DEF-XYZ whenDE = 4, EF = 5, XY = 4(n + 1). YZ = 7n - 1.The calculation is as follows:5/4(4n+4)=7n-1.
Now distribute:
5n+5=7n-1.
Now simplify:
6=2n.
n=3
Find out more information about the Number here : https://brainly.com/question/17429689?referrer=searchResults
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. Write 17\4 as a mixed number. You must show your work to receive all possible points.
Answer:
17/4 divided by 4 = 4 and 1/4
Step-by-step explanation:
In order to find the mixed number you have to divide the numerator by the denominator.
pls help! will give brainlist!
write a story that can describe the expression:
75x - 20
Round 0.6203 to
the tenths place
Answer:
0.6
Step-by-step explanation:
-7 - 2 ..........................................................
..
Answer:
-9 is the answer
Step-by-step explanation:
hope it helps!
-(4x - 5) + 16x ≥ -31
can you solve this inequality equation?
Answer: x≥-3
Step-by-step explanation:
-(4x-5)+16x≥-31
-4x+5+16x≥-31
12x+5≥-31
-5 -5
12x≥-36
12/12x≥-36/12
x≥-3
hope this helped :)
help me please if you can tell me the answer
Answer:
a
Step-by-step explanation:
Answer: Im pretty sure that its D
Step-by-step explanation:
pls dont be mad if its wrong
Find the value of x for which m ll n
1.) Calculate the length of the diameter, radius, area, and circumference for each of the following circles.
Remember to show your work!
1. Diameter:
Area:
Radius:
Circumference:
2. Diameter:
Area:
Radius:
Circumference:
Answer:
Step-by-step explanation:
A.
Diameter : 14 inches
Radius : 7 inches
Circumference: 2 • 3.14 • 7 = 43.96
Área: 7^2 • 3.14
B.
Diameter: 18 cm
Radius: 9 cm
Area: 9^2 • 3.14 Ex R^2 • 3.14
Circumference: 2 • 3.14 • 9 = 56.52
R • 3.14 • 2
A football team has $3,744 to spend on hats for their fans. Each hat costs $8. How many hats can the team buy?
Answer:
468
Step-by-step explanation:
3,744/8=468
A triangle has vertices on a coordinate grid at N (7,3), 0(-8, -3), and
P(-8,-8). What is the length, in units, of NO?
Answer:
[tex]d\approx 16.16\ units[/tex]
Step-by-step explanation:
Distance Between two Points in the Plane
Given two points A(x,y) and B(w,z), the distance between them is:
[tex]d=\sqrt{(z-y)^2+(w-x)^2}[/tex]
The triangle formed by the points N (7,3), 0(-8, -3), and P(-8,-8) is shown in the image provided.
We are required to find the distance between N and O:
[tex]d=\sqrt{(-3-3)^2+(-8-7)^2}[/tex]
[tex]d=\sqrt{(-6)^2+(-15)^2}[/tex]
[tex]d=\sqrt{36+225}[/tex]
[tex]d=\sqrt{261}[/tex]
Since 261=9*29:
[tex]d=3\sqrt{29}[/tex]
[tex]\mathbf{d\approx 16.16\ units}[/tex]
y=12x=25 help please
Answer:
Simplifying
y = 12x + 25
Reorder the terms:
y = 25 + 12x
Solving
y = 25 + 12x
Solving for variable 'y'.
Move all terms containing y to the left, all other terms to the right.
Simplifying
y = 25 + 12x
Step-by-step explanation:
I tried
Could you help me, pls? :c
Answer:
lolshdusudyudhdgfhfhd
Answer:
17
Step-by-step explanation:
if a=2 then
4(2)-2x is greater than or equal to 13(2)
8-2x is greater than or equal to 26
You now have to find the smallest number that will accurately fit this equation. In this case it is 17.
8-2(17) is greater than or equal to 26
8-34 is greater than or equal to 26
26 is greater than or equal to 26
Hope this helps :)
fre ponts but so this doesnt get taken down whats 34+48b+12b=234
Answer:
thx lol
Step-by-step explanation:
Answer:
Thanks have an awsome day :)
Step-by-step explanation:
3 and _ had the same absolute value
Answer:
-3
Step-by-step explanation:
absolute value means how far the number is from 0 so 3 and -3 are both 3 away from 0
Can someone please help me with number 2 I need this right so I don’t fail my class
Answer:i really wish i could help
Step-by-step explanation:
Subtract -7x^2+4x+2 from x^2-3x
Answer:
-8x^2+x+2
Step-by-step explanation:
If C = x + 8 and D = 2x + 10, find an expression that equals 2C + 3D in
standard form.
Answer:
[tex]8x+46[/tex]
Step-by-step explanation:
Insert the original values of C and D into the new expression:
[tex]2(x+8)+3(2x+10)[/tex]
Simplify the expression. Use the distributive property:
[tex]2(x)+2(8)+3(2x)+3(10)\\\\2x+16+6x+30[/tex]
Combine like terms:
[tex](2x+6x)+(16+30)\\\\8x+46=2C+3D[/tex]
:Done