6y –2(y + 1) = 3(y – 2) + 6?
The answer is y = 2 (the third option.)
Answer:
y = 2
Step-by-step explanation:
[tex]6y-2(y+1)=3(y-2)+6\\\\6y-2y-2=3y-6+6\\\\4y-2=3y\\\\4y-2=3y\\\\4y-2+2=3y+2\\\\4y=3y+2\\\\4y-3y=3y-3y+2\\\\\boxed{y=2}[/tex]
Hope this helps.
1
Chapter Test
Find the length of QS. Explain how you found your answer.
1.
2.
Q
12
R
19
S
Explain
Evaluate |-7| + |-5| + 7 please help :(
Answer:
19
Step-by-step explanation:
|-7| +|-5| + 7 = 7+5+7= 19
I NEED HELP BRAINLYEST BRAINLYEST
Answer:
The answers are A B D F
Step-by-step explanation:
How do you use inverse operations to isolate a variable? Give an example.
Answer:
Step-by-step explanation:
3X + 3 = 18
The sum of Ymani and her mom’s ages is 54. If her mom is 30 years older than Ymani, how old is Ymani?
Answer:
Ymani is 12 years old.
Step-by-step explanation:
Y + M = 54
M = 54 - Y
Y + 30 = M
Y + 30 = 54 - Y
2Y = 24
Y = 12
Ymani is 12 years old.
"Find the slope and y-intercept of the line on the graph."
Answer:
slope: 1.5/3
y intercept: 3
Step-by-step explanation:
the line goes through the vertical line and meets at 3
from one point to the other it goes up 3 and over 1 and a half
if 1.5/3 doesn't work try 3/1.5
A sum of $ 2700 is shared among Eric, Jo and Richard. Jo's share is two times that of Richard's share. Eric's share is three times that of Jo's share. Find Eric's share.
Answer:
Eric's share is $1,800.
Step-by-step explanation:
You can write the following equations from the information given:
x+y+z=2,700 (1)
y=2z (2)
x=3y (3), where:
x=Eric's share
y= Jo's share
z=Richard's share
Now, you can replace (2) in (1) and (3) to have two equations:
x+2z+z=2,700
x+3z=2,700
x=3(2z)
x=6z
The two equations are:
x=6z (4)
x+3z=2,700 (5)
Then, you can replace (4) in (5) and solve for z:
6z+3z=2,700
9z=2,700
z=2,700/9
z=300
After this, you can replace the value of z in (4) to find x:
x=6*300
x=1800
Finally, you can replace the value of z in (2) to find the value of y:
y=2*300
y=600
According to this, the answer is that Eric's share is $1,800.
There are 12 inches in 1 foot and 5,280 feet in 1 mile. Elena ran 2 1/2 miles. How many feet did Elena run?
Answer:
She Ran 13,300 ft. hope this helps!
Step-by-step explanation:
I need help I don't understand this
It is clear from the diagram that,
ㄥ6 + ㄥ8 = 180⇒ (2x - 5) + (x + 5) = 180
⇒ (2x + x) + (5 - 5) = 180
⇒ 3x + 0 = 180
⇒ x = 180/3
⇒ x = 60°
◈ From the geometry of figure,
ㄥ3 = ㄥ6⇒ ㄥ6 = (2x - 5)
⇒ ㄥ6 = (2×60 - 5)
⇒ ㄥ6 = 120 - 5
⇒ ㄥ6 = 115°
A video game club has 42 members. The number of high school members is six less than twice the number of middle school members. Which expression represents the number of high school members in the club?
A) 2x - 6
B) 2x + 6
C) 2x - 36
D) 36 - 2x
Answer:
A
Step-by-step explanation:
42+6=48
48/2=24
24-6=18
(2*24)-6=18
Maggie's brother is 6 years younger than twice her age. The sum of their ages is 36. How old is Maggie? Maggie is years old.
Answer:
Maggie is 14 years old.
Step-by-step explanation:
M + B = 36
B = 36 - M
2M - 6 = B
2M - 6 = 36 - M
3M = 42
M = 14
Maggie is 14 years old.
Select all the rational numbers
Answer:
Cants see the picture hope this helps!
Step-by-step explanation:
We have seen that every integer is a rational number, since a=a1 a = a 1 for any integer, a . We can also change any integer to a decimal by adding a deci
The distance between (2, 7) and (-6, 2)
HHHEEEELLLPPPPP just 3 questions!!!!!!!!!!!!!!!!!!!!! 1. How does evaluating a function at specific points relate to graphing the function? 2. What is the process for finding x and y - intercepts from a graph? a table? an equation? 3. Can you think of a career or field of work that utilizes the skills of interpreting, comparing, and/or graphing functions? How might that career or field use the skill/concept?
Answer:
1) When we have a function y = f(x), evaluating this function in one given point (x0 for example ) is equivalent to changing the x inside the function by the value x0.
This will give us the point (x, f(x0)).
now, a graph is conformed by the set of all the points (x, f(x)).
2) The x and y-intercepts are the points where the graph intercepts the x-axis or the y-axis.
If you have a table with points (x, y), the y-intercept is the point (0, y') and the x-intercept is the point (x', 0)
Where x' and y' are known values.
If you have an equation:
y = f(x).
The x-intercept is the point (x', 0)
So you need to find the value x' such that f(x') = 0.
The y-intercept is the point (0, y')
So you need to evaluate the function in x = 0, and find the value of y.
y' = f(0).
3) The obvious answer is any science-related career, where graphs are used to transmit a lot of information with almost no words.
Another option can be an economist, where, for example, interpreting and comparing graphs can be useful to determine which option fits better the needs of a given company or what decision is better to be taken.
Find an equivalent ratio in simplest terms: 16:40
Answer:
1:4
Step-by-step explanation:
Just because okay
3x + c
10. Find two consecutive even numbers whose sum is 126.
11. Find three consecutive numbers whose sum is 84.
Help pls
Answer:
10. 62 and 64
11. 27, 28, and 29
Step-by-step explanation:
Please help idk this
Answer:
DF is congruent to ZX
Step-by-step explanation:
Pls make branliest.
Given f(x)=4x+5, evaluate f(4).
Answer:
21
Step-by-step explanation:
1. plug in 4 for F(x) making 4=x:
[tex]f(4)=4(4)+5[/tex]
2. multiply 4 and 4:
[tex]f(4)=4(4) +5[/tex]⇒[tex]f(4)=16+5[/tex]
3. Add 16 and 5 to get your answer:
[tex]f(4)= 16+5[/tex]⇒[tex]f(4)=21[/tex]
Which angles are adjacent to each other?
Answer:
Two angles are Adjacent when they have a common side and a common vertex and don't overlap.
Step-by-step explanation:
Hope this helps, can't see your angles lol!
Question:Choose the correct scale factor:
A)2
B)1/2
C)3
D)1/3
The length of ND = 3 units
The length of N'D' = 6
6 / 3 = 2
The scale factor is 2
Answer: A) 2
Step-by-step explanation:
The shape has been enlarge which means B and D are ruled out because if a shape gets enlarge its scale factor has to be greater than 1.
We will use the coordinate of the image of D to find the scale factor.
Pre-image: (2,2) Enlarge or image: (4,4)
So as we can see to get from 2 to 4 you will have to multiply by 2. So the scale factor is 2
Please help me!!!!!
Answer: see proof below
Step-by-step explanation:
Given: A + B + C = π → A = π - (B + C)
→ B = π - (A + C)
→ C = π - (A + B)
Use Sum to Product Identity: sin A - sin B = 2 cos [(A + B)/2] · sin [(A - B)/2]
Use the following Cofunction Identity: cos (π/2 - A) = sin A
Proof LHS → RHS:
LHS: sin A - sin B + sin C
= (sin A - sin B) + sin C
[tex]\text{Sum to Product:}\quad 2\cos \bigg(\dfrac{A+B}{2}\bigg)\cdot \sin \bigg(\dfrac{A-B}{2}\bigg)+2\cos \bigg(\dfrac{C}2{}\bigg)\cdot \sin \bigg(\dfrac{C}{2}\bigg)[/tex]
[tex]\text{Given:}\qquad 2\cos \bigg(\dfrac{\pi -(B+C)}{2}+\dfrac{B}{2}}\bigg)\cdot \sin \bigg(\dfrac{A-B}{2}\bigg)+2\cos \bigg(\dfrac{C}2{}\bigg)\cdot \sin \bigg(\dfrac{C}{2}\bigg)\\\\\\.\qquad \qquad =2\cos \bigg(\dfrac{\pi -C}{2}\bigg)\cdot \sin \bigg(\dfrac{A-B}{2}\bigg)+2\cos \bigg(\dfrac{C}2{}\bigg)\cdot \sin \bigg(\dfrac{C}{2}\bigg)[/tex]
[tex].\qquad \qquad =2\cos \bigg(\dfrac{\pi}{2} -\dfrac{C}{2}\bigg)\cdot \sin \bigg(\dfrac{A-B}{2}\bigg)+2\cos \bigg(\dfrac{C}2{}\bigg)\cdot \sin \bigg(\dfrac{C}{2}\bigg)[/tex]
[tex]\text{Cofunction:} \qquad 2\sin \bigg(\dfrac{C}{2}\bigg)\cdot \sin \bigg(\dfrac{A-B}{2}\bigg)+2\cos \bigg(\dfrac{C}2{}\bigg)\cdot \sin \bigg(\dfrac{C}{2}\bigg)[/tex]
[tex]\text{Factor:}\qquad 2\sin \bigg(\dfrac{C}{2}\bigg)\bigg[ \sin \bigg(\dfrac{A-B}{2}\bigg)+\cos \bigg(\dfrac{C}{2}\bigg)\bigg][/tex]
[tex]\text{Given:}\qquad 2\sin \bigg(\dfrac{C}{2}\bigg)\bigg[ \sin \bigg(\dfrac{A-B}{2}\bigg)+\cos \bigg(\dfrac{\pi -(A+B)}{2}\bigg)\bigg]\\\\\\.\qquad \qquad =2\sin \bigg(\dfrac{C}{2}\bigg)\bigg[ \sin \bigg(\dfrac{A-B}{2}\bigg)+\cos \bigg(\dfrac{\pi}{2} -\dfrac{(A+B)}{2}\bigg)\bigg][/tex]
[tex]\text{Cofunction:}\qquad 2\sin \bigg(\dfrac{C}{2}\bigg)\bigg[ \sin \bigg(\dfrac{A-B}{2}\bigg)+\sin \bigg(\dfrac{A+B}{2}\bigg)\bigg][/tex]
[tex]\text{Sum to Product:}\qquad 2\sin \bigg(\dfrac{C}{2}\bigg)\bigg[ 2\sin \bigg(\dfrac{A}{2}\bigg)\cdot \cos \bigg(\dfrac{B}{2}\bigg)\bigg]\\\\\\.\qquad \qquad \qquad \qquad =4\sin \bigg(\dfrac{A}{2}\bigg)\cdot \cos \bigg(\dfrac{B}{2}\bigg)\cdot \sin \bigg(\dfrac{C}{2}\bigg)[/tex]
[tex]\text{LHS = RHS:}\quad 4\sin \bigg(\dfrac{A}{2}\bigg)\cdot \cos \bigg(\dfrac{B}{2}\bigg)\cdot \sin \bigg(\dfrac{C}{2}\bigg)=4\sin \bigg(\dfrac{A}{2}\bigg)\cdot \cos \bigg(\dfrac{B}{2}\bigg)\cdot \sin \bigg(\dfrac{C}{2}\bigg)\quad \checkmark[/tex]
If only 10 of 200 apples where bad what percent is that
Answer:
5% were bad
Step-by-step explanation:
Multiply [tex]\frac{10}{100} with 200[/tex]
Then you get 5%
What is the slope of the line ?
Answer:
-2[tex]\frac{2}{3}[/tex]
Step-by-step explanation:
The line passes through points (1,4) and (4,-4)
Slope (m) = change in y ÷ change in x
i.e m = [tex]\frac{-4 - 4}{4 - 1} = \frac{-8}{3} = -2\frac{2}{3}[/tex]
if you can answer any of these please do and put the question number by the answer
Answer:
16. a = 13
Step-by-step explanation:
Equation: y = -4(-2) + 5
1) Multiply -4 with -2. Whenever you multiply two negatives, the product turn into a positive number; therefore, -4(-2) = 8
2) Then, add 8 and 5 which is 13.
Hope this helps!
Hi guys actually I have forgotten the steps do it yesterday my online school opened so I don't how to solve it can you help me please
Answer:
(i) (x +4)^3 = x^3 +12x^2 +48x +64
(ii) (2m +1)^3 = 8m^3 +12m^2 +6m +1
(iii) (a -2b)^3 = a^3 -6a^2b +12ab^2 -8b^3
Step-by-step explanation:
Powers of a binomial have a pattern. The coefficients of the terms of the expanded product are the numbers in the corresponding row of Pascal's Triangle. Here, you want the 3rd power, so the coefficients of interest are ...
1, 3, 3, 1
The pattern is ...
(a +b)^2 = a^2 +2ab +b^2
(a +b)^3 = a^3 +3a^2b +3ab^2 +b^3
The total of powers of the variable is equal to the exponent of the binomial. The powers of the first variable decrease to 0 while the powers of the second variable increase from zero.
When 'a' or 'b' is something with a coefficient, that whole term is raised to the appropriate power.
__
i) (x+4)^3 = x^3 +3·4x^2 +3·4^2x +4^3
(x +4)^3 = x^3 +12x^2 +48x +64
__
ii) (2m +1)^3 = (2m)^3 +3·1·(2m)^2 +3·1^2·(2m) +1^3
(2m +1)^3 = 8m^3 +12m^2 +6m +1
__
iii) (a -2b)^3 = a^3 +3·a^2·(-2b) +3·a·(-2b)^2 +(-2b)^3
(a -2b)^3 = a^3 -6a^2b +12ab^2 -8b^3
_____
Additional comment on Pascal's triangle
The numbers in each row are the sums of the two numbers immediately above. For binomial expansion, you're only interested in the contents of a row. The "patterns" shown in the attachment are an extra added attraction, not particularly relevant to binomial expansion.
Which expression is equivalent to (5m^)3
Answer:
5m•5m•5m
Step-by-step explanation:
You are multiply the factor by itself as many times as the exponent says. so if the factor is 5m, you would multiply it by itself by the exponent, which in our case is 3.
An expression is defined as a set of numbers, variables, and mathematical operations. The expression (5m)³ can be expressed as 5·5·5·m·m·m.
What is an Expression?In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.
The given expression (5m)³ can be expressed in the following manner,
[tex](5m)^3 = 5 \cdot 5 \cdot 5\cdot m\cdot m\cdot m[/tex]
Hence, the expression (5m)³ can be expressed as 5·5·5·m·m·m.
Learn more about Expression:
https://brainly.com/question/13947055
#SPJ2
Solve for x: (5 points) negative 4 over 3, multiplied by x minus 6 equals negative 26
Answer:
x=15
Step-by-step explanation:
-4/3x - 6 = -26multiply both sides of the equation by 3-4x-18=-78-4x=-78+18(move constant to the right side)-4x=-60x=15Hope this helps.
I need to know what it is between because I’m stuck and I need help
The answer is 5 and 7 because the square root of 42 is 6.8
*3x + 6 - 2y = 6 Isolate y
Answer:
3x +6-6 =2y
=) 3x =2y
=) 3x/2 =y
Let x = 4 then, 3 ×4 / 2 =y
= ) 12/2 =y
=) 6 =y
y =6
Answer:
3
Step-by-step explanation:
3×2 + 6 - 2×3 =6
to make the LHS equals to RHS (6).
x should be 2 and y should be 3
What is the distance between the points (7, 8) and (–8, 0) on a coordinate grid?
Answer:
Hence, the distance between (7,8) and (-8,0) is:
17
Step-by-step explanation: (a,b)=(7,8) and (c,d)=(-8,0)
Hope this helps!!!!!!
The distance between the points (7, 8) and (–8, 0) = 17 units
Distance between two pointsThe distance between two points is given by the formula:
[tex]D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2} [/tex]
For the line passing through the points (7, 8) and (–8, 0)
Substitute [tex]x_1=7, y_1=8, x_2=-8, y_2=0[/tex] into the equation above:
[tex]D=\sqrt{(-8-7)^2+(0-8)^2} [/tex]
This will be further simplified as shown below:
[tex]D=\sqrt{(-15)^2+(-8)^2} \\\\ D=\sqrt{225+64} \\\\ D=\sqrt{289} \\\\ D=17[/tex]
The distance between the points (7, 8) and (–8, 0) = 17 units
Learn more on distance between two points here: https://brainly.com/question/7243416