Answers
Answer:
(B) Subtract 3x from both sides of the equation, and then divide both sides by 2.
Can't read the second question fully.
(A) 0.53
Step-by-step explanation:
Number 1:
If we have the equation [tex]3x + 2 = 5x[/tex], our first goal is to get rid of the x term on one side.
To do this we can subtract 3x from both sides. This leaves our equation to [tex]2=2x[/tex]. To find x, we want to divide both sides by 2 since 2x divided by 2 is just x. Our goal is to isolate x. This leaves [tex]x=1[/tex].
I couldn't read Number 2 fully - I'm sorry :c
Number 3:
Given the equation [tex]3(x+0.2)=2.2[/tex], we want to isolate x on one side.
To do this, we first apply the distributive property to the left side.
[tex]3x + 0.6 = 2.2[/tex]
Now subtract 0.6 from both sides:
[tex]3x=1.6[/tex]
And divide both sides by 3.
[tex]x=0.5\overline{3}[/tex]
This rounds to 0.53.
Hope this helped!
Answer:
B
28.78
A
Step-by-step explanation:
Equation
3x + 2 = 5x
The first step is to subtract 3x from both sides.
3x - 3x + 2 = 5x - 3x
2 = 2x
The next step is to divide by two. That's the 2 in front of the two x.
2/2 = 2x/2
1 = x
So the answer must be B
The others are just not done in the right order and give wrong answers.
==================
Sorry didn't see the other two.
================
problem 2
Janette
Total Cost 555.28
4 Tires (4*122.57) 488.28 (Subtract)
Installation 65.00
Monique
Total Cost 585.34
Tires (4*136.71) 546.84 (Subtract)
Installation 38.50
Difference 26.50 (Subtract from 65)
Problem 3
3(x + 0.2) = 2.2
3x + 0.6 = 2.2
3x + 0.6 - 0.6 = 2.2 - 0.6
3x = 1.6
x = 1.6/3
x = 0.53
Related Questions
Describe a single transformation the has the same effect as rotations a shape 90 degrees clockwise around the origin, then reflecting the result over the x-axis
Answers
Answer:
reflection over the line y = x
Step-by-step explanation:
A transformation is the movement of a point from its initial location to its new location. If a shape is transformed then all its points are also transformed. Types of transformations are rotation, translation, dilation and reflection.
If apoint A(x, y) is rotated 90 degrees clockwise around the origin then the new location is at A'(y, -x). Then if the point A'(y, -x) is reflected over the x axis the new location is A" (y, x)
If a point A(x , y) is reflected over y = x, the new coordinate is A'(y , x)
A transformation that corresponds to rotating a shape 90 degrees clockwise around the origin, then reflecting the result over the x-axis is a reflection over the line y = x
Simplify 36/90 need to no the steps the answer is 2/5 just need steps
Answers
Answer:
2/5
Step-by-step explanation:
Divide the top and bottom by 18
36/90
36÷ 18 = 2
90 ÷18 = 5
36/90 = 2/5
Answer:
Below
Step-by-step explanation:
Notice that:
● 36 = 18×2
● 90 = 18×5
■■■■■■■■■■■■■■■■■■■■■■■■■■
● (36/90) = (18×2)/(18×5)
● (36/90) = (18/18) × (2/5)
● (36/90) = 1 × (2/5)
● (36/90) = (2/5)
70=(4x+36)/2 figure this out please
Answers
Answer:
[tex]\boxed{\bold{\huge{\boxed{x = 26}}}}[/tex]
Step-by-step explanation:
[tex]70 = \frac{4x+36}{2}[/tex]
Multiplying both sides by 2
[tex]70 * 2 = 4x+36[/tex]
[tex]140 = 4x+36[/tex]
Subtracting 36 to both sides
[tex]140 - 36 = 4x[/tex]
[tex]104 = 4x[/tex]
Dividing both sides by 4
[tex]26 = x[/tex]
OR
[tex]x = 26[/tex]
Answer:
x=26
Step-by-step explanation:
[tex]70=\frac{4x+36}{2}\\ 70*2=4x+36\\140=4x+36\\4x=140-36\\4x=104\\\frac{4x}{4}=\frac{104}{4}\\ x=26[/tex]
check
70=(4x+36)/2
70=(4*26+36)/2
70=(104+36)/2
70=140/2
70=70
What is the decimal of the fraction 7/9?
Answers
Answer:
0.77777777777777777777777777777777(the 7 repeats forever)
Step-by-step explanation:
Answer: 0.78
To find the decimal of a fraction, you divide the numerator by the denominator. 7 ÷ 9 is equal to 0.77777... which is equal to 0.78 when rounded.
18 n squared + 120 n - 378
Answers
Answer:
18n^2+120-378
Step-by-step explanation:
18n^2+120-378
The above expression can't be simplified further because the terms aren't like terms.
Hope this helps ;) ❤❤❤
Answer:
18n squared + 120n - 378
4.243 + 120n + 378
124.243 + 378
502.243
Margo spends 0.25 of her paycheck on a new dress, One-eighthof her paycheck on shoes, and $24 on a birthday present. If she spent $60 altogether, how much was Margo’s paycheck?
Answers
Answer:
96
Step-by-step explanation:
.25x + .125x + 24 = 60
.25x + .125x = .375x
.375x + 24 = 60
60 - 24 = 36
.375x = 36
36/ .375
x = 96
Answer:
96
Step-by-step explanation:
I TOOK IT ON EDGGGGGGG
10+80-60x3 divided by 4 -7 x 3 +6
Answers
Answer:
90/ 11 or 8.18
Step-by-step explanation:
(10+80-60 * 3) / ( 4 -7 x 3 +6)
-90/-11
90/11
8.18
Given the diagram above, m∠Z is:
Answers
Answer:
z = 120º
Step-by-step explanation:
t + 2t + t + 2t = 360º
60 + 2(60) + 60 + 2(60) = 360
t = 60
2t = z
z = 120º
This is all based on the fact there there are 360º in a quadrilateral.
help plzzzzzzzzzzzz not i am lost. 100 points or more if I can. Show how to solve the Quadratic Equation y=6x^2 +2x - 20 or a different equation you choose by ALL OF THE FOLLOWING METHODS: Using Quadratic Formula by hand Using Factoring and the Zero Property Product Using Completing the Square Using Graphing on the Calculator
Answers
Answer:
see below
Step-by-step explanation:
y=6x^2 +2x - 20
a=6 b= 2 c = -20
Quadratic Formula
-b ± sqrt( b^2 - 4ac)
------------------------------
2a
-2 ± sqrt( 2^2 - 4*6(-20))
------------------------------
2*6
-2 ± sqrt( 2^2 - 4*6(-20))
------------------------------
2*6
-2 ± sqrt(484)
------------------------------
2*6
-2 ± 22
------------------------------
12
20/12 = 5/3 -24/12 = -2
solutions are 5/3 and -2
Factoring
0=6x^2 +2x - 20
0 =2( 3x^2 +x - 10)
=2 ( 3x-5) ( x+2)
Using the zero product property
3x-5 = 0 x+2 = 0
3x=5 x =-2
x = 5/3 x = -2
Completing the square
y=6x^2 +2x - 20
Add 20
20=6x^2 +2x
Divide by 6
20/6 = x^2 +2/6x
10/3 = x^2 +1/3x
Take the coefficient of x and divide by 2
1/3 /2 = 1/6
Square it
(1/6) ^2 = 1/36
Add it to each side
10/3 + 1/36 = x^2 +1/3x+ 1/36
120/36 + 1/36 = ( x+ 1/6) ^2
121/ 36= ( x+ 1/6) ^2
Take the square root of each side
sqrt(121/ 36) = sqrt( ( x+ 1/6) ^2)
±11/6 = x+1/6
Subtract 1/6 from each side
-1/6 ±11/6 = x
-1/6 - 11/6 = x -1/6 + 11/6 = x
-12/6 =x 10/6 =x
-2 =x 5/3 =x
Graphing
Answer: and Step-by-step explanation:
y=6x² +2x - 20
let a=6
let b= 2
let c = -20
Using Quadratic Formula by hand Using Factoring and the Zero Property Product Using Completing the Square Using Graphing on the Calculator
using Quadratic Formula
-b ± √( b² - 4ac)
2a
-2 ± √( 2² - 4*6(-20))
2*6
-2 ± √( 2² - 4*6(-20))
2*6
-2 ± √(484)
2*6
20/12 = 5/3
-24/12 = -2
the answers are 5/3 ; -2
use by Factoring
0=6x² +2x - 20
0 =2( 3x² +x - 10)
=2 ( 3x-5) ( x+2)
by using the zero product property
3x-5 = 0
x+2 = 0
3x=5
x =-2
x = 5/3
x = -2
by using completing the square
y=6x² +2x - 20 Add 20
20=6x² +2x Divide by 6
20/6 = x² +2/6x
10/3 = x^2 +1/3x Take the coefficient of x and divide by 2
1/3 /2 = 1/6 Square it
(1/6) ² = 1/36 Add it to both side s
10/3 + 1/36 = x² +1/3x+ 1/36
120/36 + 1/36 = ( x+ 1/6)²
121/ 36= ( x+ 1/6)² Take the square root of both side
√(121/ 36) = √( ( x+ 1/6)²)
±11/6 = x+1/6 Subtract 1/6 from both side
-1/6 ±11/6 = x
-1/6 - 11/6 = x
-1/6 + 11/6 = x
-12/6 =x
10/6 =x
x = -2
x = 5/3
by using a graphing computer
Solve the system of equations.
2x + 7y = 3
x= -4y
Answers
Answer:
(12, -3)
Step-by-step explanation:
You can solve it algebraically or graphically. Graphically you find the intersection point. Algebraically with substitution/elimination.
mary won £5000 in a competition .she used the money to pay for herself and 8 friends to go on a holiday. Flights cost £279 for each of them. Accommodation costs £184 for each of them. how much of the £5000 did she have left after paying for flights and accommodation for herself and the 8 friends
Answers
Answer:
the answer is £833
Step-by-step explanation:
Mary have £5000.
8 friends + Mary = 9 people
flight = £279 × 9
= £2511
accomodation = £184 × 9
= £1656
flight + accomodation = £4167
£5000 - £4167
= £833
How do I find f(2) if f(x)=2x-1
Answers
I hope this helps you
let's write 2 for x
f(2)=2.2-1
f(2)=4-1
f(2)=3
0=2x-1
-2x=-1
X= 1/2
[tex] |x + 9| - 4 = 2x[/tex]
Find the find the solutions
Answers
Answer:
x = 5 when x >=-9
Step-by-step explanation:
| x + 9 | - 4 = 2x
x + 9 - 4 = 2x
x - 2x = 4 - 9
-x = - 5
x = 5
x < - 9 no solution
| x + 9 | - 4 = 2x
| -10 + 9 | - 4 = 2(-10)
| -1 | - 4 = -20
1 - 4 = -20
-3 = -20
x >= -9 no solution only x = 5
| x + 9 | - 4 = 2x
| -9 + 9 | - 4 = 2(-9)
| -1 | - 4 = -18
1 - 4 = -18
-3 = -18
The low temperatures for a week in Edmonton, Alberta are -15 C, -12 C, -10 C, -12 C, -18 C, -20 C, and -25 C. What is the mean low temperature for the week? Show your work PLZ
Answers
-15.7
Step-by-step explanation:
2
-15
-12
-10
-12
-18
-20
-25
-------
-110
7 divide by -110=-15.7
what does -11 - (-6) =
Answers
Answer:
-5
Step-by-step explanation:
given the equation y = 2x - 8, find the ordered-pair solution when x = 4 and the ordered-pair solution when y = 4
Answers
Answer:
When x = 4, (4, 0)
When y = 4, (6, 4)
Step-by-step explanation:
To find the ordered-pair solution when x = 4, plug 4 into the x of the equation.
y = 2x - 8
y = 2(4) - 8
y = 8 - 8
y = 0
This produces the ordered pair (4, 0).
To find the ordered-pair solution when y = 4, plug 4 into the y of the equation.
y = 2x - 8
4 = 2x - 8
12 = 2x
6 = x
x = 6
This produces the ordered pair (6, 4).
HELP HELP HELP HELP PLSSS
Answers
Answer:18
I hoped it helped
Answer:
you have to use P.E.M.D.A.S
Step-by-step explanation:
Parentesis, Equation, Multiplication,Divied,Add, Subtracting
whats 2/3x+3/7=1-4/7x
Answers
Answer:
[tex]x=6/13[/tex]
Step-by-step explanation:
So we have:
[tex]\frac{2}{3}x+\frac{3}{7}=1-\frac{4}{7}x[/tex]
Remove all the fractions to make things simpler. To do so, we can multiply by the LCM of the denominators.
The denominators are 3 and 7.
The LCM of 3 and 7 is 21. Thus, multiply everything by 21:
[tex]21(\frac{2}{3}x+\frac{3}{7})=21(1-\frac{4}{7}x)[/tex]
Distribute:
[tex]\frac{42}{3}x+\frac{63}{7}=21-\frac{84}{7}x[/tex]
Simplify the fractions:
[tex]14x+9=21-12x[/tex]
Add 12x to both sides:
[tex]26x+9=21[/tex]
Subtract 9 from both sides:
[tex]26x=12[/tex]
Divide both sides by 26:
[tex]x=12/26[/tex]
Reduce:
[tex]x=6/13[/tex]
And that's our answer :)
Answer: x = 6/13
find the common denominator (21);
14/21x + 9/21 = 21/21 - 12/21x
move your variable to one side and your constants to the other:
26/21x = 12/21
multiply all by 21/26 to get a lone x:
x = 12/26
simplify:
x = 6/13
Simplify each expression 7(9k + 6m)
Answers
Answer:
The correct answer is 63k + 42m.
Step-by-step explanation:
To solve this problem, we must remember how to use the distributive property. The distributive property tells us that if we have a coefficient outside of the parentheses (in this case, 7), we can multiply each term inside the parentheses by this coefficient and add the products together. This is modeled below:
7(9k + 6m)
(7*9k) + (7 * 6m)
63k + 42m
Therefore, the correct answer is 63k + 42m.
Hope this helps!
Explanation: you take 7 and multiple it by 9k and that equals 63k and then you take 7 again and multiply it by 6m and that equals 42m
How do I solve for x?
Answers
2x + 2x + 15 - x +4x - 7 + 9 = 94
8x - x + 17 = 94
7x = 94 - 17
7x = 77 / : 7
x = 11 [ m }
simplify 7 to 6th power to 7 to the 5th power
Answers
So the answer would be 7^11
I hope I’m right and this helps!
Hope this help!
Find EF given E(-7, -2) and F(11, 3). Round your answer to the nearest thousandth (3 decimal places).
Answers
Answer:
18.682
Step-by-step explanation:
Given that :
E = (-7, - 2) ; x1 = - 7 ; y1 = - 2
F = (11, 3) ; x2 = 11 ; y2 = 3
EF = √((x2 - x1)² + (y2 - y1)²)
EF = √((11 - -7)² + (3 - -2)²)
EF = √((11 + 7)² + (3 + 2)²)
EF = √(18² + 5²)
EF = √324 + 25
EF = √349
EF = 18.6815
EF = 18.682 units (3 decimal places )
what is 7vr - (-7rv)=
Answers
Answer:
14vr
Step-by-step explanation:
7vr - (-7rv)=
Subtracting a negative is like adding
7vr + (7rv)=
Changing the order of rv to vr
7vr + (7vr)=
Combing like terms
14vr
Calculate the slope of the line on the graph
Answers
Answer:
3.5 (meters per second)
Step-by-step explanation:
To calculate the slope, we need two points. Let's see if we can select two points from the graph.
From the graph, we can pick out two possible points.
At the beginning, (0,2.5) is a valid candidate.
And at the end, with (5,20). Thus, let's use the slope formula to calculate the slope.
The slope formula is:
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
Let (0,2.5) be x₁ and y₁ and let (5,20) be x₂ and y₂. Thus:
[tex]m=\frac{20-2.5}{5-0}[/tex]
Simplify:
[tex]m=\frac{17.5}{5}\\ m=3.5[/tex]
Thus, the slope is 3.5 meters per second.
Further notes:
And the entire equation will be:
[tex]m=3.5s+2.5[/tex]
write one-half times a number minus 4. use x as a variable
Answers
Answer:
[tex]\frac{1}{2}[/tex]x-4
Step-by-step explanation:
Answer:
1/2 (x)-4
Step-by-step explanation:
Hopes this helps
I have few questions i need help on 1. A student scored 65 marks out of a total marks off 100 in a test, what is his percentage score .
2. if i add 2 to a number and then triple the sum , the result is two times what i get when i add 4 to the number what is the number.
3a. simplify
[tex]1 - (2 \frac{1}{3} \times 1 \frac{1}{4} ) + \frac{3}{5} [/tex]
b Evaluate
[tex] \frac{1}{3} \div ( \frac{5}{7} ( \frac{9}{10} - 1 + \frac{3}{4} ) [/tex]
in this questions i used BODMAS still its saying I'm wrong pls help .
4. Find the sum of three consecutive even numbers if there mean is 24.
5. The sum of four consecutive odd numbers is 72,find the numbers.
6. if when 4 is added to half a number ,the result is 8 , what is the number?
7. change the expression
[tex] \frac{14}{13 - 3} [/tex]
into words .
8. A customer paid 500 naira after a discount of 10% had been allowed. what was the marked price of the article ?
9. a salesman is paid 5% on his first 50 000 naira sales,10% of the next 30 000 naira and 20% of all sales in excess of 80 000 naira . calculate his commision on sales totalling 100 000 naira .
10. Find the multiplicative inverse of the following of each numbers
a 3
b -2
c 5x
11. find the additive inverse of the following
a. + 0.27
b. + 13
c. -6
That's all .
Answers
Answer:
1. His percentage score is 65%
85 out of 200 workers in a building arrive at 8:00 a.m. What percent of workers in the building do NOT arrive at 8:00 a.m.?
Answers
Answer:
57.5 %
Step-by-step explanation:
First find out the number of workers that do not arrive by 8 am
200 -85 = 115
Take this number divided by the total
115/200 = .575
Change to percent form
57.5 %
can someone help me solve this please + ( − )2
Answers
We know that a positive and a negative will end in a negative result. (+) (-) = (-)
Evaluate the following function for x=−4 f(x)=2x+5 A −13 B −3 C 13 D 3
Answers
Answer:
[tex]\huge\boxed{B. \ -3}[/tex]
Step-by-step explanation:
[tex]f(x) = 2x+ 5[/tex]
Put x = -4
[tex]f(-4) = 2(-4) + 5\\f(-4) = -8+5\\f(-4) = -3[/tex]
Julie has a jewlery box shaped like a cube. The volume of the jewlery box is v cubic inches. Write an
expression that represents the edge length of Julie's jewlery box, in inches.
Answers
Answer: ∛v
Step-by-step explanation:
Since we know volume is measured height x width x length, we know the equation we'd use here would be:
___ x ___ x ___ = v in³
If this was area, we would have ___ x ___ = v in², and it would be easy to find each blank. You would just find the square root of "v", making your answer √v.
When you have 3 things multiplied by each other (that are exactly the same, which is the situation here since this is a cube), you will want to find ∛x (if x is our unknown variable). This means that we are finding ONE-THIRD of the number ... sort of. So if x was equal to 8, then ∛x = 2, because 2 x 2 x 2 = 8.
In our situation here, x = v, and since we don't know the actual number, we will keep it as a square root, so the answer to your question is ∛v.
I really hope I was able to explain easy enough, feel free to ask anything else!