Answer:
40
Step-by-step explanation:
100 /5 = 20
20*2= 40
40%
(-4x + 5)-( 6x +7)=0
Answer:
x = -1/5
Step-by-step explanation:
*Steps as a proof*
_________
(-4x + 5)-(6x + 7) = 0
[given]
_____________
1(-4x + 5)-1(6x + 7) = 0 [identity property of multiplication]
1(-4x + 5) + -1(6x + 7) = 0. [additive inverse property]
___________________________________
1(-4x + 5) + -1(6x) + -1(7) = 0 [distributive property]
___________________________________
(-4x + 5) + (-6x - 7) = 0 [multiplying anything by 1 is the same]
___________________________________
(-4x + -6x) + (5 + -7) = 0 [associative property of addition]
_____________________________________
-4x + -6x + (5 + -7) = 0 [subtraction property of equality] - (5 + -7). - (5 + -7)
_______________________
-4x + -6x = -(5 + -7) [simplification]
-4x + 6x = -1(5 + -7) [identity property of multiplication]
-4x + -6x = -1(5) + -1(-7) [distributive property]
-4x + -6x = -5 + 7 [simplification]
-4x + -6x = 2 [simplification]
-10x = 2 [division property of equality]
÷10 ÷10
______
-x = 2/10 [negative one property of multiplication]
×-1 ×-1
x = -2/10 [simplification]
x = -1/5 [simplification]
__________________________
Please help me. I have no idea how to solve this.
Answer:
its either D or C
Step-by-step explanation:
A makes no sense because u only moving 2 and for B too and E it not it
Given ∠A and ∠B are vertical angles with m∠A=20x+10 and m∠B=30x−10 .
What is x?
Enter your answer in the box.
ILL GIVE BRAINLIEST THANK YOU
Answer:
since angle a and b are vertical angles
therefore we can say that,
i) <A=<B
or,20x+10=30x-10
or,10+10=30x-20x
or,20=10x
.°. x=10.
Answer:
9
Step-by-step explanation:
. Uno de los problemas ambientales es la escasez de agua para proveer de agua a una comunidad, se necesitan 3846 metros de
Tuberia, y cada tubo mide 6 metros de largo. ¿Cuantos tubos se necesitan?
Answer:
n = 641
Step-by-step explanation:
Pipe required to provide water is 3846 m
Length of each pipe is 6 m
We need to find the no of tubes required. Let there are n tubes. It can be calculated as follows :
[tex]n=\dfrac{3846 }{6}\\\\n=641[/tex]
Hence, 641 tubes will be needed.
what is the slope of the line
Answer:
The slope is 1/2.
Step-by-step explanation:
To find the slope of a line, use the equation (y2-y1 / x2-x1)
Let's say (4,3) is x2 and y2. That means (0,-2) is x1 and y1.
(3 - 0) / (4 - -2)
(3 - 0) / (4 + 2)
3/6, which simplifys to 1/2
A line has a slope of -3 and passes through the point (-3, 8). What is the equation of the line?
o y=-3x+6
o y--3x+8
o y=bx-
o y=8x-3
Answer:
y= -3x + 8
Step-by-step explanation:
start with the value of 25, double it, and then calculate the percent increase.
Answer: 100%
Step-by-step explanation:
If you start with 25 and double it you will get 50 and 25 is half of 50 so the percent increase will be 100%.
image attached below
Answer:
1) Expression
2) Equation
3) Equation
4) Expression
Step-by-step explanation:
An equation always contains an equal sign, so in this case, if it doesn't contain an equal sign, it's an expression.
For 2 and 3, you can see that there is an equal sign, but for 1 and 4, there is not.
Therefore, 1 and 4 are expressions and 2 and 3 are equations.
I hope this helped.
5x+2(x+3) is an expression
5x=2(x+3) is an equation
8m-3m+5=16 is an equation
8m-3m+5-16 is an expression
An equation always and I mean ALWAYS uses a = sign.
An expression is a combination of numbers and variables and symbols.
Hope that's useful
In one day's work at the nursery, Dale and Mary together potted 74 plants. If Dale potted 48, how many did Mary pot?
Answer: 26
Step-by-step explanation: Assuming this a regular subtraction, 26
What is the difference (2 x minus 3) minus (x minus 1)?
Answer:
2x - 3 - (x-1)
2x - 3 -x +1
x-2
Answer:
x-2 or B. if you're on edgSimplify -|-5 + 2|
7, 3, -7,-3
Answer:
-3
Step-by-step explanation:
Determine weather or not the following is a function:{-2,9)
Answer:
THis is a function
Step-by-step explanation:
Each x value corresponds to one y-value. It is a function.
Ian and Ruth volunteer at the community center. Ian works every fifth day and Ruth works every seventh day. They both worked on Wednesday, October 24th. What is the DATE when they will work together again?
Answer:
11/29/2020
Step-by-step explanation:
Every seventh and fifth day, both numbers are prime, 5 x 7 = 35, so 35 days after October 24th is November 29th because October has 30 days.
In order to know that a graph shows a proportional relationship WITHOUT finding any y/x ratios or doing division, two conditions must be met. Name ONE of the two ways you know a graph is proportional JUST BY LOOKING AT IT. (You will come across another question that asks you to name the other condition, if you haven't already.) (10 points) please help
Answer:
I wish I've known, but try using Symbo-Lab or Math-Way. They help a lot.
Step-by-step explanation:
PLEASE HELP MEEEEEEEEEEEEEEEEEEEEE
Answer:
D
Step-by-step explanation:
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition SubtractionStep 1: Write expression
[tex](\frac{7}{2}-\frac{1}{3} )(-2)^2+\frac{1}{2}[/tex]
Step 2: Evaluate
Exponents: [tex](\frac{7}{2}-\frac{1}{3} )(4)+\frac{1}{2}[/tex]Parenthesis: [tex](\frac{19}{6} )(4)+\frac{1}{2}[/tex]Multiply: [tex]\frac{38}{3} +\frac{1}{2}[/tex]Add: [tex]\frac{79}{6}[/tex]Answer:
13 1/6
Step-by-step explanation:
Follow PEMDAS:
(7/2-1/3) * (-2)^2 +1/2
P: parenthesis... 7/2 - 1/3 is 19/6
then you do E: exponents... (-2)^2 is basically -2 * -2 which a negative multiplied by a negative is a positive so its 4.
19/6 * 4+1/2
PE M DAS... M: multiply... 19/6 *4 is 38/3 which simplifies to 12 2/3
Lastly you add 12 2/3 with 1/2 and you get 13 1/6
8 – 3(k + 2) = 2 – 3k
Answer:
the answer is 0
Step-by-step explanation:
you distribute the 3 which gives
8 - 3k - 6 = 2 - 3k
then you combine like terms and end up with
2 - 3k = 2 - 3k
then you subtract 2 on each side which gives
- 3k = - 3k
and then when you have to keep combining like terms so you add the 3k on both sides which gives u 0
image 1
image 2
image 3
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HELP HELP HELP ASAP!
Solve the following system of equations using the substitution method.
y = x – 1
2x – 3y = –1
Question 19 options:
A)
(4,5)
B)
(3,4)
C)
(4,3)
D)
(5,4)
Answer:
b
Step-by-step explanation:
Answer: Its C (4,3)
Step-by-step explanation: I did the math.
What is the slope of the line
Answer:
-3/4x
Step-by-step explanation: Since the line going top left to bottom right you know that it is a negative slope. Remember to do rise over run. It's easier if you start at a point like (1, -1) and then rise up 3 and run left 4.
One factor of the polynomial 2x3 -3x2 – 3x + 2 is (x - 2), which expression represents the other factor, or factors, of the polynomial?
A. (2x + 1)(x - 1)
B (2.x2 - x+ 1)
C (2x2 + 1)
D. (2x - 1)(x+1)
Answer:
It's actually D (2x - 1)(x+1)
Step-by-step explanation:
The required factor of the polynomial 2x³ - 3x² - 3x + 2 is (2x - 1)(x + 1).
Given that,
One factor of the polynomial 2x3 -3x2 – 3x + 2 is (x - 2), which expression represents the other factor, or factors, of the polynomial is to be determined.
What are the factors?
factors can be defined by splitting the value into multipliable values.
The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.
Here,
x - 2 is one factor of 2x³ - 3x² - 3x + 2 than
( 2x³ - 3x² - 3x + 2 ) / x - 2 = 2x² + x -1 = (2x - 1)(x + 1)
Thus, the required factor of the polynomial 2x³ - 3x² - 3x + 2 is (2x - 1)(x + 1).
Learn more about Factors here:
https://brainly.com/question/24182713
#SPJ2
In the triangle above, a = 34 a=34a, equals, 34. What is the value of b + c b+cb, plus, c ?
Answer:
c6
Step-by-step explanation:
ANSWER ASAP WILL GIVE EXTRA POINTS AND BRAINLIEST
Answer: 2/7 will be more
Step-by-step explanation:2/7 times 11 each then gets 22/77 then 3/11 times 7 gives it 21 over 77 22 is more than 21
Answer:
common denom is 77 so 2/7=22/77 and 3/11=21/77
>
8 points if answered!!
Identify the set of numbers that makes up the domain in the relation {(-2,-3),(0 ,2), (2, 4) ,(3, -6)}
A. -2, 0, 2, 3
B.-2, 0, 3, 4
C. -6,-2, 2, 4
D. -6, -2, 0, 2, 3, 4
what is the answer? pls help
Answer:
Undefined
Step-by-step explanation:
The x value is always 5 so the slope is undefined
Answer:
The slope of the line is undefined.
Step-by-step explanation:
To solve this problem, we should use the formula for slope, which is given below:
m = slope = (y2-y1)/(x2-x1)
If we plug in two of the points that are given in the table, we get:
m = slope = (6-3)/(5-5)
If we perform the subtraction in the parentheses in both the numerator and the denominator, we get:
slope = 3/0
Since we cannot divide by 0, this means the slope is undefined.
Hope this helps!
It cost $5000 to feed
100 guest at a wedding. It
cost $2750 to feed 45
guests. What is the cost
per plate?
Answer:
Okays so for 100 guests we can make the equation $5000 ÷ 100 = $50.00
For 100 guests at the wedding it would cost $50.00 per plate
For 45 guests we can make the equation $2750 ÷ 45 = $61.111111111111, it would be a repeating decimal
For 45 guests at the wedding, it would cost $61.111111111111
I hope that this can help you! ^‿^
Find the slope of each line.
Answer:
the slope of that line is 3/4
Tiva earns $48 for 6 hours of babysitting.
Complete each statement if Tiva keeps earning her babysitting money at this rate.
For 8.5 hours of babysitting, Tiva will earn $___
If Tiva babysits for___ hours, she will earn $32.
Answer:
a. 68$ b. 4 hrs
Step-by-step explanation:
-Find how much she earns in 1hr
48$/6h = 8$/h
a. 8.5 * 8 = 68$
b. 32$ : 8 = 4 hours
Answer:
A.)68
B.)32
Step-by-step explanation:
For 8.5 hours of babysitting, Tiva will earn $ 68
If Tiva babysits for 4 hours, she will earn $32.
HELP HELP HELP HELP!!!
Answer:
If Kasey bought one drink, she will be able to buy 6 food items
Step-by-step explanation:
We know Kasey has $8 and if she bought one drink, she will have $7.5
We have to find how many food items she can buy (all of them are $1.25)
$7.5/1.25= 6 food items
If Kasey bought one drink, she will be able to buy 6 food items
Hope this helps!
Answer:
6 items
Step-by-step explanation:
8.00 - 0.50 = 7.50
She has $7.50 to spend on food after buying one drink
7.50 ÷ 1.25 = number of food items she can buy
7.50 ÷ 1.25 = 6
Identify if the given sequence is an arithmetic sequence or not. Explain your
answer.
a.) 2, 8, 14, 20, …
b.) 9, 13, 17, 20, 23, …
Answer:
a is arithmetic sequence.
Step-by-step explanation:
option a is an arithmetic sequence because we use d=t2-t1 formula
so like wise,
8-2=6
14-8=6
20-14=6
