Answer:
Option C
Step-by-step explanation:
Option A:[tex]4(-1)+9=20\\\\-4+9=20\\\\\boxed{5\neq 20}[/tex]Option B:[tex]-4(-1)-5=-15\\\\4-5=-15\\\\\boxed{-1\neq -15}[/tex]Option C:[tex]-3(-1)+15=18\\\\3 + 15 = 18\\\\\boxed{18=18}[/tex]
Option C is the correct answer.
Option D:[tex]-5(-1)-15=-22\\\\5-15=-22\\\\\boxed{-10\neq -22}[/tex]
Hope this helps.
For the value of x = - 1, the correct equation is,
⇒ - 3x + 15 = 18
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
The value of x is,
⇒ x = - 1
Now, Substitute the value of x in all equations and check the correct equation.
For equation 3;
⇒ - 3x + 15 = 18
Substitute x = - 1 ;
⇒ -3×-1 + 15 = 18
⇒ 3 + 15 = 18
⇒ 18 = 18
Thus, The correct equation is,
⇒ - 3x + 15 = 18
Learn more about the mathematical expression visit:
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22 Evaluate the expression for x = 2
3x2 + 6
23 Evaluate the expression for x = 5
x -(-5)
It’s the 22 and 23 at the bottoms
ASAP WILL GIVE 20 POINTS
Answer:
22. 18
23. 10
Step-by-step explanation:
22
you plug the number for the variable into the equation (3(2)²+6order of operations say exponents first so you do 2²=4 so you have 3(4)+6then you multiple 3•4=12 so 12+6finally you add 12+6=1823
plug in the number for the variable so 5–(-5)so a negative and a minus will make it addition (negative + negative = positive)do it is 5+5 which equals 10What is the rate of change of the table shown?
A)5
B)2
C)-5
D)-2
75 Points! Don't waste my time for points or you will be reported. Looking for math experts.
On a coordinate grid, point A is at (−2.0, −3.4) and point B is at (2.0, −3.4). Point B is a reflection of point A across the ___–axis. Input either a lowercase x or y.
Answer:
y
Step-by-step explanation:
CONSTANT TERMS
7k-8k
Answer:
1k
Step-by-step explanation:
If you can explain it a little better I could give you a better response. If it is multiple choice please provide the answer choices.
Use the following stem-and-leaf plot to answer the question.
What is the median?
The median of the stem-and-leaf plot is 23
In Mr. Britt's class the distribution of ages of his students has a mean of 115 months and a standard
deviation of 3.6 months.
If no students leave or join the class, what will be the mean and standard deviation of the distribution of
student's ages 4 months later?
Using statistical concepts, it is found that the mean will be of 119 months, while the standard deviation will be of 3.6 months, given by option C.
-------------------------------------
The mean of a data-set is the sum of all values divided by the number of values.The standard deviation is the square root of the sum of the difference squared of each observation and the mean, divided by the number of values.If x is added to all values of a data-set, it is also added to the mean, while the standard deviation remains constant.-------------------------------------
Mean of 115 months and standard deviation of 3.6 months.4 months later is the same as adding 4 to each observation.Thus, the mean will be of 115 + 4 = 119 months, while the standard deviation remains constant at 3.6 months.A similar problem is given at https://brainly.com/question/20640860
Answer:
Mean: 119119119 months
Standard deviation: 3.63.63, point, 6 months
Step-by-step explanation:
What is the factored form of 5x − 625x4?
A.
5x(1 + 5x)(1 − 5x + 25x2)
B.
5x(1 − 5x)(1 + 5x + 25x2)
C.
(1 − 5x)(1 + 5x + 25x2)
D.
(1 + 5x)(1 − 5x + 25x2)
Answer:
B)
Step-by-step explanation:
Answer:
I think b
Step-by-step explanation:
if the slope of BC is 1/2 what is the slope of AC
Answer:
See Explanation
Step-by-step explanation:
The question is incomplete.
However, I'll answer base on the following assumptions.
1. AC and BC are parallel.
2. AC and BC are perpendicular
For (1)
Parallel lines have equal slopes.
So, AC = BC = ½
For (2)
Slope of perpendicular line is:
m1 * m2 = -1
Take m1 as slope of BC
So, we have
½ * m2 = -1
Solve for m2
m2 = -1/½
m2 = -1 * 2
m2 = -2
Hence, the slope of AC is -2
In finding the solution of the equation 5-3x=2x+9, 3x is added to both sides of the equation first. Which of the following should be done next?
A. add -9
B. add -5
C. add =2x
Answer:
A add -9
Step-by-step explanation:
After this you should add -9 to bring it over to the left side.
The 6 is in the tenths place.
Answer: 0.6
Step-by-step explanation: 6 in the tenths place means 0.6.
Answer:
the tenths place. 7
Step-by-step explanation:
i need help and someone quick 5m < ABC=540
Answer:
Step-by-step explanation:
So abc = 789.0
n-3. Evaluate the algebraic expression when n=5
A. 2
B. 8
C. 5
D. 5/3
Answer:
D
Step-by-step explanation:
Answer:
A. 2
Step-by-step explanation:
if n=5 then the expression is 5-3 which is equal to 2.
What is the x-intercept of the graph?
A) -4
B) -3/2
C) 2/3
D) 6
Option D, 6 is the correct answer
Answer:
c
Step-by-step explanation:
help will give crown only REAL ANSWERS COMMENT IF YOU HAVE A QUESTION
Answer:
A
Step-by-step explanation:
In that example the plane is going up constantly whereas in example B the plane in going down, in example C the plane it going up but the stops and goes at the same speed, and in D the plane it once again going down.
Cell theory has three parts: The cell is the basic unit of life in all living things, all cells come from existing cells, and ______________.
A.
nonliving things are composed of cells
B.
the cell was discovered by Robert Hooke
C.
all organisms are made of one or more cells
D.
all cells are microscopic in size
---
this is not math lol it's science
---
don't answer if ur not sure pls
Answer:
C.
Step-by-step explanation:
All living things are made of one or more cells.
Can I get brainliest pls?
What do YOU think about LOVE?
Answer: it amazing
Step-by-step explanation:
What would be the answer for 75 X 152
Answer:
75 x 152 = 11,400.
Step-by-step explanation:
75 times 152 equals 11,400. You can find this by using a calculator, or you can multiply it out by hand. There's lots of videos on how to multiply things by hand, if you wanted to learn how. Hope this helps! :)
can anyone help me please
Answer:
i think it is x= -4/3
Step-by-step explanation:
maybe
Answer:
x=10
Step-by-step explanation:
2x/3+1=7x/15+3
find a common denominator for the fractions=15
2x/3 =_/15 multiple by 5 to get denominator 15 so multiple by 5 on top as well 2x*5=10x
10x/15+1=7x/15+3
-7x/15 -7x/15
3x/15+1=3
-1 -1
3x/15=2
×15/3 ×15/3
x=30/3
Reduce
x=10
What’s the answer?????
need help asap ! thanks
What is the answer to the meaning of life, the universe, and everything
Answer:
no idea
Step-by-step explanation:
Answer:
42
Step-by-step explanation:
The answer to this question is 42 this is calculated by a super computer named deep for over 7.5 million years.
I WILL AWARD BRAINLIEST!! PLEASE HELP!!
Given: AC = AB, CD = DE
m∠ABC = 70°, m∠ ECB = 35°
Prove: DE ║BC
m∠ACB = m∠______, By reason ( Base angles theorem, Exterior Angle theorem, Supplementary angles, Vertical Angles theorem ) - choose one
Answer:
a)[tex]\angle ACB = \angle ABC[/tex] By Base angle theorem
b)DE||BC since[tex]\angle DEC=\angle ECB[/tex] and they are alternate interior angles
Step-by-step explanation:
Given: AC = AB, CD = DE
∠ABC = 70°, m∠ ECB = 35°
Refer the attached figure
AB = AC
So, By Base angle theorem : if the sides of a triangle are congruent then the angles opposite these sides are congruent.
So, [tex]\angle ACB = \angle ABC[/tex]
So,[tex]\angle ACB = \angle ABC =70^{\circ[/tex] ----1
CD = DE
So, by Base theorem
[tex]\angle DCE = \angle DEC[/tex]
Let [tex]\angle DCE[/tex] be x
So,[tex]\angle DCE = \angle DEC[/tex]
[tex]\angle ACB= \angle DCE+\angle ECB = x+35[/tex]
Using 1
70 = x+35
35=x
[tex]\angle DCE = \angle DEC =35^{\circ}[/tex]
Now[tex]\angle DEC=\angle ECB=35^{\circ}[/tex]
So, DE||BC since[tex]\angle DEC=\angle ECB[/tex] and they are alternate interior angles
Solve the equation algebraically |x|=12
Answer:
x = 12
Step-by-step explanation:
Absolute value is the distance between the number and 0. Since distance cannot be negative, the absolute value of something is always going to be positive. In this equation | x | = 12 since 12 is already a postive number and the distance between 12 and 0 is 12, this means that x is equal to 12.
Hope This Helps :)
HELP ME HELP ME please !!! 10 points
Answer:
The slope is [tex]\frac{3}{2}[/tex]
The y-intercept is 9
Step-by-step explanation:
The form of the equation that passes through two points (x1, y1) and (x2, y2) is y = m x + b, where
m is the slope of the line whose rule is [tex]m=\frac{y2-y1}{x2-x1}[/tex] b is the y-intercept, you can find it by substituting x, y in the equation by (x1, y1) OR (x2, y2)Let us solve the question:
Choose any two-point from the table
∵ The line passes through the points (2, 12) and (4, 15)
∴ x1 = 2 and x2 = 4
∴ y1 = 12 and y2 = 15
→ Use the rule of m to find it
∵ [tex]m=\frac{15-12}{4-2}=\frac{3}{2}[/tex]
∴ m = [tex]\frac{3}{2}[/tex]
∴ The slope is [tex]\frac{3}{2}[/tex]
→ Substitute its value in the form of the equation above
∴ y = [tex]\frac{3}{2}[/tex] x + b
→ To find b substitute x and y by x1 and y1
∴ 12 = [tex]\frac{3}{2}[/tex] (2) + b
∴ 12 = 3 + b
→ Subtract 3 from both sides
∴ 12 -3 = 3 - 3 + b
∴ 9 = b
∴ The y-intercept is 9
What is the value of 3,520 × 10³
Answer:
Actually, it's 324670
Step-by-step explanation:
Solve for m
y= 4mx – 5
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[tex]y = 4mx - 5[/tex]
Add sides 5
[tex]y + 5 = 4mx - 5 + 5[/tex]
[tex]y + 5 = 4mx[/tex]
[tex]y + 5 = m \times (4x)[/tex]
Divide sides 4x
[tex] \frac{y + 5}{4x} = \frac{m \times 4x}{4x} \\ [/tex]
[tex] \frac{y + 5}{4x} = m \\ [/tex]
[tex]m = \frac{y + 5}{4x} \\ [/tex]
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As an accountant, you have calculated income taxes for a customer for the last 3 years. During those three years, the customer made a tax payment of $1,250, received a tax refund of $550, and made a tax payment of $925. The customer also paid a processing fee of $60 each year.
Answer:
The total amount customer paid during those 3 years is $1685
Step-by-step explanation:
We are supposed to find the total amount customer paid during those 3 years
Customer made a tax payment = $1250
He received a refund of amount = 550
So, amount paid by him = 1250-550
Amount paid by him ==700
Now again He made a tax payment = $925
Processing fee = $60
So, Total Amount paid by him =700+925+60
Total Amount paid by him =1685
Hence the total amount customer paid during those 3 years is $1685
The packages of wrapping paper cost $2.75 per package. At the last moment, Sally notices gift bags that cost $4. 99. Is it cheaper to wrap the CD or put it in a gift bag? Explain your answer.
Answer:
It would be cheaper to wrap the CD in wrapping paper
Step-by-step explanation:
$2.75 is cheaper than $4.99
So $2.75 is cheaper than $4.99 by $2.44
To which subset numbers does the following number belong?
In a sequence of numbers, a3=0, a4=4, a5=8, a6=12, and a7=16. Based on this information, which equation can be used to find the nth term in the sequence, an?
Answer: aₙ = -12 + 4*n
Step-by-step explanation:
We know that:
a₃ = 0
a₄ = 4
a₅ = 8
a₆ = 12
a₇ = 16
This seems to be an arithmetic sequence.
To test this, we need to calculate the difference between any two consecutive terms in the sequence, and this must be a constant for any pair that we choose.
a₄ - a₃ = 4 - 0 = 4
a₅ - a₄ = 8 - 4 = 4
a₆ - a₅ = 12 - 8 = 4
etc
we can conclude that this is an arithmetic sequence.
The n-th term in an arithmetic sequence, where the increase between consecutive terms is 4, is:
aₙ = aₙ₋₁ + 4.
Another way is:
aₙ = a₀ + n*4.
Where to find a₀, we can start with the value that we know and go back:
a₂ = a₃ - 4 = -4
a₁ = a₂ - 4 = -8
a₀ = a₁ - 4 = -12
Then the n-th term can be written as:
aₙ = -12 + 4*n