Answer:
let the number is x
-2(x-14) = -42
-2x + 28 =-42
-2x = -70
x= 35
Step-by-step explanation:
Help ASAP pls
Three cars are for sale car a £14240 or car b £15870 or car c £11690 The price of car is rounded to the nearest £100. Which price changes by the greatest amount
Answer:
1 st car is your answer to the question
Find an expression which represents the difference when (-8x-8y) is subtracted from (6x+y) in simplest terms.
The expression that represents the difference between the two algebraic expressions given is: 14x + 9y.
What is the Difference of Algebraic Expressions?The difference between two algebraic expressions is simply gotten by subtract one from the other.
Thus, find the difference between the two algebraic expressions, (6x+y) and (-8x-8y).
(6x+y) - (-8x-8y)
Open the bracket
6x + y + 8x + 8y
Combine like terms
14x + 9y
Therefore, the expression that represents the difference between the two algebraic expressions given is: 14x + 9y.
Learn more about algebraic expressions on:
https://brainly.com/question/2164351
Simplify fraction 4/28 and 24/80
Answer:
1. 1/7
2. 3/10
Step-by-step explanation:
4/28 can be divided by 4
24/80 can be divided by 8
A fence for a rectangular garden with one side against an existing wall is constructed by using 60 feet of fencing. What is the maximum area that can be enclosed
Step-by-step explanation:
A fence for a rectangular garden with one side against an existing wall is constructed by using 60 feet of fencing.
Perimeter of rectangle (3 sides)= 60 feet
Let 'x' be the width of the wall
[tex]Perimeter = 2(length)+2(width)\\60=2(length)+2x\\\\60-2x=2(length)\\\frac{60-2x}{2} =length\\Length =30-x[/tex]
Formula for the area of the rectangle is
[tex]Area=length \cdot width\\A=length(x)[/tex]
Replace the length we got using perimeter
[tex]A=(30-x)(x)\\A(x)= 30x-x^2[/tex]
To find out the maximum are we take derivative
[tex]A'(x)= 30-2x\\0=30-2x\\-30=-2x\\x=15[/tex]
find out second derivative to check whether x=15 is maximum
[tex]A''(x)=-2[/tex]
second derivative is negative
So, Maximum area at x=15
To find maximum area we plug in 15 for x in A(x)
[tex]A(x)=30x-x^2\\A(15)=30(15)-15^2\\A(15)=225[/tex]
So, maximum area is 225 square feet
Xian and his cousin Kai both collect stamps. Xian has 52 stamps, and Kai has 72 stamps. The boys recently
joined different stamp-collecting clubs. Xian's club will send him 12 new stamps per month. Kai's club will
send him 8 new stamps per month. After how many months will Xian and Kai have the same number of
stamps? How many stamps will each have?
After
months Xian and his cousin will have
stamps each.
Answer:
Step-by-step explanation:
Let the x be the number of months.
In x months, xian will have:
(52+16x) stamps
and kai will have:
(76+12x)stamps
To find out how many months they will have the same number of stamps, we evaluate the two expressions:
52+16x=76+12x
52+4x=76
4x=24
x=6
So xian and kai will have the same number of stamps after 6 months.
Using either of two expressions, each will have:
52+16(6)=76+12(6)= 148 stamps.
Would appreciate if you could give brainiest have a great day
Answer:
6 months
Step-by-step explanation:
56+ 12x = 80 + 8x
Which operation has to be calculated first in this expression?
7 – (4 + 5)
Answer:
Addition
Step-by-step explanation:
You should add 4 and 5 first because of PEMDAS.
Parentheses
Exponents
Multiplication
Division
Addition
Subtraction
Since 4+5 is in parentheses it should be done first.
Answer:
Addition
Step-by-step explanation:
This the answer because:
1) First, we have to know the Order of Operations
2) An easy way of remembering this is PEMDAS or GEMS
PEMDAS : Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction
GEMS : Grouping (Parenthesis), Exponents, Multiplication and Division (whichever one comes first from left to right), Addition and Subtraction (whichever one comes first from left to right)
3) In this expression, parenthesis would be first because that's what comes first in the order of operations
4) Inside the parenthesis is another expression where you need to add. Therefore, the answer is addition
Hope this helps!
Melissa compares the numbers 0.058 and 0.21. She thinks that 0.058 > 0.21 because 58 > 21 , but the reasoning that Melissa used is incorrect
Answer:
Step-by-step explanation:
What is the answer tho
Write an equation in slope intercept form for the line that passes through the point with the given slope. point: (4,2) and m=3
Answer:
3x/10 - y/10 = 1
Step-by-step explanation:
(y-2)/(x-4)=3
y-2=3x-12
y-3x= -12
3x/10-y/10=1
Which equation is in standard form?
A. -3(x + y) = 10
B. y = 4x + 2
C. 5x –y = 15
D. 0.5x + 6y = 1.9
3. What is the slope of the line x = -5? (1 point)
O Undefined
O 0
O -5
O 5
Answer:
slope is undefined
Step-by-step explanation:
x = - 5 is the equation of a vertical line, parallel to the y- axis.
The slope of a vertical line is undefined.
pt=3x9 and tq=5x-7 because i have no idea what it is
Answer:
i have the same question on my worksheet
Step-by-step explanation: its super hard need help too
Choose the three shapes that have an area of 36 square centimeters.
9cm
12 cm
A
4 cm
D
3 cm
9 cm
12 cm
B.
9 cm
E.
6 cm
6 cm
C.
6 cm
Answer:
6cm
Step-by-step explanation:
Area of a square =
[tex]s^2[/tex]
Where s = one side
s = ?
[tex]A = s^2\\\\36 =s^2[/tex]
Square root both sides
[tex]\sqrt{36} = \sqrt{s^2} \\\\6 =s[/tex]
Which diagram represents a line of symmetry of the regular octagon?
Answer:
B
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
help me if u can q is below
Step-by-step explanation:
C = 25p
p = number of people
C = Total cost of admission
For 4 people, Total cost is
C = 25 × 4 = 100 dollars
Need help ASAP! 20 points:)))
Answer:
Addition Property of Equality
If a, b, and c are any real numbers, and a(b + c) = ab + ac, then (b = c) a = ba + ca.
Its the same dropdown for every question, what is the answer for each one
Answer:
2.5y, y = -5.2
2.5(-5.2) = -13
2x² + y, x = -2, y = 5
2(-2)² + (5)
2(4) + 5
8 + 5 = 13
a(b), a = 2/3, b = 9/14
(2/3)(9/14)
cross simplify
(1/1)(3/7) = 3/7
Rewrite terms that are subtracted as addition of the opposite. g2 + (–4g4) + 5g + 9 + (–3g3) + 3g2 + (–6) Group like terms. Combine like terms. Write the resulting polynomial in standard form.
Answer:
-4g^4 -3g^3 + 4g^2 +5g +3
Step-by-step explanation:
g^2 + -4g^4 +5g +9 -3g^3 + 3g^2 -6
-4g^4 -3g^3 + 4g^2 +5g +3
Answer:
B
Step-by-step explanation:
−15 = 5(3q − 10) − 5q
Answer:
q = 3.5
Step-by-step explanation:
-15 = 5(3q - 10) - 5q
-15 = (5*3q + 5*-10) - 5q
-15 = 15q - 50 - 5q
-15 + 50 = 15q - 5q
35 = 10q
q = 35/10
q = 3.5
Check:
-15 = 5(3*3.5 - 10) - 5*3.5
-15 = 5(10.5 - 10) - 17.5
-15 = 5*0.5 - 17.5
-15 = 2.5 - 17.5
Ella is buying a $110 chair. She has a coupon for 15% off. How much does she pay for the chair if sales tax is $6
Answer: the answer should be 99.5
samir had 2 apples , he ate 1 how many are left
Answer:
1
Step-by-step explanation:
There was 2 apples. He ate 1.So 2-1=1.
1 apple is left.
Answer: 1
Step-by-step explanation: 2-1=1
Help, please find errors!
Everything looks great. The only issue I see is that 27 is a bit smudged. I think you were trying to say "A, B and E" (in any order you want). If so then that would be the correct answer.
I need help with this math problem please
Answer:
65 -3x = 55 -2.5x20 periods$5Step-by-step explanation:
The value of the first card starts at $65 and decreases by $3 for each of x periods. Its value is ...
65 -3x
The value of the second card starts at $55 and decreases by $2.50 for each of x periods. Its value is ...
55 -2.5x
The equation that can be used to find x that makes the values equal is ...
65 -3x = 55 -2.5x
__
The solution can be found by adding 3x-55 to both sides of this equation.
10 = 0.5x
Multiplying by 2 gives ...
20 = x
After 20 30-day periods. the cards will have the same value.
__
The value after 20 periods is ...
65 -3×20 = 65 -60 = 5
Both cards will have a value of $5 when they have the same value.
Can someone answer all these for me please
applying the properties of operations, what is the value of the expression?
Answer:
What expression are we supposed to be answering this for?
Answer:
i think it is 3.875
Step-by-step explanation:
i'm so sorry if it's incorrect; good luck anyways :)
4x²-9y²-6x-9y Factorize
Answer:
Step-by-step explanation:
URGENT PLS HELP
BD bisects ABC. Find each of the following
1. Find the measure of angle ABD if the measure of angle ABD = 6x + 4 and
the measure of angle DBC = 8x - 4
2. Find the measure of angle ABC if the measure of angle ABD = 5y - 3 and the
measure of angle DBC = 3y + 15.
Use elimination to solve and match each system of equations to the correct solution. 3x+y=11 5x-y=21 Help with this one I’ll give u brainliest
Answer:
Step-by-step explanation:
3x + y = 11
5x - y = 21
8x = 32
x = 4
3(4) + y = 11
12 + y = 11
y = -1
(4, -1)
BRAINLIEST TO THE FIRST 2 TO ANSWER
Answer:
ab + b²-ac-bc
b(a+b) -c(a+b)
(a+b) (b-c)
Step-by-step explanation:
Answer:
C. (b-c)(a+b)
Step-by-step explanation:
This i s because there is a positive b squared in the expanded equation so both brackets had to have had a positive b term in them.
(b-c)(a+b) expanded:
ab +b^2 -ac -bc
Hope this helped!
Li’s family is saving money for their summer vacation. Their vacation savings account currently has a balance of $2,764. The family would like to have at least $5,000.
Which inequality can be used to determine the amount of money the family still needs to save?
Answer:
B is the answer ppl Answer B hope it help you all ^U^
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
cause i said so have a problem call my lawyer......
Put the following fractions in order of size starting with the one with the least value 5/16 1/2 3/4 5/8 1/4
Answer:
1/4, 5/16, 1/2, 5/8, 3/4
Step-by-step explanation:
Answer:
1/2 1/4 3/4 5/8 5/16 this is the right answer s