I need help with 1-3 I just don’t understand how to do it at all please help
Answers
-if a=band b=c, then a=c
2.Add
3.Subtraction Property of Equality
Hope this helps
Related Questions
The cost of a pair of jeans was changed from $78 to $68.64. What was the percent change?
Answers
Answer:
-12.00%
Step-by-step explanation:
;)
Answer:
12% decrease
Step-by-step explanation:
What is the remainder when 4x4 − 10x3 + 14x2 + 7x − 19 is divided by 2x − 1
Answers
___________________
2x-1 | 4x^4-10x³+14x²+7x-19
Next, we divide the first term of 2x-1 by the first term of 4x^4-10x³+14x²+7x-19 to get 4x^4/2x=2x³ (since 4/2=2 and to divide exponents you subtract the denominator from the numerator). Next, we put our 2x³ on the top and multiply (2x-1) by that. With the result of (2x-1) and 2x³, we multiply that by -1 and add it to 4x^4-10x³+14x²+7x-19, looking like
2x³
___________________
2x-1 | 4x^4-10x³+14x²+7x-19
- (4x^4-2x³)
____________________
-8x³+14x²+7x-19. Repeating the process, we get
2x³-4x²+5x+6
___________________
2x-1 | 4x^4-10x³+14x²+7x-19
- (4x^4-2x³)
____________________
-8x³+14x²+7x-19.
-(-8x³+4x²)
______________________
10x²+7x-19
-(10x²-5x)
__________
12x-19
-(12x-6)
_________
-13 as our remainder
The remainder when [tex]4x^4 - 10x^3 + 14x^2 + 7x - 19[/tex] is divided by 2x − 1 is -13.
The given expressions are [tex]4x^4 - 10x^3 + 14x^2 + 7x - 19[/tex] and 2x-1.
What is the remainder?The Remainder is the value left after the division. If a number (dividend) is not completely divisible by another number (divisor) then we are left with a value once the division is done. This value is called the remainder.
The division of the given expressions are given below:
2x³-4x²+5x+6
___________________
2x-1 | [tex]4x^4 - 10x^3 + 14x^2 + 7x - 19[/tex]
- ([tex]4x^4-2x^3[/tex])
____________________
-8x³+14x²+7x-19.
-(-8x³+4x²)
______________________
10x²+7x-19
-(10x²-5x)
__________
12x-19
-(12x-6)
_________
-13
Therefore, the remainder when [tex]4x^4 - 10x^3 + 14x^2 + 7x - 19[/tex] is divided by 2x − 1 is -13.
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You can use a minus sign to make a negative number like -2. what happens if you put a plus sign before a number? what about 2++2?
Answers
Final answer:
A plus sign before a number does not change its value. In the expression 2++2, the two plus signs next to each other are interpreted as a positive number followed by another positive number.
Explanation:
When you put a plus sign before a number, it doesn't change the value of the number.
The plus sign is just a symbol to indicate that the number is positive.
In the expression 2++2, the two plus signs next to each other are not a valid mathematical operation.
Instead, it is interpreted as a positive number followed by another positive number.
So, 2++2 is equal to 2+2, which is 4.
A car travels 252 miles in 5 hours and 15 minutes. how many miles does it travel per hour?
Answers
Answer:
48 miles per hour
Step-by-step explanation:
5hrs and 15minutes = 315minutes
If 252 = 315
x = 60
By cross multiplication
315x = 60 * 252
315x = 15,120
x = 15120/315
x = 48 miles per hour
The table gives the numbers of teachers and students in grades 6 to 8 at Earhart Middle School. Grade Teachers Students 6 1 25 7 2 50 8 3 75 Which teacher-to-student ratio maintains the proportional relationship described in the table?
Answers
Grade Teachers Students
6 1 25
7 2 50
8 3 75
Grade 6 to 8 all maintained the same proportional relationship because for every one teacher, there's 25 students
Which shape has congruent diagonals? Question options:
a rectangle
a parallelogram
a trapezoid
Answers
Because some angles are more out than others in Parallelograms and trapezoids, their diagonals aren't congruent.
An equilateral triangle has a perimeter of 102 in. What is the length of each side of the triangle?
Answers
Identify the slope and y intercept in this statement "it takes 45 minutes to paint 2 rooms. you have all ready painted for 45 minutes.
Answers
The y-intercept is (0,42)
While catching fireflies, you and a friend decide to have a competition. After mm minutes, you have (3m+13)(3m+13) fireflies and your friend has (4m+6)(4m+6) fireflies.
a. How many fireflies are caught each minute during the competition?1m+7 fireflies are caught per minute.
b. How many fireflies are caught before the competition starts? fireflies are caught before the competition starts.
Answers
Answer: the equation is 7m + 19
Step-by-step explanation:
what is thirty five percent of two hundred
Answers
2 * 35 =
70
Which is correct regarding the statement: “If x is an odd integer, then the median of x, x + 2, x + 6, and x + 10 is an odd number”
Answers
the median is the number in the middle when the numbers are arranged in increasing order
if there are an even number of numbers in the set, take the average of the middle 2
we have x,x+2,x+6,x+10
there are 4 numbers, so the median will be the avergage between x+2 and x+6 which is [tex]\frac{x+2+x+6}{2}=\frac{2x+8}{2}=x+4[/tex]
now, if x is odd, then replace x with 2n+1
(2n+1)+4=
2n+1+4=
2n+5=
2n+2(1)+1
even+even+odd=odd
the statement is true
x+2 is also odd (eg: x = 3, so x+2 = 3+2 = 5)
x+6 is also odd for similar reasons above
x+10 is also odd
We have four values. The median is found in the middle, so exactly halfway between x+2 and x+6
Add up x+2 and x+6 to get
(x+2)+(x+6) = 2x+8
Then divide that result by 2. In other words, divide everything by 2
2x/2+8/2 = x+4
The result x+4 is odd since adding any even number to an odd number is going to result in an odd value
So the claim is true
--------------------------------------------------------------------------------
Alternative method:
x is odd so x = 2k+1 where k is any integer
x+2 = 2k+1+2 = 2k+3
x+6 = 2k+1+6 = 2k+7
x+10 = 2k+1+10 = 2k+11
Add up the two middle terms
(x+2)+(x+6) = (2k+3)+(2k+7) = 4k+10
Divide that result in half
4k+10 ---> 4k/2 + 10/2 = 2k+5 = 2k+4+1 = 2(k+2)+1
The expression 2(k+2)+1 fits the form 2m+1 where m = k+2 is an integer
So 2(k+2)+1 is odd making the median to be odd.
This further helps support why the claim is true
If their food and beverages cost $25.30 and there is an 8% meals tax
Answers
Tax = 8% x $23.50
= $18.80
End cost = $25.30 + $18.30
= $44.10
Hope this helps :))
~Top
Answer:
Then they'll pay $27.32
Step-by-step explanation:
In order to determine this, start by multiplying the cost of the meal by the tax amount.
25.30 * 8% = 2.02
Now add the tax to the meal cost
25.30 + 2.02 = 27.32
3 different problems, sorry these type confuse me
f(x) = 5x - 1 and g(x) = 6x, find f(g(x))
f(x) = 5x - 1 and g(x) = 6x, find g(f(x))
f(x) = 5x - 1 and g(x) = 6x, find g(f(2))
Answers
= 5(6x) - 1
= 30x - 1
g [f(x)]
= 6(5x - 1)
= 30x - 6
g [f (2)]
= 6 [5(2) - 1]
= 6 (10 - 1)
= 60 - 6
=54
The base of a cube is parallel to the horizon. If the cube is cut by a plane to form a cross section, under what circumstance would it be possible for the cross section be a non-rectangular parallelogram?
Answers
The cross-section of a cube can be a non-rectangular parallelogram when the cutting plane is not perpendicular to the cube's base.
The scenario where a cube's cross-section can be a non-rectangular parallelogram occurs when the cutting plane is at an angle other than a right angle to the cube's base. This results in a parallelogram that is not a rectangle, as the cutting plane affects the shape of the cross-section.
When the cutting plane deviates from being perpendicular to the base of the cube, it creates a cross-section that is not a rectangle but can be a parallelogram with unequal angles and sides.
Understanding the geometric implications of the cutting plane's orientation is crucial in visualizing how the cube's cross-section can vary from a rectangular shape to a non-rectangular parallelogram.
Tia cuts a 4-meter 8-centimeter wire into 10 equal pieces.Marta cut a 540-centimeter wire into 9equal pieces. How much longer is one of Marta's wires than one of Tia's
Answers
tia = 408/10 = 40.8 cm
Tia's wire pieces are 40.8 cm long
Marta's wire, it is 540 centimeter long and is divided into 9 pieces
marta = 540/9 = 60 cm
Marta's wires are longer than Tia's
Marta's wire is 19.2 cm longer than tias
60cm - 40.8cm= 19.2 cm
Which equation could be used to solve the problem?
Mr. Guzman drove his car 1080 miles in 6 weeks.
If he drove the same distance every week, which equation shows how far he drove each week (d)?
A.
d = 6 ÷ 1080
B.
d = 1080 – 6
C.
d = 1080 • 6
D.
d = 1080 ÷ 6
Answers
All you have to do is take the distance she drove and divide it by how many weeks it took.
Mr. Guzman drove 1080 miles in 6 weeks. To find the distance driven each week, use the equation d = 1080 ÷ 6, which equals 180 miles per week. Therefore, the correct equation is option D.
Mr. Guzman drove 1080 miles in 6 weeks. We need to find out how far he drove each week if he drove the same distance every week.
Identify the Total Distance Driven: 1080 milesIdentify the Total Time Period: 6 weeksSet Up the Equation: Since Mr. Guzman drove the same distance every week, we use the formula:
d = Total Distance / Total Time.Substitute Known Values:
d = 1080 ÷ 6Calculate the Result:
d = 180 miles per weekThe correct equation that shows how far Mr. Guzman drove each week is d = 1080 ÷ 6, which corresponds to option D.
The region bounded by the given curve is rotated about the specified axis. Find the volume V of the resulting solid by any method. x2 + (y − 4)2 = 16; about the y-axis
Answers
[tex]\bf \displaystyle \pi \int\limits_{0}^8~8y\cdot dy - \pi \int\limits_{0}^8~y^2\cdot dy\implies \pi \left[ 4y^2~-~\cfrac{y^3}{3} \right]_{0}^8 \\\\\\ \pi \left[ \left[ 256-\cfrac{51}{3} \right]~-~[0] \right]\implies \pi \cdot \cfrac{256}{3}\implies \cfrac{256\pi }{3}\implies 85\frac{\pi }{3}[/tex]
How to do a math probem of two people working together?
Answers
A total of 697 tickets were sold for the school play. They were either adult tickets or student tickets. There were 53 fewer student tickets sold than adult tickets. How many adult tickets were sold?
Answers
Let x-53 = number of student tickets sold
x + x -53 = 697
2x - 53 = 697.
Add 53 to both sides to get:
2x = 750
Divide both sides by 2 to get:
x = 375
375 adult tickets were sold.
The price of an item has been reduced by 55% . The original price was $80 . What is the price of the item now?
Answers
=$36
the price of the item is $36 now
Find a) the GCM (Greatest Common Multiple) and b) the LCM (lowest common multiple:
x²- 3x + 2; x²- 4x + 4
Answers
To do both parts, you need ot factor the polynomials.
x^2 - 3x + 2 = (x - 2)(x - 1)
x^2 - 4x + 4 = (x - 2)(x - 2) = (x - 2)^2
(a) GCF: use only common factors with lower exponent.
The GCF is x - 2
(b) LCM: use common and not common factors with the larger exponent.
The LCM is (x - 2)^2(x - 1)
What is the area of the figure. Show your work.
Answers
The ratio of the sides is
1: 1: sqrt(2)
The legs have length (24 ft)/(sqrt(2)
The legs are the base and height.
A = bh/2 = [(24 ft)/(sqrt(2)) * (24 ft)/(sqrt(2))]/2 = [(576 ft^2)/2]/2
A = 144 ft^2
When developing a plan for a geometric proof, which of the following is not important?
A.) evaluate the given statement(s)
B.)determine the number of steps needed
C.)look carefully at the figure
D.)create a plan for the proof
Answers
Answer: B.)determine the number of steps needed
Step-by-step explanation:
A geometric proof of a geometric statement includes the following steps :-
a) Evaluate the given statement.
b) Look carefully at the figure related to the geometric statement .
c) Create a plan to express the proof.
d)Then use definitions, given axioms, postulates and previously proved theorems to write a logical explanation approaches to the conclusion.
Hence, the step is not important to develop a plan for a geometric proof: is "determine the number of steps needed" .
I need help with 13 please ASAP
Answers
338.50 - 45 = 293.50 was spent on tolls
293.50 / 14 = 20.96
so 21 tolls
On a given blueprint, 1 inch=12 feet. if the dimensiopns of a recreation room on the blueprint are 2 onches x 1.75 inches. what are its actual measurements
Answers
Unit conversion is the conversion of one unit to another unit with its standard conversion.
The actual dimension of the recreation room is 24 feet x 21 feet.
What is unit conversion?It is the conversion of one unit to another unit with its standard conversion.
Example:
1 minute = 60 seconds
1 km = 1000 m
1m = 100 cm
1 hour - 60 minutes
We have,
Recreation room dimension on the blueprint:
= 2 inches x 1.75 inches ______(A)
Scale factor:
1 inch = 12 feet
The actual dimension of the recreational room:
1 inch = 12 feet
Multiply 2 on both sides.
2 inches = 24 feet _____(1)
1 inch = 12 feet
Multiply 1.75 on both sides.
1.75 inches = 1.75 x 12 feet
1.75 inches = 21 feet ______(2)
From (1) and (2) and (A) we get,
= 2 inches x 1.75 inches
= 24 feet x 21 feet
Thus,
The actual dimension of the recreation room is 24 feet x 21 feet.
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What is the simplified form of the following expression square root 1/121
A 2/121
B 1/242
C 11
D 1/11
Answers
Since a square root is like the opposite of multiplying, you can think of the top and the bottom separately for this too!
First, let's start with the top. The square root of 1 is 1, so the numerator is 1.
Now, let's do the bottom. The square root of 121 is 11, so the denominator is 11.
So, the answer is D, 1/11. You can check your answer by squaring it, and getting 1/121.
Hope this helps!
Sandy had 161 dollars to spend on 9 books. After buying them she had 17 dollars. How much did each book cost
Answers
A newspaper carrier can deliver 49 papers in one hour at this rate how many newspaper can the carrier deliver in 3 hours
Answers
Have a nice day.
What is the sum of the solution of 2lx-1l-4=-2
Answers
Please Help Me Anyone !!!
Addison earned a gross income of $42,750 last year. She made $537.56 in IRA contributions, donated $918 to her favorite charity and paid $1,351.35 in home mortgage interest. If Addison claims a standard deduction of $5,700 and her exemption is $3,650, what is her taxable income?
$30,593.09
$36,293.09
$31,511.09
$32,862.44
Answers
so A is the answer
Answer:
The answer is: $ 30,593.09.
Step-by-step explanation:
To the gross income of $ 42,750 of Addison, the amounts of the payments made must be deducted, that is, $ 537.56, $ 918, $ 1,351.35, plus the exemption of $ 3,650, and also if they grant him the standard deduction of $ 5,700; Your taxable income would be: $ 42,750 - ($ 537.56 + $ 918 + $ 1,351.35 + $ 3,650 + $ 5,700) = $ 30,593.09
The answer is: $ 30,593.09.