Answers
Answer:
incorrectcorrectincorrectStep-by-step explanation:
A + B = (-4x^2 +2x -5) +(3x^2 +6) = x^2(-4+3) +x(2) +(-5+6) = -x^2 +2x +1
The given sum is Incorrect.
__
A - C = (-4x^2 +2x -5) -(-5x -4) = -4x^2 +x(2+5) +(-5+4) = -4x^2 +7x -1
The given difference is Correct.
__
B + C = (3x^2 +6) +(-5x -4) = 3x^2 -6x +2
The given sum is Incorrect.
Related Questions
Please help!!
As part of a landscaping project, put in a flower bed measuring 10 feet by 20 feet. Surround the bed with a uniform border of low-growing plants.
a. Write a polynomial that describes the area of the uniform border that surrounds the flower bed.
b. The low growing plants surrounding the flower bed require 1 square foot each when mature. If there are 216 of these plants, how wide a strip around the flower bed should be prepared for the border?
Answers
Answer:
hope this helps you out.
True or False? If a positive integer is subtracted from a negative integer, the answer is a negative integer.
Answers
Answer:
True
Step-by-step explanation:
Answer:
true
Step-by-step explanation:
because if you have diffrent sings you will subtract same sings add.
The ideal width of a safety belt strap for a certain automobile is 6 cm. The actual width can vary by at most 0.45 cm. Write an absolute value inequality for the range of acceptable widths and solve the inequality.
Answers
Answer:
[tex]|x-6|\le 0.45[/tex]
[tex]x\in [5.55,6.45][/tex]
Step-by-step explanation:
Absolute Value Inequality
Assume the actual width of a safety belt strap for a certain automobile is x. We know the ideal width of the strap is 6 cm. This means the variation from the ideal width is x-6.
Note if x is less than 6, then the variation is negative. We usually don't care about the sign of the variation, just the number. That is why we need to use the absolute value function.
The variation (unsigned) from the ideal width is:
[tex]|x-6|[/tex]
The question requires that the variation is at most 0.45 cm. That poses the inequality:
[tex]|x-6|\le 0.45[/tex]
That is the range of acceptable widths. Let's now solve the inequality.
To solve an inequality for an absolute value less than a positive number N, we write:
[tex]-0.45\le x-6 \le 0.45[/tex]
This is a double inequality than can be easily solved by adding 6 to all the sides.
[tex]-0.45+6\le x \le 0.45+6[/tex]
Operating:
[tex]5.55\le x \le 6.45[/tex]
That is the solution in inequality form. Expressing in interval form:
[tex]\boxed{x\in [5.55,6.45]}[/tex]
please answer quick! im being timed!!!!!!!
Polygon B is a scaled copy of Polygon A.
What is the scale factor from Polygon A to Polygon B? Explain your reasoning.
Find the missing length of each side marked with ? in Polygon B.
Determine the measure of each angle marked with ? in Polygon A.
Answers
Answer:
A. 25°
- 15°
B. 5.3
-8. 2
Step-by-step explanation:
i'm sorry ya kalo jawaban nya salah
An elephant seal was swimming 330 meters below the ocean's surface. It dove another 85 meters down to look for a squid to eat.
What is the position of the seal now relative to the ocean's surface?
Answers
Answer:
-415
Step-by-step explanation:
because first of all the sentence said it DOVE UNDER meaning it was under sea level so its basically negative then add the two numbers and turn it to negative.
I need help with this question please.
Answers
Answer:
It's B. 2/5
Step-by-step explanation:
Because: line G to E is 2/5 of G to F.
What is 4^7 x 4^-5 expanded
Answers
Answer:
16
Step-by-step explanation:
4^7= 16348
4^-5= 0.0009765625
16348x0.0009765625= 16
Given: ∠2 ≅ ∠3 and ∠5 ≅ ∠6
Prove: PQ || RS
Answers
Answer:
sorry I need more points to ask questions and I really need the answers I know you understand, thankyou :)
ep-by-step explanation:
Aisha took the train spoklane to seattle. the distance is 250 miles and the trip took 3.5 hours. wha was the speed of the train
Answers
Answer:
I believe the answer is 72.88 Miles Per Hour (MPH).
Step-by-step explanation:
If the distance being traveled is 250 miles and the time it took was 3.5 hours, then you should divide the 250 miles by the 3.5 hours it took to get there. By dividing 250 by 3.5, you can get 72.88, which should be the answer.
Hope this helps! Let me know.
The temperature in the late afternoon was −7.5°C. It dropped 5 degrees by early evening and then dropped another 8.5 degrees by midnight. What was the temperature at midnight?
Answers
Answer:
-21 is the correct answer
Step-by-step explanation:
-7.5 - 5 - 8.5 = -21
Answer:
-21 is the correct answer
-7.5 - 5 - 8.5 = -21
The numeraiders won 7 games, lost 9 games and tied 2 games. What percent of the games did they win?
Answers
Answer:
0.39%
Step-by-step explanation:
7+9+2= 18
7 divided by 18 and you'll get 0.38%. If you round it up it's 0.39%.
Answer:
39% of the games they won
Step-by-step explanation:
7+9+2=18
so there were 18 games in total and they won 7 of those games so they won 7/18 of the games.
You divide 7/18 and get 0.388888... you would round to the nearest hundredth place and get 0.39
To change a decimal to a percent you multiply by 100 and get 38%
Molly bought a flat. At the beginning of
the third year, the value of Molly's flat had
increased to €363 000. At the beginning of
the fifth year, the value had increased to
€439 230.
a Calculate the rate of increase.
b Calculate how many euros Molly
originally paid for the flat.
C Find how much the flat is worth at the
beginning of the ninth year.
Answers
The rate of increase is 1.1, Molly originally paid 272727 for the flat and its worth at the beginning of the ninth year. is 643076
Calculating the rate of increase.From the question, we have the following parameters that can be used in our computation:
Third year = 363000
Fifth year = 439230
So, we have
Rate² = 439230/363000
Evaluate
Rate² = 1.21
Take the square root
Rate = 1.1
Calculating how many euros Molly originally paid for the flat.An exponential function is represented as
f(x) = abˣ
Where
a = initial values
Using the values from the third year, we have
a * 1.1³ = 363000
So, we have
a = 363000/1.1³
Evaluate
a = 272727
The flat worth at the beginning of the ninth year.This means that
x = 9
So, we have
f(x) = 272727 * 1.1⁹
Evaluate
f(x) = 643076
Hence, the flat worth at the beginning of the ninth year. is 643076
Read more about exponential functions at
https://brainly.com/question/2456547
#SPJ1
en una guardería ay una matricula de 50 lactantes de los cuales 20 son niñas cual es la razon de niñas a niños en dicha guarderia
Answers
Answer:
La razón de niñas a niños en la guardería es de 2 niñas por cada 3 niños.
Step-by-step explanation:
Una razón es una división entre dos números, generalmente en forma racional (fraccionaria). La razón de niñas a niños en la guardería es la cantidad de niñas dividida por la cantidad de niños de la dicha guardería, Es decir:
[tex]x = \frac{20}{30}[/tex]
[tex]x = \frac{2}{3}[/tex]
La razón de niñas a niños en la guardería es de 2 niñas por cada 3 niños.
Guys help please!!!!!
Answers
Answer:
what?
Step-by-step explanation:
Select the correct answer
Consider the given table in the picture.
I need it ASAP
Answers
Triangle. A)6× b) 8× c) 6×
Answers
Answer:
288
Step-by-step explanation:
jnjrgrugnrjgvnjrhbyrngk
Help!!!
The relationship between the number of pounds (lb) of cereal and the price in dollars is shown in the graph what is the unit price of cereal?
Answers:
A. $7/1 lb
B. 1 lb/ $7
C.$14/ 2 lb
D. $1/7 lb
Answers
A. $7/1 lb
The first intersection is at (7,1)
1+1x2/3+8x45/6+8-97x29/3x79tothethirdpower/13+10
Sorry, but just curious whoever gets this right will get brainliest and give explanation (Example) 1+1=2 and 2x2 is 4 and 4/3+8 and so on, Good luck!
Answers
Answer:
2.26973255E-12
Step-by-step explanation:
1+1=2*2=4
3+8=11*45=495
6+8=14-97=-83*29=-2407 3*79 79^3=493,039*3=1479117
1+1=2*2=4/495=.0080808081/-2407= -.000033572/1479117
2.26973255E-12
What is the result when the number 93 is increased by 8%?
Answers
jacob stated that he solved the equation 2x+3 =5 using the addition and multiplication property of equality which statement is true
-------------------------------------------------------------------
jacob added -3 to both sides and multiplied both sides by 1/2
jacob added -3 to both sides and multiplied both sides by 2
jacob added 3 to both sides and multiplied both sides by 1/2
jacob added 3 to both sides and multiplied both sides by 2
Answers
Answer: the answer is A
Step-by-step explanation: Jacob added -3 to both sides and multiplied both sides by 1/2, I take a test and my answer was correct...
It cost Oliver $3.36 to send 112 text messages. How much does each text cost to send?
Answers
Explanation: divide $3.36 / 112 to find how much each text costs, and you get $0.03
Use point-slope or slope-intercept form to match the equations in slope-intercept form with the given slope m and point (x, y)
m = 3 point (-2, 1)
y = 3x + 7
m = 3 point (1, -3)
y = 3x - 7
m = 3; point (4,5)
y = 3x - 6
Answers
Answer:
M= 3 point (-2,1) goes with y=3x+7
M=3 point (1,-3) goes with Y+3x -6
M= 3 point (4,5) goes with y=3x -7
I did the instruction
Answer:
hope I helped
Step-by-step explanation:
Which of the following points lies on the line whose equation is y=2x-3?
(-1,4) (1, -1)
(0,3)
Answers
Answer:
(1, -1)
Step-by-step explanation:
y - (-1) = 2 (x - 1)
y + 1 = 2x - 2
y = 2x - 2 - 1
y = 2x - 3
Answer:
Option B: (1,-1)
Step-by-step explanation:
To solve these types of questions, you must first draw the graph. Then, you can see which point is on the line.
(I personally use Desmos's Graphing Calculator for the graph. Just put the equation in, and the line is drawn for you!)
I hope this helps!
Please Help! Chapter TEST review tonight!!!
Will give BRAINLIEST!!!!
Answers
Answer:
[tex]x=5^o[/tex]
[tex]m\angle EBD=50^o[/tex]
Step-by-step explanation:
First case: angleEBD = 86 degrees, and angleDBC = 7 x + 8
Since BD bisects angleEBC, then angleDBC = 86/2 degrees = 43 degrees
then 43 = 7 x + 8
solving for "x":
43 - 8 = 7 x
35 = 7 x
dividing both sides by 7:
x = 5 degrees
Second case: angleEBD = 5 x + 20 and angleDBC = 7 x + 8
Since both angles must be of the same measure because BC is the bisector, then we can write the equation:
5 x + 20 = 7 x + 8
solve for x:
20 = 7 x - 5 x + 8
20 - 8 = 2 x
12 = 2 x
x = 6 degrees
now use x = 6 degrees to find angle EBD:
angleEBD = 5 (6) + 20 = 30 + 20 = 50 degrees.
If angle 2 is 120 degrees, a) What is the measure of angle 1?
Answers
Step-by-step explanation:
<1+<2=180°
<1+120°=180°
<1=180°-120°
<1=60°
Answer plz plz plz plz plz plz plz
Answers
Answer:
It would be the third answer choice
Step-by-step explanation:
Answer:
graph c, a translation on just sliding the shape around
each day, lisa spends 40 minutes for sport; rock spends 1 hour for sports; scott spends 1 hour and 15 minutes for sport. what is the simplest ratio of the sporting time for lisa to rock to scott.
Answers
Answer:
8:12:15
Step-by-step explanation:
L=lisa R=rock S=scott
L 40mins
R 60 mins
S 75 mins
40:60:75
8:12:15
Round 56.834 to the nearest tenth
Answers
Answer:
56.8
Step-by-step explanation:
8 is the tenth
numbers that are 4 or under stay the same
numbers that are 5 or above round up
Answer:
56.8
Step-by-step explanation:
When rounding to the nearest tenth you look at the number behind the decimal. And the number in the hundredths place if it is 4 or lower you keep it the same. If it is 5-9 you up it by one.
!50 POINTS! what is One foot as a fraction
Answers
Answer:
12/1
Step-by-step explanation:
Help Please 5/8 x 4/7
Answers
Answer:
5/14
Step-by-step explanation: