Decide whether each of the following pairs of expressions are equivalent for all values of x. If they are equivalent, show how you can be sure. If they are not, justify your reasoning completely.
a. (x - 5)(2x + 7) and 2x^2 - 3x - 35
b. 3(x - 2)^2 + 6 and 3x² + 18
What’s the answer for 24=3(n-5
Answer:
n=13
Step-by-step explanation:
isolate the variable by dividing each sides by factors that don't contain variables.
An iceberg is 27 feet above water however it is 46 feet deep underwater. How tall is the iceberg
Answer:
73 feet
Step-by-step explanation:
27 + 46 = 73 feet
Select all of the values of n that satisfy the equation n2 = 64.
A.
n = –8
B.
n = –32
C.
n=(64−−√)
D.
n=(64−−√)2
E.
n = 8
F.
n = 32
10. A jar contains dimes and quarters. There are 15 more quarters than dimes. The coins total $23. How many
of each coin is in the jar?
What is this question asking you?
Dimes
Quarters
Number of Dimes:
Number of Quarters:
Answer:
dimes:$8 quarters:$15
Step-by-step explanation:
im still in 6th grade
Answer:
55 dimes and 70 quarters
Step-by-step explanation:
Using a simple strategy of guess and check we know that the quarters will always be 15 more than dimes. From this we know it has to be around the 50s as 40s would bring us numbers too low and 60s too high. 55 happens to be answer for dimes as that brings in $5.50. 23-5.5=17.5 multiply that by 4 as each quarter is only valued at $0.25 you get the answer 70 which just so happens to meet the requirements of being 15 more than 55.
Write an equation in slope intercept form for: m = - 1 and b = 2
Answer:
y=-1x+2
or
y=-x+2
y=mx+b
substitute
you get y=-1x+2
Yesterday, a parking lot had 60 cars parked in it. Of the cars parked in the parking lot, 40% were silver, 14 were red, and the rest were blue. How many of the cars were blue?
A. 24 cars
B. 38 cars
C. 22 cars
D. 6 cars
Answer:
C. 22 Cars are Blue
Answer:
22
Step-by-step explanation:
no:of silver cars=60*40/100 ie 24
no:of red cars ie 14
total cars=silver+red+blue
60=24+14+blue
60=38+blue
blue cars=60-38
ie 22
math work please help wioth my math
Answer:
Figure A is scalene and probably obtuse.
Figure B is scalene and right.
Figure C is equilateral and acute.
Figure D is isosceles and right.
Figure E is isosceles and acute.
I am so sorry if I did a few wrong, I'm in Middle-School so I don't know much. I hope I get everything correct!
Answer: Figure A is scalene and probably obtuse.
Figure B is scalene and right.
Figure C is equilateral and acute.
Figure D is isosceles and right.
Figure E is isosceles and acute.
Step-by-step explanation:
3 people can deliver 1000 letters in 30 minutes.
How long would it take 1 person to deliver all 1000 letters?
If there are 5 people delivering would it take more or less time?
How long will take 5 people to deliver 1000 letters?
Answer: It would take 1 hour and 30 minutes for one people do it.
If 5 people do it would take less time. If there are 5 people delivering the letters it would take them 12 minutes ti deliver all 1,000 letters.
Clara and Ben each have a rock collection. • The number of rocks in Clara's collection can be represented by, • The number of rocks in Ben's collection is 4 times the number of rocks in Clara's collection. • The total number of rocks in both collections is 225. What is x, the number of rocks in Clara's collection?
Answer:
ASD
Step-by-step explanation:
Help. Please open powerpoint and help me!
Answer:
30.4%
1000 at £1.10
1000 x 1.10 = £1100
35% of 1000 is given away
1000 - 35% = 1000 - 350 = 650 left
35% of £1100 = £385, subtract to get £715 pounds worth of pins left
650 are left, with 385 pounds lost
60% of 650 = 390 pins sold at £3 each
40% of 650 = 260 sold at £5 for 2
3 x 390 = £1170 made from the first lot
260/2 = 130 x 5 = £650 made from the second lot
£1170 + £650 = £1820 from sales
Sales - cost to make - losses (giveaways) = profit value
1820 - 1100 - 385 = 335 pounds of profit
To find the gross profit margin, we take the profit, and find what percentage of the production cost it is.
335 is about 30.45% of 1100
30.45%, which is 30.4% to 1 decimal place.
The user is not responsible for any errors and all care should be taken to validate answer by self before submission.
Which equation is equivalent to StartRoot x squared + 81 EndRoot = x + 10? x + 9 = x + 10 x + 9 = x2 + 20x + 100 x2 + 81 = x2 + 100 x2 + 81 = x2 + 20x + 100
Answer:
D on edge
Step-by-step explanation:
I got several quiz checks
Answer:
D) x2 + 81 = x2 + 20x + 100
Step-by-step explanation:
HELP AND WILL GIVE BRAINLIEST!!! Solve for x
Answer:
22
Step-by-step explanation:
yevdywjebecgeh3bebebv3hruejjd÷×+jfur
Esteban finds 12 baseball cards on Monday and 24 more baseball cards on Tuesday. He gives some baseball cards to his sister, and now he has 13 baseball cards left. How many cards did he give to his sister?
Answer:
23 cards.
Step-by-step explanation:
After Monday, Esteban has 12 cards.
After Tuesday, Esteban has 12 + 24 = 36 cards.
He gave to his sister x cards.
36 - x = 13
36 = 13 + x
23 = x
Tony needs one gallon of orange juice to make punch for a party. Gallons of orange juice cost $3.99 each. Quarts of orange juice
cost $1.25 each. Pints of orange juice cost $0.65 each. Cups of orange juice cost $0.20 each. Which of these is the best buy for a
gallon?
A-the cups
B-the pints
C-the quarts
D-the gallon
Answer
C because 2 quarts make's one gallon
Step-by-step explanation:
Someone help with this please
HELP ME PLEASE!!!ITS DUE TODAY!!IF YOU DO NOT KNOW DONT ANSWER PLEASE!!!;(
Step-by-step explanation:
When dealing with graphs, involving points in between numbers, we have to carefully look at the x and y axis.
On the graph, the y-axis is going by 2s: 0, 2, 4, 6, 8, 10
On the x-axis, it's going by 1s: 0, 1, 2, 3, 4, 5, 6
Between 2 and 4 is 3
Between 4 and 6 is 5
Between 6 and 8 is 7
Between 8 and 10 is 9
Between 2 and 3 is 2.5
Between 3 and 4 is 3.5
Between 4 and 5 is 4.5
Between 5 and 6 is 5.5
Between 6 and 7 is 6.5
Between 7 and 8 is 8.5
Between 8 and 9 is 8.5
Between 9 and 10 is 9.5
Between 10 and 11 is 10.5
You get to see the pattern going on here...
On point E, we can see that the x-axis is 2.
Now on the y-axis, it is between 6 and 7. But if you look closely, you'll see that it's not on the line, that indicates 6.5.
So we find the median...
6, 6.1, 6.2, 6.3, 6.4, 6.5 6.2 and 6.3 are on the medium
[tex]\frac{6.2 + 6.3}{2}[/tex] = 6.25 Answer on E: (2, 6.25)
On point F, we can see that the x-axis is 3.
On the y-axis, it is between 8 and 10, which would be 9, BUT, look closely that it's also between 9 and 9.5.
The answer would be 9.5, but it is SLIGHTLY below 9.5, so I think it's 9.4
Answer on F: (3, 9.4)
On point G, the x-axis is between 3 and 4, so it's 3.5.
On the y-axis, we know it's going by 2s. We can see that G is between 10 and 12, so it would be 11. Because it is on that thin line, as you can see.
Answer on G: (3.5, 11)
what is x if 10/10+x = 35/56
x=?
Answer:
x = [tex]-\frac{3}{8}[/tex]
Step-by-step explanation:
Answer:
your answer is -3/8 or in decimal form its -0.375
Step-by-step explanation:
A circle has a radius of 4in. What is the area of the circle?
Answer:
the area is 50.27
Step-by-step explanation:
Use the formula and you can get the answer A=πr2
Answer: 50.27
Step-by-step explanation:
Applications Day #1:
es. Commi
ana
1.
A salesman earns a commission of 18% of all sales he makes at the car dealership. If he sells $250,000
worth of cars in a week, what will his commission be for the week?
Which equation is being graphed here?
A. y-4= -2/3(x-2)
B. y-4= -2/3(x+2)
C. y+4= -3/2(x-2)
D. y+4= -3/2(x+2
______________________________
1.) Graph each equation:
(I've included the graphs below.)
So your answer is c, [tex]\bold{y+4=-\frac{3}{2}(x-2)}[/tex].
______________________________
Drag the tiles to the correct boxes to complete the pairs.
Match each radius or diameter of a circle with its approximate circumference.
Tiles
Answer:
36
3
5
12
Step-by-step explanation:
The circumfrence of a circle is as follows
2πr
For this question π=3.14
So we have
113.04=2πr
solve for r
r= 18
which means that diameter is 36
Just do the same thing with the other questions
18.84=2πr
r=3
31.4=2πr
r=5
37.68=2πr
r=6 which means that the diamater is 12
A colony of bacteria starts out with 175 cells and they double every hour write an equation that models the number of cells y after x hours
Answer:
200
Step-by-step explanation:
identify the diameter of Q given that a= 169 pie in2
Answer:
the diameter will be D=26 in.
Step-by-step explanation:
The area of a circle is given by:
[tex]A=\pi R^{2}[/tex] (1)
Where:
A is the areaR is the radius of the circleNow, we know that A = 169 π in²
So, we just need to use equation 1 to find R.
[tex]169\pi = \pi R^{2}[/tex]
[tex]R=\sqrt{169}[/tex]
[tex]R=13 \: in[/tex]
Therefore, the diameter will be D=2*R=26 in.
I hope it helps you!
The diameter of the circle is 26 inches
The area of the circle is given as:
[tex]A = 169\pi[/tex]
The area of a circle is calculated as:
[tex]A = \pi r^2[/tex]
By comparison, we have:
[tex]\pi r^2 = 169\pi[/tex]
Divide both sides of the equation by pi
[tex]r^2 = 169[/tex]
Take the positive square roots of both sides
[tex]r = 13[/tex]
Multiply by 2, to calculate the diameter
[tex]d =2 * 13[/tex]
[tex]d = 26[/tex]
Hence, the diameter of the circle is 26 inches
Read more about diameter at:
https://brainly.com/question/15673093
find the volume of a rectangular block of ice 2 feet by 3 and 1/2 feet by 1 and 1/2 feet the volume of the rectangular block of ice is what simplify your answer please
Answer:
V = 10 1/2 ft³
Step-by-step explanation:
V = length • width • height
V = 2 • 3 1/2 • 1 1/2
V = 10 1/2 ft³
You roll a number cube. Determine the theoretical probability of rolling a 4 or a 6.
Answer:
Both of them would have a 1/6 chance of being chosen
Step-by-step explanation:
Sorry I don't know if this is the answer you are looking for :(
Answer:
2/6 is read as "2 out of 6" or "2 in 6"
Step-by-step explanation:
Since there are 6 sides on a dice you have a 2 in 6 chance of rolling either a 4 or a 6. The probability of rolling one over the other would be 1/6
Hope this helps!
anton needs to buy 3.5 meters of cloth for their project in TLE. If 1 meter of cloth costs P35.00 how much will he spend for 3.5 meters of cloth?
Answer:
122.5
Step-by-step explanation:
50/20 equals 20 over X
Answer:
50/x
Step-by-step explanation:
Answer:
8
Step-by-step explanation:
cross multiply:
50*x = 20*20
50x=400
divide by x (50)
50x/50 = 400/50
x=8
the problem.
2/3+1/3+5/3=
Lauren ran the 400-meter dash in fifty-three and ten hundredths seconds. How
should this decimal be written correctly?
A: . 5310
B: 53.10
C: 53.01
Answer:
B
Step-by-step explanation:
Im not quite sure but i think it is b i hopeitcan help you!