which of these would be a helpful first step in solving the equation? check all that apply. 7x - 9 = 2x + 21
Answer: E. Subtract 2x
Step-by-step explanation:
Subtracting 2x would remove a bit from both equations, giving us 5x - 9 = 12. This would make it easier now that we only have one number on a side.
Hope this helps!
Given a≠±b and (a^2 - b^2) / (a + b ) = 12, find a - b.
Answer:
a - b = 12
Step-by-step explanation:
- Factorise a² - b²
- Crossed out common factors, (x + a)
--------------------------------------------------))
Hope this helped
Answer:
a-b=12
Step-by-step explanation:
Please consider Brainiest! ; )
Sadly, I don't have many points left so ill have to answer some other questions but anyways, It's Friday! I need help with this please and thank you!
Answer:
1/4 / 9
Step-by-step explanation:
KCF Keep Change Flip
1/4 x 1/9
1/36
Can yall check my answer ?
Answer:
its good :)
Step-by-step explanation:
Write the equation of the line in slope-intercept form using y=mx+b
Answer:
y=-5x
Step-by-step explanation:
m is the slope (rise/run)
b is the y-intercept!!!
Answer:
y=-5x
I'm assuming this is right because I got the same thing as the other guy and you all thanked him/her XD
HELP ME PLS I NEED THIS TODAY Juan filled his gas tank four times last week. Here are the amounts of gas he bought (in gallons).
14.1, 4, 18.35, 3.93
What is the total amount of gas Juan bought last week?
show work
Answer:
Step-by-step explanation:
can someone plz help :( I need help asap
Answer:
x = 120, y = 160
Step-by-step explanation:
I like to use the elimination strategy in this type of problem.
You need to get one of the terms on the right side of the equation equal to and opposite another term on the right side of the other equation. For example, I'm going to make the y term of the first equation equal and opposite the y term of the second equation by multiplying the entire first equation by -1.5.
-1.5 * (x + y) = (280) * -1.5
2.5x + 1.5y = 540
The new equations are (only the first one changed):
-1.5x - 1.5y = -420
2.5x + 1.5y = 540
-----------------------------------
x = 120
Then plug this back into one of the equations.
(120) + y = 280
y = 160
You can check by plugging these into the other equation to make sure they are correct.
Use your answer from Question #5 and the coordinates of P to find the coordinates of P’. Explain your work, including how the scale factor was used to determine the answer.
Answer:
Scale factor is used to find the coordinates depending upon whether the scale factor value is less than one or more than one.
Step-by-step explanation:
A scale factor is a number which scales, or increases, some amount. In the condition y = Cx, C is the scale factor for x. C is likewise the coefficient of x, and might be known as the steady of proportionality of y to x.
An object is augmented if the scale factor is more noteworthy than 1. An article is decreased if the scale factor is a division, under 1. To discover the expanded picture, we initially should know the directions of our unique picture. At that point we basically increase the arrange by the scale factor to discover the widened picture.
WILL MARK BRAINLIEST!!!
for the function y = -2x + 20, what is the output when the input is 50?
Plz, answer CORRECT!
a. it is not, because dividing 1.875 by 500 would not equal 0.015.
b. each piece of paper would equal 0.00375.
the diameter of the table top of a round picnic table is 3.6 feet.What is the approximate area of the tabletop.
explain the answer please step by step please and thank you
F-5 square feet
G-10 square feet
H-20 square feet
J-40 square feet
Answer: G-10 square feet
Step -by-step explanation
Round Dining Table Size Chart, Inches: Table Size, dia Number of persons Room needed 24'' 1-2 8' x 8' 30'' 2-4 9' x 9' 36'' 3-4 10' x 10' 42'' 4-5 11' x 11' 4 more rows .
A new bookcase costs $76 if you buy it already painted the color you want. If you buy it unfinished (not painted at all) then it’s only $58.
What percentage is the discount if you buy the bookcase unfinished? Round your answer to the nearest whole percent.
23.68421053%
.................
I'll mark the best or first answer as brainless.
The local business will donate $5.00 for every 10 tickets sold. Let x represent tickets sold, and y represent dollars donated. Student A claims that the equation is y = 2x. Student B claims that the equation is y = 1
2
x. Explain who is correct.
Answer:
If we let x be the number of ticket sold and y be the amount in dollars donated then, the equation would be,
x = 2y
We can check our answer by substituting the given,
10 = 2(5)
10 = 10
The equation can also be written as,
y = (1/2)x
Student B is correct.
Answer:
Sample Response/Explanation: The point that represents what the local business will donate is (10, 5). After testing the point in both equations, you can see that student B wrote the correct equation; 5 = 12(10).
Step-by-step explanation:
≧◉◡◉≦ help please. i am stuck on this question!!
Answer:
the answer is the first answer, (-1, -2), (2, -2)
Step-by-step explanation:
5y-14=2y-2 solve for y and show work plz
Answer:
y=4
Step-by-step explanation:
Let's solve your equation step-by-step.
5y−14=2y−2
Step 1: Subtract 2y from both sides.
5y−14−2y=2y−2−2y
3y−14=−2
Step 2: Add 14 to both sides.
3y−14+14=−2+14
3y=12
Step 3: Divide both sides by 3.
3y/3=12/3
y=4
Answer:
5y + -14 = 2y + -2
-14 + 5y = 2y + -2
-14 + 5y = -2 + 2y
-14 + 5y = -2 + 2y
-14 + 5y + -2y = -2 + 2y + -2y
5y + -2y = 3y
-14 + 3y = -2 + 2y + -2y
2y + -2y = 0
-14 + 3y = -2 + 0
-14 + 3y = -2
-14 + 14 + 3y = -2 + 14
-14 + 14 = 0
0 + 3y = -2 + 14
3y = -2 + 14
-2 + 14 = 12
3y = 12
y = 4
please help i will give brainliest
Answer: B I had a scene answer like that the correct answer is B
What is the answer to this problem, and explain it please!
Amazon Prime has movies on sale. If yoi just paid $5 for a movie that originally cost $12, what was the percent discount?
Answer:
Discount Percent = 58.33 %
Discount Amount = $ 7.00
Step-by-step explanation:
Answer:
41.66666667%
Step-by-step explanation:
DO you mind yo help me please I really need it!
Answer:
80
Step-by-step explanation:
Volume= Length x Width x Height
8x2x5= 80
If you want to break it up into smaller pieces ....
5x2=10 or 5+5=10
10x8= 80 or 10+10+10+10+10+10+10+10
hope this helps! :)
A girl read a book that had 1,159 pages. She read 72 pages on the first day. She then read 40 pages per day until she finished the book. Which equation could be used to find the number of days, d, it took her to read the book?
Answer:
1,159=40d+72
Answer:
(1159-72)÷40= 27 it would take her 27 days
Step-by-step explanation:
if she initially read 72 you would subtract that from the original number of pages she had to read, then divide the number that's left with how many pages she read a day after that which is 40. to get a total of 27 days to read
Please help! giving brainlist
Answer:
colder then warmer
Step-by-step explanation:
PLEASE HELP...I NEED THE WHOLE PAGE PLEASE
Dose anybody know these and can Answer PLZ: Sorry if its a lot , you dont have to answer all but it would be helpful
Hank is throwing a surprise party. The party costs $20 per person. Create an equation and graph to represent the relationship between the cost of the party and the number of friends attending.
The independent variable is ____.
A. Number of friends (f)
B. Cost of party (c)
The equation __________ can be used to represent this relationship.
c = 20f
f = 20c
c = 10f
f = 10c
Hank is throwing a surprise party. The party costs $20 per person. Create an equation and graph to represent the relationship between the cost of the party and the number of friends attending.
If 50 people attend, what is Hank's cost? $_____
Complete the following table:
Number of friends (f) *? 10 *? 20
Cost of party (c) 100 *? 300 *?
Plots the points from the table onto the graph
Answer:
b.cost of party
c=20f
Step-by-step explanation:
so we know the equation we have to use is c=20f
for part 2 we have to find out how much it's going to cost hank if 50 people attend his party;
so we know that 'c' is our unknown variable; now we write the equation filling in the 'blanks' with what we know-
c=20*50
now we multiply **remember that when you have a number and a letter right next to each other that they're being multiplied**
20*50
=1000
so hank will be spending $1000
good luck :)
hopefully, this helps
sorry i couldn't answer the last question
have a nice day !!
can someone answer me this question?
Answer:
oki...whats the question?
Step-by-step explanation:
UwU
Answer:
depends on the question... there is nothing attached.
Step-by-step explanation:
PLEASE HELP WITH PART A AND B- PLEASE HAVE WORKKK I WILL MARK BRAINLIEST PLEASE HELP!
You are comparing the costs of a certain model of ladder at a hardware store and online. The sale information can be found below.
PART A: Calculate the final cost of the ladder at each of the stores. Include the proportion(s) or equations(s) you needed to reach your answer.
PART B: Suppose the hardware store decides to offer 10% off the cost of the ladder (but still keep the 6% tax) and the online store decides to offer free shipping and handling (but still keep the 6% tax). In this situation, which store offers the better final cost? Include the proportion(s) or equations(s) you needed to reach your answer.
Answer:
Part A:
Hardware Store = $371Online Store = $355.20Part B: The hardware store is cheaper.
Step-by-step explanation:
Part A:
At the hardware store, the ladder is 350 plus 6% tax. To solve this you would multiply 350 by 1.06 tax. Then you would get 371. Online, the ladder is 320 plus 6% tax and 5% shipping. To solve this you would multiply 320 by 1.11 (tax and shipping combined). Then you would get 355.20.
Part B:
To solve the cost of the ladder at the hardware store, you would need to first multiply 350 by 0.9 for the 10% discount. That would get you 315. Then add the 6% tax to get 333.90. To solve for the online ladder, you would need to multiply 320 by 1.06 (6%), and get an answer of 339.20. This means that the hardware store is cheaper.
Answer
Step-by-step explanation: How to find the percentage from the total value?
Suppose the value of which a thing is expressed in percentage is "a'
Suppose the percent that considered thing is of "a" is b%
Then since percent shows per 100 (since cent means 100), thus we will first divide the whole part in 100 parts and then we multiply it with b so that we collect b items per 100 items(that is exactly what b per cent means).
We need to Write the percent as a fraction in simplest form
16.24%
So, we can rewrite it as;
16.24 / 100
16 and 24/100 or 16 6/25
So the percent as a fraction is 16 6/25
We are given that;
Cost of ladder= $320
Sales tax of shipping and handling is 5% and 6%
Off on hardware= 10%
Now,
PART A:
At the online store, the ladder costs $320, and the sales tax is 6% of $320, which is:
$320 x 0.06 = $19.20
The shipping and handling is 5% of $320, which is:
$320 x 0.05 = $16
So the total cost of buying the ladder online is:
$320 + $19.20 + $16 = $355.20
At the physical store, the ladder costs $350, and the sales tax is 6% of $350, which is:
$350 x 0.06 = $21
So the total cost of buying the ladder at the physical store is:
$350 + $21 = $371
Therefore, buying the ladder online would be cheaper, with a total cost of $355.20.
PART B:
If the hardware store is offering 10% off the price of the ladder, the cost of the ladder would be:
$350 x 0.1 = $35 off
$350 - $35 = $315
So the total cost of buying the ladder at the physical store with the discount would be:
$315 + $18.90 (6% sales tax) = $333.90
If the online store is offering free shipping and handling, the total cost of buying the ladder online would be the same as the cost of the ladder:
$320 + $19.20 (6% sales tax) = $339.20
some help would be appreciated thankssssss
Answer:
the answer is 20
Step-by-step explanation:
please mark brainliest
help this is due tommorow!!
I just need to find quadrant 1 and 3 for that set of numbers!
Answer:
Mathematics at Louisiana State University for their support in the ... Lesson 1: Positive and Negative Numbers on the Number Line—Opposite ... from Grade 5 of plotting points in the first quadrant and transition to locating ... Find and position integers and other rational numbers on a horizontal or ... tomorrow's water level.
Step-by-step explanation:
HEY YOU GUYSSS. I need help asap, I'm doing an extra credit assignment for math and I need to know the formula for any of these questions. THANKS
Answer:
1) S
2) M
3) I
4) E
5) A
6) L
thats what i got but i dont know y it isnt a proper word.
Answer:
1) S
2) M
3) I
4) E
5) A
6) L
Step-by-step explanation:
plz help me what do i put in the yellow box
Answer:
$1.77
Step-by-step explanation:
10-(5.25+2.98)
=10-8.23
=1.77
Hope this helps :)
Answer:
$1.77
Step-by-step explanation: