Answer:
18
X = ---- , y = 12
c
Step-by-step explanation:
Solve for x, y
X = 18
__
c
Y = 12, c ≠ 0
Consider the first equation. Subtract 2y from both sides.
cx - 2y = -6
To solve a pair of equations using substitution, first solve one of the equations for one of the variables. Then substitute the result for that variable in the other equation.
cx = 18, cx - 2y = -6
Pick one of the two equations which is more simple to solve for x by isolating x on the left hand side of the equal sign.
cx = 18
Divide both sides by c.
18
X = __
c
Substitute 18/c for x in the other equation,
c x - 2y = - 6.
18
c x ( ---- ) - 2y = - 6
c
18
Multiply c times ----
c
18 - 2y = - 24
Subtract 18 from both sides of the equation.
- 2y = - 24
Divide both sides by -2.
y = 12
The system is now solved.
18
X = ---- , y = 12
C
Consider the line 4x+2y=-7.
What is the slope of a line perpendicular to this line?
What is the slope of a line parallel to this line?
Answer:
To find slop from the given equation,
Slope (m) =
[tex] \frac{ - \: cofficients \: of \: x }{cofficient \: of \: y} [/tex]
So, slope of this equation is - 2
For perpendicular case,
M1 . M2 = - 1
Thus, m2 = 2 ( for this equation)
Similarly,
For parallel case,
M1 = m2
Thus, m2 = - 2 ( for this equation)
Keep asking sir/maamCesar is creating a schedule to practice his instrument for band. He needs to practice for a total of 10 hours in a week. On Monday he practice for 1 12 1 2 12 1 2 hours, on Tuesday he practiced for 2 14 1 4 14 1 4 hours, and on Wednesday he practiced for 1 12 1 2 12 1 2 hours. How many hours does Cesar need to practice during the rest of the week in order to have his 10 total hours?
Answer: See explanation
Step-by-step explanation:
Your question isn't really clear. Let me help you rephrase it and solve.
Let's say Cesar is creating a schedule to practice his instrument for band. He needs to practice for a total of 10 hours in a week. On Monday he practice for 1 1/2 hours, on Tuesday he practiced for 2 1/4 hours, and on Wednesday he practiced for 1 1/2 hours.
The total hours that Cesar has used in practicing will be:
= 1 1/2 + 2 1/4 + 1 1/2
= 5 1/4
To get the number of hours that Cesar need to practice during the rest of the week in order to have his 10 total hours, we subtract 5 1/4 hours from 10 hours. This will be:
= 10 - 5 1/4
= 4 3/4 hours.
Cesar needs to practice for 4 3/4 hours more.
A package that is heavier than 11 lb. and 8 oz. will have a label that says "heavy" on it. Gloria packed 6 flower pots to send to her customers. Each of the flower pots weighs 1 lb. and 12 oz. The packing material weighs 5 oz. Will her package be labeled as "heavy"?
Answer:
No, the package will not be labeled "heavy"
Step-by-step explanation:
1) if you multiply 1lb. and 12 oz. by the number of flower pots(I'll be using the variable P), then the expression will be (1lb.P) (12oz.P).
2) then after you get the answer for that, which is 6lb. 72oz. and after that you'll have to add the weight of the packaging, which is 5oz. which the answer is 6lb. 77oz.
3) after, you will then have to get the number of pounds from the ounces if there are more than 16, which there are, so after you get the answer out of that, which is 4 and then you would have 13oz. leftover.
4) you would then have to add your 4lb. to your 6 that you already have, which would be 10lb.
Final) so in the end, you would have 10lb. 13oz.
Daniel is looking at two different credit card offers. Credit Card A will give him an APR of 22.45%. Credit Card B will offer will be 1.25% each month. Which the better deal?
Answer:
Credit card B is a better deal
Step-by-step explanation:
in order to compare both credit cards, we must either convert the APR into a monthly rate or the monthly rate to APR.
convert credit card A's APR to monthly rate:
= 22.45% / 12 ≈ 1.87%, which is higher than 1.25%, so credit card B is better
OR
convert credit card B's monthly rate to APR:
= 1.25% x 12 = 15%, which is lower than 22.45%, so credit card B is better
The number of students enrolled at a college is 13,000 and grows 4% each year, what is the initial amount
Answer:
13,000
_____
4%
I'm sorry if this is incorrect
I need help with angles!!!!!!!!1
Answer:
3
Step-by-step explanation:
HELP ME PLEASE!!!!
Star Market is selling containers. They are charging $28 for a set of 16 pieces. What is the price per piece?
Answer:
$1.75
Step-by-step explanation:
Divide 28$ by 16 pieces for 1.75 a piece
if I have 24 coins and 7 pouches how many coins can go in each pouch
Answer:
If you have have 24 coins and 7 pouches, you can put 3.43 coins in each pouch.
Step-by-step explanation:
To solve this you want to divide the 24 coins into 7 pouches.
x = coins
y = pouches
z = how many coins can go in each pouch:
[tex]x/y = z[/tex]
Substitute:
24/7 = z
3.42857142857 = z
round to the nearest hundredth:
3.43 = z
If you have have 24 coins and 7 pouches, you can put 3.43 coins in each pouch.
To figure out how many coins go into each pouch, divide the number of coins by the number of pouches.
Coins per pouch = 24/7 = approx. 3.43
Diane earns $14,500 a year. She pays 11% of her gross income for federal, state, and local taxes. She is taxed at the FICA rate of 7.65%. She has 3.5% of her income withheld for personal deductions. She is paid biweekly. What is her net pay for each pay period? Round to nearest cent.
Answer:
$434.16346
Step-by-step explanation:
Given that :
Gross earning= $14500
Federal, state and local taxes = 11%
0.11 * $14500 = $1595
FICA tax rate = 7.65%
0.0765 * 14500 = $1109.25
Personal deduction :
3.5% * 14500
0.035 * 14500 = $507.50
Total deduction :
$(1595 + 1109.25 + 507.50)
= $3211.75
Net earning : $(14500 - 3211.75) = 11288.25
Since she is paid bi weekly:
Number of biweeks in a year = 52 /2 = 26
Number of payments per annum = 26
Hence,
Net pay per period :
11288.25 / 26
= $434.16346
=
Sandy sold 22 tickets, which was at least 6 more than twice the number of tickets that Teresa sold. This can be represented by this inequality, where t represents the number of tickets Teresa sold.
Which could be a number of tickets that Teresa sold?
17
11
7
14
Answer:
7
Step-by-step explanation:
Let 'x' represent the number of tickets that Teresa sold, and x is integer and x>=0 (you can not sell negative number of tickets)
6 + 2x < 22
x < 8
The range of possible number of tickets that Teresa sold is {0, 1, 2, 3, 4, 5, 6, 7}.
Find the equation of the following set of points. Then give the slope of a line
Perpendicular to the found equation.
{(1, 6), (3,-4)}
what is the parallel slope of 9x - 5y = 4
Answer:
-9x+5y=-4
Step-by-step explanation:
Answer:
m= 9/5
Step-by-step explanation:
Parallel lines have the same slope.
So if you can find the slope of the given line, you have the slope you want.
Change the line into the form
y=mx + c
The value of m
will be the slope of the line.
9x −4 = 5y ← to make the y term positive
y=9/5x − 4/5
m=9/5
Select all points that do not lie on this line.
its A and B bro. Hope it helps
plz help me
Rachel is five years younger than Monica. If the sum of their ages is 21, find the age of each girl.
plz, answer this is due today !!!
Answer:
13, 8
Step-by-step explanation
13-5 is 8. 8 + 13= 21
Answer:
Rachel is 8 and Monica is 13
Step-by-step explanation:
8 + 13 = 21
Feel free to give brainliest.
Have a great day!
Perioddddddd poohhhh
Answer:
cute ima just be bold and say that i like you your really pretty
PLEASE HURRY I GOTTA GET IN TURNED IN BY 11:59 OR I FAIL
Answer:
I think it is C. but I'm not sure
Need help with this. Please
Answer:
46
Step-by-step explanation:
6 times 2 is 12
23 times 2 is 46
Answer:
B = 46
given the equation, you can multiply 6 by 2 to get 12, so when you multiply 23 by 2 you get 46.
Peyton is collecting data on the lunch habits of students at Hyattsville Middle School. In one class, 14 students bring lunch from home, and 20 buy a school lunch. Hyattsville Middle School has 1700 students. From the data collected, how many students would Peyton predict would buy a school lunch? *
Answer:
Answer: Around 1000 students would buy a school lunch.
Step-by-step explanation:
We know that in one class, 14 students bring lunch from home, and 20 buy lunch in the school. This will be our sample.
In total we have 20 + 14 = 34 students, this will be our 100%.
The percentage of students that bring lunch from home can be estimated as the quotient between the number of students that bring lunch from home and the total number of students, times 100%.
p1 = (14/34)*100% = 41.18%
And the percentage of students that buy lunch at school can be computed in the same way:
p2= (20/34)*100% = 58.82%
Then, out of the 1700 students in middle school, we can estimate that around 58.82% of them will buy lunch in the school.
Then the exact number will be:
N = (58.82%/100%)*1700 = 1000
Around 1000 students would buy a school lunch.
Peyton spent $15.05 on 7 gallons of gas for her car. Jamal is buying the same gasoline,
but only has $8.60 to spend. How many gallons of gas can Jamal buy. Explain
your reasoning.
15.05 ÷ 7 = $2.15 per gallon
--
2.15 x 4 = $8.60
--
jamal can buy 4 gallons of gas
Can someone help me with this math problem
Answer:
$14.00 per pound for A and $12.50 per pound for B and B is offering the better one since it has a lower cost per pound
Step-by-step explanation:
Answer:
Brand A is $14
Brand B is $12.5
Brand B is offering the better value. I know this because when you get the unit rate for Brand A it is $14. When you get the unit rate for Brand B you get $12.5. So You pay less money for Brand B then Brand A.
Step-by-step explanation:
For brand A you need to first divide 70 by 5 which equals to 14
Then you divide 105 by 12 which equals 12.5
The Last problem i gave to you in the answer box.
Hopefully you understood everything.
Have a good day
Lucy’s ranch has 1,718 acres and Paul’s ranch has 2,484 acres. What is the difference in size between the two ranches
Answer:
766 acres is the difference.
Step-by-step explanation:
2,484 minus 1,718 equals 766 acres.
hope this helped!
:)
Answer:
ranch has a ton of calories
Step-by-step explanation:
Please help, thank you!
Answer:
I think B
Step-by-step explanation:
Answer:
A.) 0.32
Step-by-step explanation:
[tex]\sqrt{16}[/tex] is 4 but h = 2 which is 1/2 of the answer
so [tex]\sqrt{40}[/tex] is 6.324 and 0.32 is the closet answer
The sales tax rate in New Mexico is 8% You buy an Anime coloring book that is $18. What is the final price of the Anime coloring book? Justify how you determined the final price.
Answer: $ 19.44
Step-by-step explanation:
Give : Original price of coloring book = $18
Sales tax = 8% =0.08 [we divide number by 100 to remove %]
Now , the final price of the Anime coloring book = Original price + (Original price) x (Sales tax)
=$ ( 18+18 x 0.08)
= $ (18)(1+0.08)
= $ (18)(1.08)
= $ 19.44
Hence, the final price of the Anime coloring book = $ 19.44
A scale drawing of a car uses a scale of 1 inch = 3 feet. The length of the car in the scale drawing is 6 inches. Which proportion can be used to find the length of the actual car?
A. 1/3 = x/6
B. 3/6=1/x
C.1/6=x/3
D.1/3=6/x
Answer:
D
Step-by-step explanation:
plz help me with ts quston
Answer:
6.2
Step-by-step explanation:
I used my calculator.
What side is congruent to side AC?
5. The length of a rectangle is 3 inches less than its width. If the
perimeter is 74 inches, find the dimensions of the rectangle.
Answer:
length is 17 in, width is 20
Step-by-step explanation:
let's shape this as an algebraic equation, where x= the length of one side.
since the width is 3 inches longer than the length, x will be the length and x+3 will be the width.
the perimeter is 74 in, and the perimeter is the added length of all sides. in a rectangle, 2 sides are the length and 2 sides are the width, so:
74 = 2x + 2(x + 3)
let's distribute the 2.
74 = 2x + 2x + 6
now, we combine the x's.
74 = 4x + 6
after this step, subtract 6 from the right to add it to the left side.
68 = 4x
finally, divide both sides by 4.
17 = x
perfect! now that we know the length, we just have to add 3 to find the width.
17 + 3 = 20
Integers that satisfy the inequality -9 < x -3 < 1?
Answer:
see explanation
Step-by-step explanation:
Given
- 9 < x - 3 < 1 ( add 3 to each interval )
- 6 < x < 4
Thus integer values which satisfy the inequality are
x = - 5, - 4, - 3, - 2, - 1, 0, 1, 2, 3
Bacteria doubles every 10 minutes. If you start with 2 bacteria in a petri dish, how many bacteria will there be after 40 minutes?
Answer: I think the answer is 32 bacteria after 40 minutes.
Step-by-step explanation:
I think that's right because the bacteria that have previously multiplied will also be multiplying. 2 becomes 4, 4 becomes 8, etc. until you've reached 40 minutes. (I'm honestly unsure, but I think this is right?) I hope this helped!
Which best explains why students who can solve problems create better projects?
They complete assignments on time by asking their teacher for solutions.
They develop a better understanding because they work by themselves.
They complete assignments by motivating others to do the work for them.
They develop a better understanding because they are actively engaged.
Answer:
the answer is D
hope its helpful
Answer:
Other person is correct
Step-by-step explanation:
in case the other answer gets deleted, it's D