Answers
Answer:
F) The solution to the system is (1/3,3)
Step-by-step explanation:
Let's attempt to solve this system:
Given:
9x+2y=9
-3x+y=2
Set up elimination:
9x+2y=9
3(-3x+y=2)
9x+2y=9
-9x+3y=6
________
5y=15
y=3
Plug y=3 into one of the original equations:
-3x+y=2
-3x+(3)=2
-3x+3=2
-3x=-1
x=1/3
So it is clear that there is only one solution pair that works. The correct answer is F) The solution to the system is (1/3,3)
please give me points
Related Questions
Work Out The Area of this circle. Take n to be 3.142 and write down all the digits given by your calculator.
Answers
3.142x49=135.958
=153.958cm2
Answer: 153.958
Step-by-step explanation:
Find the value of x that satisfies 1+3(1+3(1+3(1+x))) = 13.
Answers
Answer:
The conclusion of the Mean Value Theorem says that there is a number
c
in the interval
(
1
,
3
)
such that:
f
'
(
c
)
=
f
(
3
)
−
f
(
1
)
3
−
1
To find (or try to find)
c
, set up this equation and solve for
c
.
If there's more than one
c
make sure you get the one (or more) in the interval
(
1
,
3
)
.
For
f
(
x
)
−
−
2
x
2
−
x
+
2
, we have
f
(
1
)
=
−
1
, and
f
(
3
)
=
−
18
−
3
+
2
=
−
19
Also,
f
'
(
x
)
=
−
4
x
−
1
.
So the
c
we're looking for satisfies:
f
'
(
c
)
=
−
4
c
−
1
=
f
(
3
)
−
f
(
1
)
3
−
1
=
−
19
−
−
1
3
−
1
=
−
18
2
=
−
9
So we need
−
4
c
−
1
=
−
9
. And
c
=
2
.
Note:
I hope you've been told that actually finding the value of
c
is not a part of the Mean Value Theorem.
The additional question"find the value of
c
" is intended as a review of your ability to solve equations. For most functions, you will not be able to find the
c
that the MVT guarantees us is there..
Answer:
x = -1
Step-by-step explanation:
Simplify by starting in the innermost parentheses and moving outwards:
[tex]1 + 3(1 + 3(1 + 3(1+x)))=13\\1 + 3(1+3(1+3 + 3x)) = 13\\1 + 3(1 +3(3x + 4)) = 13\\1 + 3(1 + 9x + 12)) = 13\\1 + 3(9x + 13) = 13\\1 + 27x + 39 = 13\\27x + 40 = 13\\27x = -27\\x = -1[/tex]
The Wellbuilt Company produces two types of wood chippers, economy and deluxe. The deluxe model requires 3 hours to assemble and 1/2 hour to paint, and the economy model requires 2 hours to assemble and 1 hour to paint. The maximum number of assembly hours available is 30 per day, and the maximum number of painting hours available is 9 per day. (a) Write the system of inequalities that describes the constraints on the number of each type of wood chipper produced. (Let x represent the number of deluxe models, and let y represent the number of economy models.)
Answers
Answer:
3x + 2y ≤ 30
0.5x + y ≤ 9
Step-by-step explanation:
Number of deluxe model = x
Number of economy models = y
Assembly hours :
Maximum hours = 30
Deluxe model = 3 hours
Economy model = 2 hours
3x + 2y ≤ 30
Painting :
Maximum hours = 9
Deluxe model = 1/2 = 0.5 hours
Economy model = 1 hours
0.5x + y ≤ 9
Therefore the inequality constraints are:
3x + 2y ≤ 30
0.5x + y ≤ 9
Find the area of each.
11)
14 in
Help plz
Answers
Answer:
The area would be 153.86
Step-by-step explanation:
Since the diameter is 14, the radius would be 7.
The area is pi times the radius squared.
7 squared is 49.
If your using 3.14 for pi, then its 3.14 times 49.
That gives you 153.86.
Graph the solution
Answer: z ≤ 17
Answers
Hope that helps! Have a great Day
A restaurant uses 153 plates in 3 hours, how many plates will they use in 10 hours? REMEMBER TO INCLUD
MEASURE (PLATES) IN YOUR ANSWER.
Answers
Answer:
the correct answer would be 510
Step-by-step explanation:
you divide 153 by 3 and then multiply the answer of that (51), by 10-and then wham bam yes ma'am you have the answer, 510. hope this helps! can i have brainliest pls :3
Kamal is buying supplies for a science lab. He needs a piece
of wire 7 feet long. He finds wire for sale at a store that lists the
lengths in inches. How many inches of wire should Kamal buy?
A 19 in.
B
72 in.
74 in.
84 in.
Answers
Answer:
kamal needs to buy 84 in of wire.
Step-by-step explanation:
multiply the length value by 12:
if he wants 7 feet, and the store only sells it in inches, then we know what a foot is twelve inches so 12x7=84.
hope this helped! :D <3
A glass paperweight is shown below.
The paperweight is a hemisphere with diameter 9cm..
Find the surface area of the paperweight.
Answers
Answer:
[tex]A=190.75\ cm^2[/tex]
Step-by-step explanation:
The diameter of a hemisphere, d = 9 cm
Radius, r = 4.5 cm
We need to find the surface area of the paperweight. The formula for the surface area of a hemisphere is given by :
[tex]A=3\pi r^2\\\\A=3\times 3.14\times (4.5)^2\\\\A=190.75\ cm^2[/tex]
So, the surface area of the paperweight is [tex]190.75\ cm^2[/tex].
Solve for x: -2x - 5 = 4Math
Answers
Answer:
x=-4.5
Step-by-step explanation:
add 5 on both sides -2x=9
divide but -2 on both sides
x=-4.5
CHECK YOUR ANSWER
plug in x -2(-4.5)-5=4
9-5=4
Someone who is "for" or in favor of an idea is a
Answers
Answer:
are you talking about an ideator??
The school cafeteria sells two kinds of wraps: vegetarian and chicken. The vegetarian wrap costs $1.00 and the chicken wrap costs $2.50. Today they made $191.50
from the 103 wraps sold. How many of the wraps sold were vegetarian?
Answers
Answer:
Step-by-step explanation:
v+2.5c=191.5 and c+v=103, so c=103-v, using this c in first equation gives you
v+2.5(103-v)=191.5
v+257.5-2.5v=191.5
-1.5v=-66
v=44
So 44 vegetarian wraps were sold.
2424 is 75\%75%75, percent of what number?
Answers
im pretty sure its 32 i think
Answer:
32
Step-by-step explanation:
The point W(-1,6) translated 5 units left. What are the coordinates of the resulting point, W? PLS HELP ME!!
Answers
Ryan is trying to determine whether 2.7x – 5.9 is equivalent to 2.8x – 5.9. To test this, he substitutes 0 for x into both expressions. Explain why this will not give him the correct answer. send help ty
Answers
Answer:
Nggak tahu bahasa inggriis aku bang
Answer:
The coefficients of x are different in the expressions, but the constant values are the same. Zero times any value is zero, so both expressions will be equal to -5.9. If Ryan tried any other number, he would see that the expressions are not equivalent.
PUT THIS INTO YOUR OWN WORDS bc I just put what Edg said :)
Is 1/6 greater or 1/24
Answers
Answer:
yes
Step-by-step explanation:
Answer: 1/6 is greater than 1/24
=========================================================
Explanation:
Let's assume that 1/6 is equal to 1/24 for now. We'll see later this is false.
1/6 = 1/24
1*24 = 6*1 .... cross multiply
24 = 6
The last equation is false, so the first equation is false.
To fix things, we need to replace every equal sign with a greater than sign like so
1/6 > 1/24
1*24 > 6*1
24 > 6
Now each of those three statements are true, since the last statement is true. This shows that 1/6 is greater than 1/24.
----------------
We can take another approach to use the calculator to see that
1/6 = 0.167 approximately
1/24 = 0.042 approximately
We can see that 0.167 is the larger decimal, so 1/6 is the larger fraction.
If you want, you can move the decimal point over 3 spots to the right for each decimal number. So that would mean 0.167 becomes 167, and 0.042 becomes 42. Then it becomes more clear that 167 is the larger value, helping confirm that 0.167 is the larger decimal.
Help pls thank you so much
Answers
Answer:
60
Step-by-step explanation:
Answer:
60
Step-by-step explanation:
25+35=60
Solve this equation 1/4 x 10?
Answers
Answer: 2.5
Step-by-step explanation:
Answer:
2.5
Step-by-step explanation:
Have a great day :)
Which is equivalent ratio to 4:5 (select all that are true)
A: 55:44
B: 40:50
C: 3:11
D: 55:40
Answers
A construction worker dropped a hammer while building the Grand Canyon skywalk, 4000 feet above the Colorado River. Use the formula, t = h 4 , to find how many seconds it took for the hammer to reach the river. Round your answer to the nearest second.
Answers
Answer: Hammer reaches river after 15.8 seconds.
Step-by-step explanation:
Use formula: t = square root of h divided by 4. In this problem h = 4,000.
Therefore,
T = square root of 4,000 divided by 4.
T = 15.8 seconds
Values of p and q? Answers in exact terms please.
Answers
19) If the wholesale price of a pair of shoes is $32.25, and the markup is 105%, what is the retail price of the item.
Answers
Answer:
$66.11
Step-by-step explanation:
32.25 increase 105% =
32.25 × (1 + 105%) = 32.25 × (1 + 1.05) = 66.1125
You have $1,085. Then you received $2,946 from an uncle. How much money do you have now?
Answers
$4,031
1,085 + 2,946 = 4,031
Identify which question has a percent over 100% and which question has a percent under 100%?
50 is what percentage of 10?
7 is what percentage of 14?
Answers
7* 14/100 = 0.98
Solve for x
1 7 1
2
х
Your answer
Answers
Answer:
x = 4
Step-by-step explanation:
3x -5 = -2 + 9
-2 + 9 = 7 so now its 3x - 5 = 7
add 5 to the -5 so it cancels itself out. then add the 5 to 7 so it become 12. the you have 3x = 12
divide 12 ÷ 3 = 4
x = 4
3x - 5 = -2 + 9
add -2 + 9 and that gives you 7 so now
3x - 5 = 7 you add -5 on both sides but when you switch the -5 over with the 7 is becomes +5 so now you have 3x = 12 since 5 + 7 is 12
then you’ll divide 3 on both sides and that leaves you with x = 4
Directions: Solve the following system of equations using substitution.
Show your complete steps and make sure to have your solution as (x, y).
y = 3x - 5
5x - 4y = -3
Answers
5x-4y=-3...(2)
By sub. (1) into (2),we have
5x-4(3x-5)=-3
5x-12x+20=-3
-7x=-23
x=3(cor. to l d.p.)
By sub. x=3(cor. to l d.p.) into (1),we have
y=3*3-5
y=4
The solution is (3,4) (cor. to l d.p.)
URGENT
I put an answer already but I am not sure if it is right. I need a Confirmation.
Answers
Answer:
I think you are correct.
Step-by-step explanation:
Sorry if I am wrong
Robin can clean 72 rooms in 6 days
How many rooms can Robin clean in 9 days?
A. 64
B.108
C. 648
D. 9
Answers
Answer:
B
Step-by-step explanation:
6/2*3=9
so 72/2*3= 108
so B
if my answer helps please mark as brainliest.
Answer:
B
Step-by-step explanation:
Number of rooms to be cleaned in 6 days = 72
Number of rooms to be cleaned in 1 day = 72 ÷ 6 = 12
Number of rooms to be cleaned in 9 days = 12 * 9 = 108 days
Pls help extra points and mark brainlist
Answers
Answer: 3
Step-by-step explanation:
A term is a group of numbers and variables.
In your expression, there are 3 term: 3k, 10, and 5n^3A coefficient is just the number attached to the variable.
In the term 3k, the first one in your expression, the 3 is the coefficient because it is being multiplied by an unknown, k. There is also another term with a variable in your expression: 5n^3. 5 would be the coefficient because it is being multiplied by an unknown, n, multiplied by itself three timesA constant is just a number.
In your expression, 10 is a constant because it doesn't have a variable, so no matter what the other variables are, that term will always stay 10Hope this helps :)
You plan on purchasing a car in the next year. The car that you are interested in lists for $23,000 after taxes, license, and doc fees. You currently have two-thirds of the vehicles value saved and you get paid $1,312.00 twice a month. Given that monthly expenses total $1,150.12, Social Security is 6.2% of your income, Medicare is 1.45% of your income, and you pay State and Federal taxes in the amount of $53.00 and $101.35, respectively, twice a month, determine in how many months you will have to save for so that you can purchase the car without financing. Round all your answers to the nearest cent. Round your answer to the nearest month.
a.
7 months
c.
8 months
b.
6 months
d.
9 months
Answers
Answer:
c. 8 months.
Step-by-step explanation:
First let's break down all the expenses and taxes to come up with how much we save each month and subtract it to our total salary monthly.
Total Salary : $1312.00 x 2 = $2,624.00
Current Savings : 2/3 or 0.67 = $15333.33
| Expenses |
Monthly Expenses : $1,150.12
Social Security : 6.2% or 0.062 x 2,624 = $162.69
Medicare : 1.45 or 0.0145 x 2,624 = $38.05
Taxes: $53 + $101.35 = 154.35 x 2 = $308.7
So we sum up all the expenses.
= $1659.56 Total Expenses.
Now we have to find how much extra money we have each month.
= $964.44 Extra Money
Now we subtract our current savings to the total price of the car.
= -7666.67 Balance
Now we divide the total balance to our extra money monthly.
= 7.949 Months or 8 Months
Please help I’ll mark you as brainliest if correct!
Answers
Answer:
45 i think
Step-by-step explanation: