Answers
Answer:
x = [tex]-\frac{1}{3}[/tex], y = 2
Step-by-step explanation:
3x + 3y - 7 = 12x + y
6y - 12x - 1 = -45x
(3x - 12x) + (3y - y) = 7
(-12x + 45x) + 6y = 1
-3(-9x + 2y = 7)
33x + 6y = 1
27x - 6y = -21
33x + 6y = 1
60x = -20 -> x = -20/60 = -1/3
-9x + 2y = 7 -> y = [tex]\frac{7+9x}{2}[/tex] = [tex]\frac{7+9*-\frac{1}{3}}{2}[/tex] = 2
Related Questions
Find the slope of the
line through the
points (1,-2) and (-7,4)
Answers
Answer:
-3/4
Step-by-step explanation:
To find the slope, plug the coordinates into the slope formula.
y2 - y1 / x2 - x1
4 - (-2) / -7 - 1
6 / - 8
-3/4
At the store, Craig bought 2 staplers and 4 pads of paper for $24. On
another day, he bought 3 staplers and 3 pads of paper for $21. How
much does each a stapler and a pad of paper cost?
Answers
Answer:
Step-by-step explanation:
2x+4y+24
3x+3y=21
HELP ME PLEASE DUE NOW 4. From last night to this
morning, the temperature
rose 18°F. The temperature
this morning was 54°F.
Let
tequal the temperature last
night. Write and solve an
equation for the
temperature last night.
Answers
Answer:
36 degrees
Step-by-step explanation:
Ok so wouldnt you have to subtract 54 minus 18? and if so then
what the lateral area is of this rectangular prism
I asked this question ten times and haven’t gotten a serious answer pls just tell me
Answers
Answer:
1410
Step-by-step explanation:
Perimeter of base * by height.
94*15
1410
56°
101°
Find the value of the missing angle a.
Answers
Answer:
the x angle = 45 ............. 45
Triangle add up to 180°
Add 79 and 56 and 180-135= 45
45°
What is log152 rewritten using the power property?
Answers
Answer: Power property: That means the power m can be brought down to front of the logarithm.
Step-by-step explanation:
Logarithmic function, Log 152 can be written as Log 19 + 3 log2.
What is a logarithmic function?The opposite of an exponential function is a logarithmic function. A log function and an exponential function both use the same base. An exponent is a logarithm. f(x) = bˣ is how the exponential function is expressed. The formula for the logarithmic function is f(x) = log base b of x.
Given, A logarithmic function log152
Simplifying the Function,
=> log152
=> log( 19 * 8)
From the additional property of the log,
=> log 19 + log 8
=> log 19 + log2³
From the power property of the logarithmic
=> log 19 + 3 log2
Learn more about logarithmic functions here:
https://brainly.com/question/3181916
#SPJ7
solve the linear equations elimination -2x+3y= 7 5x+8y= -2
Answers
Answer:
x=-2, y= 1
Step-by-step explanation:
Given data
-2x+3y= 7 --------------1
5x+8y= -2--------------2
Multiply 1 by 5 and 2 by 2 and add
-2x+3y= 7 X 5
5x+8y= -2 X 2
-10x+15y= 35
10x+16y= -4
0x+31y= 31
31y= 31
y= 31/31
y= 1
put y= 1 in eqn 1
-2x+3y= 7
-2x+3(1)= 7
-2x+3=7
-2x= 7-3
-2x= 4
x=- 4/2
x= -2
A. What is the perimeter of the rectangle?
B. What is the area of the rectangle?
Answers
Answer:
A) perimeter = 3 + 3 + 8 + 8 = 22 units
B) area = 3 x 8 = 24 units²
Step-by-step explanation:
PLZ HURRY
10 POINTS AND BRANLIEST!!
1. Hilary's Horse Hideaway is buying dirt to fill their circular training area. The training circle is 28 feet across. What is
the area of the training arena?
2. The dirt is sold in truckloads that cover 75 sq feet of ground. How many truckloads of dirt will Hilary need?
Answers
Answer:
1. 615.75
2. 9
Step-by-step explanation:
please help me w this!!!!!!!!
Answers
Answer:
Angle KJL
Step-by-step explanation:
Right Triangle Square
Answer:
It's KJL
Step-by-step explanation:
Like u can see the red thingy is 90°.
Use the Quotient Rule to Simplify. *
need help asap pls
Answers
Step-by-step explanation:
[tex] \frac{ {8}^{8} }{ {8}^{3} } \\ = {8}^{8 - 3} \\ = {8}^{5} [/tex]
Use Quotient Rule to simplify
8(8-3) (that isn’t multiply my phone doesn’t have option to type in correctly)
8-3 to 5 gives you answer B
Hope this helps!
the LL theorem is a special case of the
Answers
Answer:
the LL theorem is a special case of the SAS Postulate or SSS Postulate
Step-by-step explanation:
find the distance between -2 1/4 and 1 1/2
Answers
First, you need to get out of the negatives.
-2 1/4+ 2 1/4= 0
2 1/4+ 1 1/2= 3 3/4
I’m sorry i this isn’t what your looking for :/
WILL GIVE BRAINLIEST! PLEASE HELP!
Which of the following
expresses the possible number of.
positive real solutions for the polynomial equation shown
below?
5x3 + x2 – 7x + 28=0
A. Two or zero
B. One
C. Three or one
D. Zero
Answers
Answer:
C
Step-by-step explanation:
Since the polynomial is of 3rd degree, it has 3 solutions. The possibilities are 3 real solutions or 1 real solution and 2 imaginary solutions.
Therefore, C is the correct answer
Evaluate 6 + x when x = 3.
Answers
Answer:
6 + x = 9
Step-by-step explanation:
We know that x = 3, and that we need to add x (which equals 3) to 6.
So, all we need to do is add 6 + 3.
6 + x = 9
We know this because for the expression 6 + x, we replace x with it's given value, which is 3.
⬇
6 + 3 = 9
Sakura speaks 150 words per minute on average in Hungarian, and 190 words per minute on average in Polish. She once gave cooking instructions in Hungarian, followed by cleaning instructions in Polish. Sakura spent 5 minutes total giving both instructions, and spoke 270 more words in Polish than in Hungarian.
How long did Sakura speak in Hungarian, and how long did she speak in Polish?
Sakura spoke for _____ minutes in Hungarian and for _____ minutes in Polish.
Answers
Hungarian and for 3 minutes in
Polish.
Debbie McAdams paid 6% interest on a $14,500 loan balance. Jan Burke paid $12,480 interest on a $97,500 loan. Based on 1 year
a. What was the amount of interest paid by Debbie?
Interest paid by Debbie
b. What was the interest rate paid by Jan? (Round your answer to the nearesi tenth percent.)
Interest rate paid by Jan
c. Debbie and Jan are both in the 28% tax bracket. Since the interest is deductible, how much would Debbie and Jan each save in
taxes? (Round your answers to the nearest cent.)
Debbie
Jan
Save in taxes
Answers
Answer:
C
Step-by-step explanation:
what is 2x-4+7x=54.5
Answers
Answer:
=6.5
Step-by-step explanation:
2−4+7=54.5
9−4=54.5
9−4+4=54.5+4
9=58.5
99=58.59
=6.5
hope i helped plz mark me brainlest
1+1=1268934457687423456779052436869867543?
Answers
Answer:
2
Step-by-step explanation:1+1=2 its 2 okay its 2 not 1268934457687423456779052436869867543
also need help with this one !
Answers
Answer:
m = 3
Step-by-step explanation:
I'm sure of it...
Hope it helps u !!!
Answer:
m=3
Step-by-step explanation:
The points scored by a football team in their first 8 games of the season were {7, 20, 13, 26, 16, 39, 18, 13}. What is the difference between the mean and the median number of points scored? Question 9 options:
Answers
Answer:
19
You have to add up all the sums and divide it by 8 so therefore your answer is 19.
Answer:
the difference between them is 22
Step-by-step explanation:
. Stephanie has a jewelry box shaped like a cube with a volume of 125 cubic inches. Write an expression to find the edge length of the jewelry box in inches.
Answers
Answer:
25
Step-by-step explanation:
To get this right, we need to get the correct formula for the volume of a cube.
Imagine this:
What is the area of a square? Easy ! Length of the edge times itself. You can imagine what this means as the edge if the we have one line E move straight along an E-long line, the path it made is the square.
Similarly to the cube. Imagine what can be a volume of a cube with edge E that has something to do with the edge?
That's right. A square with edge Emove vertically straight in a E-long line. So the correct volume should be the area of the square times the length of its edge. But the area of the square is already the edge times itself
In formula, if a cube has volume V and edge length E, we have the equation.
V = E×E×E
A woman is looking up at a bird perched on top of a tree. Her line of sight to the bird is at an angle of elevation of 44°. If the woman’s eyes are 5 feet off the ground and she is 17 feet away from tree, how far up the tree is the bird perched?
Group of answer choices
A. 17.6 ft
B.16.4 ft
C. 21.4 ft
D. 22.6 ft
Answers
Answer:
21.4
Step-by-step explanation:
Please help! I need this asap! Thank you. (^-^)
Answers
Answer:
b
Step-by-step explanation:
You earn $102 for doing 12 hours of yard work. Your friend earns $120 working at a store for 15 hours.
a. Who earns more per hour?
b. What would you earn in if you did 15 hours of yard work, paid at the same hourly rate?
Answers
Answer:
You earn more per hour and you would get $127.50
Step-by-step explanation:
You can find how much money you get per hour by dividing! 102 divided by 12 is 8.5 and 120 divided by 15 is 8 so you get more!
27 students are going on a field trip and 1 student is staying at school. What is the ratio of
the number of students who are staying at school to the number of students who are going
on the field trip?
Answers
Answer: 1/28
Step-by-step explanation:
johns dinner costs $52.30. Sales tax is 6.5% and he wants to leave a 20% tip for the waitress. what is the total cost for johns meal ???????
Answers
Answer:
The total cost for john's meal would be $66.84
Step-by-step explanation:
6.5% of 52.30 = 3.3995
52.30 plus 3.3995 = 55.6995
20% of 55.6995 = 11.14$
55.6995 + 11.14 = $66.84
Chakan worked at the warehouse after school. He earned $9.25 per hour stacking boxes. Which equation correctly relates Chakan’s total earning, d, to the number of hours he worked, h? (6.EE.9)
x a. d=9.25/h
x b. 9.25/d
x c. d = 9.25h
x d. h = 9.25d
Answers
Answer:
C. d=9.25h
Step-by-step explanation:
total earnings= 9.25 x number of hours worked
Find the value of d, the length of the diagonal across the square. If
necessary, round your answer to 2 decimal places.
20 points pls help!
Answers
Answer:
28.28
Step-by-step explanation:
The diagonal of a square is [tex]\sqrt{2}[/tex] times the length of a side of the square.
So the diagonal of your square is 20[tex]\sqrt{2}[/tex] = 28.28
which one is it?? is it true or false..
Answers
Answer:
true
Step-by-step explanation:
i think its helpbrainliest pls