Answers
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.
Related Questions
A rectangular city lot has an area of 1,000 square meters. If the length of the lot is 10 meters more than twice its width, find the length and width. Write the quadratic equation.
PLS I NEED THIS FOR AN RA
Answers
Answer:y=20
Step-by-step explanation:
Answer:100
Step-by-step explanation:
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
Answers
Answer:
Step-by-step explanation:
i need some help on this question please
Answers
Answer:
15
Step-by-step explanation:
Ok so first you need to know how to calculate the volume of a cylinder
I will put the formula here: V=πr2h
Since pi is equal to 3.14 as said in the problem we can simply divide 282.6 by pi, the radius and 2
That is equal to 282.6/3.14*3*2
A little calculation shows that, the answer is 15
Hope this helps :)
Please work out all the problems on this page, no links, no i don't knows please do not take advantage of me or my points please actually answer these questions
tell me step by step
Answers
Answer:
you’re correct for all of it
Step-by-step explanation:
Answer:
1 is correct
2=17
3 is correct
4 is correct
5=3/4
6= 5
Step-by-step explanation:
Roxy has received the following quiz scores so far this year:
75, 88, 90, 96, 98, 100
Which box plot represents this data?
A box-and-whisker plot. The number line goes from 75 to 100. The whiskers range from 75 to 100, and the box ranges from 88 to 98. A line divides the box at 93.
A box-and-whisker plot. The number line goes from 75 to 100. The whiskers range from 75 to 100, and the box ranges from 88 to 98. A line divides the box at 90.
A box-and-whisker plot. The number line goes from 75 to 100. The whiskers range from 75 to 100, and the box ranges from 88 to 97. A line divides the box at 93.
A box-and-whisker plot. The number line goes from 75 to 100. The whiskers range from 75 to 100, and the box ranges from 88 to 97. A line divides the box at 90.
Answers
Answer:
A
Step-by-step explanation:
The data is from 75 to 100,
and the whiskers also go from that same data
The median is 93 which means the line will go there
90 + 96 = 186 / 2 = 93
The box goes from 88 to 98 because it includes the upper and lower quartile, and allows room for the middle two numbers to become the median and split the data.
Answer:
a
Step-by-step explanation:
edge 2021
hope i helped :)
PLZZZZZZZZ HELP IM SO BAD AT THIS
Answers
Answer:
100% of 188=188
50% of 188=94
25% of 188=47
75% of 188=141
Step-by-step explanation:
50% of 188 = 94
25% of 188 = 47
75% of 188 = 141
What repeated addition equals to 3/4
Good luck シ
Answers
Answer:
1/4 x 3 or 1/4+1/4+1/4
Step-by-step explanation:
1/4 + 1/4 + 1/4
2/4+1/4
3/4
Answer:
its 25
Step-by-step explanation:
if you put down 3 25's then its 75 witch is equal to 3/4
HELPP I NEED THIS ASAP
Answers
Answer:
you have it done? what do you need
Step-by-step explanation:
help me with both questions
plz read carefully so you can help me
Answers
Answer:
2. Both
3. e = 3, f = -5, g = 2
Step-by-step explanation:
2. Order doesn't affect product
3. You get e • f = -15, e • g = 6, f • g = -10 from the problem.
e = -15/f (solve for e)
(-15/f) • g = 6 (plug into second equation)
(-15g/f) = 6 (multiply)
-15g = 6f (multiply)
(-5g/2) = f (divide)
(-5g/2) • g = -10 (plug into last equation)
(-5g^2)/2 = -10 (multiply)
-5g^2 = -20 (mulitply)
g^2 = 4 (divide)
g = 2 (square root)
e • g = 6 (plug in for g, solve for e)
e • 2 = 6
e = 3
f • g = -10 (plug in for g, solve for f)
f • 2 = -10
f = -5
I don't know if your teacher made a typo because I tried this multiple times and got the same answer. I don't know how e is negative.
Answer:
1. both are correct
2.f=5 g=-2 e=-3
Step-by-step explanation:
for number two, because e is negative you can logically figure out that f is positive and g is negative because a negative times a negative is a positive and a negative times a positive is a negative. you are then left with
-e times f=
-e times -g=
f times -g=
then by the process of substitution and trial and error, you can logically conclude that f=5 g=-2 e=-3
(05.03)Bev has to cut her grandma's grass this weekend and wants to know exactly how much area she will be cutting. Calculate the area of the polygon. Be sure to show all your work and explain your answer.
+17 pts BRAINLIEST ONLY IF FAST
Answers
Six-sided polygon that includes two isosceles right triangles, one with height and base of 15 feet, the other height and base of 4 feet, and one rectangle measuring 25 feet by 4 feet.
To Find : Area of Polygon
Solution:
Area of triangle = (1/2) bh
= (1/2) * 15 * 15
= 112.5 sq feet
= (1/2) * 4 * 4
= 8 sq feet
Area of rectangle = 25 x 4 = 100 sq feet
Total area =112.5 + 8 + 100
= 220.5 sq feet
Area of Polygon = 220.5 sq feet
4(p-5) = 2p+18 i need all the steps
Answers
Answer:
p = 19Step-by-step explanation:
4(p-5) = 2p+18
4p - 20 = 2p + 18
4p - 2p = 18 + 20
2p = 38
p = 38 ÷ 2
p = 19
Then -2p each side
2p-10=18
-10 each side
2p=8
P=4
EXPERT HELP: DON'T GUESS EXPLAIN THE ANSWER OR YOU WILL BE REPORTED
Answers
Answer:
The correct answer is A.
Step-by-step explanation:
Given that a weather researcher compared Dublin, Ireland to Madrid, Spain, and she found that Dublin had a mean average temperature of 56.1ºF with a mean average deviation of 6.4ºF, while Madrid had a mean average temperature of 68ºF with a mean average deviation of 12.1ºF, the following conclusions can be drawn:
68 is higher than 56.1, so clearly Madrid has a higher average temperature than Dublin.
In turn, 12.1 is greater than 6.4, with which Madrid has a greater temperature variation than Dublin.
A salesperson works 40 hours per week at a job where he has two options for being paid. Option A is an hourly wage of $18. Option B is a commission rate of 8% on weekly sales. How much does he need to sell this week to earn the same amount with the two options?
Answers
Answer:
$9,000
Step-by-step explanation:
Option A:
In a week he will earn 720 since 18 × 40 = 720
Option B:
(x=the amount of weekly sales)
8x ÷ 100=720
8x=72,000
x= 72,000 ÷ 8
72,000 ÷ 8 = 9,000
The salesperson needs to make a weekly sales of $9,000 to earn the same amount with both options.
Find the volume of the pyramid.
Answers
[tex]A=10^2+2*10\sqrt{\frac{10^2 }{4} +12^2} \\A=100+2*10\sqrt{25+144}\\A=100+2*10*13\\A=100+260\\A=360[/tex]
There are 32 munchkins in the box. You want to distribute the munchkins to Amir and Isaac so that the ratio of Amir's munchkins to Isaacs is 5:8.
How many munchkins will each person get? Show/explain your work
Answers
So 5+8=13. A will get 5/13 parts of the total
5/13*32(total)=12.3 since he can’t get .3 we round and Amir gets 12 leaving 20 for Isaac.
How do i distribute this into an equivalent expression? -12(-2+4)
Answers
Step-by-step explanation:
-12 x -2
-12 x 4
=24+-48
Final answer is -24
Answer:
24-48=-24
Step-by-step explanation:
-12x-2=24
((since two negative numbers multiplied equals a positive))
-12x4=-48
((since a negative times a positive equals a negative))
Soooooooo
24-48=-24
Hope this helps!
PLZ HELP RN! I WILL GIVE BRAINLIEST AND 20 POINTS TO BEST ANSWER AND NO LINKS!!!!
Let me rephrase that NO.FRIDGING.LINKS! OR FAKE ANSWERS! AND MAKE SURE TO GIVE A FULL ANSWER AND NOT A BAD ANSWER
Also, just in case you still don't understand, if you reply just to get points, I will legit call brainly and tell them I want my points back fyi. Thank you! :D
Answers
Answer:
42 a : (>) B(<)
43. b
44.????
Step-by-step explanation:
im soooo sorry but i dont know 44
Use the remainder theorem to find P(−2) for P(x) = 2x^4+2x^3−2x-4
Specifically, give the quotient and the remainder for the associated division and the value of P(−2).
-The Answer should have the Quotient and Remainder for points.
Answers
Answer:P(2) = 2(2)³ - 2(2)²- 3
= 16 - 8 - 3
= 5
Remainder or value of P(2) = 5
Quotient = (2x³- 2x² - 3)/ x-2 = 2x² + 2x + 4
Step-by-step explanation:
Answer:
P(2) = 2(2)³ - 2(2)²- 3
= 16 - 8 - 3
= 5
Remainder or value of P(2) = 5
Quotient = (2x³- 2x² - 3)/ x-2 = 2x² + 2x + 4
Step-by-step explanation:
Find the area of the figure to the nearest hundredth.
HELP MEH
Answers
So first find the area of the box
Which is 4 times 10 which equals 40
The formula of a circle is area=(1/2)pi times radius square root
And the radius should be 5 since it’s half on 10
The answer is 39.27
The add 40
Which equal 79.27
Sorry if I’m wrong but I hope this helps
I'll mark the best or first answer as brainless.
Answers
Hope this helps!
Please answer you will get 10 points.
Answers
Answer:
your answer will be 126
Step-by-step explanation:
8x+78=2x+114
8x-2x=114-78
6x=36
x=36/6=6
<B=2(6)+114
= 126
EXPERT HELP I'LL GIVE BRAINLIEST: C or D
Answers
Answer:
Step-by-step explanation:
A=(3.14d^2)/4
A=0.785d^2
A=0.785(10^2)
A=78.5 yd^2
please help will mark brainliest!
Answers
HELP PLEASE ANSWER QUICKLY!
Answers
Answer:
The answer is 3
Step-by-step explanation:
Find the surface area of a cube that is 5/8
Answers
Carly and Ramil share 7 yards of ribbon equally. How
much ribbon will each get?
Answers
Answer:
3.5 yards each
Step-by-step explanation:
Divide 7 by the two people to get 3.5. Hope it helped!
A freight train from city A to city B and a passenger train from city B to city A left the cities at the same time, at 10 am, heading towards each other. The distance between the cities is 360 miles. The freight train is traveling at 50 mph, the passenger train is traveling at 70 mph.
At what time will the trains pass each other?
Answers
Answer:
Step-by-step explanation:
1 pm i think
Answer:
1:00 pm
Step-by-step explanation:
Find the product
-5(-3)(-3)
Answers
Answer:
-45
Step-by-step explanation:
-5(-3)(-3) =
15(-3) =
-45
Hope that helps!
Answer:
-45
Step-by-step explanation:
ANSWER ASAP PLEASE
The following triangles are identical and have the correspondence ΔABC↔ΔYZX
. Find the measurements for each of the following sides and angles. Figures are not drawn to scale.
∠A = _______
Answers
Answer:
A =Y
Step-by-step explanation:
A = Y
PLZ HELP QUICK
Which value from the set {12, 16, 21, 36} makes 2/3-n=19 true?
Answers
Answer: 36
Step-by-step explanation: when you solve the problem 2/3n-5=19 you get 36.
Answer:
36
Step-by-step explanation: