3a+3b+2b=3a+5b
solve for a: a=-5b/3
solve for b: b=-3a/5
Answer:
3a+5b
Step-by-step explanation:
3(a+b+)2b
the first thing you'd do would be distribute 3 to a and b
3a+3b+2b
you then would combine like terms which are 3b and 2b
3a+5b
need this for homework
1.What happens when fertilizer ends up in waterways?
2. Describe eutrophication.
3. What has happened at the mouth of the Mississippi River?
Answer:
1.When manure or commercial fertilizers enter surface water, the nutrients they release stimulate microorganism growth. Without sufficient dissolved oxygen in surface water, fish and other aquatic species suffocate. The resulting dead fish and other aquatic species degrade the water quality and cause unpleasant odors.
2.Eutrophication is a significant increase of algae (microscopic organisms similar to plants) due to the greater availability of one or more growth factors necessary for photosynthesis, such as sunlight, carbon dioxide and nutrients (nitrogen and phosphorus)
3. I don't know I am way to tired sorry
Step-by-step explanation:
1. When manure or fertilizers enter water, the nutrients they release stimulate microorganism growth. These microorganisms reduce the dissolved oxygen content of the water body. Without sufficient dissolved oxygen in water, fish and other animals living in water suffocate.
2. Eutrophication is the process by which water bodies are enriched with minerals and nutrients.
Sorry I don't know the answer to question 3
Please help please please help and actually answer please
smh someone helpp mee
Answer:
beep
Step-by-step explanation:
1. length, 2. mass, 3. associated rate, 4. weight, 5. unit rate, 6. percent, 7. U.S. etc.
11. equivalent ratios, 12. capacity, 10. internstional system of units, i think 8. rate, and i think 9. rate unit
plz help me asap I will give the brainiest to a good answer
A large university accept 40% of the students who apply. Of the students the university accept, 25% actually enroll. If 10,000 students apply, how many actually enroll?
Answer:
2,500
Step-by-step explanation:
Multiply 10,000 with 1/4 and since 1/4 equals to 25%.
10,000 x 1/4 = 2,500
Your answer is there and I hope this helps!
Answer:
2,500
Step-by-step explanation:
Which situation would require determining volume?
A Nick wants to know how much tile it takes to cover the floor of a room.
B Sarah wants to know how much water her fish tank can hold.
C Min wants to know how much fence is needed to go around the edges of his yard.
D Kiki wants to know how wide her window is.
Answer:
b
Step-by-step explanation:
because volume is like filling and 3d everything else is area and perimeter
Out of all the situations described, the only one where volume would need to be determined is B Sarah wants to know how much water her fish tank can hold.
When it comes to any measurement involving how much water is needed for something, volume is always the best measurement because water is measured in volume. Sarah's situation is therefore the situation that requires volume.
The other options are wrong because:
Knowing how much tile to use requires area Knowing how much fence will go around a year requires perimeter Knowing how wide a window is requires measuring the width of the windowIn conclusion, Sarah needs to determine volume to know how much water the tank can hold.
Find out more at https://brainly.com/question/15533435.
Please help me I'm so confused
Answer:
a: 256
B: (1,4), (2,3), (3,2), (4,1)
c: $335.36
d: 2012.16in.
Step-by-step explanation:
a:2^3×2^5=2^8=256
b:2^1×2^4=2^2×2^3=2^3×2^2=4^1×2^1=32
c:2^8×2^8=2^16=33536 which means there are 33536 pennies which are equal to $335.36.
b:33536 pennies × 0.06 = 2012.16
I have math :') can u help me pweaseee
Answer:
1-the temperature
2-tia
3-tony
4-the table
Step-by-step explanation:
If 1/4 of a number is 5 less than 2/3 of the same number, what is the number?
Answer:
12
Step-by-step explanation:
x/4 = (2x/3) - 5. Solve for x
-5x/12 = -5
-5x = -60
x = 12
Please help me with this question its due in 5 minutes. I will give brainliest
Answer:
I guess it is scnd one.
Step-by-step explanation:
some text
Collect like terms to simply the expression
3r + (-3r) =
Blank 1:
Question 8 (1 point)
Collect like terms to simplify the expression
2j + (-9j) =
Blank 1:
Question 9 (1 point)
Collect like terms to simplify the expression
12 + 4b - 3 + 2c =
Blank 1:
Question 10 (1 point)
Collect like terms to simplify the expression
7y + 8 - 2y + 4 =
Blank 1:
Question 11 (1 point)
Collect like terms to simplify the expression
2a + 3b - 3a + 4c - b =
(This is not the same as the question before. Look closely.)
Blank 1:
Question 12 (1 point)
What is the perimeter of this triangle (in simplest form)?
Your answer should not have parentheses or multiplication symbols !
Blank 1:
Question 13 (1 point)
Which TWO expressions below are equivalent? (Make sure to click TWO answers !)
a
2(x - 5) + (-7)
b
2x - 17
c
2x - 12
d
x + (-7) + x + 5
e
x + (-7) + (-10)
Question 14 (1 point)
What shows the proper factoring of this expression?
4d + 24
a
4(d + 6)
b
2(d + 12)
c
4d(4 + 6)
d
6(d + 4)
Question 15 (1 point)
What is the proper factoring for this expression?
50 + 25x + 75y
a
75(x + y)
b
25(2 + x + 3y)
c
25(2 + 2x + 3y)
d
25(x + 3y)
Question 16 (0 points)
How confident do you feel about your ability to master this material by January 19?
(Don't worry--by the time we get to the first quiz, you will have had many chances to practice the ideas from this pre-test.)
a
Very confident
b
Pretty confident
c
A little confident
d
Not very confident
Answer:
7. 3r+(-3r)=0
8. 2j + (-9j) =-7j
9. 12 + 4b - 3 + 2c = 4b+2c+9
10. 7y + 8 - 2y + 4 = 5y+12
11. 2a + 3b - 3a + 4c - b = -a+2b+4c
12. i cant see the triangle
13. a 2(x - 5) + (-7) and c 2x - 12
14. a 4(d+6
15. b 25(2 + x + 3y)
Step-by-step explanation:
HELP !!!!!!!!!!!!!! giving brainliest!!!!!!!!!!!!!!
Answer:
It’s the second one
Step-by-step explanation:
I hope this helps
Answer:
B 2
Step-by-step explanation:
PLEASE HELP ASAP!!!!
Answer:
1. [tex]\frac{46}{7}[/tex]
2. 6.6
3.6.8
4.[tex]\sqrt{47}[/tex]
Step-by-step explanation:
PLS HELP easy math PLEEEEEEEEEEEEEEEEEAASSSSSSSSSSSSEEEEEEEEEEEE
Answer:
A is 23x+2=94
B is 4
C is 20.5 by 26.5
Step-by-step explanation:
To solve get the equation, you have to combine the two equations, which gets you 5.5x -1.5 + 6x +2.5
Then you combine like-terms, which is 5.5x+6x and -1.5 +2.5 and that equals 11.5x + 1 and then multiply that by 2 {2(11.5x +1) } and you should get
23x+2 and then put the 94 at the end (23x + 2 = 94). Then just solve the equation and you get the rest of the answers.
answer plz it a maath question
Answer:
28x +8y +2
Step-by-step explanation:
-2( 3x+12y-5-17x-16y+4)
Combine like terms
-2( -14x-4y-1)
Distribute
28x +8y +2
A rectangular prism is shown below. What is the lateral surface area?
Answer:
the answer is 110 because 5 times 2 equals 10 and 10 times 11 is 110
Answer:
2(11)(5)+2(11)(2)+2(2)(5)=110+44+20=174
174 Square Centimetres
PLEASE HELP MEEEE!!!
What is 600cu cm if that volume is scaled down by 1/10
Answer:
60cm
Step-by-step explanation:
what is the distance between these numbers TOGETHER
Answer:
1 photo = 6 units
2 photo = 5 units
3 photo = 2 units
4 photo = 3 units
Step-by-step explanation:
It's Ez
(2) Clare said that 4/3:5/2 is 10/3. She reasoned: 4/3.5=20/3 and 20/3:2=10/3.
Explain why Clare's answer and reasoning are incorrect. Find the correct
quotient!
Answer:
The answer is 8/15
Step-by-step explanation:
4/3 divided by 5/2 is the same as 4/3 times 2/5
4/3 times 2/5= 8/15
8/15 is the answer
She is wrong because if you want to do it you have to multiply the fraction with 5 and then MULTIPLY it by 2 not divide it by 2.
Hope this helps :)
-ilovejiminssi♡
please help i dont know how to do this!! will give brainleist if you show work
Enter the value of p so the expression 5/6 - 1/3n is equivalent to p(5-2n)
Answer:
I guess it's 1/6
Step-by-step explanation:
make it braintliest please
Me and my friend really don't understand this. If anyone can help within 5 minutes, it'd help a lot.
Thanks :)
Answer:
the ratio is 18:81
Step-by-step explanation:
Okay so when a question is asking for a ratio it is basically asking a number compared to another:
So if you had 14 green frosted cupcakes and 8 blue frosted cupcakes what is the ratio of total frosted cupcakes to blue cupcakes:
the answer would be 22:8
Because you are trying to compare the total number of cupcakes to the blue cupcakes.
So back to your equation it wants to know the ratio between empty spots and the total number of parking spaces
Since we know that 63 of the spots have cars and 18 spots are empty we are going to add 63 and 18 together to get the total amount of parking spaces:
18 + 63 = 81
And since they want to know the empty spots compared to the total number of parking spaces we are going to be putting 18:81.
Hope this helped you!!!
Answer:
18:81
Step-by-step explanation:
Write an equation that represents the relationship in the recipe above, using s for cups of soda water and p for cups of pineapple juice. *
this is for the soda one
Answer:
3/4
Step-by-step explanation:
rewrite [tex]-2x+3y=-15[/tex] in slope-intercept form
Answer: [tex]Y = \frac{2}{3} x - 5[/tex]
Step-by-step explanation:
Answer: y=7.5+-5
Step-by-step explanation:
Divide 3y from itself and -15 to cancel out the Y variable. So Y is equal to -5. Then you would be left with -2x=-15. So then you would have to divide -2x from itself and -15, which would give you 7.5, and that is your x variable.
Diego’s history teacher writes a test for the class with 26 questions. The test is worth 123 points and has two types of questions: multiple choice worth 3 points each, and essays worth 8 points each.
How many essay questions are on the test? Explain your reasoning.
please help!!!! im stuck on this oneeeeeeeeeeeeee and also explain
Answer: B. 3n + 9
Step-by-step explanation:
there are 3 with an unknown value so it is 3n and there are 9 pieces that are each equal to 1 witch makes it 3n+9. hope this helps have a good day
Bob sets the price of the plants according to their height in inches. A plant that is 9.5 inches high costs $2.28 in his store.What is the price per inch of a plant? 0.24
What is the price of a plant that is 5.5 inches high? Show your calculation.
Answer:
1.32
Step-by-step explanation:
.24×5.5=1.32
Answer:
0.24 and 1.32
Step-by-step explanation
I'm pretty sure :)
100 points, (1-7, I need help with all of them please, you can explain stuff too)
1. "The number of years from the start of the Great Depression to the first presidential election of Richard Nixon is six years less than three times Raul's age. Nixon's first presidential election happened 39 years after the Great Depression. Using the given information, write an equation to find Raul's age, r."
2. "Rewrite the equation from part A by factoring the side that contains the variable r."
3. "Solve the two previous equations for r. What value does each equation give for Raul's age. Are the two values the same?"
4. "Raul's grandfather is Miguel, and Raul's sister is Paula. Raul's age is the same as his grandfather's age minus 60 times the age of his sister. Miguel is 65 years old. Using the results from question 2, write an equation to find Paula's age, p, in years."
5. "Rewrite the equation from question 4 by factoring the side that contains the varible p."
6. "Solve the equation for p to find Paula's age. Express her age in years as a fraction."
7. "How many months old is Paula?"
Answer:
Answer:
Raul's age is 15 years.
Step-by-step explanation:
r represents Raul's age.
The number of years from the start of the Great Depression to the first presidential election of Richard Nixon is six years less than three times Raul's age.
The first presidential election happened 39 years after the Great Depression and six years less than three times Raul's age is 3r - 6.
Therefore, 3r - 6 = 39
Add 6 to both sides.
3r = 45
Divide both sides by 3.
r = 15
Hence, Raul's age is 15 years.
A bag of Jolly Ranchers contains:
2 red
1 blue
4 pink
3 green
5 purple
Ms. McCorkle will select 2 Jolly Ranchers, without replacement. What is the probability that she will select a purple, then a green? Your answer should be a simplified fraction.
Plz help quickly i need this by today at 9 pm or I'm grounded. brainliest i will give it to the first person with correct answers. I NEED ALL ANSWERS AND PLZ DONT ANSWER FOR THE POINTS I WILL REPORT YOU. fyi, the functions in the second picture go with the graphs you just need to tell me which functions goes with which graph. plz i already lost 32 points and read the instructions on the pictures.
Answer:
99% sure its D
Step-by-step explanation:
Answer:
i think its D
Step-by-step explanation: