Answer:
3n−32=7n+28
n=-15
Step-by-step explanation:
Let's solve your equation step-by-step.
3n−32=7n+28
Step 1: Subtract 7n from both sides.
3n−32−7n=7n+28−7n
−4n−32=28
Step 2: Add 32 to both sides.
−4n−32+32=28+32
−4n=60
Step 3: Divide both sides by -4.
−4n/−4=60/−4
n=−15
Please help I will mark brainliest
Answer:
D g(x) = (9x)²
Step-by-step explanation:
Which of these systems of equations would be best solved using the subtraction method?
I. 2x−7y+3y = 4 −6x−4y = −52
II. 2y = −5x+6x−5 y = 2x−6
III. −7x+3x+2y = 4 4x−6y = −52
Answer:
Step-by-step explanation:
1. x+2y=6 or x=6-2y
3x-2y=2
3(6-2y)-2y=2
18-6y-2y=2
18-8y=2
-8y=-18+2
-8y=-16
y=-16/-8
y=2 ans.
x+2*2=6
x+4=6
x=6-4=2 ans.
Proof:
3*2-2*2=2
6-4=2
2=2
I leave the rest for you to practice with.
3. 4x+y=7
2x+5y=-1
5. 3x+2y=-2
6x-y=6
Solve the system using the elimination method. Show all your steps.
7. -3x+3y=3
3x+y=9 add.
---------------------------------
4y=12
y=12/4
y=3 ans.
3x+3=9
3x=9-3
3x=6
x=6/3
x=2 ans.
Proof:
-3*2+3*3=3
-6+9=3
3=3
I'll leave the rest for practice.
9. -5x+12y=20
x-2y=-6
11. 3x+2y=1
4x+ 6y= 7
Describe, step-by-step how to find the slope of a line through two points
Step One: Identify two points on the line.
Step Two: Select one to be (x1, y1) and the other to be (x2, y2).
Step Three: Use the slope equation to calculate slope.
The equation used to calculate the slope from two points is: m= y2 - y1 / x2 - x1
Example
Let's say that points (15, 8) and (10, 7) are on a straight line. What is the slope of this line?
Step One: Identify two points on the line.
In this example we are given two points, (15, 8) and (10, 7), on a straight line.
Step Two: Select one to be (x1, y1) and the other to be (x2, y2).
It doesn't matter which we choose, so let's take (15, 8) to be (x2, y2). Let's take the point (10, 7) to be the point (x1, y1).
Step Three: Use the equation to calculate slope.
Once we've completed step 2, we are ready to calculate the slope using the equation for a slope:
One year ago, Clare was 4 feet 6 inches tall. Now, Clare is 4 feet 10 inches tall. By what percentage did Clare's height increase in the last year?
When a number is tripled, the result is 99. Let p represent the number. What is the value of the number?
Answer:
p equals 33 which is the answer to the problem
~~~~~~~~sorry~~~~~~~~
McKenzie purchased tomatoes for $1.24 per pound. McKenzie spent a total of $8.06. How many pounds of tomatoes did McKenzie purchase?
Shirts are on sale for 30% off. The original price of one shirt is $15. What is the total cost, in dollars, of 2 of these shirts at the sale price, including a7% sales tax? Enter your answer in the space provided.
Evaluate the given expression when x = 3.
Enter the number only.
Answer:
50
Step-by-step explanation:
If x=3 then x^3 would be 3 with the exponent of 3. It would look like 3x3x3=27
6x would be 6 times 3 which is 18.
Then you have just an extra 5.
Then add them all together. 27+18+5=50.
Therefore, your answer is 50.
He served the interests of the mid-western states.
Answer:
is this supposed to be a question?
Step-by-step explanation:
Yes. Absolutely. Correct. Outstanding.
On a scale 5 cm is 12 yards. If the length is 30 yards, how many cm is this on the scale?
Answer:
12.5 cm I would believe
Step-by-step explanation:
30 divided by 12 is 2.5, 5 times 2.5 is 12.5
I don’t know the answer pls help I’ll give you brainliest!! 19 points.
Answer:
it is A i think i am a nub tho
Step-by-step explanation:
Answer:
D I think
Step-by-step explanation:
Pam and her sister have a pattern of saving money. Pam saved 40 dollars and her brother saved 100 dollars. Pam says that this means that for every 2 dollars she saves, her brothers saves 5. Is she correct? Show and explain your thinking
pls help me with this math problem.
Answer:
the answer is c
Step-by-step explanation:
HALP PLEASE DO 6 AND 7 PLEASEEE
Answer:
Step-by-step explanation:
6) Convert mixed fraction to improper fraction and then plugin the values in the formula.
[tex]l= 3\frac{1}{3} yard=\frac{10}{3}\\\\w = 1\frac{5}{9} yard=\frac{14}{9}\\\\h =2\frac{1}{4} yard=\frac{9}{4}\\\\Volume of wood shed = l * w *h\\\\= \frac{10}{3}*\frac{14}{9}*\frac{9}{4}\\\\= \frac{5}{3}*\frac{7}{1}*\frac{1}{1}\\\\=\frac{5*7}{3}\\\\=\frac{35}{3}\\\\=11\frac{2}{3} cubic yard[/tex]
b) 10 cubic yard is less than 11 2/3 cubic yard. So, it will fit in the wood shed.
7) Right side rectangular prism:
l = 16 in
w = 5 in
h = 20 - 14 = 6 in
Volume 1 = 16 * 5 * 6 = 480 cubic inches
Left side rectangular prism:
l = 9 in
w = 5 in
h =14 in
Volume 2 = 9 * 5 * 14 = 630 cubic in
Volume of composite solid = 480 + 630 = 1110 cubic inches
The volume of one of the sections of Tank A is 24 cubic feet. The volume of the other section of Tank A is 96 cubic feet. What is the total volume, in cubic feet, of Tank A? {dont solve this, This is to help with part B}
A. 4
b. 72
c. 120
d. 2304
Tank B has the same volume as Tank A. The volume of one section of Tank B is 45 cubic feet. What is the volume, in cubic feet, of the other section of Tank B? Enter your answer in the response box. {solve this}
Answer:
the answer is 141
may it help you
help me pls (brainliest included)
At a football stadium, 20% of the fans in attendance were teenagers. If there were 350 teenagers at the football stadium, what was the total number of people at the stadium?
Answer:
The answer is 1750
Step-by-step explanation:
Because 20% of 1750 is 350
Answer:
1750 is the total number of people at the stadium
can someone help me with these 5 questions
first one.1x + 1x + 8
second one. 4x + 9 + 7x
third one. 15 + 8 - 9x
fourth one. 7x - 8 - 6
last one. -5x + 2 - 8x + 9
Answer: 1. 2x + 8
2. 11x + 9
3. -9x + 23
4. -62
5. -13x + 11
The tree diagram shows the sample space of two-digit numbers that can be created using the digits 9,2 1, and 8. What is the probability of choosing a number from the sample space that contains both 2 and 8?
Answer:
Given : the sample space of two-digit numbers that can be created using the digits 9,7,1, and 8.
To Find : probability of choosing a number from the sample space that contains both 7 and 8.
Solution:
TREE DIAGRAM
9 7 1 8
↓ ↓ ↓ ↓
------------------- ---------------- ----------------- ---------------
↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓ ↓
9 7 1 8 9 7 1 8 9 7 1 8 9 7 1 8
Total Sample space = 16
Contains both 7 and 8
is ( 7 , 8) or ( 8 , 7)
Hence probability of choosing a number from the sample space that contains both 7 and 8. = 2/16
= 1/8
= 12.5 %
Step-by-step explanation: I spent lots of time typing out and working out the answer to your question so please mark Brainliest because no matter what you are always the Brainliest of them all! Have a wonderful day!
Sadly, I don't have many points left so ill have to answer some other questions but anyways, It's Friday! I need help with this please and thank you!
Answer:
1/4 / 9
Step-by-step explanation:
KCF Keep Change Flip
1/4 x 1/9
1/36
only do the highlighted ones please and thank you
Answer:
1. 193.2 in³
4. 628.32 ft³
Step-by-step explanation:
For the rectangular prism, just find the area of each individual side and add. For the cylinder, just do πr²×h, with r being the radius and h being the height.
whats the percentage?
Answer:
blue:2%
pink:40%
orange:25%
white:33
Step-by-step explanation:
The problem we are working is:
If John can paint half of a room in two-thirds of an hour, what part of the room can he paint in a full hour?
Use the table at the right. What part of the room will John paint in one hour?
Answer:
Answer: 0.75(3/4) part of the room
Step-by-step explanation:
Answer:
0.75(3/4) part of the room
Step-by-step explanation:
if he takes 2/3 hours to paint 0.5 room
then he will take 1 hour to paint x
cross multiply we have
x= 0.5/2/3
x=0.5*3/2
x= 1.5/2
x=0.75 part of the room
75/100= 15/20=3/4 part
A function f(x) is shown below.
f(x) = x + x + x
Write an equivalent form of f(x) in function notation that contains only one term on the right side of the equation.
Answer:
f(x) = 3x
Step-by-step explanation:
when adding x (the same variable) to eachother when there is nothing in front, you always assume the coefficient is 1. since there are 3 x's, (1)x+(1)x+(1)x=3x. hope this helps:)
I need help on this math question...
B. In the boys' long jump, Kevin jumped a distance of (6x1) + (9x 1/10) + (8x1/100)+(3x1/1000) meters. Leon jumped a distance of 6.093 meters. Kevin said he jumped farther than Leon. Is Kevin correct? Explain why or why not.
The local business will donate $5.00 for every 10 tickets sold. Let x represent tickets sold, and y represent dollars donated. Student A claims that the equation is y = 2x. Student B claims that the equation is y = 1
2
x. Explain who is correct.
Answer:
If we let x be the number of ticket sold and y be the amount in dollars donated then, the equation would be,
x = 2y
We can check our answer by substituting the given,
10 = 2(5)
10 = 10
The equation can also be written as,
y = (1/2)x
Student B is correct.
Answer:
Sample Response/Explanation: The point that represents what the local business will donate is (10, 5). After testing the point in both equations, you can see that student B wrote the correct equation; 5 = 12(10).
Step-by-step explanation:
In the equation x + y = 8, find the value of x if y = 3
3
5
7
11
Answer:
11
Step-by-step explanation:
x+y=8 y=3
x+3=8
-3 -3
x=11
Answer:
substitute y in the equation
x+3=8
then we solve for x
transpose 3 to the right 8-3=5so therefore x=5
what is the area of this trapezoid?
answer:
i believe the answer is c
good luck :) hopefully this helps
have a great day !!