Answer:
12
Step-by-step explanation
( 15n2 - 5n + 45 ) ÷ 5
I'm assuming we need to simplify this expression. (Tip when you are writing n squared, please write n^2, not n2.)
Since we can see that there is a 5 in each term inside the ( ), we simplify have to remove that if the whole thing is going to be divided by 5.
Answer:
(15n^2-5n+45)/5
=3n^2-n+9
Answer:
3n^2-n+9
Step-by-step explanation:
You would want to divide the 5 between each of the terms. 15n^2 ÷ 5 is 3n^2. 15 ÷ 5 is 3. The n^2 stays, so 3n^2. -5 ÷ 5 is -1. We don't have to worry about writing the -1. Rather, just write the -n, it is the same as writing -1n. Lastly, 45 ÷ 5 is 9. You have to put the terms together in standard form. Standard form is just writing the numbers from greatest power to least power. The 3n^2 would come first since 2 is the greatest power. Next would be the -n, and lastly the 9. The 9 is the constant, which always comes last. A constant would be a number without a variable after it, like 2x is not a constant but just 2 is. Therefore, the answer is 3n^2-n+9.
The world record for running the marathon is about 26 miles in 130 minutes. How long would a runner at that speed take to run 9 miles?
Please help!!!!!!!!!!!!
i need help ples!!!!!!!!!!!!!!!!!!!!!!!!!!!
Help please help please
Answer: 20x
expalnation: Not sure about the second one but the first problem is a trick problem your finding the mean. but it already brought the equation down to 1 so 20 is the answer
Consider two consecutive odd positive integers. If their product is 23 more than their sum, what
are the two integers?
Answer:
Find two consecutive odd integers whose product is 23 more than their sum. Let x & x+2 be the 2 integers.
Step-by-step explanation:
The value of two consecutive odd positive integers are 5 and 6.
What are Integers?
A whole that can be positive , negative and zero is called integers.
Given that;
The product of two integers is 23 more that their sum.
Let two consecutive odd positive integers are x and x + 2.
Now, By the given condition we can formulate;
x (x + 2) = 23 + x + (x + 2)
x² + 2x = 23 + 2x + 2
x² + 2x = 25 + 2x
x² = 25
Take square root;
x = √25
x = ± 5
Since, Numbers are positive.
So, x = 5
And x + 1 = 5 + 1 = 6
Thus, The value of two consecutive odd positive integers are 5 and 6.
Learn more about the integers visit:
https://brainly.com/question/855270
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11) Ron paid x dollars for a pair of jeans. Tim bought the same pair of jeans for
half the price as Ron. If they paid a total of $45 for the 2 pairs, how much did
each spend on their jeans?
PLEASE HELP 20 POINTS!!
Answer:
Ron paid $ 30 for his pair of jeans, while Tim paid $ 15 for the same model of jeans.
Step-by-step explanation:
Given that Ron paid X dollars for a pair of jeans, and Tim bought the same pair of jeans for half the price as Ron, if they paid a total of $ 45 for the 2 pairs, to determine how much did each spend on their jeans you must perform the following calculation:
X + 1 / 2X = 45
1X + 0.5X = 45
1.5X = 45
X = 45 / 1.5
X = 30
So Ron paid $ 30 for his pair of jeans, while Tim paid $ 15 for the same model of jeans.
solve 1/2x-2=9-5x by graphing
Answer:
Step-by-step explanation:
Suppose I have a wooden cube, which I then split into eight equal pieces. If I give you two of those pieces, and then give you three more, what fraction of the original cube do I have left? Express your answer in decimal form.
Answer:
.625
Step-by-step explanation:
Since the amount of pieces are 8, and you gave 5 away, you have to divide 5 by 8. This gives you .625
Answer:
0.375
Step-by-step explanation:
You would have 3/8 of the original cube left. 0.375 in decimal form.
HELPPPP plssssss pls
Answer:
9. representative because she samples a small group of people to gather representative data for a larger group
10. biased because hes asking people their favorite (opinionated word) sport at a sports game. people at that game most likely are there because it is their favorite
11. 9 students
12. median = 11
GIVING OUT BRAINLIST QUICK! NUMBER 6
Answer:
40
Step-by-step explanation:
AREA=LW
L₁W₁=40
L₂W₂=160
x(L₁W₁)=L₂W₂
x(L₁W₁)=L₂W₂
x(40)=160
x=40
Evaluate the expression for m = 2.
-26
Answer:
-13?
Step-by-step explanation:
If m = 2, then.. -26/2 = -13
Answer:
-13
Step-by-step explanation:
I think its -13
The difference in the height of the two rectangles is 7 feet.
One rectangle has a height of 6.2 feet and another has a height of y feet.
What is the value of y?
y =
Answer:
y=13.2
Step-by-step explanation:
Since the difference in height is 7 feet all you need to do is add 7 feet to 6.2 which will equal 13.2
Answer:
13.2
Step-by-step explanation:
Mr.Simon bought 32 feet of rope. He used 7/8 of the rope to secure a tree to a post to prevent it from falling, how many feet did Mr.Simon use?
Answer:
28 feet
Step-by-step explanation:
32 X7/8= 7X4=28 feet
what is the equation of the line that passes through the point (-2,-2) and a slope of 4
Answer:
y = 4x + 6
Step-by-step explanation:
Gradient is already given as 4.
We proceed straight away to solving for the equation
what is the approximate diameter of a sphere with a volume 34 cm the third power?
Answer:
Diameter = 4cm________________Step-by-step explanation:
volume = 34cm³
volume = 4/3×π×radius³
34cm³ = 4/3 × 3.14 × radius³
34cm³ = 12.56/3 × radius³
radius³ = 34×3/12.56
radius³ = 8
radius = ³√8
radius = 2cm
diameter = 2×radius
= 2×2
= 4cm
________________FOLLOW ME PLEASE
Find the perimeter of a rhombus with side of 10 m.
perimeter =
m
Answer:
the perimeter equals 40m
explanation:
P=4a=4 x 10=40m
How do I solve this? Please and thank you!
Interest earned: $40, Principal: $400, Time: 2 years. Find the rate.
Answer:
840
Step-by-step explanation:
40+400×2=840
5 percent per year
400/10=40
40/2=20
400/20=5
5 percent per year
Use the map shown. Each grid on the map represents 1 city block.
Yoko walks from the library to the mall. How many city blocks does she walk?
Yoko walks ___ blocks.
Answer:
it is a reflection
the points are 8 units apart
Hope this helped! Have a nice day! Plz mark as brainliest!!!
-Lil G
Answer:
i thinks it 8 blocks!! sorry if im wrong
Which polynomials are prime? Check all that apply.
15x2 + 10x – 9x + 7
20x2 – 12x + 30x – 18
6x3 + 14x2 – 12x – 28
8x3 + 20x2 + 3x + 12
11x4 + 4x2 – 6x2 – 16
Answer:
A
D
E
Step-by-step explanation:
Do Now:
The formula to find the area of a triangle is kbxh)
If the base, b, of a triangle is 16 and the height, h, of
a triangle is 4, what is the area of the triangle?
3
Having Trouble?
-Connect with
yesterday's lesson
Il
0:02:26
Answer:
Area = 32
Step-by-step explanation:
Remark
The standard area for a Triangle is
Area = 1/2 * b * h
Givens
b = 16
k = 1/2
h = 4
Solution
Area = 1/2 * b * h
Area = 1/2 * 16 * 4
Area = 32
Write an equation of the line with the given slope and y-intercept.
y у
4
(-3, 4)
4
2
(0, 0)
4
-2
х
y =
X +
The first blank is for your m, the last blank is your b(write fractions as = 1/2)
PLEASE ANSWER NOWWWWWWWWW
Answer:
m = -4/3 b = 0
Step-by-step explanation:
Slope formula is [tex]\frac{y_{2} - y_{1}}{x_{2} - x_{1}}[/tex]
[tex]\frac{-4-0=-4}{3-0=3}[/tex]
The slope is -4/3. The line intersects the y-axis at (0 , 0) so b = 0. This can be verified by plugging one of the points into the equation.
At a sale, coats were sold for $11 each. This price was 55% of a coat's original price. How much did a coat originally cost?
Answer:
The coat originally cost $20.
Step-by-step explanation:
The original cost is of x.
At a sale, coats were sold for $11 each. This price was 55% of a coat's original price.
This meas that:
[tex]0.55x = 11[/tex]
How much did a coat originally cost?
This is the solution for x for the equation above. So
[tex]x = \frac{11}{0.55} = 20[/tex]
The coat originally cost $20.
Answer:
20
Step-by-step explanation:
so when setting up you put 11/x=55/100 then cross multiply. then you should get 55x=1,100 .
divide 1,100 by 55 then you should get your answer which is
x=20 :)
Which expressions are equivalent to -3(2+7) A: -6+21 or B:-21+6
Answer:
None
Explanation:
-3(2+7) = -3×9 = -27
-6+21 = 15
-21+6 = -15
Hence there is no equivalence
A company rents bicycles to customers. The company charges an initial fee
plus an hourly rate. This table shows the total cost to rent a bicycle for
different amounts of time.
Hours
Total Cost
2
$8
6
$20
10
$32
What is the initial fee, in dollars that the company charges to rent a bicycle?
Which statement is true?
A. 2(3 + 4) = 2(3) - 2(4)
B. 2(3) + 2(4) = 2(3 + 4)
C. 213 + 4) = 2(3) • 2(4)
Answer:
B is correct.
Find the measurement of angle A.
Answer:
4) a=35°
Step-by-step explanation:
I can't explain its too complicated
A student desk measures 1.5 meters. The dry erase board measures 3.5 meters. How much longer is the dry erase board than the desk in centimeters?
Answer:
2 meters longer
Step-by-step explanation:
you can just do 3.5 - 1.5 = 2 meters
Write the equation in slope-intercept form. y + 5 =- 6(x + 7)
Simplify the expression 8 + d + 4d + 6. *
+
Your answer
__________