Step-by-step explanation:
These problems are about like terms. Those are terms that are alike (same variables) but the coefficients (numbers in front) can be different.
1. 12m + 24m = 36m
2. 90a - 30a = 60a
Example: 6k + 8k + 10 = 14k + 10 (the part of the expression that's just a number does not combine with the parts that have variables).
3. 29b + 8
4. 36d + 25 (the terms with d in them combine--they don't have to be back-to-back)
5. This is about the Distributive Property; first multiply 14 + 15f both by 3, then look for opportunities to combine like terms.
3(14 + 15f) + 79 = 42 + 45f + 79 = 121 + 45f
6. 20(18 + 5t) - 47 + 28t = 360 + 100t - 47 + 28t
= 313 + 128t
In science class, Farah uses a graduated cylinder with
water in it to measure the volume of some marbles. She
drops in marbles so that they're all under water and
measures the height of the water.
After dropping in 4 marbles, the height is 10 ml
After dropping in 6 marbles, the height is 11 ml.
Here are your answers from the previous screen:
Before dropping in any marbles, the height is 8 ml.
Each marble increases the height by 3 mL.
What should be the height of the water after 13 marbles
are dropped in?
Answer:
47 mL
Step-by-step explanation:
Note each marble increases the height by 3 mL, and we start with 8 mL, so we multiply 3 by 13, and add it to 8
The volume of each marble is 0.5 ml. The volume after dropping 13 marbles is 14.5 ml.
VolumeThe volume of an object is the amount of space occupied by a three dimensional object.
A graduated cylinder can be used to measure the volume of a cylinder. Given that After dropping in 4 marbles, the height is 10 ml and After dropping in 6 marbles, the height is 11 ml.
Hence:
Volume per marble = (11 ml - 10 ml) / (6 - 4) = 0.5 ml
The volume of each marble is 0.5 ml.
If the initial volume is 8 ml, after 13 marbles, height = (8 ml + 0.5 * 13) = 14.5 ml.
Find out more on Volume at: https://brainly.com/question/1972490
What is the lateral area and surface area? If you amswer correctly i will mark it as brainliest
Answer:
Lateral area:
L = πdh = 3.14*12*10 = 376.8 in²Total surface area:
S = L + 2*πd²/4S = 376.8 + 3.14*12²/2 = 602.9 in² (rounded)please answer correctly, will give brainly to best answer, please do explain your answer
Evaluate:
2³ + 4(2 + x) for x = 10
24
26
54
56
Answer: 26
2³ + 4(2 + x) for x = 10
- first do 4(2 + x) which is
8+4x
- Evaluate 2 cubed
You get 2 times 2 times 2.
That would get 8
Our expression is 8 + 8+x
x = 10
Substitute the values.
It is Now eight plus 8 plus ten
So when you Calculate eight plus 8 plus 10
You will get 26
Answer:
D. 56Step-by-step explanation:
2³ + 4(2 + x),When x = 10, the value of the given expression is:
8 + 4(2 + 10) = 8 + 4*12 = 8 + 48 = 56Correct choice is D
The height in feet,h , of a model rocket t seconds after launch is given by the equation h(t) = 3+70t-16t^2.
Answer:
speed of the rocket is 6feet
Step-by-step explanation:
Complete question
The height in feet, h, of a model rocket t seconds after launch is given by the equation h(t) = 3+70t - 16t^2. The average rate of change in h(t) between t = 1 second and t = 3 second is 6. What does the average rate of change tell you about the rocket?
Note that the average rate is also known as the speed
Average rate = h(3)-h(1)/3 - 1
h(3) = 3+70(3) - 16(3)^2
h(3) = 3 + 210 - 144
h(3) = 69
h(1) = 3+70(1) - 16(11)^2
h(1) = 3 + 70 - 16
h(1) = 73 -16
h(1) = 57
Average rate = 69-57/3-1
Average rate = 12/2
Average rate = 6ft/s
This shows that the speed of the rocket is 6feet
Answer:
If you're looking for the answer for edge, its;
B. The rocket is at a greater height when t = 3 than when t = 1.
Step-by-step explanation:
edg- answers ;p
0.1 divided by 7 pls answer I need this by tomorrow
Answer:
0.014286
Step-by-step explanation:
PLSS HELP IMMEDIATELY!!!! ILL MARK BRAINIEST IF U DONT LEAVE A LINK OR GUESS!!!
The tallest is 2 7/8
The shortest is 1 3/4
Difference = 2 7/8 - 1 3/4 = 1 1/8
Fast!!!!
I’ll give brainiest
Answer:
A) Collinear
Step-by-step explanation:
Points that are on the same line are called collinear points. A line is defined by two points and is written as shown below with an arrowhead. Two lines that meet in a point are called intersecting lines.
The length of a rectangle is 7 cm longer than its width.
The area of the rectangle is 120 cm².
What is the width of the rectangle?
Enter your answer in the box.
Answer:
the width is 8cm
Step-by-step explanation:
8x15=120
8(width)+7cm=15(length)
brainliest pls
A highschool science teacher has 78 students. Of those students, 35 are in the band and 32 are on a sports team. There are 16 students who are not in the band or on a sports team. One student from the 78 students will be selected at random. Let even B represent the event of selecting a student in the band, and let event s represent the event of selecting a student on a sports team
Answer: s sports team because what i was thinking is that the band has a lot of kids so there for there gonna put that kid on the sports team or if the kid likes sports or if the kid likes band.
Step-by-step explanation:
Solve this equation 4n+3= 4n-2 by graphing
Answer:
no solution
Step-by-step explanation:
Graph each side of the equation. The solution is the x-value of the point of intersection.
A rectangle is 64cm long 40cm wide find is area and perimeter
Answer:
Area= 2560 Perimeter= 208
Step-by-step explanation:
Answer:
64 x 40 = 2,560 <------- your area because multiply the two given lengths.
64 + 64 + 40 + 40 = 208 <---------- your perimeter since opposite sides are parallel which means 2 sides are different. So two of both of the different lengths will be your perimeter.
Step-by-step explanation:
what is the slope of (-2,8) and (9,6) ?
A cell phone company data about students texting skills.They collected the texting speed in words per minutes according to time in minutes.Identify the data's independent and dependent values
Answer:
independent variable = Time
Dependent variable = texting speed
Step-by-step explanation:
The Independent and dependent variables are used in regression analysis for making prediction. The Independent variable also called the predictor are the variables or data collected in other to influence or determine the outpjt obtained which is the dependent or predicted variable. Hence, the aim or prediction we wish to obtain, measure or determine is the dependent variable In the scenario above, the aim of the data collected is to determine the typing skill, here, the dependent variable is the typing skill. The data required to define the bthis is the data collected on typing speed which measures time taken to type.
Therefore, independent variable = Time
Dependent variable = texting speed
what are the values of x and y
Answer: Step-by-step explanation:
35+y+y=180
2y=180-35=145
y=72.5°=72°30'
y+y+x=180
145+x=180
x=35°
Answer:
X is 35
y is 72.5 I think
sorry if wrong
Step-by-step explanation:
Alan drinks 0.55L of milk every day. How much milk does he drink in 5 days?
Write your answer in milliliters.
Answer:2750 milliliters
Step-by-step explanation:
because 0.55Lx5=2.75L.and if we put it into milliliters it would be 2750 milliliters
A cylinder with a radius of 4 cm and a height of 9 cm has the same volume as a cone with a radius of 3 cm. What is the height of the cone?
Answer:
D. 48 cm
Step-by-step explanation:
Cylinder Volume:
V=πr^2h
V≈452.39
Cone Volume:
V=πr^2(h/3)
452.39 = pi(3)^2(h/3)
452.39 = pi x 9 x (h/3)
452.39 = 28.26 x (h/3)
/28.26 /28.26
16.008138712 = (h/3)
x 3 x 3
h = 48.0244161359
h = 48 cm
Please answer correctly
A cylindrical pipe is 25 ft long and has a volume of 900ft3 find it's approximate diameter to the nearest hundredth of a foot
Answer:
Diameter of the pipe ≈ 6.77 ft
Step-by-step explanation:
Volume of a cylinder = πr²h
Here, r = Radius of the cylindrical pipe
h = Length of the pipe
Volume of the pipe = 900 ft³
Length of the pipe = 25 ft
By substituting the given values in the formula,
900 = π(r)²(25)
r² = [tex]\frac{900}{25\pi}[/tex]
r = √11.459
r = 3.385
Diameter = 2(radius)
= 2(3.385)
= 6.77 ft
The diameter of the cylinderi is 6.77ft
Volume of a cylinderthe formula for calculating thevolume of a cylinder is given as
V = pi d²/4 × h
Given the following
V = 900ft³
h = 25ft
Substitute the given parameters
900 = 3.14 × d²/4 × 25
900 = 19.625d²
d² = 45.859
d = 6.77ft
Hence the diameter of the cylinderi is 6.77ft
learn more on cylinder here: https://brainly.com/question/23935577
Help me with the question also explain the work. If you can send a picture of what you did that would be also helpful. thx ;)
answer: x = -7/4
12 = -4x +5
Subtract 5 from both sides.
7 = -4x
Divide both sides by -4.
-7/4 = x
Flip if you want.
x = -7/4
:)
Answer:
-43
Step-by-step explanation:
Pythagorean theorem level 2 delta math
The third side is [tex]\sqrt{42}[/tex]
So Pythagorean's theorem is the following
[tex]Short^2 + Long^2 = Hypotenuse^2[/tex]
From here we can input the following information that we know
[tex]Short^2 + 4\sqrt{3}^2 = 8^2\\Short^2 + 12 = 64\\Short^2 = 64 - 12\\Short^2 = 42\\Short = \sqrt{42}\\[/tex]
There are 22,521 more people living in the suburbs of a city than in the city. If 17,245 people live in the city, how many people live in the suburbs?
Answer:
Number of people in the suburbs= 39,766
Step-by-step explanation:
Giving the following information:
22,521 more people are living in the suburbs of a city than in the city.
Number of people in the city= 17,245
To calculate the number of people that lives in the suburbs, we need to use the following formula:
Number of people in the suburbs= Number of people in the city + 22,521
Number of people in the suburbs= 17,245 + 22,521
Number of people in the suburbs= 39,766
7 Simplify the expressionby
combining like terms
3g+ 21439 +40 +41 =
[tex]\huge\text{Hey there!}[/tex]
[tex]\large\textsf{3g + 21,439 + 40 + 41}[/tex]
[tex]\large\text{COMBINE the LIKE TERMS}[/tex]
[tex]\large\textsf{(21,439 + 40 + 41) + (3g) }[/tex]
[tex]\large\textsf{21,439 + 40 + 41}\\\large\textsf{21,439 + 40 = \bf 21, 479}\\\large\textsf{21,479 + 41}\\\large\textsf{= \bf 21,520}[/tex]
[tex]\large\textsf{3g = \bf 3g}[/tex]
[tex]\large\textsf{= \bf 3g + 21, 520}[/tex]
[tex]\boxed{\boxed{\large\textsf{Answer: \huge \bf 3g + 21,520}}}\huge\checkmark[/tex]
[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]
HELP ME WITH THIS PLZ I DON'T UNDERSTEND IT PLZ HELP PPLLLZZZZZZ PLZ PLZ PLLZ HELP ME PLZ I NEED HELP PLZ HELP MMMEEEEE
Which question is statistical?
A.)What number of feet is equivalent to three miles?
B.)How many miles did your family drive last week?
C.)How many miles are between the library and the post office?
D.)How many miles does each member of the biking club ride each week?
Each day that a library book is kept past its due date, a $0.30 fee is charged at midnight. Which ordered pair is
viable solution if x represents the number of days that a library book is late and y represents the total fee?
help please ill give branliest for best answer
Answer:
x=31
y=64
Step-by-step explanation:
the angle with the double mark is 85° so the angle on the same line which is marked (x) is 31°
since sum of angles in a triangle is 180° , therefore, y= 180-85-31 which is 64°
xsquare multiply by 6x =0
Answer:
x = 0
Step-by-step explanation:
take the root of both sides and solve
I hope this helps :)
In a right triangle, the base is 12 m and the hypotenuse is 15 m. What is the length of height?
A. 81m
B. 9 m
C. 12 m
D. 19.2 m
HELP NOW PLEASE
Answer:
L = Hyp²-B²
L=15²-12²
L =225 - 144 = 81
L= √81=9
L= 9mThe given point (-3, -9) is reflected over X-axis
Answer:
The correct answer is (3, 9)
Step-by-step explanation:
The rule for reflecting over the X-axis is to negate the value of the y-coordinate of each point, but leave the x-value the same. For example, when point P with coordinates (5,4) is reflecting across the X-axis and mapped onto point P', the coordinates of P' are (5,-4).
A car that is purchased got 24000 is expected to depreciate at a rate of 7% per year. If the function f(x)=ab^x models this situation, which function could be used to find the value of the car after 10 years?
Answer:
FV= 24,000*(1.07^-10)
Step-by-step explanation:
Giving the following information:
Present Value (PV)= $24,000
Decrease rate (d)= 7%
Number of periods (n)= 10 years
To calculate the value of the car after 10 years, we need to use the following formula:
FV= PV*(1+d)^-n
FV= 24,000*(1.07^-10)
FV= $12,200.38
I HELP NEED ASAP PLZ HELP ME
Answer:
Step-by-step explanation:
you would do 60 divided by 5 which would get you 12
then you multiply 12 by 3 which would be 36
lastly you would multiply 36 by 7 which would get you
252
Answer:
so first you take 7 and you multiply by 60 bc that way you will have the minutes 60x7=420 then you divide 420 by 5 and get 84 then 84x3=252
Step-by-step explanation: