how do you use models to add and subtract fractions that have different denominators?
Answer:
the langth
Step-by-step explanation:
I need help really fast plz
Answer: E: all of these are factors
Step-by-step explanation:
When given a system of equations in slope-intercept form, is graphing or substitution the most efficient method to solve? Explain.
Choose the best answer below.
A.
Substitution is the only method that should be used if the answer involves integer values. If the answer involves values that are not integers, graphing would be more efficient because an exact answer can be obtained. It is easier to read graphs when the point of intersection does not occur at integer values.
B.
Graphing is the only method that would be appropriate to use here because it is not possible to use the substitution method if both equations are in slope-intercept form.
C.
Substitution is the only method that would be appropriate to use here because it is not possible to use the graphing method if both equations are in slope-intercept form.
D.
Graphing and substitution are appropriate to use if the answer involves integer values. If the answer involves values that are not integers, substitution would be more efficient because an exact answer can be obtained. It can be difficult to read graphs if the intersection point does not have integer values so this would be an inefficient method to solve with.
PLEASE HELPPPPP
A system of equations in slope-intercept form can be solved by,
D. Graphing and substitution are appropriate to use if the answer involves integer values. If the answer involves values that are not integers, the substitution would be more efficient because an exact answer can be obtained. It can be difficult to read graphs if the intersection point does not have integer values so this would be an inefficient method to solve with.
What are lines and their slopes?We know lines have various types of equations, the general type is
Ax + By + c = 0, and the equation of a line in slope-intercept form is
y = mx + b.
Where slope = m and b = y-intercept.
the slope is the rate of change of the y-axis with respect to the x-axis and the y-intercept is the (0,b) where the line intersects the y-axis at x = 0.
Given, a system of equations in slope-intercept form y₁ = m₁x₁ + b₁ and
y₂ = m₂x₂ + b₂.
We can use both substitution and graphing depending on the numerical values of the variables.
If the solution involves integer numbers, graphing and substitution are the proper methods to utilize. Substitution would be more effective since an accurate solution may be reached if the solution involves values that are not integers. If the intersection point doesn't have integer values, it can be challenging to understand graphs, so using this approach to solve would be ineffective.
learn more about lines and slopes here :
https://brainly.com/question/3605446
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Find the unit rate:
$1.32 for 12 ounces
plz help
Answer:
$0.11/per ounce
Step-by-step explanation:
x = how much it costs for 1 ounce
1.32/12 = x/1
Cross multiply
12x = 1.32
Divide 12 on both sides
x = 0.11
What is the distance between 32 and -67 on a number line?
The answer is 99
-67-32=-99
distance can't be negative so its 99
Jada is 13 5/6
years old. Sheila is 1 1/3
years older than Jada and Jane is 1 1/4
years older than Sheila. How old is Jane?
Answer:
16 5/12 years old
Step-by-step explanation:
Just add them all together. You need to find the LCD for them to do that.
Hope this helps!
what measurement is equal to 3,000 meters
Answer:
A distance of 3,000 meters is approximately 1.86 miles or 3 kilometers.
Step-by-step explanation:
hope it HELPPS
Answer:
1.86 miles or 3 kilometers.
an angle measure 23 degrees more than the measure of its complementary angle . what is the measure
Answer:
67 degrees or 113 degrees.
Step-by-step explanation:
The other angle is 67 degrees because a complementary angle adds up to 90 degrees. It could also be 113 because that is 23 degrees more than a complementary angle.
(copy nd paste)
Sue and Cathy have $20 left for a cab fare home. The cab fare is $3 per mile plus a $2 fixed charge. What is the maximum number of miles they will be able to travel in the cab?
Answer:
6 miles
Step-by-step explanation:
if u dont mind givin me brainliest im just trying to rank up
This pattern follows the rule divide by 3, then add 7. What are the next two numbers?
294, 105, 42, ________, ________
Question 8 options:
14, 7
21, 14
38, 34
49, 56
Answer:
21, 14
Step-by-step explanation:
by dividing 3 from 42 you get 14, and by adding 7 you get 21. And finally by devifing 3 from 21 you get 7 and by adding 7 to 7 you get 14.
Factor by grouping: x^3+2x^2−6x−12. Which of the following is one of the factors?
A) (x^2−6x)
B) (x^2−6)
C) (x^2+2)
D) (x−2)
x³+2x²-6x-12=x²•(x+2)-6(x+2)=(x+2)•(x²-6)
How do you finish this math equation?
3≤7+g
g≥ ?
Answer:-4
Step-by-step explanation:
Answer:
3 ≤ 7 + g
7 + g ≥ 3
g ≥ 3 - 7
g ≥ -4
what is 21 divided by 3 + (8 -2 +2)
Answer:
15
Step-by-step explanation:
21/3+(8-2+2)
PEMDAS
In the parentheses, we can easily learn that the minus two plus two cancels each other out.
21/3+8
7+8
15
If anything is confusing, let me know and I'll explain it more.
what is thissssssss????? pls help
5z + 2 = 3z - 10
Show your work and I will give you brainlist
Answer:
z = -6
Step-by-step explanation:
5z + 2 = 3z - 10
Subtract 3z from both sides
2z + 2 = -10
Subtract 2 from both sides
2z = -12
Divide each side by 2
z = -6
So, the answer is z = -6
I really need help with this, please help
If you bought 12 cookies (each cookie for 0.99) how much more would each cookie cost than if you bought them by the dozen? ( A dozen pack is for 6.55)
7 , 14 , 2
I need LCM for it. Write it in ur notebook and take a pic and send answer
Which equation is a function of x?
x = 5
x = y squared + 9
x squared = y
x squared = y squared + 16
Answer:
x squared = y
Step-by-step explanation:
FunctionsThings can get more complicated, but based on the examples given, for an equation to be a function of x, it must have a single y, where the y is not raised to a power.
Option 1: x=5
This equation doesn't have a y, so it isn't a function of x.
Option 2: x = y squared + 9
This equation has y raised to a power, so it isn't a function of x
Option 3: x squared = y
This equation has a y, and the y isn't raised to a power. This is a function of x.
Option 4: x squared = y squared + 16
This equation has y raised to a power, so it isn't a function of x
Determining functions graphicallyIf the equations are graphed, the graphs must pass a vertical line test (a vertical line drawn anywhere should not intersect the graph more than once).
Option 1: x=5
x=5 represents a vertical line, so it fails the vertical line test (the vertical line would overlap and intersect it infinitely many times).
Option 2: x = y squared + 9
x = y squared + 9 is a sideways parabola. A vertical line will cross it twice in several places
Option 3: x squared = y
x squared = y is a parabola that opens upward. It will pass the vertical line test
Option 4: x squared = y squared + 16
x squared = y squared + 16 is a hyperbola (fancy graph shape) that won't pass the vertical line test.
Mai started a new exercise program. On the second day, she walked 5 minutes more than on the first day. On the third day, she increased her walking time from day 2 by 20% and walked for 42 minutes. Mai drew a diagram to show her progress.
Answer:
d = 30 minutes.
day one is equal to 30 minutes
day two is equal to 35 minutes
day three is equal to 42 minutes
Explanation:
The first step is to figure out how much day 2 was worth in total.
Using the model, we can see that 5 of the boxes from day three is equal to day 2.
42/6=7.
One of the boxes equals 7 minutes.
Next we find what all 5 of them equal.
7*5=35.
Day two was worth 35 minutes in total.
The next step is to figure out what d equals. In order to do that, we need to solve the equation:
d + 5 = 35.
subtract 5 from both sides.
d = 30.
Now we know that day one/D is equal to 30 minutes.
Day one: 30 minutes
Day two: 35 minutes
Day three: 42 minutes.
Hope that this is what your looking for. Have a good day and good luck!
This high school stadium contains a track that surrounds a soccer field. The soccer field is 100 yards long and 70 yards
What is the area of one of the semicircles at either end
The school decided to cover the semicircles with grass to create a space for stretching and other activities. How many square yards of grass will the school need to cover the entire circle
What is the distance around one of the semicircles at either end of the soccer field
What is the distance around the inner lane of the track the lane closest to the soccer field
PLEASE HELP!
asap
Answer:
Given : The high school stadium contains a track that surrounds a soccer field. The soccer field is 100 yards long and 70 yards wide.
The school decided to cover the semicircles with grass to create a space for stretching and other activities.
To Find: area of one of the semicircles at either end of the track
How many square yards of grass will the school need to cover the entire circle?
Solution:
Diameter of semicircle = 70 yards
Radius of semicircle = 70/2 = 35 yards
Area of semicircle at one end = (1/2)πr²
= (1/2)(22/7)35²
= 1,925 sq yards
area of one of the semicircles at either end of the track = 1,925 sq yards
square yards of grass will the school need to cover the entire circle
= 2 x 1,925
= 3850 sq yards
distance around one of the semicircles at either end of the soccer field = πr = (22/7) 35 = 110 yards
distance around the inner lane of the track = 100 + 100 + 110 + 110
= 420 yards
Please Mark as Brainliest
Hope this Helps
Questions are in file/pictures!
(as you can see all my questions are from math lol)
Answer:20
Step-by-step explanation: I'm good at math and i know the answers
Select the correct answer from each drop-down menu.
A sports apparel company surveyed the market about the size of T-shirts people most frequently buy, small, medium, large, or extra-large. The
table shows the survey results.
T-Shirt Size Number of responses
small
11
mediurn
37
large
83
extra-large
19
To help Its sales, the company should focus on producing size
T-shirts. Approximately % of T-shirts the company
makes should be medium and large T-shirts to match the market preference. If the total number of T-shirts sold in a month is 45,000,
of these will likely be size small.
Answer:
To help Its sales, the company should focus on producing Large
T-shirts. Approximately 80% of T-shirts the company
makes should be medium and large T-shirts to match the market preference. If the total number of T-shirts sold in a month is 45,000, 3,300
of these will likely be size small.
Step-by-step explanation:
In the survey, Large t-shirts are most frequently bought so they should be the primary focus if the company is trying to make more money.
To find the percentage of shirts that the medium and large shirts make up, first you find the total amount of shirts (11+37+83+19=150), then you will find how many mediuma and large shirts (37+83=120). Percentage is (120/150)*100=80%
To find the number of small shirts you can set up a proportion.
[tex]\frac{11}{150} =\frac{x}{45,000}[/tex], then cross multiply
150x=11*45,000
150x=495,000
x=3,300
LAST ONE! PLEASE HELP ITS THE FINAL QUESTIONS FOR ME TO FINISH THIS DEATH TRAP
PLEASE HELP WITH THESE !!
ILL TRY TO MARK BRAINLIEST !!
Answer: 1. 32x37.21 =1192
2. 120
3. 12
4. 24
Step-by-step explanation:
Use the Distributive Property to simplify the expression 8(5x−9)
Answer:
Step-by-step explanation:
8(5x - 9)
= 8(5x) - 8(9)
= 40x - 72
Hope it helps :)
PLEASE NEED HELP ASAP
If 120% of a is equal to 80% of b, then what is the value of a+b in terms of a and b?
Answer:
120/100 a = 80/100 b
12/10 a = 8/10 b
10 (12/10) a = 10 (8/10) b
12a= 8b
3a= 2b
a+b in terms of a
b = 3/2×a
a+ 3/2×a = 5/2×a
a+b in terms of b
a = 2/3×b
b + 2/3.b = 5/3×b
Ms. Sacco needs to have her car repaired, but she does not want to spend more than $375 for the repairs. The mechanic says that the part needed for the repair will cost $100 and the labor will cost an additional $40 per hour. Which inequality below represents the greatest number of hours the mechanic can work without exceeding Ms. Sacco’s budget? *
A. 140x ≤ 375
B. 40 + 100x > 225
C. 100 + 40x ≤ 375
D. 100 + 40x > 375
Answer:
I believe it is C
Step-by-step explanation:
Can someone help me with these questions
Answer: you got this try your best
Step-by-step explanation:
Is 3 3/4 in its simplest form?
Please put its simplest form if it has a simplest form
Answer:
that is the simplist form 3 3/34
Step-by-step explanation: