Answers
Answer:
https://vietjack.com/giai-toan-lop-9/images/bai-38-trang-62-sgk-toan-9-tap-1-
Step-by-step explanation:
Vẽ đồ thị y = 2x (1):
Cho x= 0 ⇒ y= 0 ta được O (0, 0)
Cho x= 2 ⇒ y = 4 ta được điểm (2; 4)
- Vẽ đồ thị y = 0,5x (2):
Cho x= 0 ⇒ y = 0 ta được O (0; 0)
Cho x = 4 ⇒ y = 2 ta được điểm (4; 2)
- Vẽ đồ thị y = -x + 6 (3):
Cho x = 0 ⇒ y = 6 được điểm (0; 6)
Cho y = 0 ⇒ x = 6 được điểm (6; 0)
Để học tốt Toán 9 | Giải bài tập Toán 9
m is your slope, the number that m is tells you how many times you go up and over (rise over run)
b is your y intercept, this number tells you where your line should pass
a. y = 2x +1
plot a point at 1 for y, then go up 2 over 1 and draw a line
2 also means 2/1 so you go up twice and over once
b. y = -3x -2
plot a point at -2 for y, and then go up 3 and over 1 but since it’s a -3 you go down 3 over 1
the - shows that your line should be facing the left because it’s a negative slope
c. and d. are hard to see so i can’t tell if that is a = sign or a - sign
but if it’s a = sign follow the steps like the other problems if it’s a - sign solve for y so it turns into slope intercept form then follow the steps like the other problems
Related Questions
When this 3-digit number is rounded to the nearest ten, the sum of its digits is 16. The hundreds digit of this number is 8 and the ones digit is 5. What is the number?
Answers
Answer:
835
Step-by-step explanation:
We know that the hundreds is 8 and the ones is 5 so the sum needed is 16-(8+5), which equals 3 :)
Change the following mixed expressions to fractions and then simplify the complex fractions.
Answers
Answer:
[tex]\frac{3(a-7)}{4x(a-4)}[/tex]
Step-by-step explanation:
One is given the following expression:
[tex]\frac{2a^2-9a-35}{12x^3}*\frac{9x^2}{2a^2-3a-20}[/tex]
The most logical first step to solve this equation is to factor it. Rewrite each quadratic equation as the product of two linear equations. Unfortunately, no additional explanation can be provided. To prove that the product of the two linear terms are the factors of the quadratic term, one must distribute and simplify,
[tex]\frac{2a^2-9a-35}{12x^3}*\frac{9x^2}{2a^2-3a-20}[/tex]
[tex]\frac{(2a+5)(a-7)}{12x^3}*\frac{9x^2}{(2a+5)(a-4)}[/tex]
Now simplify this expression, then cancel common terms in the numerator and denominator,
[tex]\frac{(2a+5)(a-7)}{12x^3}*\frac{9x^2}{(2a+5)(a-4)}[/tex]
[tex]\frac{9x^2(2a+5)(a-7)}{12x^3(2a+5)(a-4)}[/tex]
[tex]\frac{3(a-7)}{4x(a-4)}[/tex]
3(9-7)
4x(a=4)
Your class earned $55.00 Saturday afternoon by washing cars to raise money for a class trip. This is 1/3 of the money needed for the trip. What is the total amount needed?
Answers
u have to multiply 55 x 3
The total amount needed is $165 if your class earned $55.00 Saturday afternoon by washing cars to raise money for a class trip.
What is a fraction?Fraction number consists of two parts, one is the top of the fraction number which is called the numerator and the second is the bottom of the fraction number which is called the denominator.
It is given that:
Your class earned $55.00 Saturday afternoon by washing cars to raise money for a class trip. This is 1/3 of the money needed for the trip.
Let x be the total amount needed:
A linear equation in one variable can be framed as follows:
1/3 of x = 55
x/3 = 55
x = 55x3
x = $165
Thus, the total amount needed is $165 if your class earned $55.00 Saturday afternoon by washing cars to raise money for a class trip.
Learn more about the fraction here:
brainly.com/question/1301963
#SPJ2
find the exact coordinates of X on segment JK that is 1/3 the distance from j to k. J (-1,4) K(5,-3)
Answers
Answer:
To find the point that's one-third of the distance from (–4,1) to the other endpoint, (8,7): Replace x1 with –4, x2 with 8, y1 with 1, y2 with 7, and k with 1/3. Subtract the values in the inner parentheses. Do the multiplication and then add the results to get the coordinates
Answer:
To find the point that's one-third of the distance from (–4,1) to the other endpoint, (8,7): Replace x1 with –4, x2 with 8, y1 with 1, y2 with 7, and k with 1/3. Subtract the values in the inner parentheses. Do the multiplication and then add the results to get the coordinatesStep-by-step explanation:
at the mall, myna bought a shirt for 25.36, a hat for 5.09 and a belt for 11.45. how much did she spend altogether?
Answers
Answer:
41.90
Step-by-step explanation:
25.36 + 5.09 + 11.45 = 41.90
Answer:
25.36+5.09+11.45= 41.9
Step-by-step explanation:
A pizza shop charges $7.75 for a large pizza, plus $1.25 for each
additional topping. You order a large pizza with three extra toppings.
How much will the pizza cost? Use the expression 7.75 + 3(1.25).
Answers
7.75 (pizza) + 3.75 (toppings)
2 x -7/4. Please help me ASAP
Answers
I hope this kinda helped
Find the unit rate.
20 pages in 2 days
pages per day
Answers
If you reduce this to a denominator of 1, you’d have 20/2 = 10/1
10 pages/1 day or 10 pages/day.
Answer:
10 pages per day.......
Help me Guess just help please
Answers
Answer:
c
Step-by-step explanation:
f
5 Answers: Choice A, B, C, D, E
Basically, it's everything except choice F.
=========================================================
Explanation:
The number 26 is a whole number since the set of whole numbers is {0,1,2,3,4,...} and it's also an integer as well because the set of integers includes the negative counterparts. That takes care of answer choices A and C.
The number 26 is rational because 26 = 26/1 which is a ratio or fraction of integers. Because it's rational, that means it cannot be irrational. The term "irrational" means "not rational". This means answer choice B is true while choice F is not true.
The number 26 is a natural number. The set of natural numbers is {1,2,3,4,...} which is effectively almost identical to the set of whole numbers, except 0 isn't involved. This is why choice D is another answer.
Lastly, choice E is an answer because 26 is a real number. Assuming you haven't learned about complex numbers yet, every number you encounter is a real number.
---------
So to summarize, the number 26 is...
a whole numbera rational numberan integera natural numbera real numberThe only thing that it's not is irrational (which would contradict it being rational).
Plz help! Im giving alot of points!
Answers
Answer:
I don't know sorry about that
Carlos.920
Rita.980
B. They will have the same amount of money at $680
There are 6 red marbles, 9 blue marbles, and 10 green marbles in a bag.
What is the theoretical probability of randomly drawing a red marble and then a green marble?
PLEZZ ANSWERE QUICKLY!!
10%
9.6%
64%
16%
Answers
Answer:
I think 64%
Step-by-step explanation:
6+9+10 = 25
25x4 = 100
6x4 = 24
10x4 = 40
24+40 = 64
64/100 = 64%
Sry if this is wrong but I think this should be correct
Answer:
c
Step-by-step explanation:
looks right, sorry if I’m wrong!
Can someone help pls
Answers
Hi ;-)
450 : 40 = 11,25
11 full bags
Answer:
11
Step-by-step explanation:
450/40=11.25ib
that is the answer
Please help me please and thank you!
Answers
Answer:
Option A is correct
Step-by-step explanation:
As both the coordinates are negative they will lie in 3rd quadrant.
Verified be my teacher as well.
Option A is right
Explanation I just did this
I WILL MARK AS BRAINLIEST! Simplify
Answers
B. 28
C. 140
D. 26
Help Please!!!!
Is every Rational number a Integers? explain
Answers
Answer:
No Not all Rational numbers Integers because integers are all numbers expect for fractions and decimals, Rational numbers are any numbers that are repeating itself in an unknown such as 1/2 or 3/4 while integers are numbers that doesn't have fractions or decimals.
Step-by-step explanation:
Não todos números não são não
Find the number that makes the ratio equivalent to 11:4.
44:
Answers
Answer:
16
Step-by-step explanation:
11:4
44;x
11x4=44
4x4=16
Answer:
44:16
Step-by-step explanation:
11:4
44:x
44/11=4
4x4=16
11:4
44:16
I WILL MARK AS BRAINLIEST! Find the circumference and the area of each circle
Answers
Answer:
first circle is: 6.28 cm or 6 cm (rounded) circumference. 28.27 not sure the area sorry
second circle is: 43.98ft or 44ft (rounded) circumference. 154.062 sq meters or 154 (rounded) sq meters for the area.
Step-by-step explanation:
can you still mark me brainliest :( good luck buddy
Pls help me with this i will give brainly to first answer!!!!!
Answers
Answer:
13 is it's answer......
.
= 4
= 8
= 1
Step-by-step explanation:
• • = 64
= 4 because when 4 is being multiplied by itself 3 times, it equals 64
Now we know the value of so lets move on to the next question
+ + = 20
4 + + = 20
+ = 16
= 8
+ + = 12
8 + + = 12
+ = 4
= 1
+ + = ??
1 + 8 + 4 = ??
13 = ??
Function Machines
*please show steps if you can*
Answers
Answer:
y=84 , y= -5
Step-by-step explanation:
put -9 in the x value
remove the power and that will be 81
then 81 +3=84
take out the square root of -9 in the other machine
-3-2= -5
Solve x2 = 121. please
Answers
Answer:
x = 60.5
Step-by-step explanation:
121 / 2
Answer:
11 or -11
Step-by-step explanation:
x² = 121
=> x = +√121 or x = -√121
=> x = 11 or x = -11
please help
(-4x^2-5x-1)(4x^2-6x-2)
and don't use online please because the answer is wrong
Answers
Answer:
-16x^4+24x^3+4x^2+30x^2+16x+2
Step-by-step explanation:
math
pleasee helppp 15 pointss pleaseee
Answers
The first triangle with sides 7 and 3.5 be ΔABC
The second triangle with sides 3 and x be ΔCDE
ΔABC ≅ ΔCDE (they are congruent) as:
1) They have a common point C
2) ∠ABC = ∠CDE = 90° (given)
Hence we can say,
AC/CE = BC/CD
= 7/x = 3.5/3
Therefore,
x = (7*3)/3.5
= 21/3.5
= 6
Easyyy
Find the unit rate.
30 newspapers in 2 piles
=
newspapers per pile
Answers
It’s just reducing 30/2 into a fraction with a denominator of 1.
Answer:
15 newspapers
Step-by-step explanation:
30 newspapers spread over 2 piles is 30/2 = 15 newspapers
The question doesn't say spread but in language if it doesn't separate we can say the group word spread as it is most likely to be a group total of 30 spread over 2 piles.
Driving , Patrick made the trip to his grandmother’s house in 4 hours and 30 minutes. A week later, driving
at a constant rate of speed, he returned home in 4 hours and 15 minutes. If Patrick took the same route home, what
was his average rate of speed for his return trip?
A. 50 mph
B. 52 mph
C. 53 mph
D. 54 mph
Answers
Answer:
53 mph
Step-by-step explanation:
hopes this helps :)
The sum of three times a number, x, and 12
Answers
3x+12
I WILL MARK AS BRAINLIEST! Write an equation that represents the points on the table
Answers
Step-by-step explanation:
y = ax +b
2 = 0a+ b => b = 2
4 = -2a + b
4 = -2a +2
2a = 2-4
2a = -2
a = -1
so, y = -x + 2
Find the unit rate.
70 rooms on 5 floors
rooms per floor
Answers
Hi ;-)
70 rooms on 5 floors = 14 rooms per floor
70 : 5 = 14
Answer:
14 rooms per floor
Step-by-step explanation:
70 rooms on 5 floors
70/5=14 rooms per floor
Select all ratios equivalent to 6:5.
Answers
6:5 is the same as 6/5
Which of the fractions are the same as 6/5?
9/15 (from 9;15)
4/1 (from 4:1)
24/20. (from 24:20)
The only one is 24:20.
Answer:
The 3rd one only
Step-by-step explanation:
6:5 x 4 = 24:20
PLEASE HELP PLEASE pls plspls pls pls plspls
Answers
Answer:
7725 sq.feet is the answer
Help me on dis please
Answers
Answer:
3 * 10^-3
Step-by-step explanation:
It is to the negative third power because the decimal needs to move in front of the 3.
Answer:
3x10-³
Step-by-step explanation:
3 time 10 to the negative 3 power