Answer:
113.1
Step-by-step explanation:
What is the solution to the system of linear equations below? 2/5x−y=6 −2x+5y=−30 Select one: A. (-13, 14) B. (-5, -8) C. no solution D. infinitely many solutions
Answer:
D. Infinitely many solutions
Step-by-step explanation:
[tex]-\frac{2}{5}x-y=6 | -2x+5y=-30[/tex]
1.Since neither equation contains an isolated. However, we can isolate -y in the first equation by adding [tex]\frac{2}{5}x[/tex] to both sides.
Like this: [tex]\frac{2}{5}x-\frac{2}{5}x-y=6-\frac{2}{5}x[/tex]
ending up with [tex]y=6-\frac{2}{5}x[/tex]
2.Now, we can change y to a positive y. By doing so, we divide -y by the entire equation.
Like this [tex]\frac{-y=6-\frac{2}{5}x }{-y}[/tex]
Ending with [tex]y=-6+\frac{2}{5}x[/tex]
3.Now, we can plug the expression [tex]-6+\frac{2}{5}x[/tex] into the second equation as a substitute for y, and solve for x. Then, we can use x to calculate y.
Like this [tex]-2x+5(-6+\frac{2}{5}x)=-30\\ -2x-30+2x=-30\\[/tex]
4. Since -2x+2x would cancel out and leave -30=-30. This is true because we know -30 equals -30 with no variable in sight.
Four classmates collect data by conducting a poll. They ask students chosen at random how many days a week they buy lunch. • Emma interviews 10 students. • Dylan interviews 35 students. Megan interviews 75 students. • Matt interviews 20 students. Whose results are probably the most trustworthy? A. Dylan's B. Matt's C. Emma's D. Megan's
Answer:
meghan
Step-by-step explanation:
she has the most people interviewed
Pls help need a help ASAP
Answer:
first one is vertical, will you take another picture I cant see the whole line
PLEASE PLEASE PLEASE HELP HELP FAST IM SO FRUSTRATED IM ABOUT TO CRY PLEASE HELP HERE R THE DIRECTIONS! READ THIS FIRST!!!!! Please make sure all answers are turned into MIXED NUMBERS if your answer is an improper fraction.....We ARE NOT doing #11 and #12..
Answer:
5/6 17/18 2 bsjdjenabdje
Answer: 1. 3 19/20
2. 5/6
3. 0
4. 1/2
5. 4 1/10
6. 17/18
7. 3 19/20
8. 7/8
9. 2
10. 10 3/4
Write the equation of the line in slope-intercept form using y=mx+b
Answer:
y= -100 x= 100
Step-by-step explanation: The form y=mx+b means slope m and y-intercept b; similarly, the form y=mx+a means slope m and y-intercept a. The form y=m(x-a) is essentially different from the other two forms, and means slope m and x-intercept (instead of y-intercept) a.
Answer:
-4 -10 and 10 4
Step-by-step explanation:
Which sentence is correct?
A) -4 > 3
B) -4 < -6
C) -4 > -7
D) -5 > -4
Answer:
the same answer as them
i got 100:)
Step-by-step explanation:
y-12=4y solve for y and show work plz
Lisa is filling a large coffee filter that is shaped like a cone. The dimensions of the cone are shown below. What formula is used to find the volume of the cone?(HELP ASAP)
A: 1/3 (4 1/5) (π) (4.9)
B: 1/3 (2 1/10 ) (π) (4.9)
C: 1/3 (2 1/10)^2(π) (4.9)
D: 1/3 (4 1/5)^2 (π) (4.9)
Answer:
option c
Step-by-step explanation:
formula for volume of cone is π r^2 (h/3)
Could you guys do this for me!
Coach Kasongo wants to know how many of his swimmers have times in each of four time ranges. He times each swimmer and records the data so he can compare their speeds. Would a dot plot or a histogram be a more appropriate way to display the data for this situation? A. A dot plot, because Coach Kasongo wants to show how the data fall into different intervals or ranges. B. A histogram, because Coach Kasongo wants to show how the data fall into different intervals or ranges. C. A dot plot, because Coach Kasongo wants to show all of the individual data values D. A histogram, because Coach Kasongo wants to show all of the individual data values.
Answer: D
Step-by-step explanation:
Answer:
B. A histogram, because Coach Kasongo wants to show how the data fall into different intervals or ranges.
Write and solve the equation that represents the sentence below.
The product of 18 and a number is 109.8.
Which statements are correct? Check all that apply.
It can be solved by using the division property of equality.
It can be solved by using the multiplication property of equality.
The equation should be StartFraction x Over 18 EndFraction = 109.8.
The equation should be 18 x = 109.8.
The answer is 6.1.
The answer is 1,976.4.
Answer:
The equation should be 18x = 109.8
The answer is 6.1
Step-by-step explanation:
The word "product" tells you that 8 and x are being multiplied to give 109.8.
If you use that equation to solve for x by dividing 109.8 by 18, you will get 6.1.
Tyler spent a relaxing afternoon watching movies. He watched movies for
2
1
2
hours. His brother watched the movies for
3
4
of the amount of time that Tyler did. What equation can be used to find out how much time Tyler’s brother spent watching movies?
Answer:
try 3 . 4 if it rong I'm sooo sorry
Which expression has the least value when x = 1000?
Answer: Could we see the choices?
Step-by-step explanation:
help me please will give brainliest to correct answer
Answer:
A
Step-by-step explanation:
Pretty sure it is A
Answer:
First One
Step-by-step explanation:
It makes more sense and has a cat-whisker
1.Where is the least change in the amount of money earned?
Answer:
30 or 3 & 4 weeks
Step-by-step explanation:
hey plz, help me I beg you plz answer the 3 images PLZ I WILL GIVE BRAINLIEST AND 10 PLUS PLZ I BEG YOU!!
Answer:
150 and 500 and the last one is around 200
Step-by-step explanation:
Please answer! will mark brainliest!!
Answer:
the expression is 11x7+11x4
Answer:
11x7+11x4
Step-by-step explanation:
To convert Celsius temperatures to Fahrenheit, you can use the expression (C + 32). Tom says that another way to write this expression is C + 32.
What error did Tom make?
A. Tom did not make an error.
B. Tom should have simplified the fraction .
C. Tom did not distribute to both terms in parentheses.
D. Tom should have added inside the parentheses before multiplying.
Answer:
a
Step-by-step explanation:
Which description describes the solutions to this inequality?
5/6 + 2/3 + 1/4 = ???
PLEASEEE HELPPP ILL GIVE BRAINLY ANSWEAR ALL OF THEM!!!!!
EXPERT HELP I'LL GIVE BRAINLIEST: EXPLAIN THE ANSWER PLEASE
Answer: 109 cm^3
Step-by-step explanation:
4 x 7 = 28
28/2 = 14 cm^3
4 x 4 = 16 cm^3
4 x 15 = 60
60/2 = 30 cm^3
4 x 7 = 28 cm^3
7 x 6 = 42
42/2 = 21 cm^3
Add all together = 109 cm^3
Create an equivalent expression that includes a set of parentheses that make the value of the
expression 13. Remember, you can have two or more numbers within the set of parentheses.
1/2 X 12 divided by 2 -2 + 1
Answer:
2
Step-by-step explanation:
Solve for x: x/5 = 75
Answer:
x=15
Step-by-step explanation:
75/5=x 15x5=75
Answer:
15
Step-by-step explanation:
x/5 = 75/5
x = 15
Can someone help me, please??
Answer:
1. 4.5x - 151.89
2. -2x + 375
Step-by-step explanation:
1.
Start with -$126.89
Small deposit: x (add)
Large deposit: 3.5x (add)
Withdrawal: $25 (subtract)
-126.89 + x + 3.5x - 25 =
= -151.89 + 4.5x
= 4.5x - 151.89
Answer: 4.5x - 151.89
2.
Start with $350
Small withdrawal: x (subtract)
Large withdrawal: x + 50 (subtract)
Deposit: $75 (add)
350 - x - (x + 50) + 75 =
= 350 - x - x - 50 + 75
= -2x + 375
Answer: -2x + 375
Evaluate the expression.
4 5 – 1 5 ÷ 2 3
(Write your answer as a fraction or as a whole or mixed number.)
Answer:
44 and 2/5
or
222/5
Step-by-step explanation:
PEMDAS
or Please Excuse My Dear Aunt Sally.
Parentheses
Exponents
Multiplication
Division
Addition
Subtraction
Using this order, we can now solve this.
45 - 15 / 25
15 / 25 = 3/5
45 - 3/5 = 44, 2/5.
Hope this helped! Have a good day/night and good luck!
There are 20 students in a math class who have brown hair. This represents 80 percent of the students in the class. Which equation can be used to find the total number of students in the math class?
Answer:
Step-by-step explanation:
Janine wants to start a new hobby of collecting baseball cards. Her parents bought her a binder in which to hold her baseball cards. Every day, she adds four cards to her binder.
The equation she writes to describe the total number of cards she will have in her binder each day is shown below.
T = 4d
T= total amount of cards in the binder
d = the number of days Janine’s been collecting cards.
Which of the following tables is equivalent to Janine's equation?
Answer:
The answer is d
Step-by-step explanation:
1*4=4
3*4=12
5*4=20
someone plz help me i will give brainliest just
Answer:
5) y = 3x + 1
6) For this question, I would just draw a line that is increasing, and then once it reaches 10 mins I would make a steep line going downward. Something like this: /\
7) Yes, Raoul is correct because Function A's initial value is 0 and function B's initial value is 3.
Answer:
need points
u did that to me and I will do it to u too
The head of a nail is circular, as shown. The head of this nail has a diameter of 6 millimeters.
Which measurement is closest to the area of the head of this nail in square millimeters?
A. 9.42
B. 113.04
C. 28.26
D. 37.68
Answer:
its A
Step-by-step explanation:
Hope it helps