Answers
Answer:
y = 18
Step-by-step explanation:
Direct variation means y will change by the same factor x does. When x changes by a factor of 15/10 = 1.5, the value of y will change by that same factor
x = 10, y = 12
x= 15, y = 1.5×12 = 18
The new value of y is y = 18.
_____
Written as a proportion, you have ...
y/15 = 12/10
y = 15×12/10 = 18
__
Written as a direct variation equation, you have ...
y = kx
12 = k·10 ⇒ k = 1.2
y = 1.2·15 = 18 . . . . for x=15
Related Questions
7x – 5 – 3x = 7 – 6x solve for x
Answers
Step-by-step explanation:
7x - 3x=5 + 7
we will plus --
10x =12
x=12÷10 or 10 /12
x=12.2
solve for x -22=-7+3/5x
Answers
Answer x= 75/2
Explanation:
X-22=-7+3/5x multiply both sides of the equation my 5
5x-110= -35+3x
Move the variable to the left-hand side and change its sign
5x-110-3x= -35
Move the constant to the right-hand side and change its sign
5x-3x= -35+110
Collect like terms
2x= -35+110
Calculate the sum
2x=75
Divide both sides of the equation by 2
x=75/2
Answer x=75/2
find the value of 777^2 - 223^2
Answers
Answer:
549440
Step-by-step explanation:
777^2 = 603729
223^2 = 54289
603729 - 54289 = 549440
3(2/3p+3-1/3p-5) What is the simplified version of this equation.
Answers
Answer: p+1
Step-by-step explanation:
3(2/3p+3-1/3p)
=3(1/3p+3)
=p+1
What is the range of the function y = x^2?
Ox>0
O all real numbers
Oy>0
Answers
Answer:
The range is y≥0
Step-by-step explanation:
The shape of this graph is a parabola
You may see this by using the Desmos calculator and typing y=x^2 if you would like to visualize.
(a) The function y = x^2 simply takes whatever number you feed it (x) and outputs x squared.
For example
y = (2)^2=4
y = (3)^2 = 9
(b) To graph x^2 simply make a table of values and plug in 0 -> however high you would like to go ( usually to 5 or so is fine but you could go to infinity).
Example
y = x^2
Y | X
________
2 | 4
3 | 9
4 | 16
In this case the function's range is y≥0 because all y values will be greater than or equal to 0.
If you are wanting to learn how to specifically graph this you can look up (Graphing y = x²) if my quick graphing explanation back at mark (b) does not help.
Estimate the area please. will give brainliest.
Answers
Answer:63
Step-by-step explanation:
check attachment for question
Answers
Answer:
[tex]\displaystyle 3x^2 + x[/tex]
Explanation:
All you are doing is combining like-terms:
[tex]\displaystyle \boxed{3x^2 + x} \Rightarrow [5x + x^2 - 1] + [2x^2 - 4x + 1][/tex]
I am joyous to assist you at any time.
There are visitors at home. Michelle made 10 and 3/5 cups of tea while Leslie made 9 and 2/5 cups of tea. How many cups of tea did the two sisters make for the visitors? *
Answers
Answer:
20 cups
Step-by-step explanation:
Michelle: 10 3/5 cups made
Leslie: 9 2/5 cups made
Steps:
First, let's turn each number into decimal form.
10 3/5 = 10.6
9 2/5 = 9.4
Then, add
9.4 + 10.6 = 20
Conclusion
They made 20 cups in all
Note:
Hope this helped :)
Have a nice day
Reply with any questions or concerns please :D
if f(x)=2x^2-1, then f(-3)=
Answers
Answer:
f(-3) =17
Step-by-step explanation:
f(x)=2x^2-1
Let x = -3
f(-3)=2(-3)^2-1
= 2(9) -1
= 18-1
17
Ernie played 35 soccer games this season. He won 28 games. Enter the
percentage of games Ernie won.
Answers
= 0.8
Then multiply the decimal with 100
0.8 x 100
= 80
There fore the answer is 80%
Hope this helps!
Brainliest is much appreciated!
Answer:
I think it;s 9.8
Step-by-step explanation:
You divide 35 and 28 i think
a coin is tossed 4 times. what is the probability of getting heads each time
Answers
answer: 1/16
If you flip a coin 4 times, the probability of getting all heads is 1/16.
Solve four ninths minus four tenths equals blank.
Answers
Answer:
2/45
Step-by-step explanation:
25)
Find the measure of each lettered angle.
The diagram is not drawn to scale.
Answers
Answer:
The Diagram is not showing
Step-by-step explanation:
1. Name a midsegment in the triangle.
Answers
Answer:
EF
Step-by-step explanation:
Hope this helps!
Cherie has 4 gift cards. Each gift card is worth $10. If she spends $23, how much will she have left?
Answers
Answer: She'll have $17 left.
Step-by-step explanation:
4 * 10 = 40
40 - 17 = 23
Hope this helps!
Bret buys a dining table that costs $150 before tax. The sales tax is 8%. How much sales tax did he pay?
Answers
Answer:
$12
Step-by-step explanation:
to find sales tax you multiply the cost by the percentage
you do 150 * 8%
thats also 150 * 0.08
150 * 0.08 is 12
so you pay $12 in tax
Bret paid $12 as sales tax.
What is a expression? What is a mathematical equation? What is Equation Modelling? What is denominator?A mathematical expression is made up of terms (constants and variables) separated by mathematical operators. A mathematical equation is used to equate two expressions. Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem. In a fraction say (x/y), [y] is called denominator.
We have Bret buys a dining table that costs $150 before tax. The sales tax is 8%.
Assume that he paid $[x] as sales tax. Then, we can write -
[x] = 8% of 150
[x] = (8/100) x 150
[x] = 12
Therefore, Bret paid $12 as sales tax.
To solve more questions on Equations, Equation Modelling and Expressions visit the link below -
brainly.com/question/14441381
#SPJ2
9. 25 students each paid $6.50 to go to the museum. How much did they all pay together?
Answers
Answer:
They paid 247 dollar.
Step-by-step explanation:
They paid 247 dollar
Answer:
Step-by-step explanation:
1 student paid 6.50
25 students paid x
1/25 = 6.50 / x Cross multiply
x = 25 * 6.50
x = 162.50
The total for all 25 came to 162.50 dollars.
Determine whether each equation represents a proportional relationship.
Y=2.5x
y= x - 4
Answers
Answer:
y=2.5x - Proportional
y= x - 4 - Not Proportional
Step-by-step explanation:
A linear function that is proportional is in the form y =kx (k is the constant of variation) and passes the origin.
The first equation given is in this form (2.5 is the constant) and it passes through the origin. It is proportional.
However, the second one is not proportional is it does not pass the orgin and it's not in y=kx form.
Hope this helps.
34.2 is what percent of 288? Round to the nearest hundredth.
Answers
Answer:
11.87%
Step-by-step explanation:
34.2/288=0.11875
Which is about 0.1187
So 11.87%
Answer:
11.87
Step-by-step explanation:
mental math and just big brain
Which is an equation of the line through the origin and (-5,6)?
A. y=-5/6x
B. y=-6x
C. y=-5x
D. y=- 6/5x
Answers
Answer:
y=-6/5x
Step-by-step explanation:
HELLLLLLLLLLLLLPPPPPPPPPP
Answers
The first option. 100% correct.
[tex]a_n = 3\cdot a_{n-1}\\\\a_1 = 7\\\\a_2 = 3 a_{2-1} =3a_1 = 3(7) =21\\\\a_3 = 3 a_{3-1} =3a_2 = 3(21) = 63 \\\\a_4 = 3 a_{4-1} = 3 a_3 = 3 (63)=189\\\\7,21,63,189,......[/tex]
Hey ya'll I need help on this question
Answers
Answer:
285.2
Step-by-step explanation:
2852.1/10 = 285.21
but rounded to the nearest tenth is 285.2
Answer:
285.2
Step-by-step explanation:
After we divide 2852.1 by 10 we get 285.21. Rounding it to the nearest tenth it would be 285.2.
The history museum charges a $30 fee plus $12 per student for a field trip.
The aquarium charges a $40 fee plus $10 per student. The lines in the graph
represent the cost of each field trip.
For what number of students will the total cost of each field trip be the same,
and what will that cost be?
Field Trip Costs
y = 40 + 10x
Cost ($)
120
140
100
90
80
70
60
50
40
30
20
10
y = 30 + 12x
1 2 3 4 5 6 7 8 9 10 11 12
Number of students
Answers
Answer:
5 students; $90
Step-by-step explanation:
A-P-E-X
Find the equation of the line passing through the point (-1,0) and parallel to the line
y=-1/2x+3/7
A) y= 2x + 2
B) y = -1/2-1/2
C) y = 1/2x+1/2
D) y = - 1/2x+1/2
Answers
Answer:
B) y= -½x -½
Step-by-step explanation:
Slope-intercept form
y= mx +c, where m is the slope and c is the y-intercept.
[tex]y = - \frac{1}{2} x + \frac{3}{7} [/tex]
Slope of given line= -½
Since parallel lines have the same slope, slope of unknown line= -½.
y= -½x +c
To find the value of c, substitute a pair of coordinates into the equation.
When x= -1, y= 0,
[tex]0 = - \frac{1}{2} ( - 1) + c[/tex]
[tex]0 = \frac{1}{2} + c[/tex]
[tex]c = - \frac{1}{2} [/tex]
Thus, the equation of the line is y= -½x -½.
Plzzzzz help meeeee plzzzz I really d answa
Answers
Answer:
c. is correct answer I think
someone please help me! the question is 18.
Answers
Hehhhhhhhhhhhhhheh eh
Answers
Solve (u+2)^2+6=69 , where u is a real number.
Answers
Answer:
5.94 and -9.94
Explanation:
Use complete the square to answer the question and then type the last line into a calculator to get 5.94 and -9.94
8 x 1/2=4 simplified
Answers
Answer:
Step-by-step explanation:
8➗2=4
since 1/2 is divinding
Burt ran the length of the trail in his town’s park. There are 9 parts to the trail, and each part is the same length. Burt ran a total of 1.8 kilometers.
What is the length of each part of the trail?
Answers
Answer:
.2 kilometers
Step-by-step explanation:
Since there are 9 parts to the trail and the total is 1.8 kilometers, just divide the total by how many parts. 1.8 divided by 9 is .2 so the length of each part of the trail is .2 kilometers