Suppose y varies directly with x. If y = 6 when x = 18, find the value of y when
x= 8.
Answer:
y = [tex]\frac{8}{3}[/tex]
Step-by-step explanation:
Given that y varies directly with x then the equation relating them is
y = kx ← k is the constant of variation
To find k use the condition
y = 6 when x = 18 , then
6 = 18k ( divide both sides by 18 )
k = [tex]\frac{6}{18}[/tex] = [tex]\frac{1}{3}[/tex]
y = [tex]\frac{1}{3}[/tex] x ← equation of variation
When x = 8, then
y = [tex]\frac{1}{3}[/tex] × 8 = [tex]\frac{8}{3}[/tex]
the expression 9.78(4.3x + 5.15) simplifies to
Answer: 42.097x+50.4185
Step-by-step explanation:
Eduardo has to make a 10 minute video of his test corrections for his Algebra 2 teacher in order to be eligible to retest. His teacher said he must stay within three minutes of the 10 minute requirement. Write an absolute value inequality that represents video lengths that meet the requirement. No spaces. On your keyboard,
Answer:
7 ≤ v ≤ 13
Step-by-step explanation:
Length of video required must be within 10 minutes
Submitted length of video must be with 3 minutes of the 10 minutes video
To create an absolute value inequality :
Let v = the range of value for which the required video will be :
|v - 10| = ±3
Lower boundary :
|v - 10| = - 3
v = - 3 + 10
v = 7
Upper boundary :
|v - 10| = 3
v = 3 + 10
v = 13
Hence,
7 ≤ v ≤ 13
I DONT UNDERSTAND HELLPPP
Answer:
choice answer choice f
SOMEONE PLZ HELP ME !!! ASAP
Solve this problem.
6x > 60
x>10
All you have to do is divide by 6 on both sides
PLEASE HELP GOTTA GO TO CROSS COUNTRY PRACTICE PLEASE AND THANKS MARK YOU BRAINLIEST
Answer:
1. $13.78
2. 5.3lbs
3. $4.56
4. 30.44lbs
5. $32.07
Step-by-step explanation:
Simple addition and subtraction.
2/3x = 27 please help
What is the value of x, rounded to the nearest tenth?
Answer:
can you put some context?
Step-by-step explanation:
You fill your car with gasoline at a service station for $2.75 per gallon. You pay with a $50 bill.
How much change will you receive if you buy g gallons of gasoline? How much change will you
receive if you buy 14 gallons?
\Mrs. Sing invests $12,876 for her business at an annual interest rate of 7 percent for 3 years. Which number will Mrs. Sing substitute for r in the simple interest formula?
I = p r t
0.007
0.07
0.7
7
Answer:
0.07
Step-by-step explanation:its becuase 7% outta 100% =0.07. so I=Prt
We have to solve for r
r=r/100
7%/100
0.07 per year
Hope this helps mark as brainliest plz
Answer:
0.07
Step-by-step explanation:
give brainlest pls
can you tell who is the fastest animal In the world
Answer:
Cheetah
Step-by-step explanation:
The function T = 25 - sin ( – 4)) +5
+55 gives the average monthly temperature, T, in a city, where m represents the
month. In which month is the average temperature the same as in m = 3?
Om = 5
Om = 7
Om = 9
O. m = 11
Answer:
the third one ithink
Step-by-step explanation:
In a traffic jam, it once took me 2.5 hours to drive 30 miles across Atlanta. What was my speed in miles per hour on this trip?
speed = distance ÷ time = 30 ÷ 2.5 = 12 mph
NEED HELP ASAP PLEASE
Answer:
[See Below]
Step-by-step explanation:
[tex]Hey~There![/tex]
_______________________
➜ First let's turn each number into a decimal:
[tex]14\frac{2}{5}=14.4[/tex] [tex]4\sqrt{13} =14.42220510[/tex]➜ Now we order then from Least to Greatest:
[tex]14.33[/tex], [tex]4\sqrt{13}[/tex], [tex]14\frac{2}{5}[/tex]_______________________
So your answer would be [tex]\bold~B[/tex].
_______________________
[tex]Hope~this~helps~Mate!~\\-Your~Friendly~Answerer,~Shane[/tex] ヅ
I need help with this math task, I don't know if you can do it with a photo or not, but I need the result, thanks!!
Answer:
under 1: 225
under 2: 450
under 3: 765
under 4:1020
Step-by-step explanation:
it multiplies each day
f(x)=2x+1,g(x)=X2-2x-4
will mark brainles if answered quickly
Answer:
A {-3, -2, -1, 0, 1, 2, 3}
Answer:
A
Step-by-step explanation:
Rational numbers are whole numbers
If a person walks 1/3 mile in 15 minutes, how far will that person walk in one hour? (ik im dumb dont need to say it.)
Answer:
1 and 1/3 miles in an hour
Step-by-step explanation:
thats slow, ive walked a mile in ten minutes, lol
The points (5,-2) and (7,r) lie on a line with slope 4. Find the missing coordinate r.
Answer:
A slope of four means that it moves up four and over 1. Since 7-5 is 2, you must half the 1. (7, 2.5)
Which expression is equivalent to 6(2x-8) *
A : 12x+48
B: 12x-8
C: 12x-48
D: 2x-48
Answer:
C.
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
6(2x-8)
6 * 2x = 12x
6 * -8 = -48
12x - 48
IIIlas' car usses 65 L of petrol to travel 728 km, while Hanis car uses 48 L in 552 km
how much petrol would each car use to travel 830 km ?
Answer:
65l-728km
x-830km
65×830/728=53950÷728=74,107
48L-552
x-830
48×830/552=39840/552=72.173
Triangle XYZ is a right triangle with the right angle at vertex Y.
Angle X must be
.
Angle Z must be
.
The sum of angles X and Z must be
90°.
The sum of angles X and Z is 90°.
What is a triangle?It is a two-dimensional figure which has three sides and the sum of the three angles is equal to 180 degrees.
We have,
Triangle XYZ.
∠Y = 90°
Now,
The sum of the three angles must be 180°.
So,
∠X + ∠Y + ∠Z = 180
∠X + ∠Z = 180 - 90
∠X + ∠Z = 90
Thus,
∠X + ∠Z = 90
Learn more about triangles here:
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Determining Angle Relationships in Right Triangles
Acute
Acute
Equal to
Step-by-step explanation:
see picture
8×5 +6-10
What is the answer for this
please someone help ... ( i’ll mark brainiest , hehe :) )
After a baby was born, he began to gain weight at a rate of 1.5 pounds per month. The weight of the baby at birth was 10 pounds. Write an equation for W,W, in terms of t,t, representing weight, in pounds, of the newborn baby tt months after birth. W=? Please answer !!!
Answer:
W = 10 +1.5t
Step-by-step explanation:
10 pounds
addition of 1.5 pounds
Danica is buying a teal Jansport backpack at Kohl's for $45. The backpack is on sale for 15% off. What is the sale price of the backpack?
The backpack price is $38.25
Expand & simplify
(x+2)(x−3)(x+4)
What is the equation of the least-squares regression line for the data set?
A) y=−1.988x+43.293
B)y=−0.879x+43.293
C)y=1.988x−43.293
D)y=−0.879x−43.293
Answer:
The answer is option A y = −1.988x + 43.293
Step-by-step explanation:
I just took the test
The equation of the least squares regression line for the data set will be;
y = -1.988x + 43.293
Option A is true.
What is linear expression?
A linear expression is an algebraic statement where each term is either a constant or a variable raised to the first power.
Given that;
The table of data set is shown in figure.
Now, Let hours represent by x.
And, Tickets sold represent by y.
So, By the equation;
y = -1.988x + 43.293
Substitute x = 11;
y = -1.988 × 11 + 43.293
y = - 21.868 + 43.293
y = 21.62
y = 22
And, For x = 9;
y = -1.988 × 9 + 43.293
y = -17.892 + 43.293
y = 25.4
y = 24
Thus, Equation y = -1.988x + 43.293 shows the least-squares regression line for the data set.
So, The equation of the least squares regression line for the data set will be;
y = -1.988x + 43.293
Learn more about the linear expression visit:
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Given the equation y = -3x + 6, the slope is
Answer:
-3 I think...
Step-by-step explanation:
y=mx+b. where m is the slope, since -3 is the value for m, it is the slope
ALGEBRA NATION!!! NEED HELP :(