9)
If y varies directly with x and y = -3 when x = 6, find y when x = 14.
We know if y varies directly with x, we get the equation
y ∝ x
y = kx
k = y/x
where k is called the constant of variation.
we are given y = -3 when x = 6
so substitute y = -3 and x = 6 to determine 'k'
k = y/x
k = -3/6 = -1/2
Now we have to find y when x = 14
so substituting x = 14 and k = -1/2 to find y
y = kx
y = -1/2 × 14 = -7
Therefore, the value of y = -7 when x = 14
10) If y is directly proportional to x and y = 4 when x = 3, find x when y = -12.
we are given y = 4 when x = 3
so substitute y = 4 and x = 3 to determine 'k'
k = y/x
k = 4/3
Now we have to find x when y = -12
so substituting y = -12 and k = 4/3 to find x
y = kx
x = y/k
x = [-12] / [4/3] = [-12×3] / [4]
x = -36/4
x = -9
Therefore, the value of x = -9 when x = 3
11)
If y varies directly with x and y = -6 when x = 2, find the constant of variation.
We are given
y = -6
x = 2
so substitute y = -6 and x = 2 in the equation
k = y/x
k = -6/2
k = -3
Therefore, the value of the constant of variation will be:
k = -3solve by elimination 6x-5y=27 3x+10y=-24
Answer:
point form: (-34/3, -19)
equation form: X= - 34/3, Y = -19
Which ordered pair named the location of Melinda's house?
A. (4, -3)
B. (2,3)
C. (-4, -3)
D. (3, 2)
PLEASE HELP
Answer:
B
Step-by-step explanation:
There are 3 feet in 1 yard.Find the number of feet in a 15 yard run by a football player.
Answer:
45
Step-by-step explanation:
15*3=45
Answer:
45
Step-by-step explanation:
Num. 5 ~p l e a s e ~ h a l p~
What is m in the simultaneous equation
M -n=1
M+n=3
Answer:
m is 2
Step-by-step explanation:
If you add the two equations together you get
2m=4
m=2
Plug this value in for m to solve for n
2-n=1
-n= -1
n=1
b²=-10 + 7b
How do I solve this?
Answer:
B1=2 B2=5
Step-by-step explanation:
Answer:
I think I might be wrong also
Step-by-step explanation:
hope you like my answer
If f(x) = 3x-2, find f(8) - f(5)
Answer:
9
Step-by-step explanation:
f(8)=3(8)-2=22
f(5)=3(5)-2=13
22-13=9
Answer:
f(8) - f(5) = 9
Step-by-step explanation:
So our function is:
f(x) = 3x - 2
Therefore, f(8) becomes:
f(8) = 3(8) - 2 = 24 - 2 = 22
And f(5) is:
f(5) = 3(5) - 2 = 15 - 2 = 13
Finaly, f(8) - f(5) is therefore:
22 - 13 = 9
So f(8) - f(5) = 9
Hope this helps!
PLz help i dont want to fail
Answer:
D
Step-by-step explanation:
Find the measure of the arc or angle indicated. Assume that lines which appear tangent are
tangent.
A) 215°
C) 252°
B) 220°
D) 205°
(-5x + 14y =17
( 9x - 6y = 27
solve by elimination
Answer:
point slope form: (5,3)
equation form: X=5, Y=3
An equilateral triangle has a perimeter of 15x3 + 33x5 feet. What is the length of each side?
x3 feet
5 + 11x2 feet
5x2 + 11 feet
5x3 + 11x5 feet
Answer:
The correct answer is D: 5x3 + 11x5 ft
Step-by-step explanation:
Answer:
The correct answer is D: 5x3 + 11x5 ft
Step-by-step explanation:
Write an equation of the line that passes through the given point and has the given slope. (6, 4); slope -3/4
Answer:
y=-3/4x+17/2
Step-by-step explanation:
the equation for slope intercept form is y=mx+b, where m is the slope and b is the y intercept.
since we know the slope of the line, we can substitute it into the equation
y=-3/4x+b
we need to find b though.
since the equation will pass through the point (6,4) that means that if we plug it into the equation, it'll be a true statement; in this case, we can use it to solve for b.
substitute (6,4) into the equation
4=-3/4(6)+b
multiply
4=-9/2+b
17/2=b
the y intercept is 17/2
therefore the equation of the line is y=-3/4x+17/2
hope this helps :)
HELP FAST PLEASE I'LL MARK YOU BRAINLIEST
Which equation represents the line that is perpendicular to y = 3x + 5 and passes through the point (-3, -4)?
1. y = (2/3)x − 5
2. y = −5x − (1/3)
3. y = (1/3)x − 5
4. y = −(1/3)x − 5
Answer: y = -1/3x -5 (4th option is correct)
Step-by-step explanation:
The slope of a perpendicular line is opposite reciprocal --> -1/3Find b.-4 = -3(-1/3) + b-4 = 1 +b-5 = bill give brainly if right!!
Answer:
The weight of square is 8 grams.
Step-by-step explanation:
Given that,
The weight of the circle = 2 grams
The weight of the triangle = 4 grams
We need to find the weight of the square. Let the weight of each square is w.
On LHS, 2 circles and 4 squares are there.
On RHS, 2 squares, 4 triangles and 2 circles are there.
For a balanced position,
Weight on LHS = Weight on RHS
[tex]2\times \text{weight of circle}+4\times \text{weight of squares}=2\times \text{weight of squares}+4\times \text{weight of triangles }+2\times \text{weight of circle}[/tex]2(2)+4(w) = 2(w) + 4(4) +2(2)
4 + 4w = 2w +16 +4
4w-2w = 20-4
2w = 16
w = 8
So, weight of square is 8 grams.
Find the length of segment FG.
Answer:
54
Step-by-step explanation:since i helped can i have brainlst please that would be greatly apericated
I will give brainliest to the person who solves this
For each graph shown below, select the correct description for slope and y-intercept. In the fourth column, create an equation that can be used to describe the function shown in the graph.
Answer: i dont know
Step-by-step explanation:
Answer:
1.
Slope: Positive
Y-intercept: Positive
y=2x+2
2.
Slope: Positive
Y-intercept: Zero
y=4x
3.
Slope: Positive
Y-intercept: Negative
y=1/2x-5
4.
Slope: Negative
Y-intercept: Positive
y=-1/2x+2
Which graph represents functions ?
Teresa is running the hurdles for the track team. The race times are measured in hundredths of seconds. Teresa’s best time is 19.42 seconds. She needs to run in 18.87 seconds to win the race. If Teresa wins the race, how many seconds better will her new time be? *
a,38.29
b.27.29
c.0.55
d.0.45
ANSWER AND I WILL GIVE BRAINILIEST!!!!!!!!!
Pearl and Destiny went shopping at New Fashion Shop. Everything in the store was at a 30% discount. Pearl found a dress that was originally $65.00. What was the sale price?
Answer:
$45.50
Step-by-step explanation:
Multiply 65 and .30 and you will get how much the dress is off. Then you take 65 and subtract 19.50 and you will get the answer of 45.50
help plz plz plz plz
Answer:
2.8 In is the answer to the question
Step-by-step explanation:
Nw+WD=ND
Chico is saving for new shoes that cost $127. He already has $13 saved, and he will save the same amount each week. Chico wants to buy the shoes in 6 weeks. Chico used the inequality 13+6x ≥ 127 to determine the least amount he would need to save each week. Chico's solution to the inequality was X ≥ 19? I know this is very confusing but help if u can
Answer:
He Has to save $13 every week for six weeks which equals 78,and 78+9 is 87
I’m doing triangles basically finding the sun of the sides
Answer:
funn what funn
Step-by-step explanation:
you soposde to be ban
1800 peoples came for the football match. If this number is correct to the nearest hundred , give the maximum and minimum number of people that could have come.
Answer:
Minimum value = 1750
Maximum value = 1849
Step-by-step explanation:
Given that:
Number of people who came for match = 1800 (to the nearest hundred)
The maximum. And minimum number of people who came are ;
When rounding to tbe nearest hundred , the tens value which is after the the hundred value is either rounded to 0 or 1 depending on whether the the value is below 5 or greater than or equal to 5 respectively.
Hence,
Minimum value = 1750
Maximum value = 1849
I need help on this problem please help thanks.
Answer:
That would be Point R.
Step-by-step explanation:
The absolute value of -1/2 is 1/2
Answer:
That is point R... I'm completely sure...
Hope this helps u... ^_^❤️
© ABCD is a rectangle with sides 6 cm and
8 cm. If its diagonals cross at X, the length
of AX is
Answer:
10
Step-by-step explanation:
If the sides of the rectangle is 6cm and 8cm, then we mean that, the length and breadth are 6cm and 8cm
The diagonal which cross at AX will be the hypotenus of the triangle formed by drawing the diagonal.
Hence,
Hypotenus = sqrt (opposite² + adjacent²)
AX = sqrt[(8²) + (6²)]
AX = sqrt(64 + 36)
AX = sqrt(100)
AX = 10
AHHHHHHhh asap plz answer!!
number one because if you do the math it's the o nly one that's different
Answer: 4 : 15
Step-by-step explanation:
The unit ratio of 2 : 8 is 1 : 4
The unit ratio of 5 : 20 is 1 : 4
The unit ratio of 3 : 12 is 1 : 4
However, the unit ratio of 4 : 15 is 4 : 15
Hope this helped!
In a bike race Tim rode 7 1/4 miles his teammate Bill rode 8 7/8 how many miles did they ride in all
Pls help ASAP. Help pls
Answer:
8
Step-by-step explanation:
x=25-17
x=8
don't forget to collect like terms
A baseball team had 80 players show up for tryouts last year and this year had 96 players show up for tryouts. Find the percent increase in players from last year to this year.
(Please dont just give the answer. I would appreciate it if you would put how to find the answer. Thanks )
Answer: x/100 = 96 - 80/80
so you multiply 80 times x and multiply 96-80 by 100 so
80x=1600
x= 20%
Step-by-step explanation:
Solve y3 = 64.
A.
y
=
6
4
3
y=
3
64
B.
y = 8
C.
y = 16
D.
y = 4