Answer:
y is 8/5 when x = -4.
Step-by-step explanation:
If the value of "Y" varies directly with "X", we can write y = kx, where k is the constant of proportionality.
If "y=-8,when x=20," then we can find k: -8 = 20k, or k = -2/5.
Then y = (-2/5)x.
If x = -4, then y = (-2/5)(-4) = 8/5
y is 8/5 when x = -4.
Please helppp!! I don't know how to do this
Answer:
(-2, -4)
Step-by-step explanation:
Start at point O which has coordinates (0, 0). Go 2 units left. Go 4 units down. Now you are at point I.
Answer: (-2, -4)
On a math test, a group of children scored 25, 17, 21, 25, 23, 21, 27, 21, and 18 out of a total of 30. Find their median.
Answer:
21
Step-by-step explanation:
Place the values in ascending order like this:
17,18,21,21,21,23,25,25,27
Find the middle value:
21
So 21 is the median
Solve for x. Enter the solutions from least to greatest. 3x^2 – 33x + 54 = 0
lesser x =? greater x=?
Answer:
Step-by-step explanation:
3x² - 33x + 54 = 0
Divide the whole equation by 3
x²- 11x + 18 = 0
Sum = -11
Product = 18
Factors = -9 , -2 { - 9 + (-2) = -11 ; (-9) *(-2) = 18}
x² - 2x - 9x + -9 * -2 = 0
x(x - 2) - 9(x - 2) = 0
(x-2)(x-9) = 0
x - 2 = 0 ; x - 9 = 0
x = 2 ;x = 9
Lesser x = 2
greater x = 9
Answer:
lesser x = 2
greater x = 9
Step-by-step explanation:
3x² - 33x + 54 = 0
Divide both side of the equation by 3
x² - 11 x + 18 = 0
x² - 2x - 9x + 18 = 0
x ( x - 2 ) - 9 ( x - 2 ) = 0
( x - 9 ) ( x - 2) = 0
x - 2= 0 ; x - 9 = 0
solve for x
x = 2 ; x = 9
lesser x = 2
greater x = 9
Find the values of x,y, and z and the perimeter
Karl is making a pot of chili. The recipe calls for StartFraction 3 Over 8 EndFraction cup of chili powder, but Karl only wants to use half as much so it won’t be so spicy. How much chili powder should Karl use?
Answer:
3/16 or 3 over 16
Step-by-step explanation:
Find half of 3/8:
1/2x3/8 = 3/16
In a group of 20 students there are 12 boys and 8 girls 4 of the boys play on foot ball team what is the probability of choosing 1 student at random from the group who is not on football team
Answer:
There is a 1 in 5 chance. (1/5)
Express Cos K as a fraction in the simplest terms.
The correct value of Cos K is 5/23
Step-by-step explanation:
In a right angle triangle, there are 3 side
1. Hypothenus (this is the longest)
2. Adjacent
3. Opposite
However, we can only determine the adjacent and opposite if an angle is marked in the triangle.
Now, we shall determine the value of Cos K. This can be obtaineasobtain as followed:
From the question given above, the following data were obtained:
Hypothenus = 23
Adjacent = 5
Cos K =? C
The value of Cos K can be obtained by using the cosine ratio as as illustrated below:
[tex]Cos K =\frac{Adjacent}{Hypothenus}\\\\Cos K = \frac{5}{23}[/tex]
Therefore, the value of Cos K is 5/23
Learn more: https://brainly.com/question/12369466
Question 15 of 44
Which of the following arcs are congruent in the circle below
Use abc to find the trigonometric ratios. Enter your answer as fractions
Answer:
Tan <A = 4/3
Cos <A = 3/5
Sin <A = 4/5
Step-by-step explanation:
From the diagram given
Hypotenuse AB = 10
Adjacent = 6
Opposite = 8 (side facingc<A)
According to SOH CAH TOA
Tan <A = Opposite/adjacent
Tan <A = BC/AC
Tan <A = 8/6
Tan <A = 4/3
For Cos <A;
Cos <A = adj/hyp
Cos <A = 6/10
Cos <A = 3/5
For sin<A:
Sin <A = opp/hyp
Sin <A = 8/10
Sin <A = 4/5
Value of x? Complementary angles, easy.
Answer:
14 = x
Hope that this helps!
Question 4 of 12
Write a point-slope equation for the line that passes through the point (1, 22)
and is parallel to the line given by y = 14x-3. Do not use parenthesis on the y
side.
Answer:
y - 22 = 14(x - 1)
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = 14x - 3 ← is in slope- intercept form
with slope m = 14
Parallel lines have equal slopes
The equation of a line in point- slope form is
y - b = m(x - a)
where m is the slope and (a, b) a point on the line
Here m = 14 and (a, b) = (1, 22) , then
y - 22 = 14(x - 1)
The lateral area of a cylinder is 3,620 square inches. The radius is 9 inches. Describe the height of the cylinder in terms of inches.
Answer:
64.05 in
Step-by-step explanation:
Lateral surface area of a cylinder = 2πrh
π= 3.14
r = radius = 9
h = height
3620 = 2 x 3.14 x 9 x h
3620 = 56.52h
h = 3620 / 56.52
h = 64.05 in
Someone tell me what this question is
Answer:
Orange juice that is 3 dollars per 1 jug
Step-by-step explanation:
A unit rate is per 1 of an item
The only 1 that is per 1 of an item is
Orange juice that is 3 dollars per 1 jug
Answer:
❍ The cost of orange juice is $ 3 per 1 jug.
Step-by-step explanation:
Unit rate means second quantity is 1.For example :- 20 per 1 litre. where, first quantity is 20 and second quantity is 1 .So, The cost of orange juice is $ 3 per 1 jug is represent the unit rate.
Check whether the number 465798 is divisible by 9. Write the steps.
Answer:
No, the answer would be 51755.3 (repeating), so no.
Step-by-step explanation:
Find the value of x
please help
Answer:
It's 4+33-37 so that's the answer
1/8 pens are in a bag and is to be shared between 3 people . What fraction of pen should each person get?
Answer:
1/24
Step-by-step explanation:
1/8 divided 3/1
1/8 x 1/3=1/24
Sarah's gross income last month was £1260. She pays 20% tax on her gross income. How much tax did Sarah pay last month?
Answer:
£252
Step-by-step explanation:
20% of £1260 = £252
Suppose that many large samples were taken from a population and the sample proportion centered around 0.25 which of the following is most likely the population parameter
0.25
0.45
0.35
0.15
Answer:
0.25
Step-by-step explanation:
Hope it helps, sense it’s centered around 0.25 then the parameter would be 0.25
To It’s centered around 0.25 then the parameter would be 0.25.
We have given,
Suppose that many large samples were taken from a population and the sample proportion centered around 0.25
We have to determine which of the given is most likely the population parameter.
What is the center parameter in the large sample?
A sample means from any distribution. We could have a left-skewed or a right-skewed distribution.
To It’s centered around 0.25 then the parameter would be 0.25
Therefore option A(0.25) is correct
To It’s centered around 0.25 then the parameter would be 0.25.
To learn more about the population parameter visit:
https://brainly.com/question/2292917
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The number of lawns l that a volunteer can mow in a day varies inversely with the number of
shrubs s that need to be pruned that day. If the volunteer can prune 6 shrubs and mow 8
lawns in one day, then how many lawns can be mowed if there are only 3 shrubs to be
pruned?
Answer:
12
Step-by-step explanation:
divide 8 by 6
=1.333333333333
1.333333333333 times 9
=12
edsedsedsedsedseds HELP PLZ FAST
Answer:
12x + 300 = 450
Step-by-step explanation:
Overtime payment = $12/hWeekly income = $300Overtime hours = x
Equation:
12x + 300 = 450what is psychology?
Answer:
the scientific study of the human mind and its functions, especially those affecting behaviour in a given context.
Answer:
the scientific study of the human mind and its functions, especially those affecting behaviour in a given context.
Step-by-step explanation:
the width of a rectangle is 2x²+9x-7 and the length is x²-9. Find the perimeter of the rectangle.
Answer:
---
Step-by-step explanation:
W=2x²+9x-7
L=x²-9
2(3x²+9x-16)
6x²+18x-32
The bold is the perimeter.
---
hope it helps
HELP! A triangle on the coordinate plane has (-8,3),(3,9), and (9,3). What is the area, in square units, of the triangle?
Answer: i believe the answer is 51
Step-by-step explanation:
Someone help me please!
Answer:
The radius is 25 cm
A
Step-by-step explanation:
Area =[tex]\pi[/tex]* r^2
Area = 625 * [tex]\pi[/tex]
625 [tex]\pi[/tex] = [tex]\pi[/tex] * r^2 The [tex]\pi[/tex]s cancel out
r^2 = 625 Take the square roots of both sides
sqrt(r^2) = sqrt(625)
r = 25
Determine the value of 'X
Answer:
x=22° hope it helps:)
Step-by-step explanation:
Please mark it the brainliest if you won't mind:)
(:
Answer:
x =22
Step-by-step explanation:
ABCD is a parallelogram. In parallelogram, adjacent angles are supplementary.
∠B +∠C = 180
4x + 12 + 3x + 14 = 180
Combine like terms
4x +3x + 12+ 14 = 180
7x + 26 = 180 {Subtract 26 from both sides}
7x = 180 - 26
7x = 154 {Divide both sides by 7}
x = 154/7
x = 22
Now that you know the height of the cone how can you solve for the slant height?
Answer:
imagine a triangle
one side is just upwards trough the cone, one side is the radius of the circle and the last one is the slant height.
remember the pythagoras stuff
so
(slantheight)² = radius² + height²
or finally:
slantheight = squareroot (radius² + height²)
The graph of an absolute value function = a|x| includes the point (1,6). Complete the following statements. The value of a is ____
Answer:
6
Step-by-step explanation:
y = f(x)
6 = a |1 |
6 = a. 1
a = 6/1
a = 6
Answer:
[tex] \displaystyle a = 6[/tex]
Step-by-step explanation:
we are given a absolute value function
[tex] \displaystyle f(x) = a |x| [/tex]
we want to figure out the value of a
since we are a point which is on the function we can figure out a by using the point i.e (1,6) this point tell us when x is 1 f(x) is 6 thus
substitute:
[tex] \displaystyle 6= a \cdot |1| [/tex]
absolute value of any integer is positive therefore,
[tex] \displaystyle 6= a \cdot 1[/tex]
simplify multiplication:
[tex] \displaystyle 6= a [/tex]
hence,
the value of a is [tex]\underline{\quad 6 \quad}[/tex]
the amount of rupees 1008 enumal rate 10% is rupees 1200 find the instrest
Answer:
Step-by-step explanation:
Amount=Principal + Interest
1200=1008 + interest
1200-1008=interest
rupees 192 = Interest
Write the equation of a line that has a slope of 1/2 and passes through (6, -4). Write your answer in slope-intercept form. PLEASE HELP
Answer:
y = 1/2x - 7
Step-by-step explanation:
y = 1/2x + b
-4 = 1/2(6) + b
-4 = 3 + b
-7 = b
The half price of helium-5 is 7.6 X 10 to the power of negative 22 seconds and the half-life helium -9 is 7 x 10 to the power of negative 21-second approximately how many times greater is the half life of helium and -9 then that of helium -5
Answer:
Approximately 9.211 times
Step-by-step explanation:
Given
[tex]x = 7.6 * 10^{-22}s[/tex] --- half life of helium-5
[tex]y = 7 * 10^{-21}s[/tex] --- half life of helium-9
Required
How many times greater is y than x
To do this, we simply divide y by x
[tex]\frac{y}{x} = \frac{7 * 10^{-21}s}{7.6 * 10^{-22}s}[/tex]
[tex]\frac{y}{x} = \frac{7 * 10^{-21}}{7.6 * 10^{-22}}[/tex]
Apply law of indices
[tex]\frac{y}{x} = \frac{7 * 10^{-21--22}}{7.6}[/tex]
[tex]\frac{y}{x} = \frac{7 * 10^{-21+22}}{7.6}[/tex]
[tex]\frac{y}{x} = \frac{7 * 10}{7.6}[/tex]
[tex]\frac{y}{x} = \frac{70}{7.6}[/tex]
[tex]\frac{y}{x} = 9.211[/tex]
