Answer:
True ; it is true
Step-by-step explanation:
The statement that y = 4 when x = 4, z = 20, and w= 4 is not true because the constant of proportionality is not equals to 2 / 5.
What is variation?Variation describes a simple relationship between two variables.
Therefore, y varies jointly as x and z and inversely as the square of w
y ∝ xz ∝ 1 / w²
Therefore,
y = kxz / w²
where
k = constant of proportionality
Hence,
y = 3
x = 3
z = 10
w = 2
yw² / xz = k
k = 3 × 2² / 3 × 10
k = 12 / 30
k = 6 / 15 = 2 / 5
Therefore, let's test for y = 4 when x = 4, z = 20, and w= 4.
k = 4 × 4² / 4 × 20
k = 64 / 80
k = 16 / 20 = 4 / 5
learn more on variation here: https://brainly.com/question/17068737
#SPJ2
What is the surface area in square inches of a cube with a side 7 inches long? HEL0 QUICK
Answer: a = 294 square inches
Use the formula: A = 6a^2
Answer:
294
Step-by-step explanation:
A=6x²
A=6*7²
A=6*49
A=294
x - -13 = 11 PLEASE HELP
Answer:
the answer is -2 because -(-13) translates to 13 and -2+13=11
(can I get brainliest)
Answer:
The answer is x = -2!
HELPPPPP PLEASEEEEE!!!!!!!!!
The x intercept is (9/2,0) or (4.5,0). The y intercept is (0,-1):)
Find the equation of the line.
6
The line is parallel to y =--x + 1 and passes through the point (-7, -3).
7
The equation of the line is
Answer:
y = - x - 10
Step-by-step explanation:
y - (- 3) = - (x + 7)
y = - x - 10
There are stars to circle there are 4 stars and 2 circles how much is the ratio
Answer:
2:1
Step-by-step explanation:
The original ratio is 4:2. Divide both sides by 2. Then you get 2:1.
Answer:2 stars for every one circle
Step-by-step explanation:
hope you get what i mean if not sorry my friend
Mitchell walked 5/12 of a mile in 1/2 of an hour. At this rate, how far could Mitchell walk in 1 hour?
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
[tex]2 \times \frac{1}{2} hour = 1hour \\ [/tex]
Thus ;
[tex]2 \times \frac{5}{12} \: \: miles = \frac{10}{12} \: \: miles = \frac{5}{6} \: \: miles \\ [/tex]
,♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
I think the answer is 5/6
Leila bought 3 bananas, which weighed a total of 3/4 of a pound . if each banana weighed the same amount , what is the weight of each banana ?
Answer:
1/4
Step-by-step explanation:
3/4 (total weight)
3 bananas
(3/4)/3=1/4
PLS GIVE BRAINLIEST
three less than the sum of a number and
twelve
Answer:
(x + 12) - 3
Step-by-step explanation:
I used x for "a number".
Hope this helps and pls do mark me brainliest:)
37 % of $2927 is what
Answer:
1082.99
Step-by-step explanation:
2927 - 100%;
x - 37%;
=> x = (37*2927)/100 = 1082.99
Lae bought grapes for $1.50 per pound.
Answer:
Where is the question or is that it?
1.Use the numbers in the table to create
Ordered pairs
2.Pounds are graphed on the x - axis
3.Plot the ordered pairs on the graph
4.Draw a straight line that starts at the origin and connects all the points
Where would you locate √6 on the number line?...
Between 2.75 and 3.0
Between 2.5 and 2.75
Between 2.0 and 2.25
Between 2.25 and 2.5
Answer:
Between 2.25 and 2.5
Step-by-step explanation:
The square root of 6 is 2.4494.... which is closer to 2.5
Diego lives 1/2 miles from school.What is 50% of 1/2
Answer:
0.25
Step-by-step explanation:
Find the m ULE in the triangle below.
L
109
RU
E49
Find the m ULE. Plzzzzz help hurry
please someone help me out on this
Answer:
Step-by-step explanation:
28
Answer:
27⁰
Step-by-step explanation:
angles on a straight line add up to 180⁰
180-(39+86+28)=YVZ
Convert as indicated.
108 ounces to pounds
Answer:
108 ounces is equal to 6.75 pounds.
Step-by-step explanation:
Answer:
Your answer is: 6.75 pounds
108 ounces equal to about 7 pounds if you round.
Step-by-step explanation:
Hope this helped : )
Joe has 6 marbles. Joe and Kay have 11 marbles. Kay and Sara have 7 marbles. How many marbles does Sara have?
Answer:
2
Step-by-step explanation:
Answer:
2
Step-by-step explanation:
Joe = 6
J + K = 11
Kay = 5
K + S = 7
Sara = 2
A scientist is filling beakers of water for an experiment. He begins with 3 liters of water in a large container and each beaker holds 2/5 of a liter of water. How many beakers can the scientist fill?
Answer:
just looking for free point..
Step-by-step explanation:
help with this question please
The radius of a circle is 10 meters. What is the angle measure of an arc bounding a sector
with area 150 square meters?
What is the sum of -2/3 and -4/6?
A. -4/3
B. -2/3
C. 2/3
D. 4/3
Answer:
A
Step-by-step explanation:
-2/3 = -4/6, -4/6 + -4/6 = -8/6 = -4/3
Answer: D. -4/3
Step-by-step explanation:
-2/3 + -4/6
make the denominators the same
so -2 * 2 and 3 * 2 = -4/6
-4/6 + -4/6 = -8/6 = -4/3
Jose uses 1/5 cup of red paint for every 3/5 cup of blue paint to make purple paint. Enter the number of cups of red paint Evelyn uses for 1 cup of blue paint.
Please help this is due tomorrow!!
[(15 x 3) + 3] = (12-6) = N
Answer:
45+3 = 6=N
48_6= N
42= N
:. N= 42
Step-by-step explanation:
:. N= 42
Answer:
did you mean to put 2 equal signs in this?
Step-by-step explanation:
that would make this false because the first part equals 48 and the second equals 6 and since 48 doesn't equal 6 this is a false statement
For homework, a student had to complete 54 problems total. If she finished 9 problems in
class, what is the ratio of problems she still needs to complete to problems that she's
already finished?
Answer:
10
Step-by-step explanation:
Answer:
45:9
Step-by-step explanation:
80% of teenagers have access to some social media . If you do a random survey of 400 teenagers, what is the probability that between 300 and 340 of them will patronize it.
Answer:
P(300 < p^ < 340) = 0.9876 or 98.76%
Step-by-step explanation:
We are given;
Population proportion; p = 80% = 0.8
Sample proportion; p1^ = 300/400 = 0.75 and p2^ = 340/400 = 0.85
Sample size: n = 400
z-score formula for sample proportion is;
z = (p^ - p)/(√(p(1 - p)/n)
Thus;
z1 = (0.75 - 0.8)/(√(0.8(1 - 0.8)/400)
z1 = -0.05/0.02
z1 = -2.5
z2 = (0.85 - 0.8)/(√(0.8(1 - 0.8)/400)
z2 = 0.05/0.02
z2 = 2.5
From online calculator of probability between 2 z-scores, we have;
P(-2.5 < z > 2.5) ≈ 0.9876
Researchers are interested in estimating the percentage of Americans who will get a flu shot this year. How many Americans should be surveyed to be 80% confident that the sample proportion of Americans who will get a flu shot this year is within 0.100 of the population proportion Assume we have a prior estimate of 45%. Round your z critical value to four decimal places.
Answer:
The sample size bedded is [tex]n =41[/tex]
Step-by-step explanation:
From the question we are told that
The margin of error is [tex]E = 0.100[/tex]
The sample proportion is [tex]\^ p = 0.45[/tex]
From the question we are told the confidence level is 80% , hence the level of significance is
[tex]\alpha = (100 - 80) \%[/tex]
=> [tex]\alpha = 0.20[/tex]
Generally from the normal distribution table the critical value of [tex]\frac{\alpha }{2}[/tex] is
[tex]Z_{\frac{\alpha }{2} } = 1.282[/tex]
Generally the sample size is mathematically represented as
[tex]n = [\frac{Z_{\frac{\alpha }{2} }}{E} ]^2 * \^ p (1 - \^ p ) [/tex]
=> [tex]n = [\frac{1.282}{ 0.100} ]^2 *0.45 (1 - 0.45 ) [/tex]
=> [tex]n =41[/tex]
[solved] These Cylinders are similar. Find the volume of the smaller cylinder. Round to the nearest tenth. (the answer is 84.9 cm^3)
Answer:
84.9 cm³
Step-by-step explanation:
Height of the bigger Cylinder = 5 cm
Volume of the bigger Cylinder = 393 cm³
Height of the smaller cylinder = 3 cm
Volume of the smaller cylinder = x cm³
Since they are similar, therefore: the cube of their ratio would equal the ratio of their volume.
Thus:
[tex] (\frac{5}{3})^3 = \frac{393}{x} [/tex]
[tex] \frac{125}{27} = \frac{393}{x} [/tex]
Cross multiply
[tex] 125*x = 393*27 [/tex]
[tex] 125x = 10,611 [/tex]
Divide both sides by 125
[tex] \frac{125x}{125} = \frac{10,611}{125} [/tex]
[tex] x = 84.888 [/tex]
Volume of the smaller cylinder = 84.9 cm³ (to nearest tenth?
I suck at math I need help
Answer:
74° is the answer
In the triangle
112°+33°+a=180. (sum of angles of triangle)
a=180-145
a=35°
a+b+71°=180. (linear pair)
35°+b+71°=180
b=180-106
{b= 74°}
5
y=2x+5y, equals, 2, x, plus, 5
Complete the missing value in the solution to the equation.
(
2
,
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
[tex]y = f(x) = 2x + 5[/tex]
[tex]f(2) = 2(2) + 5[/tex]
[tex]f(2) = 4 + 5[/tex]
[tex]f(2) = 9[/tex]
Thus ;
[tex]( \: 2 \: , \: 9 \: )[/tex]
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
Answer:
9
Step-by-step explanation:
Rudy has been paying an annual homeowners insurance premium of $1,106.30 ($0.37 per $100 of value) since
he first purchased his house. For the past six months, Rudy has completed some major improvements to his
house to improve its overall value. If Rudy successfully adds $50,000 to the value of his house, what will his new
annual homeowners insurance premium be?
a. $185.00
b. $315.00
c. $1,291.30
d. $1.351.14
Please select the best answer from the choices provided
Answer:
c. $1,291.30
Step-by-step explanation:
Calculation what will his new annual homeowners insurance premium be
Insurance premium= [$1,106.30+ ($0.37/ $100*$50,000)]
Insurance premium=$1,106.30+$185
Insurance premium=$1,291.30
Therefore what his new annual homeowners insurance premium will be is $1,291.30
Answer:
c
Step-by-step explanation:
edge 2021
Plz answer this i have a test and im lost i will give brainliest
Answer:
its b :) im pretty sure
Step-by-step explanation: