Answer:
The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero? Average of 20 numbers = 0. Therefore Sum of 20 numbers = (0 x 20) = 0 It is quite possible that 19 of these numbers may be positive and if their sum is a, then 20th number is (-a).
Step-by-step explanation:
Work out the value of X
Answer:
x = 39
Step-by-step explanation:
3x - 15 + 2x + 2x + 2x +24 = 360
9x = 360 + 15 - 24
9x = 351
x = 39
The ratio of Green marbles to total marbles in a bag is 2 to 9. The ratio of red marbles to total marbles in th same bag is 1 to 3 which of the following statements is true
what is the value of k
Answer:
k = 10
Step-by-step explanation:
180° - 115° = 65°
(4k + 5) + (6k + 10) + 65 = 180
4k + 5 + 6k + 10 + 65 = 180
10k + 80 = 180
10k = 100
k = 10
Answer:
solution:
ang.XZY+ang.ZXY=ang.ZYM reason: the exterior angle of a triangle is equal to the sum of opposite interior angles 2.(4k+5)+(6K+10)=115 3. 10k +15=115 4. 10k =100 5 k= 10The mean of four numbers is 2.6
One of the four numbers is 5
Find the mean of the other three numbers.
Answer:
Step-by-step explanation:
the "mean" just means the "average"
So if the average of four numbers = 2.6
To find the total of the four numbers, you would multiply 2.6 by 4.
2.6 x 4 = 10.4
One of the four numbers is 5. (given in the question)
This means that the total of the remaining three numbers is:
10.4 - 5 = 5.4
Then divide 5.4 by 3 to find the average of the 3 numbers.
Mean of the other 3 numbers = [tex]\frac{5.4}{3}[/tex] = ?
Which is the graph of y=x^2-4x+4?
Three watches and five lamps cost $176 in all. Five watches and three lamps cost $208 in all. What is the cost of one lamp?
$200/5 lamps= $40 per lamp
Final answer: $40
Using the elimination principle, the cost of one lamp is $16
Let :
watches = a Lamps = b3a + 5b = 176 - - - - (1)
5a + 3b = 208 - - - (2)
Multiply (1) by 5 and (2) by 3
15a + 25b = 880 - - - - (3)
15a + 9b = 624 - - - - - (4)
Subtract (3) and (4)
16b = 256
b = (256 ÷ 16)
b = $16
Therefore, the cost of one lamp is $16
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PLEASE HELP ME!! WILL MARK BRIANLIEST!
Answer:
462
Step-by-step explanation:
15 x 11 + 33 x 9 = 462
100% sure gimme brainliest please thanks
Answer:
Its 462
Step-by-step explanation:
Which function is graphed below? pls help
Answer:
its b Brother
Step-by-step explanation:
A proportion often shows the relationship between:
Answer:
It compares two numbers that can represent many of things. For example, people, food & items.
Step-by-step explanation:
Find the slope of the line that passes through the points: (1, 1) and (7, 5) . If you get stuck , try plotting the points on graph paper and drawing the line through them with a ruler.
Answer:
2,3
Step-by-step explanation:
The slope of the line that passes through points (1, 1) and (7, 5) is 2/3.
What is slope ?Slope is a notation that shows that a surface of which one end or side is at a higher level than another surface.
The formula for slope of a line that passes through two points (x₁.y₁) and (x₂,y₂) is,
y₂ - y₁ = m(x₂ - x₁)
The given points are, (1, 1) and (7, 5).
The slope of the line is given by formula m = (y₂-y1)/(x₂-x₁)
m= (5-1)/(7-1)
m = 4/6
m = 2/3
The slope of the line that passes through points (1, 1) and (7, 5) is 2/3.
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what is the equivalent of 3-(-6)
Answer:
3-(-6) = 9
Step-by-step explanation:
3-(-6) simplifies to 3 + 6.
We would have to distribute the outside negative into the inside to get rid of the parenthesis. Then, we would add.
[tex]3-(-6)\\\\-1 * -6 = 6\\\\3-(-6)=\boxed{3+6}=9[/tex]
Hope this helps.
j(2x+9) m(6x-1)
i don’t get this at all
Answer:
omg that one is hard but it is 18j-6m
5x- 13x - 44 = 2 please help!!!!!!!!!!!!!
2.) state the equation for y
Answer:
y = 2^(x - 4)
Step-by-step explanation:
f(g(x)) = f(x - 4) = 2^(x - 4)
27=p(1+r3) solve for r
p = 27
r = 0
p(1+r3) = 27
27(1+0(3)) = 27
27(1+0) = 27
27(1) = 27
27 = 27
Olivia chose 10/21 . How did she get that answer?
what is 1.25x1.19 pls hurry
What is the value of x? Round to the nearest tenths place.
Answer:
ok x should be 30
Step-by-step explanation:
The diagram below represents the side view of a bike ramp.
Which of the following is closest to the value of x ?
Answer:
32
Step-by-step explanation:
We are finding X and it connects to the base and the height, so it is going upward only a bit, so you add the base to the height or 26 + 6 = 32.
Answer:
32
Step-by-step explanation:
All you need to do is add 26 + 6=32
Functionally important traits in animals tend to vary little from one individual to the next within populations, possibly because individuals who deviate too much from the mean have lower fitness. If this is the case, does variance in a trait rise after it becomes less functionally important? Billet et al. (2012) investigated this question with the semicircular canals (SC) of the three-toed sloth (Bradypus variegatus). The authors proposed that since sloths don't move their heads much, the functional importance of SC is reduced, and may vary more than it does in more active animals. They obtained the following measurements of the ratio of the length to width of the anterior SC in 6 sloths. Assume this represents a random sample. In other, more active animals, the standard deviation of this ratio is 0.09.
Answer:
The 95% confidence interval for the standard deviation is (0.14, 0.54).
Step-by-step explanation:
The complete data and question is:
Sloth CW Ratios ; {1.5 , 1.09 , 0.98 , 1.42 , 1.49 , 1.25}
The 95% confidence interval for the standard deviation of this data is < σ < (two decimals - include the leading zero) .
Solution:
Compute the sample standard deviation as follows:
[tex]\bar x=\frac{1}{n}\sum x=\frac{1}{6}\times 7.73=1.2883\\\\s=\sqrt{\frac{1}{n-1}\sum (x-\bar x)^{2}}=\sqrt{\frac{1}{6-1}\times 0.2387}=0.2185[/tex]
The (1 - α)% confidence interval for the variance is:
[tex]CI=\frac{(n-1)s^{2}}{\chi^{2}_{\alpha/2}}<\sigma^{2}<\frac{(n-1)s^{2}}{\chi^{2}_{1-\alpha/2}}[/tex]
Confidence level = 95%
⇒ α = 0.05
The degrees of freedom is,
df = n - 1 = 6 - 1 = 5
Compute the critical values of Chi-square:
[tex]\chi^{2}_{\alpha/2, (n-1)}=\chi^{2}_{0.025,5}=12.833\\\\\chi^{2}_{1-\alpha/2, (n-1)}=\chi^{2}_{0.975,5}=0.831[/tex]
*Use a Chi-square table.
Compute the 95% confidence interval for the variance as follows:
[tex]CI=\frac{(n-1)s^{2}}{\chi^{2}_{\alpha/2}}<\sigma^{2}<\frac{(n-1)s^{2}}{\chi^{2}_{1-\alpha/2}}[/tex]
[tex]=\frac{5\times (0.2185)^{2}}{12.833}<\sigma^{2}<\frac{5\times (0.2185)^{2}}{0.831}\\\\=0.0186<\sigma^{2}<0.2873\\\\=\sqrt{0.0186}<\sigma<\sqrt{0.2873}\\\\=0.1364<\sigma<0.5360\\\\\approx 0.14<\sigma<0.54[/tex]
Thus, the 95% confidence interval for the standard deviation is (0.14, 0.54).
3 /10 4/ 8 which one is bigger?
Answer:
4/8
Step-by-step explanation:
3/10 is 0.30 and 4/8 is 0.5
OHHHHHHHHHHHHHH WHO LIVES IN A PINEAPPLE UNDER THE SEA _______?
Answer:
Sponge Bob Square Pants!
Absorbent and yellow and porous is he.
Sponge Bob Square Pants!
If nautical nonsense be somethin' ya wish.
Sponge Bob Square Pants!
Then drop on the deck and flop like a fish.
Sponge Bob Square Pants!
Ready?
Sponge Bob Square Pants,
Sponge Bob Square Pants,
Sponge Bob Square Pants,
Sponge Booob Square Paaants!
Ah Ha Ha, Ha Ha Ha, Ha, hArgh wh..arire..Ha arrrigh.
Step-by-step explanation:
-7x+3y=1 and 3y+12=-6
Answer:
the sums are given in explainationhope you like the answerplease mark the answer as brainliestwill give brainlist
Answer:
B is the correct answer I the math hopes this helped!
y = 3x + 3
Is this non linear
It is linear. Not non-linear. The line goes straight, even if it has a y axis, it does not curve and the change in y is constant and same each time.
Convert 255 mL to L / Convertir 820 cm a m
Answer:
255 mL = .255 L
Step-by-step explanation:
820 cm = 8.2 m
Which of the following are exterior angles? Check all that apply.
The answer is A, D, and F.
We have given that the following are exterior angles.
What is the exterior angle?
The angle between a side of a polygon and an extended adjacent side. an angle formed by a transversal as it cuts one of two lines and is situated on the outside of the line.
Therefore, The answer is A, D, and F.
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Answer: D, F
Step-by-step explanation:
The answer is D: <2 and F: <4
HELP PLEASE , ASAP ; 100 POINTS
Answer:
icoles
Step-by-step explanation:
Answer:
It's 31x
Step-by-step explanation:
Add the numbers up.
T-shirts
$7.50
Shorts
$9.00
Windbreakers
$12.25
If she will buy 35 T-shirts, 45 pairs of shorts, and 25 windbreakers, what will be her total cost?
$958.75
$973.75
$1,021.25
$1,038.75
Answer:
$973.75
Step-by-step explanation:
7.50x35=262.5
45x9.00=405
25x12.25=306.25
If you add all the sums together you would get $973.75
Describe two different ways to use transformations to change f(x) = x into g(x)=-3x-12
Answer:
See below
Step-by-step explanation:
GivenFunction f(x) = xTransformation ways1. Reflection by a factor of (-3) and vertical shift down -12 units
f(x) = x → (-3) ⇒ h(x) = -3x → (-12) ⇒ g(x) = -3x - 122. Vertical shift up by 4 units and reflection by a factor of (-3)
f(x) = x → (+4) ⇒ h(x) = x + 4 → (-3) ⇒ g(x) = -3x - 12