Answer:
Could You Please Explain More?
Step-by-step explanation:
The heights of five-year-olds are Normally distributed with a mean of 42.5 inches and a standard deviation of 2.5 inches. A random sample of 16 five-year-olds is taken and the mean height is recorded. What would be the standard deviation of the sampling distribution of all possible samples of size 16?
0.16
0.63
2.5
2.66
Answer:
0.63
Step-by-step explanation:
Please help.
Is algebra.
PLEASE HELP NO LINKS OR FILES.
I don't want links.
Answer:
a, d, e
Step-by-step explanation:
#1 Multiply the two polynomials.
[tex](2x+3)(5x^2+3x+2)=(2x)(5x^2)+(2x)(3x)+(2x)(2)+(3)(5x^2)+(3)(3x)+(3)(2)\\=10x^3+6x^2+4x+15x^2+9x+6\\=10x^3+21x^2+13x+6[/tex]
#2
[tex](3y+4)(2y^2+5y-3)=(3y)(2y^2)+(3y)(5y)-(3y)(3)+(4)(2y^2)+(4)(5y)-(4)(3)\\=6y^3+15y^2-9y+8y^2+20y-12\\=6y^3+23y^2+11y-12[/tex]
Use the distributive property to simplify each expression.
(-5d + 1) (-2)
Answer: 10d-2
Step-by-step explanation:
Answer:
10d - 2
Step-by-step explanation:
Multiply each term inside parentheses by -2, separately:
10d - 2 (answer)
Finding angle measures between intersecting lines
Answer:
x = 47°
Step-by-step explanation:
From the picture attached,
CPD is a straight line.
Therefore, ∠CPB and ∠DPB is a linear pair of angles.
And linear pair of angles are supplementary.
By the property of linear pair of angles,
m∠CPB + m∠DPB = 180°
133 + x = 180
x = 180 - 133
x = 47°
a box contains 18 blue flashlights 3 red flashlights 7 silver flashlights ans 2 black flashlights. the flashlights are identical in size and shape. if one flashlight is chosen at random what is the probability that the flashlight will be either blue or black?
Answer:
The answer is 20/30 or in simplified form 2/3
Step-by-step explanation:
The way I do it is I take the probability of blue flashlights, 18/30, added to the probability of black flashlights, 2/30. Then, you simplify by dividing both numbers by 10.
Sarah downloaded two apps which were 7.48 kb total. If one app was 4.78 kb, how big was the other app?
Answer:
2.7 kb
Step-by-step explanation:
Total kb = 7.48
Total apps = 2
one app = 4.78
another app = x
> 4.78 + x = 7.48
x = 7.48 – 4.78
= 2.7 kb
Each big square below represents one whole.
What percent is represented by the shaded area?
Answer:
173%
Step-by-step explanation:
I think?
0.46口 1/3 need help lmk
The last one, please answer
Answer:
the answer will be one times ten raised to the power five
Step by step explanation:Answer:
6.994x10^9 .................
2y+y=5 what first step would need to be taken
Answer:
you would need to add the like terms together
Step-by-step explanation:
Please help meee! (Solve area)
Answer:
First we can do (12*4)- thats the top rectangle. Remember area is base times height.
48
Next lets do (8*12)-thats the middle rectangle
48+ 96
Now the triangles.
you can just do 2*8/2 because a triangle is half of a rectangle.
48+ 96+ 8
add 8 again because theres 2 triangles-
48+96 + 8 +8
Your answer is 160
I hope this helps you!
Goodluck!
(can i have brainlinest if this is right!?)
<3
can someone help with this
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Step-by-step explanation:
Answer:
Do you need help with something or is this fr33 points?
A triangle has two sides of length 17 and 19. What is the smallest possible whole-number length for the third side?
Answer:
3
Step-by-step explanation:
A triangle has two sides of length 17 and 19. What is the smallest possible whole-number length for the third side?
To solve for the above question, a rule applies.
The rule states that:
The sum of any 2 sides must be greater than than the third side.
The possible values for the third side are
19 - 17 < x < 19 + 17( x is the third side )
2 < x < 36
Thus the smallest possible whole number is 3
which of the follwing list the tempatures in order to least to greatest
-1,-23,5,28
-23,-28,1,5
-28,-23 1 , 5
Answer:
-28,-23,1,5
Step-by-step explanation:
Ur welcome brainliest?
What’s the answer? PLEASE ! NO LINKS. thanks !
Answer:
84 [tex]cm^{2}[/tex]
Step-by-step explanation:
find the area of each shape and add them together
What number represents the opposite of point E on the number line?
Answer:
the opposite of point E is 3
Giving brainlist to whoever answers
Answer:
B I am 100% sure
Step-by-step explanation:
What is Mrs. Childs' score on the test if she got 12 out of 26 right?
Answer:
46%
Step-by-step explanation:
divide 12 by 26
12÷26= 0.46153846153
then move the decimal two places to the right to get your percentage
so Mrs. Childs' got a 46% on her test
The school orchestra sells carnations on Valentine's Day for $2 each. They buy the carnations that they sell from a local florist for $0.50 each plus a one-time $18 delivery charge. Write a system of equations that describes this situation and solve it using your preferred method.
Answer:
2x - (0.50x + 18) = profit
Step-by-step explanation:
x = number of carnations, for example if 3 carnations were sold, $6 from sales - (1.50 + 18) = profit. The 50 cents from each carnation that they bought to sell, plus 18 delviery fee. Hope this helped! Good luck!
The number of shelves, s, in a bookcase and the number of books, b, the bookcase can hold
Answer:
whats the question
Step-by-step explanation:
identify the like terms!! quick!! this is for a graded assignment and no links!!! is what i put right? i will give you brainliest!!
Answer:
Answer D
Yes, what you put is right :)
Step-by-step explanation:
I have a beautiful song for you :)
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He changed it once or twice, but I think it's here to stay
His thumbnails were made in Paint
But if you ask me, I think they're kind of quaint
Mr.Beast 6000, oh
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His random videos are the name of the game
Some might say they're his ticket to fame
The occasional intro may not make sense
But we all get a laugh at their expense
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. Visually compare the dot plot of heights of field hockey players to the dot plots for softball and basketball players. Shape: Center: Spread:
Answer:
Kindly check explanation
Step-by-step explanation:
Using visual comparison :
SHAPE :
Both plots are fairly left skewed as their peaks are more shifted to the right and tails to the left of the distribution.
The centre :
Both softball and basketball plots are centered around the median of the distribution. With softball having a centre (median value) of 5'4'' and basketball has a value of 5'8''.
Spread :
The softball plot spread from 4'9'' through 5'6''
While basketball spreads from 5'2'' through 6'0''
Solve the equation below:
(find x)
Answer:
X=-8
Step-by-step explanation:
3x-4=7×-4
3x-4=-28
3x=-28+4
3x=-24
x=-24/3
x=-8
Answer:
[tex]x =-8[/tex]
Step-by-step explanation:
Hello!
Remove the fraction by multiplying both sides by 7. Solve for x by isolating the variable.
Solve for x[tex]\frac{3x - 4}{7} = -4[/tex][tex]3x - 4 = -28[/tex][tex]3x = -24[/tex][tex]x = -8[/tex]The value of x is -8.
.find the slope and y intercept form equation from the table
Answer:
y = 4x - 26
Step-by-step explanation:
The change in y is 4 when the change in x is 1.
So the slope is change in y/change in x = 4/1 = 4
y = mx + b
30 = 4(14) + b
30 = 56 + b
b = - 26
Therefore, y = 4x - 26
Each hour, every person who knows a rumor tells two other people. If one person starts the rumor, then after the first hour, three people know the rumor. The next hour, those three people each tell two more people. After eight hours, how many people will know the rumor? You do not have to include units in your answer.
Answer:
384
Step-by-step explanation:
if each person who knows it tell 2 people then its doubling every hour
and for 8 hours the equation is
3x[tex]2^{7}[/tex] (to seventh power because 1st hour already happened)
3x2x2x2x2x2x2x2
6x2x2x2x2x2x2
12x2x2x2x2x2
24x2x2x2x2
48x2x2x2
96x2x2
192x2
384
On a coordinate plane, a rectangle is shown. It has points (2, 3), (4, 9), (7, 8), and (5, 2).
A rectangular table is positioned in a 10-foot by 10-foot room as shown.
How long is the longer edge of the table?
Square root of
feet
What is the area of the tabletop?
square feet
Answer:
the answer is 40 for the first one and 20 for the second one
Step-by-step explanation:
just did it and it was right
Answer:
40, 20
Source:
Trust me bro
A bridge is supported by triangular braces. If the sides of each brace have lengths 63 feet, 46 feet, and 40 feet, find the measure of the angle opposite the 46 foot side. Round to the nearest degree.
Given:
The sides of each brace have lengths 63 feet, 46 feet, and 40 feet.
To find:
The measure of the angle opposite the 46 foot side.
Solution:
According to the Law of Cosines:
[tex]\cos A=\dfrac{b^2+c^2-a^2}{2bc}[/tex]
We need to find the measure of the angle opposite the 46 foot side. So, [tex]a=46[/tex] and the other sides are [tex]b=63,c=40[/tex].
[tex]\cos A=\dfrac{(63)^2+(40)^2-(46)^2}{2(63)(40)}[/tex]
[tex]\cos A=\dfrac{3969 +1600-2116}{5040}[/tex]
[tex]\cos A=\dfrac{3453}{5040}[/tex]
[tex]\cos A=\dfrac{1151}{1680}[/tex]
Taking cos inverse on both sides, we get
[tex]A=\cos^{-1}\dfrac{1151}{1680}[/tex]
[tex]A=46.75503[/tex]
[tex]A\approx 47[/tex]
Therefore, the measure of the angle opposite the 46 foot side is 47 degrees.
Answer correctly with NO FILE (Or links) to get brainliest.
15 = 5(x +2 )
x=
ill mark brainliest and 20 points
Answer:
x=1
Step-by-step explanation:
15 = 5(x +2 )
15/5= 3
3-2= 1
x=1
