Height of 10th grade boys is normally distributed with a mean of 63.5 in. and a standard deviation of 2.9 in . The area greater than the -score is the probability that a randomly selected 14- year old boy exceeds 70 in . What is the probability that a randomly selected grade boy exceeds 70 in.? Use your standard normal table
Answer:
Step-by-step explanation:
Use a calculator with probability distribution functions built-in:
normalcdf(70, 10000,63.5,2.9) = 0.013 (a little over 1%)
You are given that cos(A)=−45, with A in Quadrant III, and cos(B)=15/17, with B in Quadrant I. Find cos(A+B). Give your answer as a fraction.
Answer:
con you be more organized on how you post the question will answer if fixed
Step-by-step explanation:
Two angles are given M angle g = (2x-90) M angle h=(180-2x) Which statements are true about angle G and angle H it's both angles are greater than zero?Select all that apply.
Answer:
angle g and h are complementary angles.
Step-by-step explanation:
Given the angles
g = (2x-90
h = 180 - 2x
Taking the sum of the angles
g + h = 2x- 90 + 180 - 2x
g + h = 2x - 2x - 90 + 180
g = h = -90+ 180
g + h = 90degrees
Since complementary angles are angles that their sum id 90degrees, hence angle g and h are complementary angles.
Which function decreases faster please help
Answer:
Step-by-step explanation:
If m∠3 is 124° and m∠4 = 8x + 40, what is the value of x?
Answer:
10.5
Step-by-step explanation:
M«3 =M«4
124°=8x+40
124°-40=8x+40-40
84=8x
84/8=8x/8
10.5=x
cuanto es 2×-8+7×=19
Answer:
x=3
Step-by-step explanation:
Answer:
la respuesta es x=3
Step-by-step explanation:
2x−8+7x=19
2x+−8+7x=19
(2x+7x)+(−8)=19
9x+−8=19
9x−8=19
9x−8+8=19+8
9x=27
Step 3: Divide both sides by 9.
9x9=279
x=3
Answer:
x=3
A membership at a gym cost $15. A person without a membership must pay $1.75 each time they go to the gym. How many times would a person have to go to make the membership a better deal
Select all of the expressions that are equal to 8 × 35 . A. 8 × ( 30 + 5 ) B. 5 + 3 × 35 C. ( 8 × 30 ) + ( 8 × 5 ) D. ( 8 + 30 ) × ( 8 + 5 ) E. 8 × ( 20 + 15 )
Answer:
A,C,E
Step-by-step explanation:
Answer:
A,C,E
Sryy if wrong but im pretty sure its right
Step-by-step explanation:
Determine whether the set of data shown below displays exponential behavior. Write yes or no.
Explain why or why not.
х 21 18 15 12
у 30 23 16 9
pls someone help quick
NO LINKS!!!!
Answer:
It does not display exponential behavior, so no.
Step-by-step explanation:
x values are consistently decreasing by 3
y values are consistently decreasing by 7
Yes, the set of data shown in the table displays exponential behavior.
What is a function?A function is a relationship between inputs where each input is related to exactly one output.
Example:
f(x) = 2x + 1
f(1) = 2 + 1 = 3
f(2) = 2 x 2 + 1 = 4 + 1 = 5
The outputs of the functions are 3 and 5
The inputs of the function are 1 and 2.
We have,
The exponential function is given as f(x) = [tex]a^x[/tex]
From the table,
f(x) = [tex]a^x[/tex]
30 = c[tex]a^{21}[/tex] _____(1)
23 = c[tex]a^{18}[/tex] ______(2)
Now,
From (1) and (2)
30/[tex]a^{21}[/tex] = 23/[tex]a^{18}[/tex]
[tex]a^{18 - 21}[/tex] = 23/30
[tex]a^{-3}[/tex] = 23/30
1/[tex]a^3[/tex] = 23/30
a³ = 30/23
a = ∛(30/23)
a = 1.09
Now,
30 = c[tex]a^{21}[/tex]
30 = c x [tex]1.09^{21}[/tex]
c = 30 / 6.11
c = 4.91
Now,
The function from the table is f(x) = 4.91 x [tex]1.09^x[/tex]
Thus,
The set of data is an exponential function.
Learn more about functions here:
https://brainly.com/question/28533782
#SPJ2
What’s the answer no work needed
Given f (x) = 5x2 and g(x) = 2x + 3, find f(g(-4))
Answer:
125
Step-by-step explanation:
Given
f(x) = 5x²
g(x) = 2x + 3
Now
g(-4) = 2 * (- 4) + 3
= - 8 + 3
= - 5
Also
f(g(-4)) = f( -5)
= 5 * ( -5)²
= 5 * 25
= 125
I haven't been in school for a few days and I don't rlly understand range, but I need the answer as soon as possible or my mum's gonna ground me, i'll mark brainliest
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Answer: x < -3/2
Step-by-step explanation:
Step 1: Subtract 5 from both sides.
Step 2: Divide both sides by -2.
Have a great day and I hope this is right!
A toy company has 6 different heights of its best-selling action figure, labeled versions 1 through 6. Each version is modeled from clay molding of the action figure. Version 1 is 125% taller than the clay molding of the action figure. The heights of action figure versions 2 through 6 are each 125% taller than the previous version of the action figure. The clay molding of the action figure is 4 inches tall. Which function can be used to find the height in inches of each version of action figure, where 1 ≤ v ≤ 6?
h(v) = 1.25(v+ 4)
h(v) = 4(1.25)v
h(v) = 1.25(4)v
h(v) = 4(v + 1.25)
Answer:
a
Step-by-step explanation:
a
Select ALL the right triangles, given the
lengths of the sides
PLEASE HELP I WILL MARK BRAINLIEST!!!
Answer:
ok 890 5578 9907 77890 ok find this id uf answer
PLEASE HELP ME ANSWER!
Answer:
dsg
Step-by-step explanation:
srg
Answer:
x= 110
Step-by-step explanation:
vertical angles
set up :
6x + 115 = 7x +5 (subtract 6x from both sides)
115 = x +5 (subtract 5 from both sides)
110 = x (your answer)
CHECK:
6(110) + 115 = 775
7(110) + 5 = 775
Kameron's unicycle wheel has a spoke length of 16 inches.
16 in.
Approximately how many inches of ground does Kameron cover in 3 full rotations of the unicycle wheel? (Use 3.14 as an approximation of pi.)
Answer:
301.44 inches
Step-by-step explanation:
The spoke is from the center of the wheel to the edge, so its length is the radius, or 16 inches.
You want to find the distance that one rotation will take you, so you need the wheel's circumference.
Circumference = 2πr
2 x 3.14 x 16 = 100.48
100.48 inches is the distance of only 1 full rotation, so you just need to multiply 100.48 by 3 to get the distance of 3 rotations.
100.48 x 3 = 301.44
HELP MEH PLEASEEEEEEEEE
Answer: A matches with Graph 4, B matches with Graph 3, C matches with Graph 1, and D matches with Graph 2.
Geoff found the area of the figure.
Which expressions could he have used? Select all that apply.
Answer:
a and d
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
we can split it and find areas and plus them
what’s the slope of the line bellow
HELP WITH THESE TWO PLEASE
Choose the number that can be labelled as a natural number.
99, 2, 10, 0.33, -2, 56, 17, -22
Answer:
99, 2, 10, 56, 17
Step-by-step explanation:
hope it helps you ❤️❤️
PLS HELP ME WITH 7 AND 6 PLSLSLSLSLS PLS PLS I BEG U PLS
Answer: 7= D, 26 units
Step-by-step explanation:
Take the length. 0,0 to 0,9 the length is 9 Next take the width 0,9 to 4,9 the width is 4 L+Wx2 13x2=26
which of the following is an odd function?
Answer: I beleve it is a hope this helpes
Step-by-step explanation:
pleas make brainly
Question 1
Construct two expressions that are equivalent to 27x^12.
I’m in a test need an answer ASAP please
What ia the Lcm of 99 and 24
Step-by-step explanation:
792
........
........
........
.......
........
...
The LCM of 24 and 99 is 794
An expression is given that has a value between 4.44.4 and 4.54.5, and where xx represents an integer. \sqrt{x}+\sqrt{x} x + x What is the value of xx?
Answer:
[tex]x = 5[/tex]
Step-by-step explanation:
Given
[tex]\sqrt x + \sqrt x = (4.4,4.5)[/tex]
Required
Find x
When the result is 4.4, we have:
[tex]\sqrt x + \sqrt x = 4.4[/tex]
This gives:
[tex]2\sqrt x = 4.4[/tex]
Divide both sides by 2
[tex]\sqrt x = 2.2[/tex]
Square both sides
[tex]x = 2.2^2[/tex]
[tex]x = 4.84[/tex]
When the result is 4.5, we have:
[tex]\sqrt x + \sqrt x = 4.5[/tex]
[tex]2\sqrt x = 4.5\\[/tex]
Divide both sides by 2
[tex]\sqrt x = 2.25[/tex]
Square both sides
[tex]x = 2.25^2[/tex]
[tex]x = 5.0625[/tex]
So, the value of x is between 4.84 and 5.0625
i.e.
[tex]x = (4.84,5.0625)[/tex]
The only integer between the above interval is 5.
Hence:
[tex]x = 5[/tex]
QUICKKKKKKKKKK I NEED THIS ANSWER
IF WRONG REPORTED
Answer:
D
Step-by-step explanation:
help pleaseeeeeeeeeeeee
Answer:
B
Step-by-step explanation:
-2 is greater than -3
Answer:
The answer is b
Step-by-step explanation:
. How many minutes is it from 23:35 today to 01:15 tomorrow?
A 100
B 110
C 120
D 130
E 140
Answer:
A (100)
Step-by-step explanation:
If 2 hours pass starting at 23:35 today, then tomorrow the time will be 1:35. The difference between 1:35 and 1:15 is 20 (minutes) Because there are 120 minutes in 2 hours (60 minutes per hour), This means we do 120 minutes minus 20 minutes. This gives us an answer is A, 100 :)