Answer:
a. -1.35
b. 0.177016
Step-by-step explanation:
According to the question, following data is given
Brown eyes american percentage is 45
Random sample be 80 out of which 30 had brown eyes
Based on the above information
The computation is shown below:
a. The proportion of the sample is
[tex]\bar p = \frac{30}{80}\\\\= 0.375[/tex]
The z value is
[tex]z = \frac{\bar p - p }{\sqrt{\frac{p(1 - p)}{n} } } \\\\\frac{0.375-0.45 }{\sqrt{\frac{0.45(1 - 0.45)}{80} } }[/tex]
= -1.35
b Now the P value is
As z comes -1.35
So, there is a two tailed p value i.e. 0.177016
8-7x- x2 x+5/х+8 9x -9
Every step on how you got your answer.
Answer:11
Step-by-step explanation:
An observation tower is 75 m high. A support wire is attached to the tower 20 m from the top. If the support wire and the ground form an angle of 46 degrees, what is the length of the support wire, to the nearest thousandth?
Answer: 76.46 m
Step-by-step explanation:
Height of tower = 75m
Support wire 20 m from top
Angle formed (α) = 46°
Using Pythagoras :
Sinα = opposite / hypotenus
Height used = height of tower - 20 m from top
Height = opposite = (75 - 20)m = 55m
Hypotenus = Length of support wire
Sin 46 = 55m / hypotenus
Hypotenus * sin 46 = 55
0.71934 * hypotenus = 55
Hypotenus = 55/0.71934
Hypotenus = 76.458976
Hence, Lenght of support wire = 76.46 m
4
10 x
15
Multiply. Write your answer as a fraction in simplistic forms.
Answer:
6
Step-by-step explanation:
4/10 x 15 = 60/10
60/10 = 6
If the measure of each interior angle of a regular polygon is 168, find the number of sides in the polygon.
Answer:30 sides
Step-by-step explanation:your welcome
Please help me and I’ll give you brainiest make sure to explain :) !!
Thanks!!!!
Answer:
{y,x}={1,3}
Step-by-step explanation:
[1] y - 2x/3 = -1
[2] y + x = 4
// To remove fractions, multiply equations by their respective LCD
Multiply equation [1] by 3
// Equations now take the shape:
[1] 3y - 2x = -3
[2] y + x = 4
Helppppppppppppppppppp will hive brainliest!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
the constant propertianr would be 4!
Step-by-step explanation:
1 times 4 is 4
2 times 4 is 8
3 times 4 is 12
4 times 4 is 16
After all of the start-up costs, a company starts with $100 and makes $0.75 on each unit sold. Write a linear equation in slope intercept form that models this situation using P for profit and N for number of units sold.
A). p=100n+75
B). n=100p+75
C). p=0.75n+100
D). n=0.75p+100
If you guys could help me I would greatly appreciate it!!
The answer would most likely be c because you multiply 0.75 by the amount of units sold and find out the profit after adding it.
Hope this helps! :)
conside the system of equations.
X=8-2y
X+3y=12
Answer: Solved using the subsitution method.
Step-by-step explanation:
(X,Y) = (0,4)
So the answer is 0 since X = 0 !
Hope it helped :)
Rewrite the equation 3r - 6 = 39 by factoring the side that contains the variable r. Pls help
Answer:
3r=45 or R= 45/3
Step-by-step explanation:
Use Cymath
what is the product of 20 hundredths and 65 thousandths
Answer:
0.013
Step-by-step explanation:
20 hundredths = 0.2
65 thousandths = 0.065
0.2 × 0.065 = 0.013
Ali has x cards Belinda has twice as many cards than Ali, Charlie has 5 more cards than Ali, They have a total of 33 cards. show that 4x+5=33 work out the number of cards Ali has.
PLEASE HELL 1. Convert the given angle measure from radians to degrees: 11pie/4
45
495
180°
1980°
Answer:
495 degrees is the answer
There are 39 students in a class.
10 of the students are female.Find the percentage of the class that are female.
Give your answer to the nearest percent
Answer:
26%
Step-by-step explanation:
10/39 + 100% = 25.64102%
nearest percent, 26%
The sim of five times a number and four is equal to negative seven what is the number
Please help ASAP (algebra)
if 3/4 = x/8, then x is equal to
Answer:
6
Step-by-step explanation:
Answer:
6. i have this question in my online class
Step-by-step explanation:
hope this helps!
ik im late but- the pointssss
How to determine the remainder in dividing the polynomial P(x) by a divisor x-1?
Answer:
Calculate P(1)
Step-by-step explanation:
Given
P(x)
[tex]Divisor = x - 1[/tex]
Required
How to determine the remainder
First, you equate the divisor to 0 to solve for x
i.e.
[tex]x - 1 = 0[/tex]
[tex]x = 1[/tex]
Next, substitute 1 for x in P(x)
Then solve for P(1)
Take for instance;
If
[tex]P(x) = x^3 - x^2 - 1[/tex]
Substitute 1 for x
[tex]P(1) = 1^3 - 1^2 - 1[/tex]
[tex]P(1) = 1 - 1 - 1[/tex]
[tex]P(1) = - 1[/tex]
Hence, the remainder is -1
a video store membership costs $21 and members pay $2.50 for each video. if one one member paid $46 for their membership and their videos how many videos did they buy? PLEASE show your work
Answer:
46 / 5 + 9.2 so 9 videos
Step-by-step explanation:
Answer:
10 movies.
Step-by-step explanation:
46-21=25.
25 divided by 2.5 = 10
can you help me please
Answer:
5.
A) 1:2
6.
D) 9 min
Plz make brainlest, THESE ARE THE CORRECT ANSWERRRRSS!
Step-by-step explanation:
5. 12:24
reduce to get 1:2
6. 225/25= 9 min
48/42 = 16/14
a
proportional
b
non-proportional
Answer:
proportional
Step-by-step explanation:
proportional
48/3 = 16
42/3 = 14
If m<3=105, what is the m<21 that will prove that lines P and R are parallel. please help
Answer: 75°
have: m∠3 = m∠11 = m∠22 = 105°
but m∠22 + m∠21 = 180°
=> m∠21 = 180° - 105° = 75°
Step-by-step explanation:
A Salt Marsh Harvest Mouse ran a 360 centimeter straight course race in 9 seconds. How fast did it run?
Answer: 40 Centimeters per second
Step-by-step explanation:
360/9 = 40
RAM, HARI and SHYAM INVEST A SUM OF RS. 15000 ON A BUSINESS IN THE RATIO OF 4 : 5. FIND EACH OF THEIR INVESTMENT.
(STEP BY STEP PLZ) (HOPE U HAVE FUN SOLVING THIS RIDDLE)
Answer:
hey iif ram hari n shyam invest then the ratio shall be like x:y:z but the qstn isnot . ram:hari:shyam =? it can't be 4:5 only it might be 4:5:?
Answer:
see the photo please
Step-by-step explanatio
For the following function (a) tell whether it would open up or down on a graph, (b) find the vertex, and (c) find the axis of symmetry.
Answer:
a: down b: (1.25, 0.125) c: x=1.25
Step-by-step explanation:
Use a graphing calculator to see the graph and determine answers.
1. 1. Un botellón de agua se ofrece al público en vasos de 0,12 litros. Si del botellón se pueden servir 45 vasos, la cantidad de agua que cabe en el botellón esUn botellón de agua se ofrece al público en vasos de 0,12 litros. Si del botellón se pueden servir 45 vasos, la cantidad de agua que cabe en el botellón es: a) 54 litros b) 12 litros c) 5,4 litros d) 0,54 litros
Answer:
c) 5,4 litros
Step-by-step explanation:
Un vaso de agua contiene 0,12 litros de agua.
Una botella contiene 45 vasos de agua.
El volumen completo de agua de la botella se distribuye en 45 vasos por igual.
Entonces,
[tex]0.12\ \text{L}\times 45=5.4\ \text{L}[/tex]
Por lo tanto, la cantidad de agua en la botella que se puede usar para servir 45 vasos es de 5.4 L.
please so one answer need help:)
Andre and Priyabare tracking the number of steps they walk. Andre records that he can walk 6000 steps in 50 minutes. Priya writes the equation y=118x, where y is the number of steps and x is the number of minutes she walks, to describe her step rate. This week, Andre and Priya each walk for a total of 5 hours. Who walks more step?How many more?
Answer:
Andre walks 600 more steps than Priyabare
Step-by-step explanation:
Andre is 36,000 minutes while Priyabare walks 35,400. 1st you get the 6000 steps in 50 minutes from Andre and divide the 6000 by 50 to get 120 which you then multiply by 300 (minutes which is 5 hours) and get 36000. Then for Priyabare you multiply 118 by 300 as well (Again because equals 5 hours) and you will get 35,400 meaning Andre walked 600 more steps if you subtract the two.
Yellow rectangles= X Yellow squares = positive Red squares = negative
1) 5x – 3 = 7
2) 3x + 4 = -2
3) 3x + 6 = -9
4) 2x - 4 = 14
5) 3x – 4 = 8
6) 4x + 7 = 11
Answer:
that is a great question, could u explain more? im serious
Step-by-step explanation:
Answer:
The large squares represent X squared, and had two sides, blue and red, to determine whether it is positive or negative (blue = positive, red = negative). There is also the long rectangles that represent X, with the positive side being green and the negative red. The side length of X is the same side length of X squared, which makes sense because X multiplied by X equals X squared. The smallest square pieces represent the number 1. The colours are yellow for positive and red for negative. These are the basic pieces used in algebra tiles. Hope this helps
Step-by-step explanation:
Triangle ABC is shown with its inscribed circle drawn. The measure of angle ECF is 72 degrees. What is the measure of angle EGF? Explain or show your reasoning.
Answer:
108°
Step-by-step explanation:
CB and CA are tangents to the circle at points E and F respectively. GE and GF are radii of the circle with center G.
Since, radii of a circle are perpendicular to the tangents at the point of contacts.
[tex] \therefore GE \perp CB\\\\
\& \:GF \perp CA\\\\
m\angle GEC =m\angle GFC = 90\degree \\\\[/tex]
In quadrilateral GECF, by interior angle sum property:
[tex] m\angle C + m\angle E + m\angle F + m\angle EGF = 360\degree \\\\
\therefore 72\degree + 90\degree + 90\degree + m\angle EGF = 360\degree \\\\
\therefore 252\degree + m\angle EGF = 360\degree \\\\
\therefore m\angle EGF = 360\degree - 252\degree \\\\
\therefore m\angle EGF = 108\degree \\[/tex]
Answer:
108°Step-by-step explanation:
Since GE ⊥ BC and GF ⊥ AC,∠GEC = ∠GFC = 90°Sum of 4 angles is 360°, therefore:
∠ECF + ∠EGF = 360° - 180°∠EGF = 180° - 72° ∠EGF = 108°6th grade math i mark as brainliest
Answer:
i think 4 is correct
Step-by-step explanation:
Simplify (-5)^4•[(-5)²]5• (-5)^4
Answer:
[tex](-5)^{4}.[(-5)^{2}]^{5}.(-5)^{4}=(-5)^{4}.(-5)^{10}.(-5)^{4}=(-5)^{18}[/tex]
Step-by-step explanation:
Answer:
(-5)^18
Step-by-step explanation:
The equation will look like this after you simplify[(-5)^2)^5]
(-5)^4 x (-5)^10 x (-5)^4
Now you add up all the exponents and keep it the same:
(-5)^18
Hope this helps!