Answer:
0.00004
Step-by-step explanation:
Given that:
n = 50
Number of options = 4 ; 1 is the correct answer
Hence ;
p = 1/4 = 0.25
Using normal approximation :
Mean (m) = np = 50 * 0. 25 = 12.5
Standard deviation (s) = √(n*p*q)
q = 1 - p = 1 - 0. 25 = 0.75
s = √(50*0.25*0.75) = 3.062
At least half the question :
Half the question = 1/2 * 50 = 25
P(X ≥ 25) = P(X ≥ 24.5)
(x - m) / s
P(X ≥ 24.5) = (24.5 - 12.5) / 3.062
= 12 / 3.062
= 3.919
P(Z ≥ 3.919) = 0.00004 (Z probability calculator)
Hi, anyone know this? ^^ ill give brainliest if right
Answer:
9/16
Step-by-step explanation:
3/4 x 3/4 = 9/16
Steph owed her mother $84. She earned $6.25 for raking the leaves each week and 3.25 for unloading the dishwasher each week, how many weeks would it take her to pay her mother back?
Answer: About 10 weeks
Step-by-step explanation:
Step 1- 6.25 + 3.25 = 9.50
Step 2- 84 - 9.50 = 74.50
Step 3- 74.50 divide by 7
Step 4- Answer 10. 64285 and so on
can someone help me with this?
The radius of circle A is half of the radius of circle B. What is the area of circle A
A) 1/2 the area of circle B
B) 1/4 the area of circle of B
C) pi/4 the area of circle of B
D)pi/2 the area of circle B
E) square root of 1/pi the area of circle B
The sum of four times Juanita’s age and 16 is 100. Juanita is j years old. How old is Juanita?
Answer:
Step-by-step explanation:
Juanita is 36 years old.
100 - 16 x 4
36
Hope this helps!
Need help please don’t understand
Answer:
7x+20
Step-by-step explanation:
To simplify you mainly just try and combine the terms
First step is to distribute the 2 that is in front of "(5+3x)"
the way you do this is multiply everything inside the parantheses by 2
(5•2+3x•2) = 10+6x
put that into the original equation and now we just have the easy part
10+6x+x+10
combine alike terms
6x+x=7x 10+10=20
7x+20 is that equation simplified
Answer:
7x+20
Step-by-step explanation:
2*5+2(3x)+x+10
10+2(3x)+x+10
10+6x+x+10
6x+x+20
7x+20
what are the missing angles?
Answer:
To determine to measure of the unknown angle
Step-by-step explanation:
If two angles are given, add them together and then subtract from 180°. If two angles are the same and unknown, subtract the known angle from 180° and then divide by 2
"To determine to measure of the unknown angle, be sure to use the total sum of 180°. If two angles are given, add them together and then subtract from 180°. If two angles are the same and unknown, subtract the known angle from 180° and then divide by 2."
Please help! Will mark you brainiest
7. You toss two dimes 24 times and record the results. The table shows the frequency and the experimental probability of each outcome. Suppose you tossed the dimes 120 times. How many times would you expect an outcome of "tail and tail?" *
help please
Answer:
i need this answer
Step-by-step explanation:
!!!Factor each completely, please
do as many as you can please
1) x²+15x+56
2) 12x²-44x+77
3) 6x+21
4) 18x³-2x+27x-3
5) 32x³-4
6) 8x²+10x-25
7) x²+5x-36
8) 2x²+20x+48
1. (x + 7) (x + 8)
2. - (20x - 77)
3. 3 (2x +7)
4. 79x - 3
5. 4 (24x -1)
6. (4x - 5) (2x + 5)
7. (x-4) (x + 9)
8. 2 (x + 4) (x + 6)
6.3 x 10 to the power of -8
Answer: the answer is 6.3e-8
Step-by-step explanation:
Need help please i dont get it
Answer:
>
Step-by-step explanation:
-27/80 > -73/80
If you make a number line they are both in the negatives. If they are both in the negatives then whatever one is closer to 0 is greater.
Answer:
>
Step-by-step explanation:
even tho 73 looks like a higher number when u add the negatives to the front whatever number looks like it is smaller is the higher number.
Pls help it's due soon pls dont waste my points i have so less :(
Answer:
Cheetah ran for 3 hours.
Antelope ran for 5 hours.
Lion ran for 6 hours.
Elephant ran for 10 hours.
The table and graph show the miles driven and gas used for two scooters
How many miles does scooter A get for one gallon of gas
Answer:
Scooter A gets 75 miles/gallon.
Step-by-step explanation:
150 / 2 = 75 miles/gallon
what is the answer to 6x+18+8x=180?
Answer:
=81/7
Step-by-step explanation:
Simplifying
6X + 18 + 8x + -2 = 180
Reorder the terms:
18 + -2 + 6X + 8x = 180
Combine like terms: 18 + -2 = 16
16 + 6X + 8x = 180
Solving
16 + 6X + 8x = 180
Solving for variable 'X'.
Move all terms containing X to the left, all other terms to the right.
Add '-16' to each side of the equation.
16 + 6X + -16 + 8x = 180 + -16
Reorder the terms:
16 + -16 + 6X + 8x = 180 + -16
Combine like terms: 16 + -16 = 0
0 + 6X + 8x = 180 + -16
6X + 8x = 180 + -16
Combine like terms: 180 + -16 = 164
6X + 8x = 164
Add '-8x' to each side of the equation.
6X + 8x + -8x = 164 + -8x
Combine like terms: 8x + -8x = 0
6X + 0 = 164 + -8x
6X = 164 + -8x
Divide each side by '6'.
X = 27.33333333 + -1.333333333x
Simplifying
X = 27.33333333 + -1.333333333x
help djeifjguikldcfhirdklfjrughenffufkfjeropf
me UmU
Answer:
the slope is 3
Step-by-step explanation:
its rise over run it goes up three and moves to the right one so 3/1=3
Which expression is equivalent to
Square root of 80 ?
Answer:
4i√5
Step-by-step explanation:
What is equivalent to
4x+18xx-3-4x
Answer:
18x-3
Step-by-step explanation:
if the question is 4x+18x-3-4x,first callect like terms 4x+18x-4X-3 = 18x-3
Really need help emergency thanks if you help
Answer:D because you divide it bu a common factor
Step-by-step explanation:
The school that Ted goes to is selling tickets to a choral performance. On the first day of ticket sales the school sold 7 adult tickets and 8 child tickets for a total of $168. The school took in $294 on the second day by selling 14 adult tickets and 13 child tickets. Find the price of an adult ticket AND the price of a child ticket.
Answer:
Adult= $24
child= $21
Step-by-step explanation:
first let's create an equation for each one.
Day 1: 7x+8y=168
day 2: 14x+13y=294
By doing so we can either graph and get the points for x,y or we can substitute each (x=0) (y=0) and solve manually.
x-int.= (24,0)
y-int.=(0,21)
8+x=x
what is x? i need help please. will mark brainliest!
Answer:
It has no solutions
Step-by-step explanation:
Rearrange the terms
[tex]8+x=x\\x + 8 =x[/tex]
Subtract 8 from both sides
[tex]x + 8 - 8=x-8[/tex]
Simplify
[tex]x = x-8[/tex]
Subtract x from both sides
[tex]x - x = x - 8 - x[/tex]
Simplify
[tex]0 = -8[/tex]
The input is a contradiction: it has no solutions
Find the slope? Work on how you got answer please
i really need help plz help meeeeeeeeee
Answer:
10√2
Step-by-step explanation:
√200=√2*100=10√2
Ans.is 10√2
the topic is Surds in math
Damon is buying meat by the pound at the deli. For every 5 pounds of meat he buys, he pays $8. What is the cost, per pound, for the meat?
Answer:
$1.60 per pound
Step-by-step explanation:
please help me!! PLEASE!!
Answer:
it is d
Step-by-step explanation:
because the bottom would have to be on the input side a 4
D
hope it helps, i tried the best i could
Thats it none if my questions are being answered so I am going to give 30 points
Answer:
nonproportional
Step-by-step explanation:
The line does not pass through the origin (0,0)
Augustsky18; you there?????
I lost my other account.
NO ONE ELSE ANSWER THIS
Hey what happened? I was worried about you.
Kaelyn has some yarn that she wants to use to make hats and scarves. Each hat uses 0.20.20, point, 2 kilograms of yarn and each scarf uses 0.10.10, point, 1 kilograms of yarn. Kaelyn wants to make 333 times as many scarves as hats and use 555 kilograms of yarn. Let hhh be the number of hats Kaelyn makes and sss be the number of scarves she makes. Which system of equations represents this situation?
Answer:
s = 3h
0.1s + 0.2h = 5
h = 10
s = 30
Step-by-step explanation:
Given that :
Hat :
0.2kg of yarn
Let Number of hats = h
Kg of yarn used for hat = 0.2 * h = 0.2h
Scarf:
0.1 kg of yarn
Number of scarves (s) = s
Kg of yarn used for scarf = 0.1 * s = 0.1s
Total kg of yarn used = 5 kg
Number of Scarf = 3 times number of hats :
s = 3h - - (1)
0.1s + 0.2h = 5 - - (2)
From 1:
0.1(3h) + 0.2h = 5
0.3h + 0.2h = 5
0.5h = 5
h = 10
s = 3h
s = 3(10) = 30
Breanna made a scale drawing of her bedroom in order to arrange her
furniture. She used a scale of 1/2 inch = 1 foot. Her bed is 4 1/4 feet by 6
feet. What scale dimensions represent her bed?
Answer:
multiple both the numbers 2 times then add it together
Step-by-step explanation:
Solve for x:
−30=5(x+1)
