Problem 11
Answer: 339 square meters---------------
Work Shown:
The surface area of a 3D sphere is 4pi*r^2. So a hemisphere has surface area 2pi*r^2 since we cut the surface area in half.
Plug in r = 6 (half of the diameter 12) and we get 2pi*r^2 = 2pi*6^2 = 72pi
Now consider the circle with radius r = 6. Its area is pi*r^2 = pi*6^2 = 36pi
Add the two areas and we get 72pi+36pi = 108pi
Lastly, use your calculator to get 108pi = 108*3.1415926535898 = 339.292006587699 which rounds to 339
======================================
Problem 12
Answer: C) 19.5 mm---------------
Explanation:
Look at where the "0" in the bottom sliding portion lines up with the number scale above. That "0" is between 19 and 20 mm. So you could argue that 19.2 and 19.5 are both valid answers, but I think 19.5 is the better answer since the tickmark seems to be right in the middle (more or less).
Step-by-step explanation:
surface area of hemisphere =3πr²
=3*3.14(6)²
=339.12m²
diameter of pipe= 19.5mm
what is equivalent to 2/3 - (-3/4) + 5/4
Answer:
Simplify the expression.
Exact Form:
8
3
Decimal Form:
2.
¯
6
Mixed Number Form:
2
2
3
Step-by-step explanation:
how many solutions does
-10x+x=-9x have
A) one solution
B) two solutions
C) No solutions
D) infinite solutions
Answer:
I am not sure but i think B so two solutions
please help with this its timed
Answer:
C
Step-by-step explanation:
Answer:
C because 340 represents the ticket sales . It wouldnt be d because it 2a and 5c when it should be 5A for the adults and 2C for the children
Step-by-step explanation:
can someone help me on figuring out these problems and what are the answers. please and thank you !
Do number 13 please I beggg
Answer:
{ }, {4}, {6}, {7}, {4, 6} {4, 7}, {6, 7}, {4, 6, 7}
Step-by-step explanation:
The empty set is a subset of every set.
Also, a set is a subset of itself.
S = {4, 6}
T = {6, 7}
S U T = {4, 6, 7}
Subsets of S U T: { }, {4}, {6}, {7}, {4, 6} {4, 7}, {6, 7}, {4, 6, 7}
in triangle MNP, the measure of angle M is 70° and the measure of angle N is 80°. which is the shortest angle?
Answer:
the shortest angle is P which is 30
Step-by-step explanation:
180-70-80= 30
Solve for x
3x-30=4
HELPPPPPPPPPPP
Answer:
x=34/3
Step-by-step explanation:
Help plz:)!!!!!!!!!!!!
Answer: A
Step-by-step explanation: because the slope is positive 1/3 on the line
p-value example 2 in lab manual hypothesis: sunflowers (helianthus annuus) will be more common in burned areas than in unburned areas. mean number per m2 burned
HELP......................! !
Answer:
-9 7/15
Step-by-step explanation:
When factoring an algebraic expression, what property are we "undoing"?
Answer:
The Distributive Property
Mackenzie and Ariana both found pillows on sale. Mackenzie found a sale that was 4 pillows for $90.00. Ariana found a sale that was 2 pillows for $47.00. Who found the best deal? Explain your reasoning
I think mackenzie cuz she got 4 pillows
Answer:
Mackenzie found a better deal because each of her pillows were 22.50. And Ariana's pillows costed 23.5 each.
A hairstylist charges $15 for an adult haircut at nine dollars for a child haircut she wants to earn at least $360 and cut a maximum of 30 haircut this week the graph represents the hairstylist constraints
Answer:10 adult and 20 children
Step-by-step explanation:
The two inequalities for the given situation are x+y>30 and 15x+9y≤360.
Given that, a hairstylist charges $15 for an adult haircut at nine dollars for a child haircut she wants to earn at least $360.
What is a inequality?Inequalities are the mathematical expressions in which both sides are not equal. In inequality, unlike in equations, we compare two values. The equal sign in between is replaced by less than (or less than or equal to), greater than (or greater than or equal to), or not equal to sign.
Let the number of adults be x and the number of child be y.
So, x+y>30
Now, 15x+9y≤360
⇒ 3(5x+3y)≤360
⇒ (5x+3y)≤120
From the graph we can see that, two graphs intersecting at (15, 15)
Therefore, the two inequalities for the given situation are x+y>30 and 15x+9y≤360.
To learn more about the inequality visit:
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A spherical ball has a diameter of 8 inches. The ball has a slow leak in which the air escapes at the rate of 2.5 inches per second. How long would it take for the ball to deflate? Round to the nearest tenth.
Answer:
107.2 seconds
Step-by-step explanation:
Step one:
given
the diameter of ball 8 inches
radius= 8/2 = 4 in
The volume of the ball
[tex]v=4/3 \pi r^3[/tex]
[tex]v= 4/3*3.142*4^3\\\\v= 4/3*3.142*64\\\\v= 804.35/3\\\\v=268.12 in^3[/tex]
Step two:
we know that
rate= quantity/time
rate= 2.4 in per second
quantity= 268.12
time=?
time= quantity/rate
time= 268.12/2.5
time= 107.2 seconds
What is the domain and range of the relation shown in the table?
x y
0 3
−1 4
4 2
−1 7
x y
0 3
−1 4
4 2
−1 7
domain:{−1,0,4}, range:{2,3,4,7}
domain:{x|x∈R}, range:{−1,0,4}
domain:{2,3,4,7}, range:{−1,0,4}
domain:{−1,0,4}, range:{y|y∈R}
find the value of 7w+9 given that -4w -4=4
can someone please help!! it would mean the world to me:) i fave finals tomorrow
Answer:
w= -1/3
Let's solve your equation step-by-step.
7w+9−4w−4=4
Step 1: Simplify both sides of the equation.
7w+9−4w−4=4
7w+9+−4w+−4=4
(7w+−4w)+(9+−4)=4(Combine Like Terms)
3w+5=4
3w+5=4
Step 2: Subtract 5 from both sides.
3w+5−5=4−5
3w=−1
Step 3: Divide both sides by 3.
3w/3=−1/3
w= −1/3
Answer:
w= −1/3
HOPE THIS HELPS <3333333
-Silver
In Woodinville the sales tax is 10%. What is the total cost including tax on a $28 purchase?
Answer:
$30.80
Step-by-step explanation:
10% of $28 is 2.80
add 28+2.80=30.80
1 whole and 1/4 - 8/10 show your work please
Answer:
9/20
Step-by-step explanation:
first you have to make 1 1/4 an improper fraction so since the denominator is 4 you add 4 to the numerator which is 1 so your fraction would be 5/4.
Second you make the denominators the same so you have to multiply them together. but since your multiplying the denominators you have to multiply the numerator as well. so for 5/4 you would multiply both the numerator and denominator by 10 so your fraction will now be 50/40. now you multiply 8/10 by 4 so your new fraction is now 32/40
Third you subtract. you only have to subtract the numerators so 50-32 is 18 so your answer is 18/40
Last you need to simplify the highest number you can divide both of them by is 2 so now you divide 18 by 2 which makes 9 then you divide 40 by 2 which is 20 so your answer is 9/20
Sorry i'm not the best at explaining things but i tried my best
Hope this helps you out and have a great day : )
Why is investing in product research an important part of the planned buying process?
Research enhances satisfaction
Research decreases satisfaction
Research is too time consuming
Research is only necessary for big purchases
Answer:
Step-by-step explanation:
Research decreases satisfaction
how many combinations of 3 letters can be made from the word oranges ? what is the probability that these three letters will all be consonants?
The number of all possible combinations of 3 letters can be made from the word 'oranges' = 35
The probability that the three letters will be consonants = 0.114
In this question, we have been given a word 'oranges'
We need to find the number of ways in which the letters of orange can be arranged.
Also, we need to find the probability that these three letters will all be consonants.
The number of letters in the word oranges = 7
So, n = 7
We need combinations of 3 letters.
so, r = 3
The number of all possible combinations of 3 letters would be,
^7C_3 = 7! / (7 - 3)! (3!)
^7C_3 = 35
The number of combinations of 3 letters = 35
We can observe that the consonants in the word 'oranges' are:
r, n, g, s
The number of consonants = 4
The combinations of 3 consonants would be,
^4C_3 = 4! / (4 - 3)! 3!
^4C_3 = 4
The required probability would be,
p = ^4C_3 / ^7C_3
p = 4 / 35
p = 0.114
Therefore, the number of all possible combinations of 3 letters can be made from the word 'oranges' = 35
the probability that the three letters will be consonants = 0.114
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·A long distance runner started on a course running at an average speed of 6
mph. One hour later, a second runner began the same course at an average
speed of 8 mph. How long after the second runner started will the second
runner overtake the first runner? I also need the work pls help!
Solve for v.
V - 32
4
10
Please help!:)
Write an explicit formula for each sequence.
3, 7, 11, 15, ...
Answer:
f(n)= f(1)+d(n-1)
Step-by-step explanation:
the aerithmetric explict formula is the one above, but im not sure what the question is asking, your difference is 4 btw
Write the slope-interest form of the equation that passes through (-2,6) with a slope of 3/2
Answer:
y = 3/2x+6
Step-by-step explanation:
Answer:
y = [tex]\frac{3}{2}[/tex]x + 9
Step-by-step explanation:
Slope-intercept form is y = mx + b. [tex]\frac{3}{2}[/tex] is the slope and 9 is the y-intercept.
Given the equation 12x – 6y = –36, identify the slope and y-intercept.
which of the following is equivalent to i³³?
1. i
2. -i
3. 1
4-1
Answer:
3
Step-by-step explanation:
Which shape are congruent to shape I in this graph
CAN SOMEONE PLEASE HELP ME ASAP ILL MARK BRAINLIST!!!!!
Answer:
a or b
Step-by-step explanation:
Answer:
B. 30
Step-by-step explanation:
3/4 = .75
120 * .75 = 90
Of those 90 students 1/3 wore sandals.
1/3 = approximately .33
90 * .33 = 29.7
Therefore, around 30 students wore jeans and sandals.
Hi can someone help me with this I’ll mark u as brainliest :)
Answer:
A: [tex]5^2[/tex] times [tex]5^2[/tex]
C: [tex]\frac{1}{5^-^4}[/tex]
Step-by-step explanation:
A:
[tex]5^2[/tex] × [tex]5^2[/tex]
[tex]=5^2^+^2[/tex]
[tex]=5^4[/tex]
C:
[tex]\frac{1}{5^-^4}[/tex]
[tex]=5^4[/tex]
Which of the following is equivalent to the complex number i^16?
Answer:
A
Step-by-step explanation
i = [tex]\sqrt{-1}[/tex]
i² = ([tex]\sqrt{-1}[/tex] )² = - 1
i³ = i² × i = - 1 × i = - i
[tex]i^{4}[/tex] = i² × i² = - 1 × - 1 = 1 , then
[tex]i^{16}[/tex]
= [tex](i^4)^{4}[/tex]
= [tex](1)^{4}[/tex]
= 1