Please just give me the answer
Answer:
x = 4
Step-by-step explanation:
We use the formula:
a² + b² = c²
x² + 3² = 5²
x² + 9 = 25
x² = 16
[tex]\sqrt{x^2} =\sqrt{16}[/tex]
x = 4
(1) Is climate change causing more severe storms? In a 2017 pre-Hurricane Irma
survey, 486 out of 1,080 adults answered in the affirmative. In a 2017 post-
Hurricane Irma survey, 546 out of 1,050 answered affirmatively. Establish a 90%
Confidence interval estimate of the difference (pre- minus post-hurricane) between
the proportions of adults pre-Hurricane Irma and post-Hurricane Irma who believe
climate change is causing more severe storms.
Answer:
90% Confidence Interval for difference in Proportion = (-0.106, -0.034)
Step-by-step explanation:
The formula for difference in proportions is given as:
p1 - p2 ± z × √p1(1 - p1)/n1 + p2(1 - p2)/n2
p = x/n
In a 2017 pre-Hurricane Irma
survey, 486 out of 1,080 adults answered in the affirmative.
x1 = 486
n1 = 1080
p1 = 486/1080 = 0.45
In a 2017 post- Hurricane Irma survey, 546 out of 1,050 answered affirmatively.
x2 = 546
n2 = 1050
p2 = 546/1050 = 0.52
Z score for 90% confidence interval = 1.645
Confidence Interval
=0.45 - 0.52 ± 1.645 × √0.45 (1 - 0.45)/1080 + 0.52(1 - 0.52)/1050
= -0.07 ± 1.645 × √0.0002291667 + 0.0002377143
=-0.07 ± 1.645 × √(0.000466881)
= -0.07 ± 1.645 × 0.0216074293
= -0.07 ± 0.0355442212
Confidence Interval
-0.07 - 0.0355442212
= 0.1055442212
Approximately = -0.106
-0.07 + 0.0355442212
= -0.0344557788
Approximately = -0.034
Therefore, 90% Confidence Interval for difference in Proportion = (-0.106, -0.034)
A triangle is shown.
300
44 in.
What is the length, in inches (in.), of side a?
in.
pls help!! TIMED!!!!!!
Answer:
dont know what to do
Step-by-step explanation:
PLEASE HELP (30 points)
(I will report fake answers or links)
Solve each equation by completing the square.If necessary,round to the nearest hundredth.
10.) b2+10b=75
11.) y2-18y=63
12.) n2-20n=-75
13.) a2+16a=-15
14.) t2+8t-9=0
15.) h2-12h-9=0
Answer:
10) b = 6.25
11) y = -3.94
12) n = 4.16 repeating
13) a = -0.83 repeating
14) t = 0.9
15) h = -0.9
Hope this helps!
Does anyone know this will give the brainliest.
Answer:
D
Step-by-step explanation:
i think because the range is 2 because it went up to plots and the domain stay in a flat line
Evaluate.
5^3 − (64/8) + 10^2
Enter your answer in the box.
Answer:
210
Step-by-step explanation:
Answer:
217
Step-by-step explanation:
5³ − (64/8) + 10²=125-8+100=217
A candy company can sell fruit gums in rectangular boxes or in cylindrical tubes. Each box is 8 cm by 3 cm by 7 cm. Each cylinder has radius 3 cm and height 6 cm. The company wants the packaging that uses less material. Which packaging should the company choose? Justify your choice.
Answer:
i. The company should use the cylindrical tubes.
ii. This is because the surface area of the cylindrical tubes, A' = 169.65 cm² is less than the surface area of the rectangular box, A = 202 cm²
Step-by-step explanation:
i, Which packaging should the company choose?
The packaging that uses less material is the one with the least surface area. So, we find the surface area of each material.
For the rectangular box, the surface area, A = 2(lb + lh + bh) where l = length, b = breadth and h = height. Since each box is 8 cm by 3 cm by 7 cm,l = 8 cm, b = 3cm and h = 7cm.
So, ,A = 2(lb + lh + bh)
,A = 2( 8 cm × 3 cm + 8 cm × 7 cm + 3 cm × 7cm)
A = 2(24cm + 56 cm + 21cm)
A = 2(101 cm²)
A = 202 cm²
For the cylindrical tube, the surface area, A' = 2πr(r + h) where r = radius of cylinder and h = height of cylinder.
Since each cylinder has radius 3 cm and height 6 cm, r = 3cm and h = 6 cm.
So, A' = 2πr(r + h)
A' = 2π(3 cm)(3 cm + 6cm)
A' = (6π cm)(9 cm)
A' = 54π cm²
A' = 169.65 cm²
Since the surface area of the cylindrical tubes, A' = 169.65 cm² is less than the surface area of the rectangular box, A = 202 cm²
The company should use the cylindrical tubes.
ii. Justify your choice.
This is because the surface area of the cylindrical tubes, A' = 169.65 cm² is less than the surface area of the rectangular box, A = 202 cm²
Alexis traveled 2.3 km to visit her purchase groceries at the supermarket she travels another 600m to get some vitamin C at the pharmacy how much how many meters did Alex to travel in Total?
Answer:
2.9 km
Step-by-step explanation:
Just add up the two distances: 2.3 km + 600 m = 2.3 km + 0.6 km = 2.9 km total
16. Is 4/9 a terminating or repeating decimal?
Terminating Decimal
Repeating Decimal
Evaluate the expression for x=-2 and y=9.
xy + y =
Answer:
-18 + 9 = -9
Step-by-step explanation:
-2 x 9 = -18
Determine if the given value is a solution of the inequality. Show your work.
7 – 2y > 3y + 13; y = -1
Given:
[tex]7-2y>3y+13[/tex]
To find:
The whether the value [tex]y=-1[/tex] is a solution of the given inequality or not.
Solution:
We have,
[tex]7-2y>3y+13[/tex]
It can be rewritten as
[tex]-2y-3y>13-7[/tex]
[tex]-5y>6[/tex]
Divide both sides by -5 and change the inequality sign.
[tex]y<\dfrac{6}{-5}[/tex]
[tex]y<-1.2[/tex]
All the value of y less -1.2 are the solutions of the given inequality but -1 is greater than -1.2.
[tex]-1>-1.2[/tex]
Therefore, [tex]y=-1[/tex] is not a solution of the given inequality.
Which of these serves as a way to help get rid of waste and is most commonly found in animal cells not in plant cells?
A. a membrane
B. a nucleus
C. chloroplasts
D. lysosomes
What is the following difference?
11 inverse 45 -4 inverse 5
Linda used 36 m of fencing to enclose a rectangular section of her back yard .
What might the area of the enclosed section be? Give three different answers.
Answer:
so you'll take width (or w) and times it by Height (or h)
50 x 100 = 5000 = example
I hope this helps...
Step-by-step explanation:
I NEED THIS ASAP!!
The average length of a female dolphin is about 171 inches (in). What is this length in feet (ft) and inches (in)?
Answer:
14.25ft
171 in
Step-by-step explanation:
Use the data for the books each class donated for a book drive.
Books Donated
28
15
40
45
27
19
50
36
42
37
21
25
Find the Median.
Answer:
rearrange in ascending order
15,19,21,25,27,28,36,37,40,42,45,50
using formula (n\2)th + (n/2)+1)th/2
(12/2)th + (12/2)+1)th/2
6th +7th/ 2
the 6th number=28and the 7th number=36
28+36/2
64/2
32
median =32
if you roll two standard die what is the probability that they will both be a three?
Answer:
2/6 or 1/3 (simplified)
Step-by-step explanation:
each dice has 6 sides and there is one 3 on each die, so you would add 1/6 + 1/6 to get 2/6 which simplifies to 1/3
Answer:
2/12 or 1/6
Step-by-step explanation:
Roscoe is locked outside his house.The only unlocked window is on the 2nd floor which is 24 feet from the ground. He will have to borrow a ladder from the neighbors house and place it 7 feet from the house. What length of ladder does he need to reach the 2nd floor safely
Answer:
25 feets
Step-by-step explanation:
The scenario above can be modeled and solved Using Pythagoras :
Height to second floor = 24 feets
Horizontal Distance between foot of ladder and wall = 7 feets
Let length of ladder = x
The lengtb of ladder here is the hypotenus
Recall:
Hypotenus = sqrt(opposite² + adjacent²)
Hence,
x = sqrt(24² + 7²)
x = sqrt(576 + 49)
x = sqrt(625)
x = 25
Hence, length of ladder = 25 feets
Please help I’ll mark brainliest
Answer:
-2-24i
Step-by-step explanation:
vector addition
let x be the value without the vector I
x+7+5=10
x=10-12
x=-2
let y be the value with the vector I
y-3+9+13= -5
y +19= -5
y= -24
Can someone plzzz helpp mesee
Answer:
104
Step-by-step explanation:
sso if you use the angle right it looks just right
Answer:
[tex] m\angle EFG = 52\degree[/tex]
Step-by-step explanation:
By inscribed angle theorem:
[tex] m\angle EFG =\frac{1}{2} m\angle EDG[/tex]
[tex] (x+51)\degree =\frac{1}{2}(10x +94)\degree [/tex]
[tex] (x+51)\degree =\frac{1}{2}\times 2(5x +47)\degree [/tex]
[tex] (x+51)\degree =(5x +47)\degree [/tex]
[tex] x+51 =5x +47 [/tex]
[tex] x+51 - 47=5x - x[/tex]
[tex] 4=4x[/tex]
[tex] x=\frac{4}{4}[/tex]
[tex] x=1[/tex]
[tex] \because m\angle EFG = (x+51)\degree[/tex]
[tex]\therefore m\angle EFG = (1+51)\degree[/tex]
(plug x = 1)
[tex] \therefore m\angle EFG = 52\degree[/tex]
Pls help me I’m failing lolz :)
I don’t know if this is correct !!!!!!! Please answer correctly !!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!
Answer:
It is correct
Del total de alumnos de una escuela de Medellín, la mitad nació en Medellín, un tercio en otros pueblos de Antioquia y los restantes en otros países. Si son 83 los alumnos extranjeros, el número de alumnos que nacieron en Medellín es: A. 498 B. 166 C. 250 D. 249
Answer:
OK
Step-by-step explanation:
What language us That
Sam has a loan for $1200 at a rate of 9% annually. How much interest will he pay in 5 years? A) $54.40 B) $108.00 Eliminate C) $540.00 D) $1740.00
Answer:
c
Step-by-step explanation:
interest = loan x interest x time
1200 x 0.09 x 5 = $540
during the fall a pumpkin patch advertises four pumpkin for $11.oo which equation below respresents this proportional relationship
Answer:
11x4=44
Step-by-step explanation:
someone help with this math question!! brainly if correct
Answer:
option 1) tan (46) = 17/x
Step-by-step explanation:
what is the location of point B ?
Answer:
its b
Step-by-step explanation:
(9,-2)
Answer:
(9, -2)
Hope that helps!
Step-by-step explanation:
find the exact perimeter, please help :)
I hope this helps you
find trapezoid sides from right triangle
base is 2 unit and the height is 6 unit
let's find hypothenus(trapezoid side)=x
x^2=2^2+6^2=40
x=2 square root of 10
let's sum of the trapezoid sides
2x+2 bases
4 square root of 10+(7unit+3unit)
4 square root of 10 +10
(Repost because I only got bots last time and I really need help) I’m so lost and we didn’t talk about this at all in my class, please help
The volumes of two similar solids are 512cm^3 and 2,197cm^3. If the smaller solid has a surface area is 960cm^2, find the surface area of the larger solid.
PART I: find the similarity ratio by taking the cube root of each volume. Show your work.
PART II: Use your answer from Part I to find the ratio of the surface areas. Show your work.
PART III: Set up a proportion and solve to find the surface area of a larger solid.
Answer:
2535 cm²
Step-by-step explanation:
Part 1
Cube root the ratio to find the length factor as volume factor = length factor³
∛512 : ∛2197 = 8 : 13
Part 2
Square the ration as area factor = length factor²
8² : 13² = 64 : 169
Part 3
Apply the ratio
64 : 169
960 / 64 = 15
15 x 169 = 2535