Answer:
what the????????..........
Urgent please help, I will truly be grateful
Answer:
I can barley see it but i think i know what to do.
Step-by-step explanation:
First i have to write down on a piece of paper:D
PLEASE HELP ASAP
Factor 3x+6y-9z
What is negative 6/11 plus negative 3/11?
Answer:
-0.81818181818
Step-by-step explanation:
Answer:
-9/11
Step-by-step explanation:
Using the order of operations, what should be done first to evaluate (-4) +6-(-3-4) (2) - 5?
VX
© Subtract 5 from 2.
Divide 6 by-3.
0 Add-3 and 4
O Multiply 4 and 2
Answer:
The answer is Add -3 and 4 should be done first
Question... The leader of a city crime watch team sends out a survey to her neighbors asking them to vote on the best time to patrol the city to watch for criminal acts. Describe how the design of the survey leads to bias. (4 points)
Options...
A nonresponse error was made in this design. This type of sampling only represents the city and not the entire county population.
A nonresponse error was made in this design. This type of sampling only represents the neighborhood with the worst crime and not the entire city population.
A convenience sample error was made in this design. This type of sampling only represents the neighborhood with the least crime and not the entire city population.
A convenience sample error was made in this design. This type of sampling is only representative of one neighborhood and not the entire city population.
There are no potential areas of bias.
Answer:
(c) A convenience sample error was made in this design. This type of sampling is only representative of one neighborhood and not the entire city population.
At an angle of elevation 610
captain on a ship noticed a person on the top of a cliff waiving towards the ship. To see him better, the captain moved his ship 92m closer to the cliff. The angle of elevation at that
moment was 690. Determine the height of the cliff to the nearest tenth of a meter.
Answer:
The height of the cliff CD is approximately 539.76 m
Step-by-step explanation:
The given parameters are;
The first angle of elevation with which the captain sees the person on the cliff = 61°
The second angle of elevation with which the captain sees the person on the cliff after moving 92 m closer to the cliff = 69°
The angle made by the adjacent supplementary angle to the second angle of elevation = 180° - 69° = 111°
∴ Whereby, the rays from the first and second angle of elevation and the distance the ship moves closer to the cliff forms an imaginary triangle, we have;
The angle in the imaginary triangle subtended by the distance the ship moves closer to the cliff = 180° - 111° - 61° = 8°
By sine rule, we have;
AB/(sin(a)) = BC/(sin(c))
Which gives;
92/(sin(8°)) = BC/(sin(61°))
BC = (sin(61°)) × 92/(sin(8°)) ≈ 578.165 m
BC ≈ 578.165 m
The height CD = BC × sin(69°)
∴ The height of the cliff CD = 578.165 m × sin(69°) ≈ 539.76 m.
The height of the cliff CD ≈ 539.76 m.
Colton scored a 70 on his first history test of the term and a 91 on the second history test. Coltons score increased by what percent?
Answer:
30 Percent
Step-by-step explanation:
Use the percent change formula.
whats 7/13 plus -2 as a fraction?
Answer:
-19/13
Step-by-step explanation:
[tex] \frac{7}{13} - 2 = \frac{7}{13 } - \frac{26}{13} \\ = - \frac{19}{13} [/tex]
Answer:
-19/3
Step-by-step explanation:
Rewrite the equation to 7/13-2 and get -1 and 6/13 which in improper fraction format is -19/3.
Evaluate the following expression. 1 + tan^2(pi/6)
A. 2
B. 4
C. 11/3
An explanation of the answer will be awarded extra points
Answer:
B
Step-by-step explanation:
I Can't explain it,I'm sorry
5. You are buying orange juice for $3.50 per container and have a gift card worth $5. The function f(x) = 3.50x-5 represents your total cost f(x) if you buy x containers of orange juice and use the gift card. How much would you pay for 4 containers of orange juice?
Answer:
$9
Step-by-step explanation:
If you do 3.5*4 then you get 14. You then use the $5 gift card so you subtract 5 from 14 and get 9
using the equation, that would be f(x) = (3.5*4)-5. Using PEMDAS, you would do the parenthesis first so it would be f(x) = 14-5 which equals 9
What is the y-intercept of the function f(x) = -2/9x + 1/3?
Answer:
The y intercept would be (0, 1/3)
The number at the end is always the y value. In a y intercept x is always 0.
The diagram above represents a biochemical process that occurs in a cell. The purpose of this process is to synthesize ?
Messenger RNA
Carbohydrates
Deoxyribonucleic Acids
Proteins
Answer:
Proteins
Step-by-step explanation:
I took the test and I got it right.
Answer:
proteins
Step-by-step explanation:
Find the value of the y-intercept of the line whose equation is 2x + 3y = 6.
Answer:
To find the x-intercept, substitute in
0
for
y
and solve for
x
. To find the y-intercept, substitute in
0
for
x
and solve for
y
.
x-intercept(s):
(
3
,
0
)
y-intercept(s):
(
0
,
2
)
Step-by-step explanation:
can you help i need to finish this by today!
ASAP
Can someone please helppp
Answer:
Option 4
Step-by-step explanation:
9x-7i > 3(3x-7u)
Can you simplify
Step-by-step explanation:
9x - 7i > 3(3x - 7u)
9x - 7i > 9x - 21u
9x - 9x - 7i > -21u
-7i > -21u
-7i/-21 > u
1/3 < u
(When dividing by a negative, flip the sign)
A car is 180 inches long. A truck is 75% longer than the car. How long is the truck?
Answer:
315 inches long
Step-by-step explanation:
180/4=45
180+(45*3)=315
Answer:
240
Step-by-step explanation:
Jimmy has 10 apple’s and gets rid of 2 how many are left
Answer:
8
Step-by-step explanation:
Answer:
8 apples
Step-by-step explanation:
By saying gets rid of, it means subtraction
So, the equation would be
10-2
=8
Hope that clarified your answer!
Round 53.121 to the nearest half.
Pls helppp :))
Solve for x by factoring
X^2+4x-21=0
There are multiple answers
Answer:
[tex]x=3,-7[/tex]
Step-by-step explanation:
We can solve for x by using [tex]\frac{-b\pm\sqrt{b^{2} -4ac} }{2a}[/tex]
By applying this on the quadratic equation, we get:
[tex]x=\frac{-4\pm\sqrt{4^{2}+84} }{2}[/tex]
Which simplifies to:
[tex]x=\frac{-4\pm10}{2}[/tex]
[tex]\therefore x=3,-7[/tex]
You purchased concentrated cleaner that must be diluted before use. Container a is the cleaner, which is 20% solution. Container b is pure water. You are mixing together the contents of container a and container b to produce 40 gallons of 9% solution. How many gallons from each container are needed to create the 40 gallons of 9% cleaning solution?
Answer:
18 gallons from container [tex]a[/tex] and 22 gallons from the container [tex]b[/tex] to be mixed to get the required mixture.
Step-by-step explanation:
Given that the container [tex]a[/tex] has 20% concentrated cleaner
and container [tex]b[/tex] has pure water which has 0% cleaner.
Let x gallons from container a and y gallons from the container b are mixed to get a 9% concentrated solution.
So,
[tex]9\%\; \text{of}\; (x+y) = (20\% \; \text{of}\; x )+(0\% \; \text{of}\; y)\cdots(i)[/tex]
As the total amount of the final solution= 40 gallons
So, [tex]x+y=40\cdots(ii)[/tex]
Using the value of equation (ii) in equation (i), we have
9% of 40 = 20% of x
[tex]\Rightarrow 0.09\times 40=0.2 \times x[/tex]
[tex]\Rightarrow x=\frac{0.09\times 40}{0.2}[/tex]
[tex]\Rightarrow x=18[/tex] gallons.
From equation (ii),
18+y=40
[tex]\Rightarrow y=40-18=22[/tex] gallons.
Hence, 18 gallons from container [tex]a[/tex] and 22 gallons from the container [tex]b[/tex] to be mixed to get the required mixture.
2x-3x+(-10) when x=2
Answer:
-12
Step-by-step explanation:
Answer:
-12
Step-by-step explanation:
Plug in x.
2(2)-3(2)+(-10)
Simplify.
4-6-10=-12
Hope this helps...have a great day c:
if 8 7/18 - ( 1 5/6 + y) = 3 4/15 + 2 3/45
what is y?
PLZ HELP MEE!!!!!!!!!!
Answer:
y=7(x-5)+3
Step-by-step explanation:
At a baseball game, the stadium gave T-shirts to the first 100 fans to arrive. Each T-shirt cost $15.00. How much did the stadium pay for the T-shirts it gave away?
Jessica earns 800 each month working a part time job. she wants to save a total of 2,400 for collage over a one- year period. what percentage of Jessica's total monthly budget should go to her collage savings to meet her goal
Answer:
25%
Step-by-step explanation:
Given parameters:
Amount earned per month = 800
Her savings goal = 2400
Unknown:
Percentage of monthly income that must go into savings = ?
Solution:
In a year, Jessica will earn:
12(800) = 9600
Now;
To earn 2400;
Let y be the percentage of her earning that goes into saving per year;
2400 = [tex]\frac{y}{100}[/tex] x 9600
2400 = 96y
y = 25%
if you have a question on anything just ask
Answer:
how are you
Step-by-step explanation:
Use the Pythagorean Theorem to solve for x.
*
The other person provided a great answer but i do it a little different....
[tex]\left[\begin{array}{ccc}A^2=C^2-B^2\\A^2=10^2-6^2\\A^2=100-36\\A^2=64\\\sqrt{64}=8 \end{array}\right][/tex]
All i did was use the formula A^2=C^2-B^2. I Plugged in the numbers to the formula and got A^2=10^2-6^2. Next, I found what 10^2 equals by doing 10*10 which equals 100. Then, i found out what 6^2 equals by doing 6*6 which equals 36. Next, what i did was subtracted 100 from 36 and got 64. Finally i found the square root of the number 64 which equal 8 since 8x8=64.
The measure of the unknown variable {x] is 8 inches.
What is Pythagoras theorem?The Pythagorean theorem or Pythagoras' theorem is a fundamental relation in Euclidean geometry between the three sides of a right triangle. Mathematically, it can be written as -
(hypotenuse)² = (base)² + (perpendicular)²
Given is a right angle triangle.
Using the Pythagoras theorem, we can write -
(hypotenuse)² = (base)² + (perpendicular)²
(10)² = (base)² + (6)²
(base)² = (10)² - (6)²
(base)² = (10 - 6)(10 + 6)
(base)² = 4 x 16
(base)² = 64 inches
(base) = 8 inches
x = 8 inches
Therefore, the measure of the unknown variable {x] is 8 inches.
To solve more questions on Pythagoras theorem, visit the link below -
https://brainly.com/question/343682
#SPJ2
Gribbles are small, pale white, marine worms that bore through wood. While sometimes considered a pest since they can wreck wooden docks and piers, they are now being studied to determine whether the enzyme they secrete will allow us to turn inedible wood and plant waste into biofuel.1 A sample of 50 gribbles finds an average length of 3.1 mm with a standard deviation of 0.72. Give a best estimate for the length of gribbles, a margin of error for this estimate (with 99% confidence), and a 99% confidence interval. Round your answer for the point estimate to one decimal place, and your answers for the margin of error and the confidence interval to two decimal places. point estimate = Enter your answer; point estimate margin of error = Enter your answer; margin of error The 99% confidence interval is Enter your answer; The 99%confidence interval, value 1 to Enter your answer; The 99%confidence interval, value 2
Answer:
a) The Margin of Error = 0.26
b) The 99% Confidence Interval = ( 2.84, 3.36)
Step-by-step explanation:
a) Margin of Error
The formula for Margin of Error =
z × Standard deviation/√n
From the above question
The z score for 99% confidence interval = 2.576
Standard deviation = 0.72
n = Random number of samples = 50
Margin of Error =
2.576 × 0.72/√50
= 1.85472 /√(50)
= 0.2622970178
Approximately to 2 decimal places = 0.26
b) 99% Confidence Interval
= Mean ± Margin of Error
Mean = 3.1mm
Confidence Interval = 3.1 ± 0.26
3.1 ± 0.26
= 2.84
3.1 + 0.26
= 3.36
The 99% Confidence Interval = ( 2.84, 3.36)
Quinton typically walks 28 yards south on Pine Street and 45 yards east on Maple Avenue in order to get to school. How much shorter would his walk be if he took the shortcut shown below? (50PTS)
Answer:
B- 20 yards
Step-by-step explanation:
First you have to find the hypotenuse by finding the square root of 28 squares plus 45 squared which equals 53 yards. Next you have to add the two legs of the right triangle so we can subtract the shortcut length from that. So you have to do 28 plus 45 which equals 73 yards. 73 minus 53 is 20. So the answer is 20 yards.
Answer:
20
you have to find the hypotenuse by finding the square root of 28 squares plus 45 squared which equals 53 yards. you have to add the two legs of the right triangle so we can subtract the shortcut length from that. So you have to do 28 plus 45 which equals 73 yards. 73 minus 53 is 20. So the answer is 20 yards.
