Answers
Answer:
x =4,37
Step-by-step explanation:
Tan theta =x÷12
12tan 20° =×
=4.3676...
Related Questions
which expression is a factor of x^2-5x-6
Answers
Answer:
(x - 6)(x + 1)Step-by-step explanation:
These are the factors
First, find the factors of 6 6 / / \ \ 1 2 3 61 and 6 make 52 and 3 also make 5But which one makes -5-3+2=-1 -2+3=1So not 2 and 3-1+6=5 -6+1=-51 and -6 worksThis means the factors as (x - 6) and (x + 1).Hope this helps,
Kavitha
P.S - Have an awesome day!!
One in five 18-year-old Americans has not graduated from high school (The Wall Street Journal, April 19, 2007). A mayor of a northeastern city comments that its residents do not have the same graduation rate as the rest of the country. An analyst from the Department of Education decides to test the mayor's claim. She draws a random sample of 80 18-year-olds in the city and finds that 20 of them have not graduated from high school. Compute the point estimate for the proportion of 18-year-olds who have not graduated from high school in this city. (Round your final answer to 2 decimal places.)
Answers
Answer:
The point estimate for the proportion of 18-year-olds who have not graduated from high school in this city is 0.25.
Step-by-step explanation:
The point estimate is the sample proportion.
She draws a random sample of 80 18-year-olds in the city and finds that 20 of them have not graduated from high school.
This means that:
[tex]p = \frac{20}{80} = 0.25[/tex]
The point estimate for the proportion of 18-year-olds who have not graduated from high school in this city is 0.25.
If a jar contains 5 red marbles, 4 blue marbles, 7 yellow marbles, and 3 green marbles, what is
the probably that a randomly selected marble is red or yellow?
Answers
Answer is in the photo. I can only upload it to a file hosting service. link below!
tinyurl.com/wpazsebu
Answer:
Likely
Step-by-step explanation:
The answer is likely because out of 19 marbles the probablility o choosing a red or yelow marble is 12. When you divide 12 by 19 then you get 63 which is close to the likely side.
Helpssbwjmeekndhshhsbdh
Answers
Help pls
Reasoning Each month, a shopkeeper spends 7x +19 dollars on rent and electricity. If he spends
5x – 2 dollars on rent, how much does he spend on electricity? Use pencil and paper. For which
value(s) of x is the amount the shopkeeper spends on electricity less than $100? Explain how you
found the value(s).
Answers
The amount spent on electricity is 2x + 21. And the value(s) of x is the amount the shopkeeper spends on electricity less than $100 is less than 39.5.
What is Algebra?Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.
The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.
Reasoning Each month, a shopkeeper spends 7x +19 dollars on rent and electricity. If he spends 5x – 2 dollars on rent.
Then the amount spent on electricity is given as,
⇒ (7x + 19) - (5x - 2)
⇒ 7x + 19 - 5x + 2
⇒ 2x + 21
The value(s) of x is the amount the shopkeeper spends on electricity less than $100 is given as,
2x + 21 < 100
2x < 79
x < 39.5
The amount spent on electricity is 2x + 21. And the value(s) of x is the amount the shopkeeper spends on electricity less than $100 is less than 39.5.
More about the Algebra link is given below.
https://brainly.com/question/953809
#SPJ2
The nutritional chart on the side of a box of a cereal states that there are 87 calories in a 3/4 cup serving. How many calories are in 8 cups of the cereal?
Answers
Answer:
Total calories in 8 cup = 928 calories
Step-by-step explanation:
Given:
Calories in 3/4 cup of cereal = 87 calories
Find:
Total calories in 8 cup
Computation:
Total calories in 8 cup = 8 x 87 x [4/3]
Total calories in 8 cup = 928 calories
Amira wrote the inequality p + 5 = 18. Which situation is best represented by this inequality?
Answers
Answer: Amira added 5 candy bars to the p pile of candy bars there were no more than 18 candy bars in the pile.
Step-by-step explanation: hope this helps
15=5x+45
What is the value of x?
Answers
15 = 5x + 45
15 - 45 = 5x
-30 = 5x
-30/5 = x
-6 = x
Answer:
x= -6
Step-by-step explanation:
15=5x+45
15-45=5x
-30=5x
-30/5=5x/5
-6=x
x= -6
A line's y-intercept is 4, and its slope is 1/2. What is its equation in slope-intercept form?
Write your answer using integers, proper fractions, and improper fractions in simplest form.
Answers
Answer:
y = 1/2x + 4
Step-by-step explanation:
The slope-intercept equation is written out like so:
y = mx + b
M stands for your slope: 1/2
B stands for your y-intercept: 4
So, your equation is y = 1/2x + 4
which expression is equivalent to 3(9p+2r)
Answers
Answer:
27p+6r
Step-by-step explanation:
3(9p+2r)
1 Solve the product 3(9p+3 2r)
3⋅9p+3x2r
Multiply 3 times 9
27p+3x2r
Final Answer
27p+6r
what is the square root of 7875
Answers
Answer:
7875−−−−√225⋅35−−−−−−√ 225−−−√35−−√ 1535−−√
7875−−−−√=88.74119674649424
hope that helps!
What are the first six multiples of 18
Answers
Answer:
Hey mate.....
Step-by-step explanation:
This is ur answer.....
The first six multiples of 18 are :-
18, 36, 54, 72, 90, 108Hope it helps!
mark me brainliest plz....
Follow me! :)
The sea turtle dove down in the ocean 12 meters. Later the sea turtle was chasing his dinner of fish and dove 7 more meters.
Answers
If you are trying to find how deep the turtle is now, the answer would be 19 meters. 12 + 7 = 19.
Hope this helps. Have a nice day.
1. Select all the equations where x = 5 is a solution.* A. 2x + 4 = 14 B. 5x = 55 C. 6x + 3 = 14 D. 8 + 3x = 23 E. 6x = 30 F. 5x = 1
Answers
Answer:
A,D,E. Hope this helps!
Step-by-step explanation:
A. x=5
B. x=11
C. x=11/6
D. x=5
E. x=5
F. x=1/5
I need a answer ASAP
Answers
Answer:
8
Step-by-step explanation:
y = (10x^2 + 3x^4)/ 2x^2
where x is not equal to 0
(20x + 12x)/4x
32x / 4x
= 8
Please help me. I need help
Answers
Answer: (2x+11)(x+1)
Step-by-step explanation: 2x 2 +11x+2x+11 then x(2x+11)+(2x+11) and that should get you to (2x+11)(x+1)
Hope this helped :))
(Due in 20 minutes)
The three side lengths of four triangles are given. Which triangle is a right triangle?
Triangle 1: √13, 6, 7
Triangle 2: 7, 8, 13
Triangle 3: 10, 11, 12
Triangle 4: √10, 9, 8
Answers
Convert 2.88 x 10-12 into standard notation
Answers
*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆
Answer: IF you meant 2.88 x 10^-12 The answer is: 0.00000000000288 OTHERWISE i don't know what you were asking
Explanation:
I hope this helped!
<!> Brainliest is appreciated! <!>
- Zack Slocum
*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆
Answer:1.6799999999999997 x 10^1
There was 7L punch for the birthday party. How many mL punch was there?
Answers
there was 7000mL of punch
Answer:
7000 milliliters of punch for the birthday party
Find the mean, median, mode, and range of the following data set.
15, 12, 19, 15, 16, 13, 15.
Mean:
Median:
Mode:
Range:
Answers
12 13 15 15 15 16 19
mean: 15
median: 15
mode: 15
range: 7
Answer:
12, 13, 15, 15, 15, 16, 19
Step-by-step explanation:
Mean: 15
Median: 15
Mode: 15
Range: 7
SOMEONE PLEASE HELP!! I NEED TO GET THIS RIGHT
Answers
Answer:
middle
Step-by-step explanation:
can somebody help me solve for x.
Answers
Answer:
8/3
Step-by-step explanation:
x : 4 = 4 : 6
x = 16/ 6
x = 8/3
20% of ___ is 10 pls help me ✌
Answers
Answer:
200
Step-by-step explanation:
i hope this is right if not sorry
(60 points)!
What type of angles are ∠4 and∠6?
Question 2 options:
adjacent angles
alternate exterior angles
alternate interior angles
corresponding angles
none of these
Answers
When we take two parallel lines they will create 8 angles, such as 1,2,3,4,5,6,7 & 8. In that angle 6 is 65 degrees. Angles 1,2,3 & $ are in one line and remaining four angles on other line. So Angles 4 and 6 are alternate exterior angles.
As you know, there are three doors. Behind one door is a fabulous prize.
Behind the other two doors are bogus prizes. When you pick the first door
another door will open and show you a bogus prize, leaving the door you
picked and the third door closed. You once again pick one of the two closed
doors. You will either get the fabulous prize or the bogus prize
Answers
Answer:
What do you mean
Step-by-step explanation:
PLEASE HELP!!!!!!!!!!! ASAP!!!!!!!!!!!
A freight train from city A to city B and a passenger train from city B to city A left the cities at the same time, at 10:00 AM, heading towards each other. The distance between the cities is 360 miles. The freight train is traveling at 50 mph, the passenger train is traveling at 70 mph.
At what TIME will the trains pass each other?
Answers
Answer:
at 1 pm
Step-by-step explanation:
Myopia in children. Myopia, also called short-sightedness, is a common visual impairment that is reaching alarming proportions worldwide. The condition typically develops in school-age children and adolescents. It has long been thought that the condition was associated with too much reading, but recent evidence suggests instead that a lack of exposure to natural outdoor light may play a role. To investigate this new theory, researchers compared rates of myopia among randomly selected young children (6 and 7 years old) of Chinese ethnicity living in either Sydney (Australia) or Singapore. The researchers found that 4 of the 124 children in the Australian sample had myopia, compared with 183 among the 628 children from Singapore.
a. Display the findings in a two-way table. What percent of the children in the study had myopia? What is that percent among the children living in Australia and among those living in Singapore?
b. The researchers obtained information for most of the children in the study about their weekly amount of time in hours) spent reading or writing and the weekly amount of time in hours) spent on outdoor activities. Here are the summary statistics:
Time reading/writing Number of children Mean Standard deviation
Australia 109 20.8 13.9
Singapore 611 17.8 8.8
Time outdoors Number of children Mean Standard deviation
Australia 102 13.75 1.02
Singapore 586 3.05 0.12
How do the children from both countries in this study differ in how they spend their time?
c. Does the study suggest that more time spent reading or writing is associated with a greater risk of myopia among the enrolled children? Does it suggest that more time spent outdoors is associated with a greater risk of myopia? Can we draw a conclusion of causality based on this study?
d. The children enrolled in this study were all of Chinese ethnicity. What is the advantage in this study of collecting data from children with the same ethnicity compared with selecting random samples of children from each location regardless of ethnicity?
Answers
Answer:
a. A two way table is presented as follows;
[tex]\begin{array}{cccc}&Had \ Myopia&Do \ not \ have \ Myopia& Totals\\Sydney \ (Australia)&4&120&128\\Singapore&183&445&628\end{array}[/tex]
ii) The percentage of students in the study that have myopia are approximately 24.867%
iii) The percentage of children living in Australia with myopia are approximately 3.2258%
The percentage of children living in Singapore with myopia are approximately 29.14%
b. Children in Australia spend more time reading, writing and also outdoors than children in Singapore
c. The study does not suggest that more time spent reading or writing is associated with a greater risk of myopia among the enrolled children
The study does not suggests that more time spent outdoors is associated with a greater risk of myopia
d. The advantage is to reduce associated variables the generate more accurate findings or result
Step-by-step explanation:
a. A two way table is presented as follows;
[tex]\begin{array}{cccc}&Had \ Myopia&Do \ not \ have \ Myopia& Totals\\Sydney \ (Australia)&4&120&128\\Singapore&183&445&628\end{array}[/tex]
ii) The percentage of students in the study that have myopia are;
(4 + 183)/(124 + 628) × 100 ≈ 24.867%
iii) The percentage of children living in Australia with myopia is given as follows;
4/124 × 100 ≈ 3.2258%
The percentage of children living in Singapore with myopia is given as follows;
183/628 × 100 ≈ 29.14%
b. The data for the time spent reading and writing is presented as follows;
Number of children [tex]{}[/tex] Mean Standard deviation
Australia 109 [tex]{}[/tex] 20.8 13.9
Singapore [tex]{}[/tex] 611 17.8 8.8
The data for the time spent outdoors is presented as follows;
Number of children [tex]{}[/tex] Mean Standard deviation
Australia 102 [tex]{}[/tex] 13.75 1.02
Singapore [tex]{}[/tex] 586 3.05 0.12
From the data, more children in Australia spend more time reading and writing and also outdoors than children in Singapore
c. From the data, more children spend their time reading and writing in Australia and are also less likely to develop myopia than children in Singapore
Therefore, the study does not suggest that more time spent reading or writing is associated with a greater risk of myopia among the enrolled children
Similarly, the study does not suggests that more time spent outdoors is associated with a greater risk of myopia
d. The advantage of collecting data from children with the same ethnicity compared with selecting random samples of children from each location regardless of ethnicity is to reduce the variables or influential factors that may alter the impact on the test and the results
Select the correct answer.
Choose the number sentence that illustrates the distributive property of multiplication over addition.
6 × (5 + 8) = (6 × 5) + 8
6 × (5 + 8) = (6 + 5) × (6 + 8)
6 × (5 + 8) = (6 × 5) + (6 × 8)
Answers
Answer:
Probably B.
Step-by-step explanation:
Please help me in ASAP
Answers
Step-by-step explanation:
code:257 403 0731
Pass:HELLO
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Which expression is equivalent to 6x^2+16x-6
Answers
The answer is (2x+6)(3x-1)