Answer:
13/30
Step-by-step explanation:
Begin by getting 2/5 on the right side.
2/5-2/5 + m = 5/6 - 2/5
The lowest common denominator is 6 * 5 which are prime to each other.
m = 5/6 - 2/5 Multiply the tops and bottoms to make the bottoms 30
m = 5*5/(6*5) - (2*6)/(5*6)
m = (25 - 12)/30
m = 13/30
write all the possible subsets of {1,2,3}
Answer:
Answer: The set {1, 2, 3} has 8 subsets.
A set with 'n' elements in it can have 2n subsets.
A 12 feet tall street light is making an 18 feet shadow at the same time in nearby building is making a 72 feet shadow
Answer: 48 ft
Step-by-step explanation:
Given
Height of street light h=12 ft
length of shadow x=18 ft
Shadow length of building x'=72 ft
suppose the height of the building is y
from the figure, we can write
[tex]\Rightarrow \tan p=\dfrac{h}{x}=\dfrac{12}{18}\\\\\Rightarrow \tan p=\dfrac{y}{x'}=\dfrac{12}{18}\\\\\Rightarrow y=72\times \dfrac{2}{3}=48\ ft[/tex]
y+-16=70
please help
Answer:
[tex]y + - 16 = 70 \\ y = 70 + 16 \\ y = 86[/tex]
Hope it helps!!
A contractor decides that he can build a barn in nine weeks using four men. If he employs two more men, how long will the job take? Assume that all the men work at the same rate.
Answer: 6weeks
Step-by-step explanation:
If it takes 4 men, 9 weeks to build a barn.
It will take a man; 4 x 9weeks =36 weeks to make a barn
If it takes a man 36weeks to make a barn, it will take 4men + 2 men i.e 6men = 36/6
6 weeks to make a barn
The long will the job take:
If it takes 4 men, 9 weeks to build a barn. It will take a man; 4 x 9weeks =36 weeks to make a barn If it takes a man 36weeks to make a barn, it will take 4men + 2 men i.e 6men = 36/6Thus,by adding two more men it will take 6 weeks to make a barn.
Learn more:
https://brainly.com/question/1063042?referrer=searchResults
help me please lol i don’t understand this
Answer:
a-88 degrees give me brainiest
is 12cm < 15cm correct
Answer:
yes 15cm is 3cm more than 12cm
Step-by-step explanation:
The line segment shown is translated down 4 units, what are the new coordinates of B?
(0.3)
Answer:
(0, - 1 )
Step-by-step explanation:
A translation down means subtracting 4 from the y- coordinate of the point, that is
B(0, 3 ) → B'(0, 3 - 4 ) → B'(0, - 1 )
Cost pc 7 meter cloth is 161 find the cost of 3 meter and 5 meter and 9 meter of the same cloth
Step-by-step explanation:
here's your solution
=> Cost of 7 meter of clothe = ₹161
=> cost of 1 meter of clothe = 161/7
=> cost = ₹23
=> cost of 3 meter = ₹23*3. => ₹69
=> cost of 5 meter = ₹23*5 => ₹115
=> cost of 9 meter = ₹23*9 => ₹ 207
hope it helps
What is the volume of the figure?
Answer:
volume of a cone = [tex]\pi[/tex] [tex]r^{2}[/tex] h/3
[tex]\pi[/tex] = 22/7 or 3.14
r (radius) = 8 ft
h (height) = 16 ft
∴ volume = 22/7 * 8 * 8 * 16/3
= 3.14 * 64 * 16/3
= 1072.76190476 [tex]ft^{3}[/tex]
hope this answer helps you.....
please mark as brainliest ..... thank you....
Answer:
1072 ft³
Step-by-step explanation:
Formula we use,
→ V = πr²(h/3)
Now the volume of cone is,
→ πr²(h/3)
→ 3.14 × (8)² × (16/3)
→ 3.14 × 64 × 5.333
→ 200.96 × 5.333
→ 1072.33
→ ≈ 1072 ft³
Hence, volume is 1072 ft³.
Solve the following system of equations algebraically:
y=x^2-3x+10
y=x+10
PLEASE HELP ASAP!!!!
Answer:
A
Step-by-step explanation:
Opposite sides are parallel, but only opposite sides are of equal length and has 4 right angles.
Find X and Y from the given picture
Answer:
Step-by-step explanation:
How many students chose Insta?
Answer:
18 students
Step-by-step explanation:
15% chose insta (15/100)*120=18 students
What is the area, in square centimeters, of the isosceles trapezoid below? 5.9 cm 5.8 cm 14.7 cm
It'd be nice to see an image. You can take a screenshot and download it, just attach it to your post
Pls help fast pls don't leave a non link
Answer:
A
Step-by-step explanation:
(100 points) Give a step by step explanation on how you solved this problem
y = 3x + 3
y = x − 1
Answer:
Step-by-step explanation:
Well you have to solve for X to find Y simplified.
Since both equations equal Y you can plug them together
3x+3=x-1
-x -x
2x+3=-1
-3 -3
2x=-4
Divide -4 by 2 and you get X = -2 then plug X into both equations and boom
y= -3
I NEED HELP WITH THIS!!!
Answer:
they all are correct
Step-by-step explanation:
Can someone help me with this
Answer:
I believe it is 30 toy planes
Hope this helps.
Step-by-step explanation:
toy cars - 2 = 12
toy planes - 5 = 30
total - 7 = 42
Please answer, no jokes or fakes or report
Answer:
375.2887 ft is the answer
Answer:
375.3 ft
Step-by-step explanation:
What we need to do first is divide 175 by the sine of 25°.
175/sin(25°)
175/0.422618
175/1 * 500000/211309
25/1 * 500000/30187
12500000/30187
414.085534 = length of hypotenuse.
Now, find the square root of the difference between c² & a².
b = √414.09² - 175²
b = √171470.528 - 30625
b = √140845.528
b = 375.293922
b ≈ 375.3
The horizontal distance between the technician and the base of the telephone pole is 375.3 ft.
Researchers studying the sticky droplets found on spider webs will measure the widths of a random sample of droplets. From the sample, the researchers will construct a 95 percent confidence interval to estimate the mean width of all such droplets. Write the correct statement about a 95 percent confidence interval for the mean width.
Answer:
The interval will be narrower if the researchers increase the sample size of droplets.
Step-by-step explanation:
The confidence interval can be obtained using the relation :
Xbar ± Margin of error
Margin of Error = Zcrit * s/sqrt(n)
Zcritical = critical vlaue at the specified α - level
n = sample size ; s = standard deviation
Sample size being the denominator, will reduce the overall value of the error margin as we utilize a larger sample.
Hence, the interval becomes narrower as the error margin is reduced which is achieved by employing an increased sample size.
Answer:
B. The interval will be narrower if the researchers increase the sample size of droplets.
Step-by-step explanation:
B. The interval will be narrower if the researchers increase the sample size of droplets.
Margin of error of a confidence interval:
The higher the margin of error, the wider an interval is.
In which z is related to the confidence level(the higher the confidence level, the higher z), is the standard deviation of the population and n is the size of the sample.
From this, we conclude that:
If we increase the confidence level, the interval will be wider.
If we increase the sample size, the interval will be narrower.
Which of the following statements about a 95 percent confidence interval for the mean width is correct?
Increasing the sample size leads to a narrower interval, so the correct answer is given by option B.
can someone help me
Answer:
[tex] \frac{x}{3} = 17 - 22 = - 5 \\ x = - 15[/tex]
Can someone help me I give you 10 points
Answer:
A:40%
B:7.8
Step-by-step explanation:
Using a proportion , you can solve for the bottom side.
13/19.5 = 5.2/x
multiply 19.5 and 5.2 and rewrite the equation
101.4=13x
x=7.8
To find the scale, divide 5.2 by 13
5.2/13=0.4
Double check by dividing 7.8 by 19.5
7.8/19.5=0.4
0.4=40%
The triangles shown below must be congruent. Help please
Use the distributive property with factoring to find the equivalent expression. 24n + 32w = (3n + w)
Answer:
Step-by-step explanation:
24n + 32w = (3n + w)
We're asked to use distributive property, this means that we have to find a way that the given expression on the left hand side is equal to the given incomplete exresssion on the right hand side. In so doing, we're fulfilling the distributive property tag.
Given 3n, 3 factorises 24 into 8, and at the same time, factorises 32 into 4. Thus, we can then conclude that
24n + 32w = 8(3n + 4w)
Marie get allowance everyday she gets 10$ each week she already has 30$ But she wants 90$ how much money does she need to make 90$? this question didnt make sense but my teacher needs this question done so can someone HELP ME
Answer:
She needs $60 more so she has to work 6 weeks to get that much.
Step-by-step explanation:
x = each week
y = total
Equation:
90 = 10x + 30
10x = 60
x = 6
Answer:
She needs 60 dollars, it would take her 6 weeks to reach this amount of money
Step-by-step explanation:
90 - 30 = 60 dollars
60 ÷ 10 = 6
What is the slant height x of the square pyramid?
The figure shows a square pyramid. The slant height is shown as a dashed line perpendicular to the base edge and is labeled as x. The length of half of the base edge is 3 meters. The lateral edge makes a 30 degree angle with the lateral height.
Enter your answer in the box. Express your answer in radical form.
x =
m
no links pls
answer it
the link wont open plz reupload it
Mount McKinley, in Alaska, is about 3.848 miles high. If a mountain climber can climb 0.25 miles per day, about how long to the nearest day, would it take to climb Mount McKinley?
Answer:
About 16 days.
Step-by-step explanation:
The mountain is 3.848 miles high and you climb 0.25 miles a day. So you have to divide 3.848 by 0.25 and you get 15.392. But since you have to round it to the nearest day, you round it up to 16 because if you round down to 15 you still have 0.392 of a day leftover.
How many restaurants have a excellent rating that seat over 100. A) 182 , B) 159, C)180 OR D) 311
Answer: I don't know if this is possible to solve https://youtu.be/dQw4w9WgXcQ
Step-by-step explanation:
2/3 - 3/2y + 1/3y + 4 = 0
Answer:
y = 4
Step-by-step explanation:
(2/3 + 4) + (-3/2y + 1/3y) = 0
(-3/2y + 1/3y) = -4 2/3
-9/6y + 2/6y = -14/3
-7/6y = -14/3
cross-multiply:
-21y = -84
y = 4
Answer:
y = 4
Step-by-step explanation:
Please use parentheses for clarity, remembering what big differences they make in expression values.
I will assume that your "2/3 - 3/2y + 1/3y + 4 = 0" actually means
2/3 - (3/2)y + (1/3)y + 4 = 0
The LCD here is 6, which is the product of the denominators 2 and 3.
Then your "2/3 - 3/2y + 1/3y + 4 = 0" becomes:
4 - 9y + 2y + 24 = 0, which simplifies to:
28 - 7y = 0. Solving this, we get y = 4