20% of what number is = to 5% of 680
Answer:
Solution
20%× X= 5%×680
or, X=170.
The required number is 170.
The perimeter of a rectangular red sticker is 32 millimeters. The sticker is 12 millimeters wide. How tall is it?
Answer:
4 millimeters
Step-by-step explanation:
(32-24)/2
A company has been forced to reduce its number of employees. Today the company has 34% fewer employees than it did a year ago. If there are currently 297 employees, how many employees did the company have a year ago?
Triangle ABC is shown with its incenter at D. The inscribed circle's radius measures 2 units. The length of AB is 9 units. The length of BC is 10 units. The length of AC is 17 units.
What is the area of triangle ACD?
What is the area of triangle ABC?
The area of triangle ACD and ABC are 17 and 46.75 square units respectively
How to find the area of a triangleThe formula for finding the area of a triangle is expressed as:
A = 0.5bh
where:
b is the base
h is the height
Area of the triangle ACD = 0.5DE * AC
Area of the triangle ACD = 0.5(2)(17)
Area of the triangle ACD = 17 square units
For the triangle ABC
Area = 0.5(BE)(AC)
Area= 0.5(5.5)(17)
Area = 46.75square units
Hence the area of triangle ACD and ABC are 17 and 46.75 square units respeectively
Learn more on area of triangle here: https://brainly.com/question/17335144
Find the measure of the missing angels.
Answer:
'b' and 'c' = 119 degrees
Step-by-step explanation:
Given that this is a basic intersection of straight lines, we can assume 'b' and 'c' are equal as well as the given angle and it's opposite. Given 61 degrees and and two straight lines we can just take 180 degrees - 61 degrees and we get 119 degrees, I solved for 'b', but this will give the same answer for 'c', as 'b' and 'c' are equal.
Answer:
B = 119°
C = 119°
Step-by-step explanation:
The value of back to back angles are the same when the lines are straight.Therefor there are two 61° they add together to make 122°You can then subtract 122 from 360 to get 238.Then take 238 and divide it by 2, to get your answer which is 119° for both.1/3=7/21, .. What are the means
Answer:
Equivelant fractions.
Step-by-step explanation:
Ask your self..
How did the 1/3 become 7/21?
Its very simple multiply 1/3's numerator and denominator by 7
So its going to be.. 1 x 7 = 7
3 x 7 = 21
Therefore, we have 7/21
Find the slope of the line joining the points (2, 5) and (3, 1)
Slope = change in Y / change in x
slope = (1-5) /(3-2)
Slope = -4/1
Slope = -4
Answer:
slope = -4
Step-by-step explanation:
The formula for finding slope is (y2 - y1)/(x2 - x1)
x1 = 2
y1 = 5
x2 = 3
y2 = 1
Plugging in our numbers,
(1 - 5)/(3 - 2) = -4/1
= -4
What can be the last digit of a a square of a natural number?
Answer:
1, 4, 5, 6, & 9 are the only digits that can be the last digit of the square of a natural number.
Step-by-step explanation:
NEED HELP ON HELP ON HOW TO DO THIS
You have triangle JKL. Angle J is a right triangle. Angle K has a measure of 40 degrees. Side k=26. Solve the triangle. Round angles and sides to nearest tenth.
Answer choices:
A) Angle L= 50 degrees, side L= 31.0, side J= 40.4
B) Angle L= 50 degrees, side L= 33.3, side J= 42.8
D) Angle L= 50 degrees, side L= 21.8, side J= 33.9
E) Angle L= 50 degrees, side L= 33.9, side J= 21.8
Pls give explanation!!
Answer:
Option E
Step by step explanation:
We know that angle J is a right angle meaning it's an angle 90 degrees. So to find angle L;
90+40+L=180
130+L=180
L=180-130
So therefore angle L =50 degrees
Now to find side J which is the opposite in the triangle,we use tan because it has adjacent and opposite which is what we're looking for;
Tan 40 degrees =opposite/26
We cross multiply
Opposite =Tan 40 degrees×26
Opposite =21.8
Side J=21.8
With side J found we can find side L using Pythagoras theorem
L^2=21.8^2 +26^2
L^2=475.24+676
L^2=1,151.24
L=Square root of 1,151.24
L=33.9
Answer:
A) Angle L= 50 degrees, side L= 31.0, side J= 40.4
Step-by-step explanation:
The mnemonic SOH CAH TOA is intended to remind you of the relationship between trig functions and sides of a right triangle. The given side of k is opposite the given angle K, so the sine or tangent functions can be used to find missing sides. If we want to start with the hypotenuse, we can use the relation ...
Sin = Opposite/Hypotenuse
sin(40°) = 26/j
j = 26/sin(40°) ≈ 40.4 . . . units (matches choice A)
Similarly, we can use the tangent relation to find side ℓ:
Tan = Opposite/Adjacent
tan(40°) = 26/ℓ
ℓ = 26/tan(40°) ≈ 31.0 . . . units (matches choice A)
Of course, angle L is the complement of 40°:
L = 90° -40° = 50°
The solution to the triangle is L = 50°, ℓ = 31.0, j = 40.4.
A box contains 15 identical balls - Six of the balls are redo 5 blue and the rest white. If three balls are selected one after one the other without replacement Find the probability that, are All three balls are red.
The answer is three red balls
Can someone help me with this please
Answer:
17 is the answer for #4
HELP IS NEEDED ASAP! WILL MARK THE BRAINLIEST FOR THE CORRECT ANSWER, NOT SOME SPAM OF LETTERS.
Answer:
1. A: 1
2. B 2[tex]\pi[/tex]
Step-by-step explanation:
Hope this helps! Please let me know if you need more help, or if you think my answer is incorrect. Brainliest would be MUCH appreciated. Have a great day! :)
426429418417422435420410432435423426409437436429411426411438422428413414Consider this data as a sample of the population.(a) Calculate a point estimate of the mean oxide thickness for all wafers in the population. (Round your answer to 3 decimal places.)(b) Calculate a point estimate of the standard deviation of oxide thickness for all wafers in the population. (Round your answer to 2 decimal places.)(c) Calculate the standard error of the point estimate from part (a). (Round your answer to 2 decimal places.)(d) Calculate a point estimate of the median oxide thickness for all wafers in the population. (Express your answer to 1 decimal places.)(e) Calculate a point estimate of the proportion of wafers in the population that have oxide thickness greater than 430 angstrom. (Round your answer to 4 decimal places.)(a) The point estimate of the mean oxide thickness is Entry field with correct answer424.091 Angstroms.(b) The point estimate of the standard deviation of oxide thickness is Entry field with incorrect answer Angstroms.(c) The point estimate of the standard error of the mean is Entry field with incorrect answer Angstroms.(d) The point estimate of the median oxide thickness is Entry field with incorrect answer417.5 Angstroms.
Answer:
Kindly check explanation
Step-by-step explanation:
Given the data:
426 429 418 417 422 435 420 410 432 435 423 426 409 437 436 429 411 426 411 438 422 428 413 414
A) Point estimate of the mean(m) : (ΣX) /n
Sample size(n) = 24
(426+429+418+417+422+435+420+410+432+435+423+426+409+437+436+429+411+426+411+438+422+428+413+414) / 24
= 10167 / 24
= 423.625 (3 decimal places)
b) Calculate a point estimate of the standard deviation of oxide thickness for all wafers in the population
s = √[Σ(X - m)² / (n - 1)]
Using calculator :
s = 9.277
s = 9.28 ( 2 decimal places)
C.)
Standard Error of point estimate :
SE = s/√n
SE = 9.28 / √24
SE = 1.8942720
(d) Calculate a point estimate of the median oxide thickness for all wafers in the population.
Median = 0.5 (n +1)th term
0.5(25) = 12.5th term ;
(12th + 13 th term)/2
(423 + 426) / 2
= 849/2
= 424.5
(e) Calculate a point estimate of the proportion of wafers in the population that have oxide thickness greater than 430 angstrom
Number of oxide thickness greater than 430 = 6
(number greater than 430 / total number of oxides)
= 6 / 24
= 1/4
= 0.25
Find the value of the expression -20 / -4
Answer:
5
Step-by-step explanation:
-20 / -4 = 5
A negative divided by a negative is positive!
Hope this Helps! :)
Have any questions? Ask below in the comments and I will try my best to answer.
-SGO
simplify the radical expression.
3√0.125b3
0.5b
−0.5b
5b
−5b
Answer:
Simplify the radical expression. 3√0.125b3 0.5b −0.5b 5b −5b - did not match any documents.
Suggestions:
Make sure all words are spelled correctly.
Try different keywords.
Try more general keywords.
Try fewer keywords.
Step-by-step explanation:
The bank requires that the Dotkoms pay their homeowner's insurance, property taxes,
and mortgage in one monthly payment to the bank. If their monthly mortgage payment
is $1,711.22, their semi-annual property tax bill is $3,239, and their annual homeowner's
insurance bill is $980, how much do they pay the bank each month?
Using proportions, it is found that they pay the bank $2332.72 each month.
What is a proportion?A proportion is a fraction of a total amount.
Their payments are given by:
Monthly mortgage of $1,711.22.Semi-annual property tax bill is $3,239, that is, it is paid every 6 months, hence 3239/6 = $539.83.Annual insurnce of $980, hence 980/12 = $81.67 each month.Then, the total amount is:
1,711.22 + 539.83 + 81.67 = $2332.72.
More can be learned about proportions at https://brainly.com/question/24372153
Which category do all of these shapes belong to?
(-10,2) and (-5,-1) find the midpoint
Step-by-step explanation:
solve accordingly to the picture
1. Write the equation for each of the following:
- Slope Intercept:
- Point-Slope:
- Standard Form:
Joseph went to visit his grandmother with his parents .They drove 240 miles in 4 hours .What was the average speed they were traveling? Be sure to show your work on how the answer is 60 miles per hour
Answer:
Average speed was 60mph so 240 ÷ 4 = 60
The triangle shown below has a base of 6 inches and a height of 4 inches. 6 What is the area, in square inches, of this triangle?
Answer:
Step-by-step explanation:
formula = b*h : 2
=> 4*6:2=24:2=12
Outside temperature over a day can be modelled as a sinusoidal function. Suppose you know the high
temperature of 83 degrees occurs at 5 PM and the average temperature for the day is 65 degrees. Assuming
t is the number of hours since midnight, find an equation for the temperature, D, in terms of t.
Answer:The temperature at 4 AM is 41 degrees.
Step-by-step explanation:
We have an average temperature of 45 degrees and a high of 53 degrees. That makes the midline 45 and the amplitude 8.
We could spend some time trying to figure out how to get a graph in which x=0 corresponds to midnight. However; that is not necessary. We can use any sinusoidal function we want, as long as we understand which part of the graph corresponds to what hour of the day.
So with midline 45 and amplitude 8, let's choose a simple function:
f%28x%29+=+45%2B8sin%28x%29
The time at which we are to find the temperature, 8 AM, is 8 hours before 4 PM, which is the time when the temperature is maximum. 8 hours is 1/3 of a day, so we want to find the temperature 1/3 of a cycle before 4 PM.
Since we are using a sine function with no horizontal shift, the time of maximum temperature, 4 PM, corresponds to 1/4 of the way through a cycle, at pi/2.
We want to go back 1/3 of a cycle, or (2/3)pi, from pi/2; that puts us at -pi/6.
That makes it easy to find the temperature at 4 AM without a calculator:
45%2B8%2Asin%28-pi%2F6%29+=+45%2B8%28-.5%29+=+45-4+=+41
The temperature at 4 AM is 41 degrees.
Answer:
probably he temperature at 4 AM is 41 degrees.
Step-by-step explanation:
Suppose a jar contains 9 red marbles and 15 blue marbles. If you reach in the jar and pull out 2 marbles at random at the same time, find the probability that both are red.
Answer:
[tex] \frac{3}{23} [/tex]
Step-by-step explanation:
Since we start with 24 marbles, 9 of which are red, the probability of selecting a red marble is 9/24. The red marble is not put back, so there are now 23 marbles, 8 of which are red. It follows that the probability of selecting a second red marble is 8/23. So the probability of selecting a red marble and then another red marble is
[tex] \frac{9}{24} \times \frac{8}{23} = \frac{3}{8} \times \frac{8}{23} = \frac{3}{23} [/tex]
Don’t mind my handwriting but can someone help me please
Answer: A: 3/5
Step-by-step explanation:
He made 9 shots
He attempted 15
The ratio will be 9/15, which can be simplified to 3/5
Have a nice day :)
Answer:
A) 3/5
Step-by-step explanation:
No.of baskets attempted = 15
No.of baskets made = 9
Given, To find the ratio of no.of baskets made to no.of baskets attempted
Then,9:15 (or) 9/15
If we simplify 9/15, we get 3/5
THANKYOUPlease mark me as brainliest
what is 1/4 as a percentage
Answer:
The answer is 25%
Step-by-step explanation:
1/4=.25
.25=25%
Answer:
★ 1/4 written as a percent is 25%. To get this answer, divide 1 into 4. 1/4=0.25. Now, multiply 0.25 by 100 to get 25.
Step-by-step explanation:
Hope you have a great day :)
Which of the following relations represent a function?
A. {(-1,-3),(3,2),(3,7)}
B.{(-1,4),(2,7),(3,7)}
C.{(-3,7),(3,-7),(3,7)}
D. {(-1,4),(-1,7),(3,5)}
100 POINTS
#A
(-1,3)(3,2)(3,7)3 has two images 2,7 hence not a function
#B
(-1,4)(2,7)(3,7)Every domain has unique range hence function
#C
(-3,7)(3,-7)(3,7)3 has two images hence not a function
#4
-1 has two images hence not a function
Solve this quadratic equation by completing the square
x^2=12x+17
Answer:
[tex]\large\boxed{\red{\sf x =6+\sqrt{53},6-\sqrt{53}} }[/tex]
Step-by-step explanation:
We would like to solve the given quadratic equation by completing the square method .The given equation is ;
[tex]\longrightarrow x^2=12x +17[/tex]
Subtract 12x to both sides ,
[tex]\longrightarrow x^2-12x = 17 [/tex]
Here the co-efficient of x² is already 1 . So , we shall rewrite it as ,
[tex]\longrightarrow x^2-2(6)(x) = 17 [/tex]
Add 6² on both sides ,
[tex]\longrightarrow x^2-2(6)(x) + 6^2=17+6^2 [/tex]
Now LHS is in the form of (a-b)² = a²-2ab+b² ; so that ;
[tex]\longrightarrow (x -6)^2 = 17+36 [/tex]
Simplify RHS ,
[tex]\longrightarrow (x-6)^2=53 [/tex]
Put square root on both sides,
[tex]\longrightarrow (x-6) = \pm\sqrt{53}[/tex]
Add 6 on both sides,
[tex]\longrightarrow x = 6\pm\sqrt{53} [/tex]
Separate the two solutions ,
[tex]\longrightarrow \underline{\underline{x =6+\sqrt{53},6-\sqrt{53}}} [/tex]
And we are done!
PLEASE HELP!!!!!TIMED!!!!!! 21 MINS LEFT!!!! 30 POINTS!!!!!!!Which is the last operation performed when evaluating (8 - 2) * 4 for x=3
Answer:
Multiplication.
Parentheses comes first, regardless of PEMDAS. When you see parentheses, only the P for parentheses in PEMDAS should be your main concern.
What is the equation in slope-intercept form of the line that passes through the points (8,-10) and (0, -12)? O y=-1/4x + 12 O y = 1/4x - 12 O y = 4x + 12 O y = 4x - 12
Answer:
y=12xO+b(i think)
Step-by-step explanation:
The area of the triangle is 3 square miles.
h
2 mi.
What is the triangle's height, h?
Answer:
3 mi
Step-by-step explanation:
Use the equation for area of a triangle, A = 1/2 * base * height. Plug in the numbers you have and solve for the height, You get that 3 = 1/2 * 2 * h, and that h = 3.
Hopefully this helps- let me know if you have any questions!