Answers
Answer:
XY is a tangent
Step-by-step explanation:
Given
[tex]XY = 12[/tex]
[tex]WY = 20[/tex]
[tex]WZ = 8[/tex]
Required
Is XY a tangent?
XY is a tangent if:
[tex]WY^2 = XY^2 + WX^2[/tex]
Because XY should make a right angle at point X with the circle
Where
[tex]WX = 2 * WZ[/tex]
So, we have:
[tex]WY^2 = XY^2 + WX^2[/tex]
[tex]WY^2 = XY^2 + (2*WZ)^2[/tex]
[tex]WY^2 = XY^2 + (2WZ)^2[/tex]
[tex]WY^2 = XY^2 + 4WZ^2[/tex]
This gives:
[tex]20^2 = 12^2 + 4*8^2[/tex]
[tex]400 = 144 + 256[/tex]
[tex]400 = 400[/tex]
Yes, XY is a tangent
Related Questions
Can someone please help me? If you cannot think of anwer, leave me alone aight?
I need somebody to explain why the surface area of the cylinder in the image is
351.86 square inches. Yes, i know the answer but still clueless how to solve for that. (There was a test and I got the answer wrong then it revealed the right answer)
Will mark brainliest if someone truly helps me.
Answers
Answer:
Formula for to find out the surface area of a cylinder = 2πrh+2πr^2
As the radius of the cylinder (4/2) cm = 2cm
Then the surface area of the cylinder
= 2πrh + 2πr^2
=( 2×22/7×2×6 + 2×22/7 × 2^2) cm^2
= (528/7 + 176/7) cm^2
= 704/7 cm^2
=100.571428571 cm^2
=15.58860260571021 in^2 (ans)
This the answer
Evaluate f(x) = 2x - 7 when x = 8.
Answers
Answer:
9
Step-by-step explanation:
Substitute 8 in place of x
f(x) = 2*8-7
f(x) = 9
Answer:
9
Step-by-step explanation:
plug in 8 where x is so it would look like
2(8)-7 = 9
do 2 *8 first which is 16
then do 16-7 which gives you 9
A leaf blower was marked up 150% from an original cost of $80. Last Friday, Lee bought the leaf blower and paid an additional 7.75% in sales tax. What was his total cost?
Answers
Answer:
215.50
Step-by-step explanation:
i got it correct
Answer:
The total cost Lee paid is 129.3 dollar
Step-by-step explanation:
What is marked up ?The percentage amount by which the cost of a product is increased to arrive at the selling price.
Its given that, original cost is 80 dollar.
Hence, leaf blower marked up = 150%
So, the profit the leaf blower making = 150 % or 1.5
Thus, the total selling price
= [tex]80*\frac{150}{100}[/tex]
= 80 * 1.5
= 120 dollar
Now, the rate of sales tax is 7.75%
So, selling price after applying sales tax be
= 120 * [tex]\frac{7.75}{100}[/tex]
=120 * 0.0775
= 9.3 dollar
Hence the total cost be
= 120 + 9.3
= 129.3 dollar
The total cost Lee paid is 129.3 dollar.
Learn about taxes here:
https://brainly.com/question/19715580
#SPJ2
CAN SOMEONE PLEASE HELP ME?? ASAP!!
Answers
Answer:
16. 0.57735
17. −0.707107
18. 0.5
19. 0.5
20. 2.61799387
21. 1.15470053
A woman is thrice as old as her daughter. 12 years hence, she will be twice as old as her daughter find their present age.
help me
with explanation !!!
Answers
Answer:
Their present ages are:
Her daughter's age = 12 years Women's age = 36 yearsStep-by-step explanation:
Given that:
A woman is thrice as old as her daughter. 12 years hence, she will be twice as old as her daughter.To Find:
Their present ages.Let us assume:
Her daughter age be x. Women's age = 3xAfter 12 years:
Her daughter's age = x + 12Women's age = 3x + 12Finding their present ages:
According to the question.
⇒ 3x + 12 = 2(x + 12)
⇒ 3x + 12 = 2x + 24
⇒ 3x - 2x = 24 - 12
⇒ x = 12
Their present ages:
Her daughter's age = x = 12 years Women's age = 3x = (3 × 12) = 36 yearsIf f(x)=2x^2+5 square root (x-2) what does f(3)=?
Answers
Answer:
f(3) = 23
Step-by-step explanation:
Degree and Radian Measures
What is the radian equivalent of 90°?
a. π/4
b. π/3
c. π/2
d. π/5
Please select the the best answer from the choices provided
Answers
Answer:
C. π/2
Step-by-step explanation:
I calculated it logically
If angle 4 is 25°, what is the measure arc FBE?
Answers
9514 1404 393
Answer:
310°
Step-by-step explanation:
Angle 4 is half the measure of arc FE, so that arc has measure ...
FE = 2·(25°) = 50°
Long arc FBE has the measure that completes the circle:
FBE = 360° -50° = 310°
Which function is shown in the table below?
(1) f(x) = 3x
(2) f(x) = x+3
(3) f(x) = -x^3
(4) f(x) = 3^x
Answers
Answer:
4. f(x)=[tex]3^{x}[/tex]
Step-by-step explanation:
Sorry if I'm wrong
V=_mº
Find the Volume of the right prism. (Only type the number, NOT the units!)
4 m
6 m
2.8 m
Answers
I'm guessing the length is 4, the width is 6 and the height is 2.8,
67.2 is the answer and the units are m^3
Solve the problem
2-1
Answers
Answer:
2-1
= 1
Mark me brainliesttt :))
xD
But pls do.
Which of the inequalities below has 3.5 in its solution set?
a) 10x>44
b) 4x<12
c) 5x >16
d) 3x <10
Math Homework 7th Grade
Answers
Answer: C
Step-by-step explanation:
5 × 3.5 = 17.5 > 16 .
A music store sells both electric and
acoustic guitars. One month, the store
sold 12 electric guitars. If that was 60%
of their sales for the month, how many
guitars did they sell that month in all?
Answers
Answer:
sorry :/ im not sureee but they would have sold 20
Step-by-step explanation:
They sold 20 guitars that month.
Step-by-step explanation:
[tex] \frac{12 \times 100}{60} = total[/tex]
[tex] \frac{1200}{60} = 20[/tex]
You and 3 friends are going to the County Fair.
You have a coupon that will save your group
$20. If the total bill to get into the fair was
$100, how much does one regular price ticket
to the fair cost?
Answers
Answer:
$120
Step-by-step explanation:
Since after $20 coupon, the price become $100, then before it was
(20 + 100) = $120
Thenks and mark me brainliest :)
Answer:
One regular price ticket cost $40
Step-by-step explanation:
First yo would have to add back the $20 that they saved to the total which would be $120 total and then since that was the total for all 3 of them you would do $120 divided by 3 which would be $40 for each ticket regularly.
ASAPSPASPDAPASPP PLEASE HELP SHOW WORK PLS PLS PLSP PLSDPSLPSLSP
Answers
Answer:
1. 3 sqaure root 7
Step-by-step explanation:
Use the app photo math. Its free
Another name for a hexahedron is O A. cube O B. cylinder O C. pyramid O D. equilateral triangle
Answers
I NEEED SOMEBODY TO HELP ME OUT WITH THIS QUESTION THXS
Answers
Answer:
The answer is less than that is the answer
True or False
72 - ( - 100) is negative.
Answers
Answer:
false
Step-by-step explanation:
72 - (-100) --> two negatives turn into a positive
72 + 100
Which of the following is NOT a way to describe slope? *
the change in y divided by the change in x
rise over run
the initial value
the rate of change
Answers
Answer:
rise over
Step-by-step explanation:
Answer:
correct answer: the initial value
A circle has a diameter of 10 centimeters.
What is the best approximation of its area?
Use 3.14 to approximate for π.
15.7 cm²
31.4 cm²
78.5 cm²
314 cm²
Answers
Answer:
78.5 (please put brainliest)
Step-by-step explanation:
r = diameter / 2 = 5
area = π * r^2 = 25 * 3.14 = 78.5
Answer:
78.5 m^2
Step-by-step explanation:
What kind of triangle would angels of 24, 52 and 104 degrees?
Answers
Answer:
There are 180 degrees in the 3 angles of a triangle.
Step-by-step explanation:
3 toys cost x kobo. How many toys can be bought with #3.00?
Answers
Answer:
ok so you say I don't know for 10000000000 year's the end. :)
Which of the following is most likely the next step in the series
Answers
Answer:
A
Step-by-step explanation:
The pattern is blue red blue red
+
The pattern is vertical horizontal vertical horizontal
Answer:
A.
The second figure adds another red horizontal line to the first. The third adds a vertical blue line to the second. The fourth must add a red horizontal line to the third.
Given a feedlot of about 2500 cows, if an individual cow produces about 40 liters of manure per day, how many kiloliters of manure would be produced in one month?
Answers
9514 1404 393
Answer:
3000 kL
Step-by-step explanation:
(2500 cows)(40 L/day/cow)(30 day/mo)(1 kL/(1000 L)) = 2.5×40×30 kL/mo
= 3000 kL/mo
About 3000 kL of manure would be produced in one month.
___
That's about 3 cubic meters.
-20-x=-27 what is x?
Answers
Answer:
[tex]x = 7[/tex]
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
If f(x)=1−x^2 +x^3 , then f(−1)=
Answers
Answer:
f(-1) = -1
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
FunctionsFunction NotationStep-by-step explanation:
Step 1: Define
Identify
f(x) = 1 - x² + x³
f(-1) is x = -1 for the function f(x)
Step 2: Evaluate
Substitute in x [Function f(x)]: f(-1) = 1 - (-1)² + (-1)³Exponents: f(-1) = 1 - 1 - 1Subtract: f(-1) = -1Given the definitions of f (x) and g(x) below, find the value of f(g(-6)).
f(x) = x² – 2x +9
g(x) = -3x – 14
Answers
Answer:
17
Step-by-step explanation:
Choose all of the zeros of the function f(x) = 2x² + 5x – 3.
-3, -0.5, 0.5, 1, 3 << those are the answer choices.
Answers
Answer:
-3. and -0.5
Step-by-step explanation:
i hope that helps
what is AC? pls help 30 points if u awnser
Answers
Answer:
C. 6
Step-by-step explanation:
ΔADC and ΔACB are similar because two of their angles are congruent (∠ACD and ∠ABC, and ∠DAC and ∠CAB)
Because the sides are similar, you can create a proportion
[tex]\frac{AC}{AD}=\frac{AB}{AC}[/tex]
substitute the given values for the sides. AD=4 and AB=4+5=9
[tex]\frac{AC}{4}=\frac{9}{AC}[/tex]
cross multiply
[tex]AC^{2} =36[/tex]
take the square root of both sides
AC=6
An item on sale costs 40% of the original price. If the original price was $45, what is the sale price?
Answers
========================================================
Work Shown:
40% = 40/100 = 0.40
40% of 45 = 0.40*45 = 18
The sale price is $18. You save 45-18 = 27 dollars.
Note how 27/45 = 0.60 = 60%, meaning you got a 60% discount. Furthermore, note how 60% + 40% = 100%. So if you get a 60% discount, you still have to pay 40% of the original price.
