Answers
Answer:
9. [tex]x=30, y=10\sqrt{3}[/tex]
11. [tex]x=5\sqrt{3}, y=10\sqrt{3}[/tex]
Step-by-step explanation:
9)
[tex]\sin x=\dfrac{10}{20}\\x=\sin^{-1}\left( \dfrac{1}{2} \right)=30^{\circ}\\y=\sqrt{20^2-10^2}=\sqrt{400-100}=\sqrt{300}=10\sqrt{3}[/tex]
11)
[tex]\tan 60= \dfrac{15}{x}\\x=\dfrac{15}{\tan 60}=5\sqrt{3}\\y=\sqrt{(5\sqrt{3})^2+15^2}=\sqrt{75+225}=\sqrt{300}=10\sqrt{3}[/tex]
Hope this helps!
Answer:
9 for x..................
Related Questions
Please help i dont know what to do for #1 we never went over it.Help asap Please. You migjt have to flip devoce upside down to see
Answers
Answer:. GCF of first two terms is 7r^2.
GCF for last two terms is 2
Step-by-step explanation: GCF means the largest number that the terms can be divided by evenly.
7 and 14 are both divisible by 7. The factors of those terms are (7r^2)(r +2).
r^3 means r × r × r. r^2 means r × r so r^2 is a factor of r^3
2r and 4 are both divisible by 2. The factors of those terms are (2)(r +2)
What is the sum? …...
Answers
............................
Find the length of a diagonal of a square if its area is 162 square feet.
Answers
Answer:
9sqrt(2) ft or 12.73 ft
Step-by-step explanation:
A = L^2
sqrt(162) = 9sqrt(2)
The diagonal of a square is equal to the side length.
How can you use ratios using fractions?
Answers
To convert a fraction to a ratio, first write down the numerator, or top number. Second, write a colon. Thirdly, write down the denominator, or bottom number. For example, the fraction 1/6 can be written as the ratio 1:6. Another example, the fraction 2/3 can be written as the ratio of 2:3.
I hope this helps you!!!!!
can someone please help me!!
Answers
Answer:
c÷4=35
Step-by-step explanation:
cost as a whole divided by 4 friends.
Answer:
c/4=$35
Step-by-step explanation:
35(4)=c, so c/4=35
What is 9.81 million in scientific notation ?
Answers
Answer:
9.81*10 (you have to add that tiny six next to the 0)
Step-by-step explanation:
Answer:
9.81 x 10^6
If f(x) = 3x + 7, find:
f(-2) = [ ? ]
Answers
Answer:
1
Step-by-step explanation:
Plug in -2.
f(x) = -6+7
f(x) = 1
The value of the given function when x is -2 is 1.
What is a function?A function is defined as a relation between a set of inputs having one output each.
Given a function, f(x) = 3x + 7
Put x = -2.
f(-2) = -6+7
f(-2) = 1
Hence, The value of the given function when x is -2 is 1.
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(5ab-4a-8) - (9ab-5)
Answers
Answer:
Step-by-step explanation:
-4a-4ab-3
Answer:
-4ab+-4a+-3
Step-by-step explanation:
(5ab-4a-8)-(9ab-5)
distribute the negative sign
=5ab-4a-8+-1(9ab)+(-1)(-5)
=5ab+-4a+-8+-9ab+5
combine like terms
=(5ab+-9ab)+(-4a)+(-8+5)
=-4ab+-4a+-3
17. The Cruz family is buying a custom-made cover for their swimming pool, shown below. The cover costs
$2.95 per square foot. How much will the cover cost? Round to the nearest cent.
25 tt
a
$2,627.56
c. $1,627.56
b. $1,467.56
d. $1,212.89
Answers
Answer:
The answer is is
C. $1,627.56
Step-by-step explanation:
The question is incomplete,
Kindly find attached the diagram of the poll for the dimension for your reference.
we need to first calculate the area of the pool.
Let's begin by calculating the area of the rectangular shape
A= length x width
A= 25*15
A=375ft²
Secondly the two semi circles can be solved for as a whole circle
Area of circle = πr²
Radius r= diameter/2= 15/2= 7.5ft
Area = 3.142*7.5²
A= 3.142*56.25
A= 176.7375ft²
Total surface area pool =
176.7375+375= 551.7ft²
Given that a square foot is $2.95
Hence the cost of covering the pool is 551.7*2.95=$1,627.515
What value(s) of x make the following expression undefined? x^2+ 1
2x − 4
Type only value(s) that should be excluded from the solution set.
Answers
Answer:x=2
Step-by-step explanation: 2x-4=0
2x-4=0
+4 +4
2x=4
2x/2=4/2
X=2
2 horizontal and parallel lines are intersected by 2 diagonal lines to form a triangle with exterior angles. The top angle of the triangle is (2 x + 10) degrees. The bottom right angle of the triangle is 79 degrees. The exterior angle to the bottom left angle is (6 x + 1) degrees. What is the value of x? x = 2.25 x = 11.25 x = 13 x = 22
Answers
Answer:
11.25
Step-by-step explanation:
8x+11=180-79
8x+11=101
8x=90
x=11.25
By angle sum property the value of x in the expression (2 x + 10) + (6 x + 1) +79 =180 is 11.25
What is the angle sum property?The angle sum property of a triangle states that the sum of the interior angles of a triangle is 180 degrees.
2 horizontal and parallel lines are intersected by 2 diagonal lines to form a triangle with exterior angles.
The top angle of the triangle is (2 x + 10) degrees. The bottom right angle of the triangle is 79 degrees.
The exterior angle to the bottom left angle is (6 x + 1) degrees.
By angle sum property
(2 x + 10) + (6 x + 1) +79 =180
8x+11 + 79 =180
8x+11=180-79
8x+11 =101
8x = 90
x = 11.25
Learn more about the triangles;
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help
please help me.
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Answers
If Paul answer six questions out of 15 test questions correctly what percent of his test questions did he answercorrectly
Answers
So the right answer is 40%
look at the attached picture
Hope it will help you
Good luck on your assignment
pls help quick will mark as brainliest
The measure of a central angle is 3 x + 18, and the measure of its arc is 147°. Which equation can you use to find the value of x ?
A) 2(3 x + 18) = 147°
B) 3 x + 18 = 2(147°)
C) 3 x + 18 = 147°
Answers
Answer:
C
Step-by-step explanation:
The central angle is equal to the measure of the arc that subtends it, thus
3x + 18 = 147 → C
Answer: C.) 3x + 18=147
hoped this helped
:)
Triangle ABC is the pre-image and Triangle ADE is the image. What transformation took place?
a. Reflection
b. Translation
c. Dilation
d. Rotation
Answers
Answer:
translation...........
Answer:
Dilation
Step-by-step explanation:
A dilation is a type of transformation that changes the size of the image. The scale factor measures how much larger or smaller the image is.
In this example, ΔABC is dilated as seen in the picture because it the picture itself got bigger.
The image, ΔADE is now a dilated version of the pre-image ΔABC
There is an attachment provided to support this answer.
А
B
(4x + 5)
Quadrilateral ABCD is inscribed in a circle,
What is the measure of angle A?
Enter your answer in the box
(x + 15)
mŁA =
Answers
Answer:
mLA=133 degrees
Step-by-step explanation:
4x+5+x+15=180
5x+20=180
5x=160
x=32
4(32)+5=128+5=133
Which equation represents the line that passes through the points (-4, 10) and (-8, 9)?
Answers
Explanation:
= Y=1/4x+11
= 10= 1/4(-4)+11
= true
Can y’all find the missing side length so that their similar figures
Answers
Answer:
1. x = 9.75,
2. x = 36,
3. x = 12
Step-by-step explanation:
See attachment below;
What is the quotient of 91.5 ÷ 2.44?
Answers
Answer:
37.5
Step-by-step explanation:
Can you help me? I am confused this is a hard question for me
Answers
Answer:
960, 160 for each face / base
Step-by-step explanation:
Hugo reflects a vector v across the line y = –x. Nemo rotates a vector v 180° counterclockwise about the origin. Which of the following vectors would have the same image for Hugo and Nemo?
Answers
Answer:
The (3, 3) one
Step-by-step explanation:
i did the exam and got it right ;)
The vectors that have the same image for Hugo and Nemo are [3, 3].
What is Graph?Graph is a mathematical representation of a network and it describes the relationship between lines and points.
To find the reflection of a vector v across the line y = -x, we can use the formula:
reflection(v) = R×v × R
where R is the reflection matrix given by:
R = [0 1]
[1 0]
To find the rotation of a vector v by 180° counterclockwise about the origin, we can use the formula:
rotation(v) = Rθ × v
where Rθ is the rotation matrix given by:
Rθ = [-1 0]
[0 -1]
Let's apply these transformations to each vector and see which ones have the same image for both Hugo and Nemo:
Reflection(d) = R × d × R = [0 1] × [3, 3] × [0 1] = [3, 3]
Rotation(d) = Rθ × d = [-3, -3]
These two vectors are equal.
Therefore, the vectors that have the same image for Hugo and Nemo are [3, 3].
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PLZ I NEED HELP WITH THIS PROBLEM!
Answers
Answer:
Q3= 66.5
Step-by-step explanation:
median= 61.5
Q1= 56.5
Q3= 66.5
(65+68)/2= 66.5
Giving brainliest to whoever helps me.
Answers
Answer:
w = 2.5 cm
Step-by-step explanation:
The area (A) of the triangle is calculated as
A = [tex]\frac{1}{2}[/tex] bh ( b is the base and h the height )
Here b = 5 and h = 6, thus
A = 0.5 × 5 × 6 = 15 cm²
Thus the area of the rectangle is 15 cm²
A = lw ( l is the length and w the width )
Here l = 6 and w is to be found
6w = 15 ( divide both sides by 6 )
w = 2.5 cm
Zachary used the calculations shown to find how much he would spend on 16 ounces of pistachios.
6 ounces of pistachios cost $7.50
StartFraction 7 dollars and 50 cents Over 6 ounces EndFraction = StartFraction dollar-sign question mark Over 1 ounce EndFraction
Unit price = $0.80 per ounce
(16 ounces) (StartFraction 80 cents Over 1 ounce EndFraction) = 12 dollars and 80 cents
What was his first error?
Answers
Answer:
He made a math error
Step-by-step explanation:
6 ounces of pistachios cost $7.50
take 7.50 / 6=1.25 per ounce ( not .80 per ounce)
Then 1.26 * 16 = 20.00 for 16 ounces
Answer: B
Step-by-step explanation: The price per ounce should have been $1.25 per ounce.
I hope this helps! °ω°
Someone plz help fast will give brainiest
Answers
Answer:
$5
Step-by-step explanation:
The bill was $15 extra this month so 15 divided by 3 is 5.
Can somebody answer this.
Answers
Answer:
J-12-16KL(-12, -16)MOSorry. I cannot really the points and graphs clearly.
I hope I helped you! If my answer is correct, please mark me brainiest. Thanks!
Marco measured the height of his snowman at the beginning of the week and again after five days. The change in height was -10 inches. How much did the snowman shrink per day?
Answers
Answer:
-2 inches
Step-by-step explanation:
Change in height: -10 inches
Days over which change noticed: 5 days
Change per day: -10÷5= -2 inches
The snowman shrank -2 inches per day.
Nadine promised to meet her friend at a store but she forgot which store. There are five
stores in town. What is the probability that Nadine will go to the right store first?
B
0.20
A
0.16
D
1.00
С
0.80
Answers
Answer:
.2 chance of going to the right store
Step-by-step explanation:
Five stores, and she is to meet a friend at one. One store is the right one so it is 1 out of 5, or 1/5. This equals 20%
In decimal it is a .2 chance of Nadine going to the right store
Hope this helps!
in 2009, a gullop poll found that 47% of Americans favored protection of the environment at the risk of limiting energy supplies, while 46% favored the development of u.s energy supplies even if that risked harming the environment. Another 3% felt that energy and the environment were equally important. a) based on the poll, whats the probability a person had "no opinion"? b) Whats the probability of that a respondent rated protecting the environment as equally important or more important than developing energy sources
Answers
Answer:
your
Step-by-step explanation:
welcome
Find the 4th term of the expansion of (a - sqrt(2)) ^ 8
Answers
Answer:
Applying the binomial theorem
[tex]{\displaystyle (x+a)^{n}=\sum _{k=0}^{n}{n \choose k}x^{n-k}a^{k}}[/tex]
Here we have x = -[tex]\sqrt{2}[/tex], n = 8,
=> 4th term (k = 3) would be:
[tex]{8 \choose 3}x^{8-3}a^{3}} = {8 \choose 3}(-\sqrt{2})^{5}a^{3}} = -224a^{3}\sqrt{2}[/tex]
Hope this helps!
:)
Answer:
A
Step-by-step explanation: