solve the system by either elimination or substitution
3x-5y=21
2x+y=1
A.2,-3
B.2,3
C.-2,-1
D.-2,1
My guess is c
10 POINTS + BRAINLIEST ANSWER!!
Given the right triangle PQR below, which of the following is equal to y/x?
A. cos P
B. cos Q
C. tan P
D. tan Q
The value of tan P = y /x , Option C is the right answer.
What is a Right Angled Triangle ?A triangle in which one of the sides is 90 degree is called a Right angled Triangle.
A right angled Triangle is given in the question
The sides of the triangle is x and y
The trigonometric ratios are given and it has to be determined that x/ y represents which one of the given option.
The value of tan x = Perpendicular / Base
y/ x = Perpendicular / Base for angle P
Therefore , The value of tan P = y /x , Option C is the right answer.
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Quadrilateral ABCD is inscribed in circle O.
What is m∠B ?
Enter your answer in the box.
The measure of angle B is 125 degrees in the given quadrilateral inscribed in circle O.
In a quadrilateral inscribed in a circle, opposite angles are supplementary.
Therefore, we can set up the equation:
∠A + ∠C = 180 degrees
Substituting the given values:
(2x-7) + (x+4) = 180
Combining like terms:
3x - 3 = 180
Adding 3 to both sides:
3x = 183
Dividing both sides by 3:
x = 61
Now we can find ∠B:
∠B = 2x + 3
∠B = 2(61) + 3
∠B = 122 + 3
∠B = 125
Therefore, m∠B is equal to 125 degrees.
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What number is 32% of 75?
Which of the following equations could be used to solve the problem?
n = 0.32(75)
0.32n = 75
n = 75 ÷ 0.32
This is just a reassurance question It's
n = 75 ÷ 0.32 Right?,
Triangle ABC has vertices at A(4, 7) , B(13, 7) , and C(9, 11) .
Triangle FGH has vertices at F(1, 1) , G(10, 1) , and H(6, 5) .
Which sequence of transformations shows that triangle ABC and triangle FGH are congruent?
Select each correct answer.
A Translate triangle FGH down 6 units, and then translate triangle FGH left 3 units.
B Translate triangle FGH up 6 units, and then translate triangle FGH right 3 units.
C Translate triangle ABC up 6 units, and then translate triangle ABC right 3 units.
D Translate triangle ABC down 6 units, and then translate triangle ABC left 3 units.
The coordinates of the vertices of triangle XYZ are given in the table.
X Y Z
(0, −6) (−10, 4) (3, −1)
Triangle XYZ is reflected across the y-axis.
What are the vertices of triangle X′Y′Z′ ?
Enter your answers in the boxes.
X′ : (
,
)
Y′ : (
,
)
Z′ : (
,
)
The coordinates of the vertices of triangle XYZ are given in the table.
X Y Z
(0, −6) (−10, 4) (3, −1)
Triangle XYZ is reflected across the y-axis.
What are the vertices of triangle X′Y′Z′ ?
Enter your answers in the boxes.
X′ : (
,
)
Y′ : (
,
)
Z′ : (
,
) The coordinates of the vertices of triangle XYZ are given in the table.
X Y Z
(0, −6) (−10, 4) (3, −1)
Triangle XYZ is reflected across the y-axis.
What are the vertices of triangle X′Y′Z′ ?
Enter your answers in the boxes.
X′ : (
,
)
Y′ : (
,
)
Z′ : (
,
)
HELP PLEASE!!?!
5. The half-life of a certain radioactive material is 78 hours. An initial amount of the material has a mass of 790 kg. Write an exponential function that models the decay of this material. Find how much radioactive material remains after 18 hours. Round your answer to the nearest thousandth.,
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List the angles of triangle DEF in order from smallest to largest measure if DE = 7, EF = 9, and DF = 3.
∠D, ∠E, ∠F
∠E, ∠F, ∠D
∠F, ∠E, ∠D
∠D, ∠F, ∠E
The admission fee at the county fair is $2 for children and $4 for adults. on a certain day, 2000 people enter the fair and $5000 is collected. using c as the variable to represent the number of children and a as the variable for adults, write a system of equations to determine how many children and how many adults attended. note down this system of equations so that you can use it for the next question.
Can someone give me the answer to the question?
The single equivalent discount rate of 9/5/4 is .17008. True or False?
Subtract the linear expression: (8x + 5) - (2x- 4)
What is the area of this figure?
Enter your answer in the box.
units²
Answer:
The answer to this is 42 units²
Step-by-step explanation:
21/80 as a percentage
Please show work! Thank you
The Great Pyramids of Giza, Egypt are dedicated the following pharaohs EXCEPT ___________.
a. Khafre
b. Tutankhamen
c. Khufu
d. Menkaure,
The Great Pyramids of Giza in Egypt are dedicated to Khafre, Khufu, and Menkaure, but not Tutankhamen.
Explanation:The Great Pyramids of Giza in Egypt are dedicated to three pharaohs - Khafre, Khufu, and Menkaure. The pharaoh that is not associated with one of the Great Pyramids is Tutankhamen. Tutankhamen, also known as King Tut, ruled during the 18th dynasty of the New Kingdom but was not part of the Fourth Dynasty that built the pyramids at Giza.
Can there be a right triangle with side lenghts of 1,2,3
Expand the logarithm. log4 (3xyz)^2
Answer:
Answer is (2log2 + 2log3 + 2logx + 2logy + 2logz)
Step-by-step explanation:
log4(3xyz)²
= log4 + log(3xyz)²
= log4 + 2log(3xyz)
= log(2)² + 2[log3 + logx + logy + logz]
= 2log2 + 2log3 + 2logx + 2logy + 2logz
An instructional video is 4.2 minutes long. How long is the video in seconds? How long is it in hours?
Kareem wants to wallpaper the back wall of his bedroom. The wall is in the shape of a rectangle. Its length is
13 feet and its width is 12
feet. The wallpaper costs $8
for each square foot. How much will wallpaper cost for the wall?
The first step in solving this problem is to compute for the area of the rectangular wall. The formula in computing the area of a rectangle is:
A = LW
Substituting the given measurements in the problem to the formula:
A = 13 (12)
A = 156
Therefore, the area of the wall is 156 square feet. To compute the wallpaper cost of the wall, you have to multiply the cost per square foot to the total area.
$8 per square foot x 156 square feet = $1,248
Therefore, the wallpaper cost for the wall is $1,248
IF YOU HELP ME ILL WILL GIVE YOU BRAINLIST AND 50 PONITS HELP ME PLZZZZZ
Which statement or statements are TRUE?
I. The data distribution is skewed
II. The interquartile range is 6
III. The median is 10
A) I only
B) II only
C) I and II only
D) II and III only
I think the answer is A
Answer to question 3
What is the trigonometric ratio for cosD ?
Enter your answer, as a simplified fraction.
A student takes a true-false test that has 12 questions and guesses randomly at each answer. let x be the number of questions answered correctly. find p(x=5)
a. 0.1934
b. 0.2256
c. 0.1208
d. 0.0002
I don't understand how to do this one, any help??
Is it a.?
Please help I don’t understand it
The 9 officers of the Student Council are going on a trip to an amusement park. Each student must pay an entrance fee plus $5 for meals. The total cost of the trip is $225. Solve the equation 9(e + 5) = 225 to find the cost e of the entrance fee for each student. Question options: A) $25 B)$14 C) $45 D) $20
Answer:
The Answer to this question is $20
Step-by-step explanation:
9 x 5 = $45
225 - 45 =180
180/9 =20
One day a store sold 29 sweatshirts. White ones cost $10.95 and yellow ones cost $ 13.50. In all, $353.25 worth of sweatshirts were sold. How many of each color were sold?
HOW TO DO THIS? Find value of x
Wally buys nine books that coast $19.50 apiece. How much does Wally spend?
AD←→ is tangent to circle M at point D. The measure of ∠DMQ is 50º.
What is the measure of ∠DQM?
Answer:
Hello! I just completed the quiz :))
Step-by-step explanation:
This is for more confirmation (´｡• ᵕ •｡`) ♡ glad I could help!
Tangent is a straight line that touches the circle at any point on the curve. The measure of ∠DQM in ΔDQM is 40º.
What is a tangent?A tangent is a straight line that touches the circle at any point on the curve. And the angle made by the tangent with radius is always 90°.
We know that line AD is the tangent to circle M, and line MD is the radius of the circle, therefore, the measure of ∠ADM is 90°.
Now, In ΔDQM, the measure of ∠DMQ is 50º, while the measure of ∠MDQ is 90º. therefore, the sum of all the angles of the ΔDQM can be written as,
[tex]\angle DQM + \angle MDQ + \angle DMQ = 180^o\\\\\angle DQM + 90^o + 50^o = 180^o\\\\\angle DQM = 180^o -90^o -50^o\\\\\angle DQM = 40^o[/tex]
Hence, the measure of ∠DQM is 40º.
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