What is the radius of a circle whose equation is x2 + y2 + 8x - 6y + 21 = 0?
units
Answers
Answer:r=2
Step-by-step explanation:
Answer:
A) 2
Step-by-step explanation:
I got it right on edge 2020.
Hope it helps :)
I purple you have a good year, stay safe.
Related Questions
What two numbers multiplies to -51 and adds to -14?
Answers
Answer: -17 and 3
Step-by-step explanation:
First try and find numbers that are divisible by -51 and see if they work. Then you'll find -17, leading to you multiplying -17 with 3, then you get -51, and if you add them, then you get -14.
2 with an exponent of -2
Answers
Answer:
0.25
Step-by-step explanation:
2^-2=0.25
What’s 2percent of 300
Answers
Answer:
6
Step-by-step explanation:
2%=0.02
0.02*300=6
Which of the following must be true in order for SAND to be in a rhombus? Select all that apply
Answers
a) Consecutive sides must be congruent, for SAND to be in a rhombus
For the word "SAND" to form a rhombus, certain conditions must be met based on the properties of a rhombus:
a) Consecutive sides must be congruent: True. In a rhombus, all sides are congruent, so consecutive sides must also be congruent.
b) Diagonals do not bisect the angles: False. In a rhombus, the diagonals bisect the angles. This is a property of rhombuses.
c) All interior angles add up to 360: False. In a rhombus, all interior angles are equal, but their sum is not necessarily 360 degrees. However, the sum of all interior angles in any quadrilateral (including a rhombus) is indeed 360 degrees.
Therefore, the correct statement is:
a) Consecutive sides must be congruent
Construct a triangle ABC where BC =4cm ,B=60° and AB+AC=6cm
Answers
Answer:
Below is the step-by-step explanation.
Step-by-step explanation:
To determine:
Construct a triangle ABC
Information Fetching and Information Steps:
From the given data,
[tex]BC\:=\:4\:cm[/tex][tex]B=60^{\circ }[/tex][tex]AB+AC=6\:cm[/tex]Procedure:
First draw a line segment [tex]BC\:=\:4\:cm[/tex]Then construct angle of [tex]m[/tex] ∠ [tex]60^{0}[/tex] at [tex]B[/tex] on [tex]BC[/tex].Taking [tex]B[/tex] as center with [tex]6\:cm[/tex] radius, draw an arc which cuts the ray of [tex]m[/tex] ∠ [tex]60^{0}[/tex] at [tex]X[/tex].Then Join [tex]X[/tex] and [tex]C[/tex].The draw a perpendicular bisector of [tex]XC[/tex].Wherever this perpendicular bisector intersect [tex]BX[/tex], name that point as [tex]A[/tex]Join [tex]A[/tex] and [tex]C[/tex].Thus, ∆ [tex]ABC[/tex] will be a required triangle.
Keywords: triangle, perpendicular bisector, angle
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Mr. Sam's swimming pool is in the shape of a parallelogram, as shown.
What is the area of his swimming pool?
A. 189 ft²
B. 234 ft²
C. 279 ft²
D. 585 ft²
Answers
Answer:
234 ft²
Step-by-step explanation:
Area of parallelogram = base x height
in our case, base length = 26 feet and height = 9 feet
hence,
Area of parallelogram = 26 x 9 = 234 ft²
Answer:
234 ft²
Step-by-step explanation:
I just finished the test and I got 100% correct.
Which number line represents the solutions to |x – 5| = 1?
Answers
Answer:
x = 4, 6
Step-by-step explanation:
The line would go from 4 to 6 with closed circles at each point
(Add images of the lines provided if you need clarification)
If A = {1, 2, 4} and B = {2, 4, 6, 8, 10}, find A ∩ B.
1. {1, 6, 8, 10}
2. {}
3. {2, 4}
4. {1, 2, 4, 6, 8, 10}
Answers
A∩B = {2, 4}
Step-by-step explanation:
Step 1: Given A = {1, 2, 4} and B = {2, 4, 6, 8, 10}Step 2: To find A∩B, find the number of common elements in both the sets.⇒ A∩B = {2, 4}
12abx square - (9a square - 8b square)x - 6ab =0
Answers
The value of x is [tex]\frac{3a}{4b}[/tex] and [tex]-\frac{2b}{3a}[/tex]
Explanation:
The expression is [tex]12abx^{2} -(9a^{2} -8b^{2} )x-6ab=0[/tex]
Multiplying the term x withing the bracket, we get,
[tex]12abx^{2} -9a^{2} x+8b^{2} x-6ab=0[/tex]
Grouping the terms, we have,
[tex](12abx^{2} -9a^{2} x)+(8b^{2} x-6ab)=0[/tex]
Taking out the common terms in each bracket, we get,
[tex]3ax(4bx -3a)+2b(4bx-3a)=0[/tex]
Simplifying, we get,
[tex](3ax+2b)(4bx -3a)=0[/tex]
Equating each term to zero, we get,
[tex]\begin{aligned}3 a x+2 b &=0 \\3 a x &=-2 b \\x &=-\frac{2 b}{3 a}\end{aligned}[/tex] and [tex]\begin{aligned}4 b x-3 a &=0 \\4 b x &=3 a \\x &=\frac{3 a}{4 b}\end{aligned}[/tex]
Hence, the values of x is [tex]\frac{3a}{4b}[/tex] and [tex]-\frac{2b}{3a}[/tex]
Ben bowled 121 and 184 in his first two games. What must he bowl in his third game to have an average of at least 170?
Answers
Answer:
205
Step-by-step explanation:
Were gonna start by writing an equation (121+184+x)/3=170 because were adding a 3rd value to the average and x is going to be our value that were looking for. If you solve that, you get 205. Hope this helps.
For Ben to have an average of at least 170 in his third game, he must bowl a score of 205.
Explanation:To find out what Ben must bowl in his third game to have an average of at least 170, we can use the formula for average: average = total score/number of games.
In this case, Ben has played two games and wants to have an average of 170. So we can set up the equation: 170 = (121 + 184 + x) / 3, where x represents his score in the third game.
To solve for x, we can multiply both sides of the equation by 3 to get rid of the fraction: 510 = 121 + 184 + x.
Then, we can combine the numbers on the right side: 510 = 305 + x.
Finally, subtracting 305 from both sides gives us: 205 = x.
Therefore, Ben must bowl a score of 205 in his third game to have an average of at least 170.
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You roll a pair of fair dice. Classify the probability for each of the outcomes as Impossible, Unlikely, Likely, or Certain.
Answers
Answer:
THE DIFFERENCE OF THE NUMBERS IS 6~ likely
THE SUM ON EACH DIE IS 5~ unlikely
THE NUMBER ON EACH DIE IS A WHOLE NUMBER~ Certain
THE NUMBER ON EACH DIE IS LESS THAN 6~ likely
THE SUM OF THE NUMBERS IS 14 OR GREATER~ impossible
What’s 6 1/4 minus 2 3/4
Answers
Answer: 3.5
Step-by-step explanation:
yes
a. The seats are divided into 40 different sections thats are given in only 5 sections, what
is the probability of a guest's sitting in a section that gets a hat?
Answers
Consider the function f(x)=x3+6x2−20x+450.
What is the remainder if f(x) is divided by (x−12)? Report your answer as a number only. Do not include (x−12) in your answer.
Answers
Answer:
Therefore reminder = 2802
Step-by-step explanation:
f(x)=x³+6x²-20x+450
x-12)x³+6x²-20x+450(x²+18x+196
x³-12x²
____________________
+18x²-20x+450
18x²-216x
_______________
196x +450
196x-2352
_____________
2802
Therefore reminder = 2802
An image point of a transformation has coordinates Y'(2, -4). If the pre-image point had coordinates Y(6, -12), what was the transformation and scale factor?
reflection with scale factor 3
reflection with scale factor 1/3
dilation with scale factor 3
dilation with scale factor 1/3
Answers
Answer:
Therefore the correct answer is the fourth one d.) dilation with scale factor 1/3
Step-by-step explanation:
i) the pre-image co-ordinates is Y(6, -12)
ii) the coordinates of the image is Y' (2, -4)
iii) therefore we can clearly see that if we divide the coordinates of the pre-image (6,-12) by 3 then we get the coordinates of the image(2,4).
Therefore this is a dilation with scale factor of 1/3.
Therefore the correct answer is the fourth one d.) dilation with scale factor 1/3
Final answer:
The transformation from the pre-image point Y(6, -12) to the image point Y'(2, -4) is a dilation with a scale factor of 1/3.
Explanation:
Given an image point Y'(2, -4) of a transformation and the pre-image point Y(6, -12), we can determine the type of transformation and the scale factor. The transformation is a type of change that affects the position, size, or shape of a figure. To find out the type of transformation and the scale factor, we compare coordinates.
Since the x-coordinate changed from 6 to 2, it has been reduced by a factor of 3 (6 divided by 3 equals 2). The y-coordinate changed from -12 to -4, which also has been reduced by a factor of 3 (-12 divided by 3 equals -4). This consistent reduction indicates that the transformation is a dilation. The objects are shrunk uniformly in both dimensions by the scale factor.
The correct answer is therefore dilation with scale factor 1/3.
The population of deer in a given park is modeled by y = d(x) = A( 1 2 )x + B, where x is the elapsed time in years since 2019. According to the model, which is the best prediction of the number of deer in the park in 2099?
A) A
B) B
C) A + B
D) A − B
Answers
Answer:
Step-by-step explanation:
The answer is B) B :)
Answer:
The answer is B
Step-by-step explanation:
According to USA Test prep it says so, but i didn't quite get the explanation so bear with me. Thank you :)(:
Find the area of the figure.( sides meet at right angles)
Answers
Solve this system using any method (substition elimination) Thank you!!!
x - y = -3
-4x + y = -18
Answers
Answer:
look at the picture shown
12 years ago left it was twice as old as Hester Lester is 21 years older than Hester what would be the sun in 5
Answers
Answer:
The sum of their ages in 5 years will be 97 years
Step-by-step explanation:
The correct question is
Twelve years ago, Lester was twice as old as Hester. Lester is 21 years older than Hester. What will the sum of their ages be in 5 years?
Let
x ----> Lester's age
y ----> Hester's age
we know that
Twelve years ago, Lester was twice as old as Hester
so
[tex]x-12=2(y-12)[/tex]
[tex]x-12=2y-24[/tex]
[tex]x-2y=-12[/tex] ----> equation A
Lester is 21 years older than Hester
so
[tex]x=y+21[/tex] ----> equation B
substitute equation B in equation A
[tex]y+21-2y=-12[/tex]
solve for y
[tex]-y=-12-21\\-y=-33\\y=33[/tex]
Find the value of x
[tex]x=33+21=54[/tex]
therefore
Lester's age is 54 years and Hester's age is 33 years
The sum of their ages in 5 years will be
[tex](54+5)+(33+5)=97\ years[/tex]
Please help!!!!
a + b = 10
a - b = 2
Solve the system of equations.
A) a = 5, b = 5
B) a = 2, b = 8
C) a = 6, b = 4
D) a = 3, b = 7
E) a = 12, b = -2
Answers
Answer:
C) a = 6, b = 4
Step-by-step explanation:
6 + 4 = 10
6 - 4 = 2
To solve the system, we first add both equations to find 'a = 6'. Then, substitute 'a' in one of the original equations to get 'b = 4'. The solution is 'a = 6' and 'b = 4', corresponding to answer choice C).
Explanation:To solve the system of equations:
a + b = 10a - b = 2We can add the two equations to eliminate the variable b. By adding them, we get:
2a = 12
Divide both sides of the equation by 2:
a = 6
With the value of a known, substitute a = 6 into either of the original equations. For example, substituting it into the first equation:
a + b = 10
6 + b = 10
b = 10 - 6
b = 4
Therefore, the solution to the system of equations is a = 6 and b = 4, which corresponds to answer choice C).
which is 9.5 expressed as a fraction in simplist form
A.19/2
B.46/5
C. 86/9
D.64/7
Answers
Answer:19/2
Step-by-step explanation:
19/2=9.5
Other are not in its very simplest form
Answer:
19/2
Step-by-step explanation:
The other answers are not in the simplest form!
How many 1/5 liter glasses can Lin fill with a 1 1/2 liter bottle of water?
Answers
Answer:
The number of 1/5 liter glasses that Lin can fill is [tex]7\frac{1}{2}[/tex]
Step-by-step explanation:
we know that
To find out how many 1/5 liter glasses can Lin fill with a 1 1/2 liter bottle of water, divided 1 1/2 by 1/5
so
[tex]1\frac{1}{2} :\frac{1}{5}[/tex]
Convert mixed number to an improper fraction
[tex]1\frac{1}{2}=1+\frac{1}{2}=1\frac{1*2+1}{2}=\frac{3}{2}[/tex]
substitute
[tex]\frac{3}{2} :\frac{1}{5}[/tex]
Multiply in cross
[tex]\frac{5*3}{2*1}=\frac{15}{2}=7.5[/tex]
Convert to mixed number
[tex]7.5=7+\frac{1}{2}=7\frac{1}{2}[/tex]
Lin can fill 7.5 glasses of water from a 1 1/2 liter bottle. However, if only full glasses are counted, Lin can fill 7 full glasses.
Explanation:The question asks how many 1/5 liter glasses can be filled with a 1 1/2 liter bottle of water. To answer this, we need to perform a division of the total volume of the water by the volume of each glass.
First, express both quantities in the same units, in liters. The bottle has 1 1/2 liters, which is the same as 1.5 liters. Now, divide the total volume of the water by the volume of one glass:
1.5 liters / (1/5 liter per glass) = 1.5 * 5 = 7.5 glasses.
Therefore, Lin can fill 7.5 glasses of water from a 1 1/2 liter bottle, if we consider that partial glasses can be filled. If only full glasses can be filled, Lin can fill 7 full glasses.
A survey of 260 families show that 99 had dog 76 had cat 34 had dog and cat 98 had neither a cat nor a dog nor a parakeet 8 had a cat a dog and a parakeet
Answers
The number of parakeet is 21.
The calculation is as follows:
Let us assume the families had parakeet only be X
A survey of 260 families show that:
The families had a dog and a cat only it means
= 34 - 8
= 26
The families had a dog only is
= 99 - (26 + 8 )
= 65
The families had a cat only is
= 76 - (26 + 8)
= 42
So,
X = 260 - ( 98 + 8 + 26 + 65 + 42 )
= 260 - 239
= 21
Therefore, the families had a parakeet only is 21.
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The question pertains to the analysis of survey data relating to pet ownership among a set of families. It requires understanding of data analysis in mathematics.
Explanation:The question is about finding the total number of families that have each specified type of pet (dogs, cats, both dogs and cats, or a dog, a cat, and a parakeet). The given data from the survey states that among the 260 families:
99 had a dog 76 had a cat 34 had both a dog and a cat 98 had neither a dog nor a cat nor a parakeet 8 had a dog, a cat, and a parakeet
Using this data, you can compute and analyze the number of families owning each type of pet or combination of pets. It's important to understand that some families may fall into multiple categories - for example, families with a dog and a parakeet would count both towards the 'dog' total and the 'dog, cat, and parakeet' total.
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Please answer the question in the photograph
Answers
Question 7 Aya and Kendra want to estimate the height of a tree. On a sunny day, Aya measures Kendra's shadow as 3 meters long, and Kendra measures the tree's shadow as 15 meters long. Kendra is 1.5 meters tall. How tall is the tree?
A.7.5 meters
B.22.5 meters
C.30 meters
D.45 meters
Answers
Pirate Jack has an equal number of gold and silver coins. If Pirate Jack splits all of his coins into 7 equal piles for his parrots, he has 4 coins left. Or, if he splits all of his coins into 11 equal piles for his shipmates, he has 4 coins left. Assuming every pile has at least 1 coin, what is the least possible number of coins Pirate Jack has?
Answers
The least possible number of coins Pirate Jack has, is 81 coins.
Step-by-step explanation:
Given,
When the coins are divided into 7 equal piles, 4 coins are left.
When the coins are divided into 11 equal piles, 4 coins are left.
We will take LCM of both 7 and 11.
7 = 7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, ....
11 = 11, 22, 33, 44, 55, 66, 77, 88, ...
The least common multiple of 7 and 11 is 77.
As 4 coins are left, therefore, we will add those coins.
Total possible coins = 77+4 = 81
The least possible number of coins Pirate Jack has, is 81 coins.
Keywords: LCM, addition
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(12 r) (r 6) m=2
PLEASE HELP AND SHOW YOUR WORK!!!!
Answers
Answer:
seems like you need to learn how to do your own work.
Step-by-step explanation:
Ask instructor for help or go back to the book
Which expression has a negative value?
A. -1×-2
B. 1×−2×−3×−4×−5
C. −1×2×−3×4×−5
D. 1×−2×3×−4×5
Please answer correctly! Oh, and fail to satisfy me with your answer will result in someone being reported.
Answers
The expression -1 × 2 × -3 × 4 × -5 has a negative value ⇒ C
Step-by-step explanation:
Let us revise the products of negative and positive
(+) × (+) = (+)(-) × (-) = (+)(-) × (+) = (-)(+) × (-) = (-)The product of three (-) is (-) ⇒ -2 × -3 × -1 = -6 (-2 × -3 = 6 × -1 = -6)The product of four (-) is (+) ⇒ -2 × -3 × -1 × -4 = 24 (-2 × -3 = 6 × -1 = -6 × -4 = 24)If there are even negative signs, then the product will be positiveIf there are odd negative signs, then the product will be negativeA. -1 × -2
∵ There are two negative signs
∵ 2 is an even number
∴ -1 × -2 has a positive value
B. 1 × -2 × -3 × -4 × -5
∵ There are four negative signs (-2 , -3 , -4 , -5)
∵ 4 is an even number
∴ 1 × -2 × -3 × -4 × -5 has a positive value
C. -1 × 2 × -3 × 4 × -5
∵ There are three negative signs (-1 , -3 , -5)
∵ 3 is an odd number
∴ -1 × 2 × -3 × 4 × -5 has a negative value
D. 1 × -2 × 3 × -4 × 5
∵ There are two negative signs (-2 , -4)
∵ 2 is an even number
∴ 1 × -2 × 3 × -4 × 5 has a positive value
The expression -1 × 2 × -3 × 4 × -5 has a negative value
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!!! need help!! whats the answer?
Answers
Ramesh says that based on the pattern 7^-5 =-16,807 which statement explains were her Ramesh is correct?
Answers
Ramesh is not correct because as the exponents decrease, the previous value is divided by 7 .
Explanation:
An exponent refers to the number of times a number is multiplied by itself. For example, 2 to the 3rd (written like this: 23) means: 2 x 2 x 2 = 8. 23 is not the same as 2 x 3 = 6. Remember that a number raised to the power of 1 is itself.
Exponents are superscript numerals that let you know how many times you should multiply a number by itself. Some real world applications include understanding scientific scales like the pH scale or the Richter scale, using scientific notation to write very large or very small numbers and taking measurements.
Answer:
D. Ramesh is not correct because as the exponents decrease, the previous value is divided by 7, so 7 Superscript negative 5 = 1 divided by 7 divided by 7 divided by 7 divided by 7 divided by 7 = StartFraction 1 Over 16,807 EndFractionStep-by-step explanation:
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