Answer:
B
Step-by-step explanation:
A radio station signal covers a circular area out from the signal tower. It gets weaker the farther away your are. The local station WDHS (at location (0,0)) sends it signal out with a coverage radius of 5 miles. 1) Will we hear it better at Zaxby's (2,-4), McDonalds (4, -4), or Dunkin' (-3,3). Show work to support your decision and explain your reasoning. 2) Are any of these location outside the range of the radio station? If so, which one(s). Defend your decision mathematically.
Answer:
1. We would hear better at Dunkin's since its distance from the radio station is the shortest.
2. McDonald's is out of range of the radio station since its distance is greater than the range of the radio station.
Step-by-step explanation:
1) Will we hear it better at Zaxby's (2,-4), McDonalds (4, -4), or Dunkin' (-3,3). Show work to support your decision and explain your reasoning.
We need to find the distance of each point from the tower.
The shorter the distance from the radio station the better the signal.
The distance between two points (x₁, y₁) and (x₂, y₂) is given by d = √[(x₂ - x₁)² + (y₂ - y₁)²].
With (x₁, y₁) = (0, 0) the location of local station WDHS
For Zaxby's distance located at (2, -4) = (x₂, y₂)
So, d₁ = √[(x₂ - x₁)² + (y₂ - y₁)²]
= √[(2 - 0)² + (-4 - 0)²]
= √[(2)² + (-4)²]
= √[4 + 16]
= √20
= √(5 × 4)
= √5 × √4
= 2√5
= 4.47 miles
For McDonald's distance located at (4, -4) = (x₂, y₂)
So, d₂ = √[(x₂ - x₁)² + (y₂ - y₁)²]
= √[(4 - 0)² + (-4 - 0)²]
= √[(4)² + (-4)²]
= √[16 + 16]
= √32
= √(16 × 2)
= √16 × √2
= 4√2
= 5.66 miles
For Dunkin's distance located at (-3, 3) = (x₂, y₂)
So, d₃ = √[(x₂ - x₁)² + (y₂ - y₁)²]
= √[(-3 - 0)² + (-3 - 0)²]
= √[(-3)² + (-3)²]
= √[9 + 9]
= √18
= √(9 × 2)
= √9 × √2
= 3√2
= 4.24 miles
Since Dunkin's distance, d₃ = 4.24 is the least distance from the radio station and is within range of 5 miles, we would hear better at Dunkin's.
2) Are any of these location outside the range of the radio station? If so, which one(s). Defend your decision mathematically.
The radio station is outside of range if its distance is greater than 5 miles. That is, d > 5 miles.
So, we calculate the distance of each point from the radio station.
With (x₁, y₁) = (0, 0) the location of local station WDHS
For Zaxby's distance located at (2, -4) = (x₂, y₂)
So, d₁ = √[(x₂ - x₁)² + (y₂ - y₁)²]
= √[(2 - 0)² + (-4 - 0)²]
= √[(2)² + (-4)²]
= √[4 + 16]
= √20
= √(5 × 4)
= √5 × √4
= 2√5
= 4.47 miles
For McDonald's distance located at (4, -4) = (x₂, y₂)
So, d₂ = √[(x₂ - x₁)² + (y₂ - y₁)²]
= √[(4 - 0)² + (-4 - 0)²]
= √[(4)² + (-4)²]
= √[16 + 16]
= √32
= √(16 × 2)
= √16 × √2
= 4√2
= 5.66 miles
For Dunkin's distance located at (-3, 3) = (x₂, y₂)
So, d₃ = √[(x₂ - x₁)² + (y₂ - y₁)²]
= √[(-3 - 0)² + (-3 - 0)²]
= √[(-3)² + (-3)²]
= √[9 + 9]
= √18
= √(9 × 2)
= √9 × √2
= 3√2
= 4.24 miles
So, for each of the distances calculated above, only McDonald's distance, d₂ = 5.66 miles > 5 miles.
So, McDonald's is out of range of the radio station.
PLZ PLZ PLZ I GIVE BRAINLIEST ANSWER PLZ
Answer:
[tex] \sqrt{ {( - 1 - 4)}^{2} + {(2 - ( - 3))}^{2} } = \sqrt{ {5}^{2} + {5}^{2} } = 5 \sqrt{2} [/tex]
Find the length of the third side if necessary round to the nearest tenth
Answer:
H²=a²+b²
H²=4²+7²
H= 8.06
Answer this please 7= - w/8
Answer:
[tex]w = - 56[/tex]Step-by-step explanation:
[tex]7 = \frac{ - w}{8} [/tex][tex] \frac{ -w }{8} = 7[/tex][tex] - 8 \times \frac{ - w}{8} = - 8 \times 7[/tex][tex] - 1 \times ( - w) = - 8 \times 7[/tex]
[tex]1 \times w = - 8 \times 7[/tex]
[tex]w = - 8 \times 7[/tex]
[tex]w = - 56[/tex]
Hope it is helpful....A baby elephant eats 5/6 ton of food each . How many tons of food do the two of them eat together each day
Answer:
1 4/6 tons.
Step-by-step explanation:
5/6+5/6
Add the numerator first to get 10.
Then convert the fraction from an improper fraction to a mixed number.
I need to know how many days buttttt
1 day = 1 2/3
2 days = 3 1/3
3 days = 5
4 days = 6 2/3
5 days = 8 1/3
6 days = 10
7 days = 11 2/3
Step-by-step explanation:
Marla made $42 babysitting
for 5 hour's. How much money
did she make each hour?
A $8,40
B. 18.10
C. $1.90
D. $11.90
Help please
Answer: she made $8.40
Step-by-step explanation: divide 42 by 5 to get your answer
Answer:
A - $8.40
Step-by-step explanation:
You would have to do 45÷5
5. Two vertices of a rectangle are (8,-5) and (8,7). If the area of the rectangle is 72 square units, name the possible location of the other two vertices. 6. A triangle with two vertices located at (5,-8) and (5, 4) has an area of 48 square units Determine one possible
Answer:
#5Given vertices:
(8, -5) and (8, 7)These have same x-coordinate, so when connected form a vertical segment.
The length of the segment is:
7 - (-5) = 12 unitsThe area of the rectangle is 72 square units, so the horizontal segment has the length of:
72/12 = 6 unitsPossible location of the remaining vertices (to the left from the given):
(8 - 6, -5) = (2, -5)and
(8 - 6, 7) = (2, 7)#6Similarly to previous exercise:
(5, -8) and (5, 4) given with the area of 48 square unitsThe distance between the given vertices:
4 - (-8) = 12 unitsThe other side length is:
48/12 = 4 unitsPossible location of the other vertices (to the right from the given):
(5 + 4, -8) = (9, -8)and
(5 + 4, 4) = (9, 4)PLEASE HELP GEOMETRY!!! WILL GIVE BRAIN PLEASE!!!
PLZ PLZ PLZ HELP ME PLSSSSS
Answer:
x = 70
Step-by-step explanation:
Answer:
Step-by-step explanation:
b/c we know that the inside angles of a triangle add to 180
180 = 38 + x + x + 2
180 = 40 + 2x
140 = 2x
70 = x
2 questions only, please help :)
Answer:
yesno, 2y-x = -16Step-by-step explanation:
standard form is:
Ax+By=C
for problem 2:
y= 1/2 x-8
y- 1/2 x - 8= 0
rearrange:
- 1/2x + y +8 = 0
2 (- 1/2x + y + 8) = 0
-x + 2y + 16= 0
-x + 2y = -16
leading coefficient can't be negative
so multiply everything by -1
x -2y = 16
Answer:
1 yes no
Step-by-step explanation:
1 this is in standard form as it is a linear form and the intercepts can be found
2 This is not in standard form as it is a linear equation and both the x and y intercepts cant be found so must be written in the form AX+BY=C
so
-x + 2y = -6
and leading coefficient cant be - so multiply by -1
so
x-2y=6
Juan has scores of 85, 83, and 93 on three math
tests. What is Juan's average test score on these
math tests?
Answer:87
Step-by-step explanation:added all numbers and divided by 3
Identify what type of polygon this is based on its number of sides. Is this a regular polygon why or why not?
Drag tiles to fill in the blanks to complete the expression that could be used to predict the number of winners of a game. Tiles may be used once or not at all. A)Total Number of Possible Outcomes B)Number of Winners C)Number of Unfavorable Outcomes D)Number of Games P(event) = Number of Favorable Outcomes _________________________ ????????????????????????????? = ????????????????????????????? _________________________ 11 Total Number of Contestants
The first blank will be filled by Option A: Total Number of Possible Outcomes. The second blank will be filled by Option B: Number of Winners
How to calculate the probability of an event?Suppose that there are finite elementary events in the sample space of the considered experiment, and all are equally likely.
Then, suppose we want to find the probability of an event E.
Then, its probability is given as
[tex]P(E) = \dfrac{\text{Number of favorable outcomes}}{\text{Number of possible outcomes}} = \dfrac{n(E)}{n(S)}[/tex]
where favorable cases are those elementary events who belong to E, and total cases are the size of the sample space.
For this case, we want the expression that could be used to predict the number of winners of a game.
Thus, event = event of winning the game, and its probability is evaluated as:
[tex]P(event) = \dfrac{\text{Number of favorable outcomes}}{\text{Number of possible outcomes}} \\\\P(\text{Winning the game})= \dfrac{\text{Number of winners}}{\text{Number of contestants}}[/tex]
Thus, the first blank will be filled by Option A: Total Number of Possible Outcomes. The second blank will be filled by Option B: Number of Winners
Learn more about probability here:
brainly.com/question/1210781
Solve each equation for y (get into slope-intercept/y=mx + b form): a) 10x + 5y = 20 b) 3x - 2y = 10 + 4x
Don't forget to explain how you got the answers.
Answer:
see below
Step-by-step explanation:
We want to solve each equation for y, so y must be alone on one side of the equation.
a) 10x + 5y = 20
Subtract 10x from both sides.
5y = 20 - 10x
Place the x term in front to follow y = mx + b form.
5y = -10x + 20
We want to isolate y completely, so divide both sides by 5. On the right side, be sure to divide each component by 5.
5y/5 = -10/5x + 20/5
y = -2x + 4
This equation is in slope-intercept form.
b) 3x - 2y = 10 + 4x
We can see that y is negative in this original equation. Let's add 2y to both sides to make y positive.
3x = 10 + 4x + 2y
Now we want to isolate y, so subtract 4x from both sides.
3x - 4x = 10 + 2y
Simplify.
-x = 10 + 2y
Isolate y further by subtracting 10 from both sides.
-x - 10 = 2y
Again, we want to isolate y completely, so divide both sides by 2. On the left side, be sure to divide each component by 2.
-x/2 - 10/2 = 2y/2
-1/2x - 5 = y
This looks backwards (although it is in slope-intercept form), so let's rearrange it just to make it more clear.
y = -1/2x - 5
This equation is in slope-intercept form.
Hope this helps!
Lisa buys 6 packets of potato chips for a birthday party. If one packet of chips costs $2.68, how much money does Lisa spend?
Answer:
16.08
Step-by-step explanation:
to find the answer multiply how many chips by the price to find the total,so
6x2.68=16.08
so she spent 16.08 on chips in total
Answer:
Lisa spends $16.08.
Step-by-step explanation:
You would do 6 times 2.68 and that would get you your answer. :)
(-25) × [6 + 4] is not same as
Answer:
hope help you stay happy
Answer:
(-250)
Step-by-step explanation:
(-25)×(6+4)
First we start with the brackets
(6+4)
which is 10
than we do the other operation
(-25×10)
= -250
When you multiply a negative number by a positive number then the product(answer) is always negative
Write an equation to represent the sentence. DO NOT SOLVE THE EQUATION. Just
convert English to Algebra.
5 more than 4 times a number equals 21
Answer:
5+4x=21
Step-by-step explanation:
Let's say the "number" is x.
"more than" indicates addition, and "times" indicates multiplication.
5+4x=21
Hey mia Please answer and How are yall If yall dont have something good dont answer and only one person answer please so mia can answer
Answer:
Hey, hope your good and you got a great friend here <3
Step-by-step explanation:
Which product is negative?
S
3
8
5
Answer:
D. (-3/8) (-5/7) (-1/4)
Step-by-step explanation:
Hints:
- * - * + = +
+ * - * - = +
+ * + * + = +
- * - * - = -
A. (-3/8)(-5/7)(1/4)
= (-3*-5*1) / (8*7*4)
= 15/224
B. (3/8)(-5/7)(-1/4)
= (3*-5*-1) / (8*7*4)
= 15/224
C. (3/8)(5/7)(1/4)
= (3*5*1) / (8*7*4)
= 15/224
D. (-3/8) (-5/7) (-1/4)
= (- 3*-5*-1) / (8*7*4)
= (-15)/(224)
= -15/224
The correct option is
D. (-3/8) (-5/7) (-1/4)
There are many ways to collect data about solar cells. The following information should help you judge whether solar energy power can be pollution-free. Which one does NOT?
Answer:
D
Step-by-step explanation:
observe that the ground outside one manufacturing plant turned white
Find the measure of the exterior <1 A 130 B 22 C 78 D 102
Answer:
C
Step-by-step explanation:
Answer:
here
Step-by-step explanation:
B. 39, 45. C. 162, 972. D. 33, 39. 2. Based on the pattern, what are the next two ... If two angles are complementary, then the sum of their measures is 90°. ... D. alternate exterior angles. 56. 7. 8. 11. Find m2. The diagram is not to scale. 180 ... perpendicular to one of two parallel lines, then it is also perpendicular to the other.
Please help i'll give brainliest
Given the expenses below, what is the yearly total of estimated expenses? Rent: $1,460 per month Transportation: $405 per month Clothing: $996 per year Food: $85 per week Savings: $120 per week Utilities: $390 per month Recreation/Entertainment: $90 per week
$39,877
$40,320
$41,580
$42,990
Answer:
3546
Step-by-step explanation:
1460+405+996+85+120+390+90= 3546
Find the volume of the prism. ____ cu. ft.
HELPP IM TAKING A TEST AND I WILL GIVE BRAINLIEST AND EXTRA POINTS
12 (tell me if im wrong sorry if i am)
Step-by-step explanation:
Each football player is recommended to drink a minimum of 540 milliliters of water for every 1 hour of play. Aaron expects to play football for 3 hours. His water bottle holds 2 liters. Will he have enough water to meet the recommendation? If so, how much water will he have left? If not, how much more water does he need to meet the requirement?
Answer:
Aaron will have enough water for 3 hours. he should have 380 milliliters left.
This relationship leads to the conclusion that there is no Pythagorean triple of this form that contains the integer 2. Why?
Answer:
suppose 2^2 + b^2 = c^2 with 2 < b < c (it should be clear that this assumption is fine, 12 + 22 = 5 and sqrt(5) is not an integer; 22 + 22 = 8 and sqrt(8) is not an integer). Then c^2 - 4 = b^2 so (c+2)(c-2) = b^2. As b is prime, this means c-2=b or c-2=1 (since c+2 > 1). So either c=b+2 or c=3. The c=3 case can't happen since that would make b^2 = 5 so we are left with c=b+2. Then we have 4 + b^2 = (b+2)2 = b2 + 4b + 4 meaning that b=0. So there are no triples involving 2.
Step-by-step explanation:
A Pythagorean triple of this form cannot contain integer 2 if we add extra 2x²y² because it will increase the value of the coefficient of xy to 4.
The given function:
[tex](x^2-y^2) + (2xy)^2 = (x^2 + y^2)^2[/tex]
This function is expanded as follows;
[tex](x^2-y^2)^2 + (2xy)^2 = (x^2 + y^2)^2\\\\x^4 + y^4 -2x^2y^2 + 4x^2y^2 = x^4 +y^4 + 2x^2y^2\\\\add \ \ (+2x^2y^2) \ to \ both \ sides \\\\x^4 +y^4 +4x^2y^2 = x^4 +y^4 +4x^2y^2[/tex]
In this expanded form of the given function, it is clear that non of the coefficients of x and y contains integer 2 and the supposed coefficient value of xy increase to 4 because of the extra 2x²y² added to the function.
Thus, we can conclude that a Pythagorean triple of this form cannot contain integer 2 if we add extra 2x²y² because it will increase the value of the coefficient of xy to 4.
Learn more here: https://brainly.com/question/11279692
hayley uses 30 cups of flour to make 120 cinnamon rolls. how many more cups of flour will she need to make 160 cinnamon rolls? ANSWER FAST PLEASE 100 POINTS
Answer:
40 cups of flour
Step-by-step explanation:
HELPPP PLZZZZ ASAP IS PLEASEEE DONT SEND A FILE AT ALL
Answer:
(-5, 7)
Step-by-step explanation:
Translate A left 6, and up 4
hii can i pls have help, i will give brainliest:D
Answer:
4
Step-by-step explanation:
half gallon is 64 oz. 256 ÷ 64 is 4
Answer
4
Step-by-step explanation:
1 gallon = 128 fluid ounces
1/2 gallon = 64 fluid ounces
Use gallons to convert 256 fl oz then multiply result by 2
256 / 128 = 2
2 x 2 = 4
4 half gallon containers
If my answer is incorrect, pls correct me!
If you like my answer and explanation, mark me as brainliest!
-Chetan K
Ava drove 224 miles in 4 hours, while Oscar drove 290 miles in 5 hours. What is her rate?
Answer:
Ava drove 56 miles per hour (mph) Oscar drove 58 mph, Oscar drove 2 mph faster than Ava.
Step-by-step explanation:
Find the value of x.
X
88°
86