Answer:
They are disjoint.
Solve this System of Equations Algebraically
2x + 5y = -13
3x - 4y = -8
Answer Options :
( 4,1 )
( -4,1)
(4,-1)
(-4,-1)
Answer:
{x,y}={-4,-1}
Step-by-step explanation:
Solve by Substitution :
// Solve equation [2] for the variable x
[2] 3x = 4y - 8
[2] x = 4y/3 - 8/3
// Plug this in for variable x in equation [1]
[1] 2•(4y/3-8/3) + 5y = -13
[1] 23y/3 = -23/3
[1] 23y = -23
// Solve equation [1] for the variable y
[1] 23y = - 23
[1] y = - 1
// By now we know this much :
x = 4y/3-8/3
y = -1
// Use the y value to solve for x
x = (4/3)(-1)-8/3 = -4
Solution :
{x,y} = {-4,-1}
The ratio of cats and dogs are is 5 to 2 if there are 45 dogs in the neighborhood how many cats are there?
Answer:
18 cats.
Step-by-step explanation:
5 divided by 2 is 2.5. 45 multiplied by 2.5 is 18. This is the right answer, I double checked it.
how would i do this? :')
Step-by-step explanation:
sin 2b = -.5
2b =-30°
b = -15°
cot ^2(3π/4 +15)
=cot^2(3π/4+ π/12)
=cot ^2(10π/12)
=cot^2(150°)
=2.99
Please help, thank you!
Find the exact value:
cos Ф=3/5 where 270≤Ф<360
find cos2Ф
Answer:
[tex]cos2\theta = -frac7{25}[/tex]
Step-by-step explanation:
By using the double angle formula for cosine [tex]cos 2\theta = 2cos^2\theta -1[/tex], replacing the value we have we get
[tex]cos 2\theta = 2 (\frac35)^2 -1 = 2\frac9{25} -1 = \frac{18}{25}-\frac{25}{25} = -\frac{7}{25}[/tex]
Answer:
-7/25
Step-by-step explanation:
Disclaimer: I'm using variable x instead of theta.
Step 1: Simplify cos 2x.
[tex] \cos(2x) = \cos {}^{2} (x) - { \sin {}^{2} (x) }^{2} [/tex]
[tex] \cos(2x) = \cos {}^{2} (x) - (1 - \cos {}^{2} (x) ) [/tex]
[tex]2 \cos {}^{2} (x) - 1[/tex]
We know that cos x= 3/5 so that means
[tex] 2(\frac{3}{5} ){}^{2} - 1 = 2( \frac{9}{25} ) - 1 = \frac{18}{25} - 1 = \frac{ - 7}{25} [/tex]
So the exact value of cos 2x=
[tex] \frac{ - 7}{25} [/tex]
There is another way to find this but this is easier.
If X represents height and Y represents wingspan the slope represents the relationship between the wingspan and arm span what is the y-intercept represent?
Answer:
y-intercept mean the line going through
Step-by-step explanation:
it means the line going threw
Which statement about the location of K on the number line is true? Statement 1: The location of the point K can be described as -(-3). Statement 2: The location of point K can be described as the opposite of -3.
A: Only statement 1 is true
B: Only statement 2 is true
C: Neither statement 1 nor 2 are true
D: Both statement 1 and statement 2 are true
Answer:
I think I'm correct I don't know but I think the answer is B
Barry and Kerrie are discussing their pets
during a poker game. Barry tells Kerrie that
he has at least one dog at home. When Kerrie asks what breed, he answers
cryptically: "If I have a Labrador but not a
Staffie, I also have a Collie. I either have
both a Collie and a Staffie or neither. If I
have a Collie, then I also have a Labrador. "
What breed or breeds does Barry have at
home?
Based on the statements provided, Barry will a have a Labrador, a Collie and a Staffie at home if he has at least one dog breed.
What is logical reasoning ?Logical reasoning in mathematics is the process of using rational and critical thinking abilities to arrive at a conclusion about a problem.
Since Barry have at least one dog breed, the possible breeds of dogs that Barry have can be determined as follows:
Statement 1: If I have a Labrador but not a Staffie, I also have a Collie
Statement 2: I either have both a Collie and a Staffie or neither.
Statement 3: If I have a Collie, then I also have a Labrador.
From Statement 1, If Barry will have a Labrador and Collie if he doesn't have a Staffie. From Statement 2, Barry will have both a Collie and a Staffie or he wont have either.From Statement 3, Barry must have a Labrador if I he has a Collie.Therefore, Barry will have a Labrador, a Collie and a Staffie at home if he has at least one dog breed.
Learn more about logical reasoning at: https://brainly.com/question/25175983
The set of three lengths that will form a right triangle are
О 21, 31, 33
O 16,30,34
0 17,22,38
O 13, 20, 25
Answer:
O 16,30,34
Step-by-step explanation:
To confirm, use Pythagorean theorem to check.
(16)² + (30)² = (34)²
256 + 900 = 1156
=> It is correct
=> Therefore, this set of three lengths will form a right triangle
What is the value of x
I will give brainliest
Answer:
52
Step-by-step explanation:
answer = fifty two
x = 52
Answer:
X+90+90+128=360(total sum of quadrilateral)
X+180+128=360
X+308=360
X=360-308
X=52
find the missing lengths. leave your answers as radicals in simplest form
Check the picture below.
Edwin is shopping with his mom. He sees that oranges are on sale. A bag of 15 oranges costs $3. 75. Calculate the unit rate of each orange.
HELP FAST
Answer:
$0.25
Step-by-step explanation:
To find the unit rate of each orange, divide the total cost of the bag by the number of oranges in the bag:
⇒ 3.75 ÷ 15 = 0.25
Therefore, the unit rate of each orange is $0.25
find the area and perimeter of this figure
Answer:
Step-by-step explanation: it is 37 and per =45
i do not know this answer
i need the answers for h and e
Answer:
E'=[0,-8]
H'=[0,-3]
Step-by-step explanation:
180 are given a line that has a slope of 4 and passes through the point ở 2). Which statements about the equation
of the line are true? Check all that apply.
The y-intercept is -1.
The slope-intercept equation is y - 4x-1
The point slope equation is -
43-
The Point ( ) corresponds to (x, y) in the point-stope form of the equation.
Answer:
we can do it again and again and again and again and again and again and again and again and again on Monday morning baby I'm a fan for the rest are the only way we do to help me to get to see this
given the following zeros, find the polynomial function x=0, x=1, x=6
(
x
)
=
x
3
+
2
x
2
−
3
x
Explanation:
given zeros
x
=
−
3
,
x
=
0
,
x
=
1
then factors are
(
x
+
3
)
,
(
x
−
0
)
,
(
x
−
1
)
⇒
f
(
x
)
=
x
(
x
+
3
)
(
x
−
1
)
⇒
f
(
x
)
=
x
(
x
2
+
2
x
−
3
)
⇒
f
(
x
)
=
x
3
+
2
x
2
−
3
x
is a possible function
graph{x^3+2x^2-3x [-10, 10, -5, 5]}
HELLO CAN SOMEONE PLEASE ANSWER THIS QUESTION FOR ME I WILL MARK YOU THE BRAINLIEST AND I WILL GIVE YOU 5 STARS
Answer:
y=x-1
Step-by-step explanation:
Do the math. Just plug in x and y trust me it’s easy
Answer: y= x-1
Step-by-step explanation: y is always x minus 1 because -4 is one less than -3, 1 is one less than 2, and 4 is one less than 5.
Which of these expressions are equivalent to 7 1/2
Answer:
it's 7.5
Step-by-step explanation:
1/2 as a decimal is 0.5
Graph y=-6(3)^x
please do the table and the graph
20 POINTS!
Answer:
Explanation to the answer below... (Answers in the Explanation)
Step-by-step explanation:
We Know that our rule is y = [tex]y = -6(3)^{x}[/tex] , which means we can use this rule to find y from x. Since we don't know what X, is, we have to assume numbers like 1, to 7. And there is no space to write on the graph, I'll put a virtual copy of a graph.
1st Point,
[tex]y = -6(3)^{x}\\y = -6(3)^{1}\\y = -6(3)\\y = -18\\x = 1, y = -18[/tex]
2nd, point
[tex]y = -6(3)^x\\ y = -6(3)^2\\y = -6(9)\\y = -54\\x = 2, y = -54[/tex]
3rd Point
[tex]y = -6(3)^x\\y = -6(3)^3\\y = -6(27)\\y = -162\\x = 3, y = -162[/tex]
4th Point
[tex]y = -6(3)^4\\y = -6(81)\\y = -486\\x = 4, y = -486\\[/tex]
5th Point
[tex]y = -6(3)^5\\y = -6(243)\\y = -1458\\\x = 5, y = -1458[/tex]
6th Point
[tex]y = -6(3)^x\\y = -6(3)^6\\y = -6(729)\\y = -4,374\\x = 6, y = -4,374\\[/tex]
7th Point (Last Point)
[tex]y = -6(3)^x\\y = -6(3)^7\\y = -6(2,187)\\y. = -13,122\\x = 7, y = -13,122[/tex]
Let's now plot them on the Graph, the values are so big, the graph might look a little odd.
Always remember that we can continue the points infinitely, and there is no stop, The Graph is attached below...
The circumference of a hula hoop is 86\pi \text{ cm}86π cm86, pi, start text, space, c, m, end text.
What is the radius of the hula hoop?
Answer:
43 cm!
Step-by-step explanation:
First, C = 86π
So, 86 × 3.14 (which is π) = 270.04
270 ÷ 3.14 = 86
86 ÷ 2 = 43
i hope this helps :)
Please help! 20 points thanks :)
Answer:
Option A
Step-by-step explanation:
We use the slope formula:
[tex]\frac{y_{2}-{y_{1}} }{x_{2} -x_{1} }[/tex]
We substitute the values given and see which option corresponds with our equation:
[tex]\frac{-4-(-6)}{-2-3}[/tex]
Option A must be correct
Select the equation of the line that passes through the point (-2,3) and is perpendicular to the line on the graph.
O y = -2
O y = 0
O y = 3
O y = 3x
PLS HELP ASAP THANKS ILL GIVE BRAINLKEST PLS THANK YOU
Answer:
The answer is A)
Step-by-step explanation:
If we take it from the bottom left corner which it wants us to. We get the point (4,-6) if you move it 8 left and 7 up you get the new point (-4,1) Which ends up putting figure 1 inside of figure 2.
Hope this helped.
A brainliest is always appreciated
Given the following rectangle and circle, at what approximate value of x are the two areas equal? x ≈ 5.8 x ≈ 3.4 The curves do not intersect, so there is no solution. x ≈ 8.7
The approximate value of x will be approximately equal to 3.4
Area of triangle and circleThe formula for calculating area of rectangle is expressed as:
A = lw
l is the lengthw is the widthAr = (3x-1)(x+2)
Ar = 3x^2+6x-x-2
Ar = 3x^2 + 5x - 2
For the circle
Ac = πr²
Ac = 3.14(x-3)²
Ac = 3.14(x²-6x+9)
Ac = 3.14x² - 18.84x + 28.26
If the area are equal;
3x² + 5x - 2 = 3.14x² - 18.84x + 28.26
3.14x² - 3x² - 5x - 18.84x + 30.26 = 0
0.14x²-23.84x+30.26 = 0
On factorizing the equation, the approximate value of x will be approximately equal to 3.4
Learn more on area of rectangle here; https://brainly.com/question/25292087
Tori spends equal amounts of time on homework from each of her subjects. She spends 1 hour altogether on her homework each night. If Tori spends 1/4 an hour on Chemistry, how many subjects does she study?
Answer:
4
Step-by-step explanation:
Quarter hour on chemistry
Quarter hour on class 2
Quarter hour on class 3
Quarter hour on class 4
Total time....One hour
i need help please thanks
Answer:
pick all 3 of the bottom row
Find the slope of the line passing through the points (-4, -4) and (2, 5) .
Please help! I cannot figure this out! Any help is appreciated, and please explain as well!
Team A scored three times as many points as Team B. Which team scored most points? If Team A scored n point, how many points did team B score?
Answer:
They scored 66 points
Step-by-step explanation:
Sally scored 45% out of the 100%
And there are 120 points in all.
To find the rest of the teams points you have to subtract Sally's points:
100% - 45% = 55
So to find this out you solve for x (points):
55/100 = x/120
100x = 6,600
100x = 6,600
100 100
x = 66
Step-by-step explanation:
Which graph best represents the solution to this system of inequalities?
Answer:
D
Step-by-step explanation:
D is the only graph where the shaded region is on 6 and less.
(show ur work) what is 13 1/2 ÷ 8 2/4 = ?
which of the following has a unit rate of 2.5 meters per second
a: 4 meters in 10 seconds
b: 10 meters in 4 seconds
c: 7.5 meters in 3 seconds
d: 5 meters in 2 seconds
Answer:
All of them except A
B: 10 meters in 4 seconds
C: 7.5 meters in 3 seconds
D: 5 meters in 2 seconds
Step-by-step explanation:
divided the number meters by the number seconds to get meters per second
