Answer:
C. x = 3, y = -6 is the answer.
Step-by-step explanation:
1. Isolate x for x = 2y = 15 -> x = 15 + 2y
2. Substitute x = 15 + 2y -> [2 (15 + 2y) + 4y = -18]
3. Simplify -> [30 + 8y = -18)
4. Isolate y for 30 + 8y = -18 -> y = -6
5. For x = 15 + 2y, substitute y = -6 -> x = 15 + 2(-6)
So, x = 3 and y = -6 are the solutions to this system of equations.
Hope this helps! :)
And also you should use Symbolab, it gives all the answers and steps
Forty-six percent of people believe that there is life on other planets in the universe. A scientist does not agree with this finding. He surveyed 120 randomly selected individuals and found 48 believed that there is life on other planets.
(a) At α = 0.10, is there sufficient evidence to conclude that the percentage differs from 46?
Answer:
α = 0.10
Step-by-step explanation :
the percentage is different form 46
Select all the equations that are equivalent
Answer: all equal n=6
1st one
2nd one
3rd one
5th one
4(2n+1)=52
4=52-8n
n=6
hope it helps
stay safe love u
btw can i get brainliest
The list shows the score of each game completed at a bowling alley during a one-hour period. 90, 96, 120, 124, 130, 135, 140, 145, 148, 290, 290.
How would the data graphed on a horizontal number line appear to be clustered or skewed? Explain your answer.
Would the mode of the data be an informative measure of center in this situation? Explain your answer.
would the median often of the data be less than or greater than the the mean? Explain your answer.
Based on the response to Part C, why is the median a less informative or more informative measure of center than less the mean?
Silvester ran around the field,
turning at each of the three backstops.
What was the average number of degrees
he turned at each of the three corners?
it is 76 ooooooooooooof
PLEASE HELP!!!!
Angle θ is in standard position. If (8, -15) is on the terminal ray of angle θ, find the values of the trigonometric functions.
sin(θ) =
cos(θ) =
tan(θ) =
csc(θ) =
sec(θ) =
cot(θ) =
Answers:
sin(θ) = -15/17 cos(θ) = 8/17 tan(θ) = -15/8 csc(θ) = -17/15 sec(θ) = 17/8 cot(θ) = -8/15=======================================================
Explanation:
Refer to the diagram below. The point (8,-15) is in quadrant 4, which is the southeast quadrant. A right triangle forms where the hypotenuse goes from the origin to the terminal point in question. After applying the pythagorean theorem, the hypotenuse is 17 units long.
Opposite the reference angle θ, greek letter theta, the side is -15. Usually negative lengths are not allowed and don't make any sense; however, I'm making this negative to ensure that sin(θ) ends up negative. This will help with other trig ratios as well.
So,
sin(angle) = opposite/hypotenuse
sin(θ) = -15/17
-----------------
The cosine ratio will involve the adjacent and hypotenuse
cos(angle) = adjacent/hypotenuse
cos(θ) = 8/17
------------------
Tangent is opposite over adjacent
tan(angle) = opposite/adjacent
tan(θ) = -15/8
------------------
The functions csc(θ), sec(θ), and cot(θ) are the functions cosecant, secant, and cotangent in that order.
They represent the reciprocal of sine, cosine, and tangent in that order as well.
Eg: sec(θ) is the reciprocal of cos(θ)
This means,
csc(θ) = -17/15 which is the flip of sin(θ) = -15/17sec(θ) = 17/8 which is the flip of cos(θ) = 8/17cot(θ) = -8/15 which is the flip of tan(θ) = -15/8As an alternative, you could also say
csc(θ) = hypotenuse/opposite = 17/(-15) = -17/15sec(θ) = hypotenuse/adjacent = 17/8cot(θ) = adjacent/opposite = -15/8------------------------
Here's a list of formulas that you can write down on a reference sheet
sin(θ) = y/h cos(θ) = x/h tan(θ) = y/x csc(θ) = h/y sec(θ) = h/x cot(θ) = x/ywhere h is the hypotenuse and h = sqrt(x^2+y^2). Notice that something like tan = y/x is the reciprocal of cot = x/y. The x and y refers to the coordinates of the terminal point given to you. Make sure to reduce all fractions as much as possible. In our case, none of the fractions can be reduced any further.
JUST LOOK AT PICTURE THANK YOUUU
Main / sem
25.1.2 Exam: Semester Exam
A circle is sliced into 16 pieces and rearranged into a shape that looks like a
parallelogram. The dashed line indicates the base of the shape. Which
statement is correct?
O A. The base of the parallelogram is approximately equal to the
circumference of the circle.
O B. The base of the parallelogram is approximately equal to half the
circumference of the circle.
O C. The base of the parallelogram is approximately equal to the
diameter of the circle.
O D. The base of the parallelogram is approximately equal to the radius
of the circle
PREVIOUS
Answer:B half of the circumference
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
what is the best estimate for 5 and 382?
a. 900
b. 500
c. 2,000
d. 3,000
Answer:
I think choose b. 500
Samantha is comparing scooter prices with two different DC scooter companies. With the UBER scooters, the equation c = 1.80m gives the relationship between m, the number of minutes per ride, and the total cost, in dollars. With the LYET scooters, the cost of 5 minutes is $3.75 and the cost of 10 minutes is $7.50. If Samantha rides for 12 minutes, how much money would she save by renting the less expensive scooter? Explain your reasoning.
Answer:
yes!
Step-by-step explanation:
What is an example of a regular polygon?
Answer:A few examples of regular polygons are a triangle, quadrilateral, pentagon, hexagon, heptagon, and a decagon.
Jason drove 8 4/5 miles to a subway station. He then 15 /6 miles by taxi to attend a meeting. How many total miles did he travel?
Answer:
Option A: (23 + 29/30) miles
Step-by-step explanation:
Here we just need to add two mixed numbers.
(8 + 4/5) miles and (15 + 1/6) miles.
To add these, we just separate between the whole part and the fraction part:
(8 + 4/5) miles + (15 + 1/6) miles
= (8 + 4/5 + 15 + 1/6) miles
= (8 + 15 + 4/5 + 1/6) miles
= (23 + 4/5 + 1/6) miles
Now we need to find a common multiple between 6 and 5.
So, only analyzing the fraction part of the sum, we can rewrite:
4/5 + 1/6
= 4/5*(6/6) + 1/6*(5/5)
(notice that we are multiplying both numbers by one, so we do not change the expression's value)
= (4*6)/(5*6) + (1*5)/(6*5)
= 24/30 + 5/30
So now both fractions have the same denominator.
Then, replacing that in the sum equation we get:
(23 + 4/5 + 1/6) miles = (23 + 24/30 + 5/30) miles
= (23 + 29/30) miles
Then the correct option is option A.
One number is three less than another number. Their product is 40. Find the numbers.
Answer:8 and 5
Step-by-step explanation:8 times 5 is 40 and 5 is 3 less than 8
Trey randomly selects one card a from a standard 52-card deck.
The probability that Treys cards will be a heart or a black-suited card is because the set of hearts and the set of black-suited
The probability that Trey's card will be a heart or a black-suited card is
cards are
sets
Answer:
3/4 AND MUTUALLY EXCLUSIVE
Step-by-step explanation:
PLATO
The probability that Trey's card will be a heart or a black-suited card is
3/4
What is probability?Probability is the likelihood that an event will occur and is calculated by dividing the number of favorable outcomes by the total number of possible outcomes.
Deck of cards contains,
spade=13, heart=13, diamonds=13, clubs= 13
In which clubs and spades are black and hearts and diamonds are red.
Total (Black suited card with a heart) =26+13= 39
P( heart or a black-suited card)=39/52
=3/4.
Hence, probability of heart or a black-suited card is 3/4
Learn more about probability here:
brainly.com/question/11234923
#SPJ2
Help pls I’ll give extra points
Answer:
Step-by-step explanation:
Work out the mean for the data set below: 5, 3, 3, 6, 2, 5, 2, 4, 7 Give your answer as a fraction in its simplest form.
Answer:
4 1/9
Step-by-step explanation:
Add all of them together. you get 37. Then divide them by how many numbers. You get 4.111 repeating. I then just turned that into a fraction and got 4 1/9
Two sets of three consecutive integers have a property that the product of the larger two is
one less than 7 times the smallest. Set up and solve an equation that can be sue to find both
sets of integers. What are those sets of integers?
Answer:
{1, 2, 3}, {3, 4, 5}
Step-by-step explanation:
Write expressions for three consecutive integers: n, n + 1, n + 2.
Set up an equation for the verbal description: the product (mulitplication) of the two larger integers (the last two) is one less than 7 times the smallest (the first one).
(n + 1)(n + 2) = 7n - 1
Multiply (FOIL) the left side.
n^2 + 3n + 2 = 7n - 1
Subtract 7n and subtract 1 to make the right side 0.
n^2 - 4n + 3 = 0
Factor.
(n - 1)(n - 3) = 0
Set the two factors equal to 0
n - 1 = 0, n - 3 = 0
Solve for n.
n = 1, n = 3
One set of integers begins with 1, so it's {1, 2, 3}.
The other set begins with 3, so it's {3, 4, 5}
5 fractions with denominator of 1 between 0 and 1/14
Answer:
Are there options to choose from?
Step-by-step explanation:
please answer ill give you brialiest
Answer: can you please list the choices that are in the drop down box
Step-by-step explanation:
Answer:
The shortcut would be 53 yards
Step-by-step explanation:
Because trigonometry
5. Lines p and q are parallel, and line w is a transversal. Which angle is not congruent to angle 1?
Answer:
∠2, ∠4, ∠6 and ∠8 are not congruent to ∠1.
Step-by-step explanation:
From the picture attached,
p and q are the parallel lines and w is a transversal.
∠1 ≅ ∠3 [Vertically opposite angles]
∠1 ≅ ∠5 [Corresponding angles]
∠1 ≅ ∠7 [Alternate exterior angles]
Therefore, ∠2, ∠4, ∠6 and ∠8 are not congruent to ∠1.
What is the answer?
Answer:
A
Step-by-step explanation:
2+3=5, 5+3=8, 8+3=11. 2x3=6, 5x3=15, 8x3=24, 11x3=33
Answer:
A
Step-by-step explanation:
Proportional is where everything will match
so we have 2x3=6 5x3=15 8x3=24 11x3=33
This works because it continues the same line of multiplication (x3).
But like B, you start with 4,4=16 which works, but now you have 5x4=21, which will not work because 5x4 will never equal 21
Your answer is A
Nigel, Gina, and Kamal bought dog supplies.
Each person spent between $15 and $20.
Nigel bought 4 items.
Gina bought 5 items.
Kamal bought 2 items.
The prices of the items are given below. Drag items to each box to show what each person could have bought.
PLEASE HELP I BEG YOU
Answer:
5 items: 1 dog bone, 3 water bowls, 1 collar
4 Items: 3 Water bowls, 1 Box Of Dog Food
2 items: 1 box of dog food, 1 collar
IVE BEEN ASKING FOR HOURS!!!!!! PLEASE HELP ME ANYONE!!!!! Juliet coaches softball and soccer. she coaches both sports for 15 hours each day. soccer practice is 1.5 more hours more than 3 times as long as the softball practice. write a system of equations to model the situation.
Answer:
x + y = 15
y = 3x + 1.5
x + (3x + 1.5) = 15
Step-by-step explanation:
Let :
Soft ball practice = x
Soccer practice = y
y = 3x + 1.5
Total practice time :
x + y = 15 - - - (1)
x + 3x + 1.5 = 15
4x + 1.5 = 15
what is
1/3 x (15+6)
Answer:
First, you do 15+6 (because of the parentheses)
You get 21
then you have to do 1/3 times 21 and you get 7
Answer:
7
Step-by-step explanation:
Using BODMAS which stands for:
(Bracket, of, Division, Multiplication, Addition and Subtraction)
We first treat the bracket
(15+6)=21
We then treat the division
(but it is already reduced to its lowest terms therefore no need, but if you like you can reduce it to a decimal though)
[tex]\frac{1}{3}[/tex]
Then we move onto the multiplication which is the last part
[tex]\frac{1}{3}[/tex] ×21= [tex]\frac{21}{3}[/tex] =7
Hi guys! PLEASE HELP! I'm back with another probability problem I've struggling on. Please DO NOT leave any links or you will be reported.
Please help explain what I'm doing wrong and what I'm suppose to do. This is confusing me.
Pizza parlor A advertises 35 different three-topping pizzas. How many individual toppings does Pizzeria A actually use? Pizzeria B advertises 55 different two-topping pizzas. How many toppings does pizza parlor B actually use? (Hint: In these problems, you are given the total number of combinations, and you must find the number of toppings that are used.)
Pizza parlor A uses _____ nothing different toppings. (Type a whole number.)
Thank to anyone who decides to help :)
Answer:
Possibly 105?
Step-by-step explanation:
35 becuase (35 different three-topping pizzas) so 35x3=105?
Given that P(B) = 0.4 and P(AB) = 0.25, what must the P(A and B) = ?
0.100
0.160
0.410
1.000
May some one please answer this for me, if u are right i will give u brainliest
Answer:
b. 14x+4y
Step-by-step explanation:
The perimeter is determined by two times the length plus two times the width.
We will use the formula P = 2L+2W:
P = 2L+2W
P = 2(5x-y)+2(2x+3y)
P = (10x-2y)+(4x+6y)
P = 14x+4y
6in
4IN
The rectangle above is being enlarged
by a scale factor on 3.5.
Show your work to find the new
dimensions.
The sum of a number and 20 is equal to 25 plus 5. What is the number? * 25 puntos a. 15 b. 20 c. 10
Answer:
I believe your answer is 10! :)
Find the m2.
O a. m Q = 30 degrees
O b.mxQ = 60 degrees
O c. m Q = 70 degrees
O d. m2Q = 75 degrees
9514 1404 393
Answer:
d. m∠Q = 75 degrees
Step-by-step explanation:
The sum of the angles in a triangle is 180°. This triangle is marked to show it is an isosceles triangle, so the two base angles have the same measure.
∠P +∠Q +∠R = 180°
x° +(2x +15)° +(2x +15)° = 180°
5x = 150 . . . . . . . . . . . . . . . . . . . divide by °, subtract 30
x = 30 . . . . . . . . . . . . . . . . divide by 5
m∠Q = (2x +15)° = (2(30) +15)°
m∠Q = 75°
Help plz:)))I’ll mark u Brainliest
Answer:
= 110 g AgCl
Step-by-step explanation:
NaCl + Ag(NO3) → AgCl + NaNO3
↓ ↑
mol → mol
NaCl AgCl
[tex]\frac{45 g NaCl }{} \frac{1 mol NaCl}{57.44 g NaCl} \frac{1 mol AgCl}{1 mol NaCl } \frac{143.87 g AgCl}{1 mol AgCl} == 110 g AgCl[/tex]
if x=5, then 3x+4x-15 equals what
Answer: 20
Step-by-step explanation:
Data: x=5 and 3x+4x-15
First step, Insert the 5 and multiply
3(5)+4(5)-15=15+20-15
Second step, add 15+20=35
Final step, subtract 35-15=20
The answer is 20
I hope this helps!