Answers
Answer:
D. [tex]-\frac{\sqrt{2} }{2}[/tex]
Step-by-step explanation:
So, on a regular coordinate plane, coordinates are written (x,y)
well, in trig, coordinates are written (cosθ, sinθ).
if sinθ=[tex]\frac{\sqrt{2} }{2}[/tex] in the second quadrant, then look for the "y-value" that says
if you don't have a unit circle to look at, then it helps to know that the fraction [tex]\frac{\sqrt{2} }{2}[/tex] is ONLY found with ITSELF OR THE NEGATIVE OF ITSELF. it is never paired with another number.
this means that this number will only be seen in the coordinates
[tex](\frac{\sqrt{2} }{2} ,\frac{\sqrt{2} }{2})\\(-\frac{\sqrt{2} }{2},\frac{\sqrt{2} }{2})\\(-\frac{\sqrt{2} }{2},-\frac{\sqrt{2} }{2})\\(\frac{\sqrt{2} }{2},-\frac{\sqrt{2} }{2})[/tex]
use this knowledge along with knowing the signs in each quadrant:
Q1: (+,+)
Q2: (–,+)
Q3: (–,–)
Q4: (+,–)
Related Questions
Can someone explain this to me pls
Answers
Answer:
sory i cant explain but tell anser c
Step-by-step explanation:
Find 85% of the volume of a cube of side 12cm.
Answers
Answer:
10.2
Step-by-step explanation:
50% of 12= 6
10%= 1.2
30%= 3.6
5%= 0.6
50%+30%+5%= 6+3.6+0.6=10.2
Twice a number is 26?
Answers
Answer:
13x2 is 26
Step-by-step explanation:
Answer: The answer is 13.
Step-by-step explanation: This is because if you set up the equation
2x = 26 then you divide by 2 on each side, this would leave you with x = 13 which is the answer.
A rectangle has an area of 513.5m2. One of the sides is 7.9m in length. Work out the perimeter of the rectangle.
I will give top answer to first person who can answer and explain.
Answers
Answer:
P=145.8m
Step-by-step explanation:
Answer: The perimeter is 145.8 square meters
Step-by-step explanation:
Area=513.5 square meters
513.5=l (length) times w (width)
513.5= 7.9 times w
513.5= 7.9w
(DIVIDE 513.5 AND 7.9 BY 7.9)
65= w
Perimeter= 2l + 2w
Perimeter=2(7.9) + 2(65)
Perimeter=15.8 + 130
Perimeter=145.8 square meters
Si un triángulo tiene de lados 4 y 5 metros y el ángulo entre ellos es de 30°, ¿Cuál es el área de la figura?
Answers
25 is the answer id ont know how to explain it
PLS HELP FOR BRAINLIEST JUST PUT THE LETTER
Answers
Answer:
10.) A
11.) D
12.) B
13.) C
Step-by-step explanation:
What is the equation of a circle with radius 2 and center (3, 1)
Answers
Answer:
[tex](x - 3) ^2 + (y - 1)^2 = 4[/tex]
Find each unit rate. Round to the nearest hundredth if necessary
Answers
Answer:
the answer: 30 people per class
If a delivery truck drives 150 miles in 6 hours and maintains that rate of speed,
what is the unit rate for miles per hour?
Answers
Answer: 25 miles per hour
Step-by-step explanation:
Speed=Distance/Time
The distance is 150, and the time is 6. So, all we need to do is divide 150 by 6, and we get 25 miles per hour. Hope this helped!
Answer:
Step-by-step explanation:
r = d/t
d = 150 miles
t = 6 hours
r = 150 / 6
r = 25 miles / hour
I WILL GIVE YOU BRAINLIEST
Exponent: The number used to indicate how many times the base is a ___________________.
Answers
Answer:
An expression that represents repeated multiplication of the same factor is called a power. The number 5 is called the base, and the number 2 is called the exponent. The exponent corresponds to the number of times the base is used as a factor.
(DO NUMBER 7 ONLY)
7. Tropical Storm Ava brought heavy rain to
Galveston, TX. The table shows the linear
relationship between the total inches of rainfall
and time in hours. Calculate the rate of change
of rainfall per hour.
12
6
18
24
Hours
Rain (inches)
13.5
a
18
4.5
Answers
Proof: 6/4.5=1/x
6x/6=4.5/6
x=0.75
A basketball team scored a total of 1470 points over the course of its 21-game season. 470 of the points were from 1-point baskets. The remaining points were either 2-point or3-point baskets.
There were 440 2-point or 3-point
baskets scored. How many of those 440 baskets were 3-point baskets?
Answers
Since there were 1470 points scored total, and 470 of them were from 1 point baskets, that means 1470-470 = 1000 points were scored by 2 and 3 point baskets. Assuming x = the number of 2 point baskets scored and y = the number of 3 point baskets scored, that gives us an equation of 2x + 3y = 1000.
We also know that there were a total of 440 2 or 3 point baskets scored. Using x and y as defined before, we get an equation of x + y = 440.
To solve this, we can use substitution. Let's solve for x in terms of y for the second equation.
So x + y = 440. If we subtract y from both sides, we get x = 440 - y. Now we substitute 440 - y for x in the first equation.
2*(440-y) + 3y = 1000. Now we simply solve the equation.
880 - 2y + 3y = 1000.
880 + y = 1000.
y = 120.
So 120 of the baskets scored were 3 point baskets.
If we want to solve for x, we can substitute in the known value of y to the first equation
x + 120 = 440.
x = 320.
So 320 of the baskets scored were 2 point baskets.
State the equation of the line described.
A line passes through the point (-2,8) and is perpendicular to the line y = -3x + 3.
thank you guys!
Answers
Answer:
y = mx + b
Since it is perpendicular to the given line, its slope is the negative reciprocal of the slope of the given line.
Slope of given line:
m0 = -a/b = -(-3) / (1) = 3
Slope of perpendicular line:
m = -1/3
y = (-1/3)x + b
Use the given point to find b.
2 = (-1/3)(3) + b
2 = -1 + b
b = 3
y = (-1/3)x + 3
Step-by-step explanation:
Answer:
Step-by-step explanation:
Perpendicular lines have their slope negative reciprocal
y= -3x +3 has the slope -3
y = (1/3)x +b is the line that is ⊥ so it has the slope (1/3)
The line passes trough the point (x=-2, y=8) so substitute the x and y to find b
8 = (1/3)(-2) +b, multiply (1/3)(-2) = -2/3 and add 2/3 on both sides
8+(2/3) = b, find the common denominator and add the fractions
[(3*8)+2 ]/3 =b
(26/3) = b
The equation of the line described is y= (1/3)x +(26/3)
what is the aswer ??????
Answers
Answer:
A is correct don't you know
Please solve the math problem for me... I will mark you brainliest
Answers
18x+6=78
2x+4=12
Dani's Delicious Donuts recipe calls for 434 cup of flour per batch of cookies. If you
want to make 1.5 batches, how many cups of flour do you need?
Answers
There are 6 triangles and 5 squares.
What is the ratio of squares to
triangles?
Answers
Answer:
5:6
Step-by-step explanation:
Ratio means proportions.There are many rules of it
[tex]\\ \sf\longmapsto a:b::c:d[/tex]
[tex]\\ \sf\longmapsto \dfrac{a}{b}=\dfrac{c}{d}[/tex]
[tex]\\ \sf\longmapsto ad=bc[/tex]
plss help. brainliest for right answer
Answers
[tex]5667 \div 59 \\ \\ calculate \: \: the \: \: (approximate \: \: value) \\ \\ = 96.05085 \\ \\ \\ in \: \: alternte \: \: form \\ \\ = \frac{5667}{59} ,96 \frac{3}{59} \\ \\ \\ hope \: \: it \: \: helps[/tex]
which expression is equivalent to -10x-10+2x+9?
Answers
Please help me to solve this question as soon as possible
Answers
Answer:
set of M is {r,s,t}...........
Share £880 into the ratio of 3:1
Answers
Answer:
660:220
Step-by-step explanation:
Antonia bought a set of dishes, a towel, and a candle at a housewares store. The set of dishes cost $35.02, the towel cost $21.43, and the candle cost $9.59 before any coupons or discounts.
She used a $0.50-off coupon on the candle, a $2.75-off coupon on the towel, and the set of dishes was on sale for 10% off the regular price. Which of the following best describes the amounts that Antonia saved?
Answers
Answer:
Antonia saved $5.39
Step-by-step explanation:
Candle:
$9.59 - $0.50 (coupon) = $9.09
Towel:
$21.43 - $2.75 (coupon) = $18.68
Dishes:
$21.43 x 10% = 2.143
$21.43 - $2.143 = $19.287, rounded to the nearest cent and it’s $19.29.
Calculate the amount of money saved by adding 0.50 + 2.75 + 2.143, which is 5.393. Round to the nearest cent and it will be $5.39.
i'll give you the brainliest!! it's not hard
Answers
Explanation:
When plotting points you start from the x-axis first, then the y-axis second.
From the x-axis we can see that the point is on -1. And from the y-axis we can see that the point is on 4. Therefore the point is (-1,4)
Customers of a phone company can choose between two service plans for long distance calls. The first plan has a $28 monthly fee and charges an additional
50.08 for each minute of calls. The second plan has a $19 monthly fee and charges an additional $0.13 for each minute of calls. For how many minutes of calls
w the costs of the two plans be equal?
Answers
Answer:
180 minutesStep-by-step explanation:
Let x be the number of minutes of calls.
The first plan has a $28 monthly fee and charges an additional $0.08 for each minute of calls:
p(f) = 0.08x + 28The second plan has a $19 monthly fee and charges an additional $0.13 for each minute of calls:
p(s) = 0.13x + 19When p(f) = p(s) we get the following equation for x:
0.08x + 28 = 0.13x + 190.13x - 0.08x = 28 - 190.05x = 9x = 9/0.05x = 180what property do you use first in an algibra expretion
Answers
Answer:
BIDMAS
Step-by-step explanation:
In order to solve equations correctly, we use BIDMAS ( Brackets, Indices, Division, Multiplication, Addition and Subtraction).
For example, if we have 5+2x7, we would multiply 2 by 7 first, then add 5 to the value.
Write 50 as a product of three primes
Answers
Answer: 2*5*5
Step-by-step explanation:
2*5=1-*5=50
2 and 5 are prime numbers.
Question 4
2.5 pts
A pitcher on a baseball team is practicing his fast ball and trying to ensure he hits the strike zone.
He consistently releases the ball at 5.5 feet high while he is pitching. The pitcher must aim for the
ball to hit the ground approximately 50.4 feet from the pitcher's mound in order to stay in the strike
zone. At what angle of depression, to the nearest tenth of a degree, must he release the ball?
Answers
Answer:
Step-by-step explanation:
I love you
what is 2+x/5+x=7/8?
Answers
Answer:
x = - [tex]\frac{15}{16}[/tex]
Step-by-step explanation:
2 + [tex]\frac{x}{5}[/tex] + x = [tex]\frac{7}{8}[/tex]
Multiply through by 40 ( the LCM of 5 and 8 ) to clear the fractions
80 + 8x + 40x = 35
48x + 80 = 35 ( subtract 80 from both sides )
48x = - 45 ( divide both sides by 48 )
x = - [tex]\frac{45}{48}[/tex] = - [tex]\frac{15}{16}[/tex]
The average cost of a loaf of bread in 1950 was approximately 12 cents, and by 1990 the cost was about 70 cents. Which linear equation models the increase of the price of a loaf of bread? (Let x represent the number of years since 1900.)
Answers
1950:12
1990:70
70-12:58
58/40:1.45
1.45x40 :58
cada año le sumaban 1.45 a la barrita de cereal
saben que no me hagan caso ni yo se que acabo de hacer xd
Thus, the linear equation models the increase in the price of a loaf of bread will be 50x+12=70.
What is a linear equation?It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.
It is given that, the average cost of a loaf of bread in 1950 was approximately 12 cents, and by 1990 the cost was about 70 cents.
(Let x represent the number of years since 1900.)
The linear equation models the increase in the price of a loaf of bread will be.
y = bx + +c
70 = 50x + 12
The linear equation models the increase in the price of a loaf of bread will be 50x+12=70.
Learn more about the linear equation here:
brainly.com/question/11897796
#SPJ2
Classify each number below as a rational number or an irrational number.
Answers
Answer:
Step-by-step explanation:
[tex]\sqrt{29} - Irrational[/tex]
[tex]\frac{10}{3} - Rational[/tex]
[tex]-2\pi - Irrational[/tex]
[tex]-52.(92) - Rational[/tex]
[tex]-\sqrt{81} - Rational[/tex]