Answers
Answer:
- 2.5Step-by-step explanation:
sin²45° - tan²60° + cos²90° = (√2/2)² - (√3)² + 0² = 1/2 - 3 + 0 = 0.5 - 3 = - 2.5[tex]\\ \rm{:}\rightarrowtail sin^245°-tan^260°+cos^290°[/tex]
sin45=1/√2tan60=√3cos90=1[tex]\\ \rm{:}\rightarrowtail (\dfrac{1}{\sqrt{2}})^2-(\sqrt{3})^2+(0)^2[/tex]
[tex]\\ \rm{:}\rightarrowtail \dfrac{1}{2}-3+0[/tex]
[tex]\\ \rm{:}\rightarrowtail 1/2-3[/tex]
[tex]\\ \rm{:}\rightarrowtail -5/2[/tex]
Related Questions
Reflect about the line x=5
Answers
Step-by-step explanation:
sori po kailangan ko po ng points sori po talaga
The sum of 2 numbers is 15 and their qoutient is 2
Answers
x + y = 15------(1)
x/y = 2------(2)
y = 15 - x
put this value in eq 2
x/(15-x) = 2
x = 2 (15 - x)
x = 30 - 2x
2x + x = 30
3x = 30
x = 10
y= 15 - x
y = 15 - 10
y = 5
Solution:
Given:
x + y = 15x/y = 2Let’s simplify the second equation to find out the value of x.
x/y = 2 x = 2yNow, let’s substitute the value of x into the first equation.
x + y = 152y + y = 153y = 15y = 5Now, let’s substitute the value of y into the simplified second equation.
x = 2yx = 2(5)x = 10Hence, the value of x and y are 5 and 10 respectively.
-(6e-11) (e - f) math Algebraic expressions
Answers
Answer:
-6e^2 - 6ef + 11e + 11f
Step-by-step explanation:
FOIL
(-6e+11)(e-f)
-6e x e = -6e^2
-6e x f = -6ef
11 x e = 11e
11 x f = 11f
Rewrite and you get your answer
I need help. This problem is difficult. Im not sure what to do.
Answers
Answer:
D and E are correct
Step-by-step explanation:
Since the temperature went over 75 degrees, it was 74 degrees twice
There is no change in that 4 hour period where the graph is flat
All of the others are not true
Answer:
20
3. Addie visited the elephant exhibit at the zoo. If there were 7 elephants in the
exhibit, how many elephant legs did Addie see?
Show work:
Strategy:
Answers
Addie saw 28 elephant legs
What is the value of the expression 52 + 22?
Numerical Answers Expected!
Answer for Blank 1:
Answers
Answer:
74
Step-by-step explanation:
52+22=74
Determine whether the conclusion is valid AND explain. You want to know how the residents of your town feel about building a new baseball stadium. You randomly survey 100 people who enter the current stadium. Eighty support building a new stadium, and twenty do not. So, you conclude that 80% of the residents of your town support building a new baseball stadium.
Answers
Answer: The answer is valid, because you survey 100 people and 80 of them support building a new stadium.
Step-by-step explanation:
80% agree. 80/100 = 80%
which set of pairs represents a function? PLSS HURRY (100 POINTS)
Answers
Answer:
{(0, 0), (1, 2), (2, 4), (3, 4)}
Step-by-step explanation:
A set of ordered pairs that represent a function is one in which each different ordered pair has a unique x-coordinate (so no two different ordered pairs can have the same x -coordinate).
Therefore, {(0, 0), (1, 2), (2, 4), (3, 4)} is a function as each different ordered pair has a unique x-coordinate.
The other sets all have different ordered pairs that share the same x-coordinate and so these sets do not represent functions.
The vertical line test is also used to determine whether a graph represents a function. If the vertical line intersects the graph only once, then the curve represents a function. This test can be applied to ordered pairs, in that if two ordered pairs have the same x-coordinate but different y-coordinates, they will be on the same vertical line and therefore do not represent a function.
Which net matches the solid figure shown below?
Answers
There are 14 red, 10 yellow, 5 green, and 3 purple candies in a bag. What is the probability that a candy chosen at random is not red?
Answers
Answer: 9/16
Work Shown:
14 red + 10 yellow + 5 green + 3 purple = 32 total
(32 total) - (14 red) = 18 that aren't red
18/32 = 9/16 is the probability of picking something that isn't red.
what is x
1/3+3=4-x
This is too hard for me
Answers
Answer:
x = 2/3
Step-by-step explanation:
Add the numbers
[tex]\frac{1}{3}+3=4-x[/tex]
[tex]\frac{10}{3}=4-x[/tex]
Rearrange terms
[tex]\frac{10}{3}=-x+4[/tex]
Subtract 4 from both sides of the equation
[tex]\frac{10}{3}-4=-x+4-4[/tex]
Simplify
[tex]\frac{-2}{3}=-x[/tex]
Divide both sides of the equation by the same term
[tex]\frac{-2}{3}/1=\frac{-x}{1}[/tex]
Simplify
[tex]x=\frac{2}{3}[/tex]
[RevyBreeze]
A) Yes, at positive x-coordination or zero
B) Yes, at negative x-coordination or zero
C) Yes, at negative and positive x-coordinates
D) No, they will not intersect
Answers
I made points on the lines of the graph at (-4, -4), (-2, -2), and (2, 2), which don't intersect so I believe the answer is D.
A) Yes, at a positive x-coordination or zero.
B) Yes, at a negative x-coordination or zero.
C) Yes, at negative and positive x-coordinates.
D) No, they will not intersect.
Write an expression for the area of the shaded region.
Answers
Answer:
There is no picture
Step-by-step explanation:
40 POINTS NOW HELP 5 MINS COME ON HELP
Answers
❥[tex]\Large\pmb{ \underline {\tt Answer}}[/tex]
2x + 5 = 3x - 25
5 + 25 = 3x - 2x
x = 30
Option B
reason:- Attached picture
Answer:
letter C is the right answer
Step-by-step explanation:
hope it helps!
# CARRY ON LEARNING
BRAINLIEST ME PLEASE PLEASE PLEASE PLEASE PLEASE
Once a large pink ribbon, the sign of the fight against breast cancer, was erected out of pink post-it notes on a billboard. If the area of therectangular billboard covered by the ribbon was approximately 4200 square feet, and the width of the billboard was approximately 60 feet, what
was the height of this billboard?
Answers
Answer:
The answer is 70 feet
Step-by-step explanation:
Given;The area of therectangular billboard covered by the ribbon was approximately 4200 square feetThe width of the billboard was approximately 60 feet.To Find;The height of this billboard = ?Formula;Area = Width × HeightHere, We know the area so,
Area = Width × Height
Height = Area ÷ Width
H = 4200 ÷ 60 feet
H = 70 feet
Thus, The height of the billboard is 70 feet
-TheUnknownScientist 72
this is my last question please help
Answers
Answer:
71,3Step-by-step explanation:
the first nuclear every time in this topic is y and the second one is x
Sam has a party with snacks. One bowl of snacks has a mixture of fish crackers. There are 15 pretzels, 3 orange, 5 yellow, and 7 green fish crackers in the bowl.
What percent of the fish crackers are yellow?
Answers
Explanation:
Ignore the 15 pretzels. We're only focusing on the fish crackers.
3 orange + 5 yellow + 7 green = 15 total fish crackers
Of that total, 5 are yellow.
So approximately 5/15 = 1/3 = 0.333 = 33.3% of the crackers are yellow.
tracy earns $12/h as a cashier. When she works more than 32h in 1 week, she earns time-and-a-half. How much does tracy earn for working 40h in 1 week?
Answers
Answer:
I know you from somewhere
solve the inequality n+3<-7
Answers
Answer:
Step-by-step explanation:
n<-7-3
n<-10
=> n= (-infinitive ; -10)
solve system of equations:
-8x - 10y = 10
3x + 2y = 12
Answers
Answer:
x=10
y = -9
Step-by-step explanation:
-8x - 10y = 10
3x + 2y = 12
Multiply the second equation by 5
5(3x + 2y) = 12*5
15x+10y = 60
Add this to the first equation to eliminate y
-8x - 10y = 10
15x+10y = 60
-----------------------
7x + 0y = 70
Divide by 7
7x/7 = 70/7
x = 10
Now find y
3x+2y = 12
3(10) +2y = 12
30 +2y =12
Subtract 30 from each side
2y = 12-30
2y = -18
Divide by 2
2y/2=-18/2
y = -9
Examine the diagram.
A triangle has angles 1, 2, 3. Angle 4 is an exterior angle to angle 3.
For the angles shown in the diagram, which statements are true? Select all that apply.
The sum of m∠3 and m∠4 is 180°.
The sum of the measures of the adjacent interior angle and one of the remote interior angles is equal to the measure of the exterior angle.
∠3 is supplementary to ∠1.
m∠4 = m∠1 + m∠2.
m∠1 + m∠2 + m∠3 = 180°
Answers
The statements that are true regarding the diagram given are:
m∠3 + m∠4 = 180° (angles on a straight line)m∠4 = m∠1 + m∠2 (external angle theorem)m∠1 + m∠2 + m∠3 = 180° (triangle sum theorem).What is the Triangle Sum Theorem?The triangle sum theorem states that all the three interior angles in a triangle have a sum of 180 degrees all together.
Thus, in the diagram given, the statements that are all true are:
m∠3 + m∠4 = 180° (angles on a straight line)
m∠4 = m∠1 + m∠2 (external angle theorem)
m∠1 + m∠2 + m∠3 = 180° (triangle sum theorem).
Learn more about triangle sum theorem on:
https://brainly.com/question/7696843
Answer:
A, D, E
Step-by-step explanation:
I got it right.
On Monday a shop receives $60.30 by selling bottles of water at 45 cents each
How many bottles are sold?
Answers
Answer:
134 bottles
Step-by-step explanation:
For this, I set up a proportion :
60.30/x = 0.45/1
60.30(1) = 0.45x
60.30/0.45 = 0.45x/0.45
x = 134 :)
Answer:
134 bottles
Step-by-step explanation:
conversion of dollars to cent:
$1 equals to 100 cents.
$60.30 will be (60.30*100) cents → 6030 cents
Bottles sold: total money / each bottle cost.
→ 6030 / 45
→ 134
So 134 bottles are sold for 45 cents to earn $60.30 or 6030 cents.
BRAINLY PLS HELP ME ON THIS QUESTIONNN
Answers
Answer:16 square feet
Step-by-step explanation:
add the length of the top and the bottom face them multiply the sum of those two by the perpendicular height between them and the product is to be divided by 2 : ((a+b)h)/2)
Answer:
16 ft²
Step-by-step explanation:
First you'll find the area of the rectangle forming in the trapezoid:
3 x 4 = 12
Next, you'll think logically and understand that if BC is 3 feet, EF is also 3 feet. So, you'll subtract 5 - 3 = 2, so AE and FD is 1 foot.
So, you'll now multiply to find the area of the whole trapezoid:
4 x 1 = 4
So:
4 + 12 = 16
The probability that Hannah will be late for dinner is 1/2 what is the probability that she will be late for dinner two nights in a row?
Answers
Answer:
1/4
or 25%
or 0.25
Step-by-step explanation:
With a question like this, you have to multiply.
1/2 * 1/2 = 1/4
or
0.5 * 0.5 = 0.25
A savings account earns 5% interest each year, compounded monthly. If a person invests $300 and makes no further deposits or withdrawals, what is the balance in the account after 3 years?
Answers
Because 5% of $300 is $15
So since it’s 3 year then we multiply
3x$15= $45 so $300 plus $45 = $345
I hope this helps
Please mark as brainliest
Find a polynomial that represents the area of the shaded region.
Answers
Answer:
[tex](x^{2} +6x+8)-(x^{2} )[/tex]
Step-by-step explanation:
Area of Green including the white area:
[tex](x+4)(x+2)[/tex]
[tex]x^{2} +6x+8[/tex]
Area of White area is:
[tex]x^{2}[/tex]
Area of Green without white would be:
[tex](x^{2} +6x+8)-(x^{2} )[/tex]
what is the hypotenuse of 21ft and 28ft
Answers
Answer:
See below.
Step-by-step explanation:
The hypotenuse is 35.
-hope it helps
I need the answer for part b
Answers
Answer:
4/4
Step-by-step explanation:
1/4 plus 1/4 plus 2/4 is 4/4
Given triangle ABC is similar to triangle DEF, angle A measures 30 degrees, and angle F measures 50 degrees, what is the measure of angle B?
Answers
Answer:
100 degrees
Step-by-step explanation:
Since triangle ABC is similar to triangle DEF, their angles are basically the same.
All angles of a triangle have to add up to 180.
We are already given two angles: 30 and 50
Add them together: 30 + 50 = 80
Now we subtract the number from 180
180 - 80 = 100
The remaining angle has to be 100 degrees
how do you use quadratic functions?
and please get correct!
Answers
Use this for formula
firstly
ax²+bx+c=0
and then
b±√(b²-4ac))/(2a)
1 . step
First compare the given equation with
general form
[tex]{a{x}^{2}\:+\:bx\:+\:c\:=\:0}[/tex]
2. step
Then find the value of discriminant
by the given equation below
[tex]\mapsto{{b}^{2}\:-\:4ac}[/tex]
3. step
subsitute the value of discriminant and other given value in Quadratic formula as per the equation .
[tex]{\rightarrow{\frac{-\:b\:±\:\sqrt{{b}^{2}\:-\:4ac}}{2a}}}\\[/tex]