9514 1404 393
Answer:
cos(20°)
Step-by-step explanation:
The angle difference formula for cosine is ...
cos(α -β) = cos(α)cos(β) +sin(α)sin(β)
If we let α = 50° and β = 30° then this matches the given expression:
cos(50° -30°) = cos(50°)cos(30°) +sin(50°)sin(30°) = cos(20°)
in order for students to have a club at school they need a minimum of 22 students. If there are 17 students signed up for the club, how many more students does the club need
Answer: 5 more students need to sign up.
Haley has volunteered to make costumes for the eighth-grade play. She needs to make 6 jester costumes. Each jester costume requires 4 3/4yards of fabric. How much fabric in yards, will Haley use in all?
Answer: I believe h\Haley needs 28.5 yards of fabric.
Step-by-step explanation:
4 3/4 x 6 = 28.5
A ball is thrown from the top row of seats in a stadium. The function h(t)=-16t2+48t+160 gives the height, t, in feet, of the ball t seconds after it is thrown. How long will it be before the ball hits the ground?
Answer:
t = 5 s
Step-by-step explanation:
The function that gives the height in feet of the ball t seconds after it is thrown is :
[tex]h(t)=-16t^2+48t+160[/tex]
We need to find how long will it be before the ball hits the ground. When it hits the ground, its height will be equal to 0.
So,
[tex]-16t^2+48t+160=0[/tex]
We need to solve this equation. When we solve, we get its solution as shown in the figure. We can see that t = -2 s and t = 5 s.
t = -2 s is not possible.
Hence, the ball will hit the ground before 5 seconds.
PLEASE HELP ASAP!?!?!?
Answer:
i only did the second one!
but i am still trying to solve the first.
Hope I am correct! please forgive me if this is wrong!
I did also the first one!
............Find .....X......
Answer:
x=50
Step-by-step explanation:
(x-10)+x+90=180
2x-10+90=180
2x+80=180
2x=100
x=50
What is a sales tax?
Sales tax is an additional amount of money you pay based on a percentage of the selling price of goods and services that are purchased. For example, if you purchase a new television for $400 and live in an area where the sales tax is 7%, you would pay $28 in sales tax. Your total bill would be $428.88
Which equation is equivalent to 6 + 3(x + 4) = 13
What is the circumference of the circle
A. 18.84
B. 17.6
C. 21.79
D. 15.65
Answer:
18.84
Step-by-step explanation:
The formula for circumference is 2(pi)r, I think. The radius is 3. 3 times 2 is 6. 6 times 3.14 is around 18, I think.
hope this helps
Answer:
A
Step-by-step explanation:
A number squared increased by 5 is 41
the question is in the picture. will give brainilist.
Step-by-step explanation:
They are perpendicular
Find the value of X
Answer:
should be 80, angle 50 is congruent on both sides to 50+50 equals 100. The triangle sum theorem says a triangle adds up to 180 degrees so we are left with 80, X=80 degrees
5. What is the perimeter of a rectangle with a length of 9x - 4 and a width of 5x+2?
Answer:
14x-2
Step-by-step explanation:
In order to find the perimeter we need to add the length and width together. So adding 5x and 9x gives us 14x. -4+2=-2
The perimeter of a rectangle with a length of 9x - 4 and a width of 5x+2 is, 28x-4
What is the perimeter?Perimeter is a mathematical term, which means total outer boundary of a figure, we define it only for two dimensional figures.
Perimeter = Sum of length of the all the sides
Given that,
length of rectangle = 9x - 4
width of rectangle = 5x+2
As we know,
Perimeter = Sum of length of the all the sides
Perimeter = (9x - 4) + (5x+2) + (5x+2) + (9x - 4)
Perimeter = 28x-4
Hence, The perimeter is 28x-4
To know more about Perimeter check:
https://brainly.com/question/6465134
#SPJ2
what is the answer to this question some one please help me (7−b)+(3b+2)
Answer:2b+9
Step-by-step explanation:
30 POINTS PLEASE PLEASE PLEASE HELP VERY IMPORTANT ‼️‼️‼️‼️‼️Every spring, Colin plants colorful flowers in his garden. This year, he decides to plant
petunias. He buys them at the garden store, brings them back home, and starts planting.
There is a proportional relationship between the amount of time (in minutes) Colin has been
working in his garden, x, and the number of petunias he has planted, y.
x (minutes) y (petunias)
9
11
16
20
16
20
What is the constant of proportionality? Write your answer as a whole number or decimal.
petunias per minute
Answer:
1 per minute
Step-by-step explanation:
9 min = 9 petunias
11 min = 11 petunias
so on and so forth
CAN ANYONE HELP ME PLSS?
Answer: The domain is the 3rd answer
Step-by-step explanation:
Circle K has a diameter of 10 centimeters and a major arc RS is intercepted by a central angle of 190°. Find the length of major arc RS . Round to the nearest tenth.
Answer:
16.6
Step-by-step explanation:
Rylee saved $9 on a $60 pair of
shoes. What percent did she save?
Answer:
Answer is %15
Step-by-step explanation:
9/60 = 0.15
= >0.15 * 100 = 0.15
PLS HELP! ASAP!
Find the value of x in the triangle below
Answer:
the answer is 56
Step-by-step explanation:
because it is an equilateral triangle the other side is 62 so you add 62+62=124 180-124=56
How many solutions does this equation have
6x + 2x - 4= 4(2x - 1)
Answer:
All Real Numbers
Step-by-step explanation:
Step 1:
6x + 2x - 4 = 4 ( 2x - 1 ) Equation
Step 2:
8x - 4 = 8x - 4 Combine Like Terms
Step 3:
8x = 8x Add 4 on both sides
Answer:
All Real Numbers
Hope This Helps :)
simplify the following equation.
y-3=5/7(x-14)
im desperate
Answer:
5x/7-7
Step-by-step explanation:
your welcome , tell me if I'm wrong
1+1??????????????????????????????????????????
Answer: 2
Step-by-step explanation: 1+1=2
Answer:
1+1=2 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Step-by-step explanation:
ANSWER ASAP PLZ Which expression is equivalent to 24 + 64?
8(3 + 64)
8(16 + 56)
8(3 + 8)
8(16 + 64)
Answer:
8(3+8)
Step-by-step explanation:
24+64=88
Now you have to find which expression equals 88.
8(3+64)=8x3+8x64=24+512=536
8(16+56)=8x16+8x56=128+448=576
8(3+8)=8x3+8x8=24+64=88
Therefore, 8(3+8) is correct.
Answer:
C
Step-by-step explanation:
8+3 is 11 and 11 x8 is 88 and 24 + 64 is 88
And I have a question for you
are you flvs
1. which of these is the correct order of the rational numbers from greatest to least ?
A: 5/2, 1, 3/4, 1/2
B: 3/4, 1/2, 5/2, 1
C: 5/2. 1, 1/2, 3/4
D: 1/2, 5/2, 3/4, 1
2. which of these is the correct order of the rational numbers from greatest to least ?
A: 0.34, 3.5, 0.82, 0.57
B: 3.5, 0.82, 0.57, 0.34
C: 0.82, 0.57, 3.5, 0.34
D : 0.57, 3.5, 0.82, 0.34
PLS HELP !
Step-by-step explanation:
AB...................
Need help plsss
Question is below
Answer:
Step-by-step ex
its 0.2
A bakery sells mocha cupcakes and chocolate cupcakes. One day it sold 28 mocha and
52 chocolate. What percent of the cupcakes sold that day were mocha?
Answer:
35% of the cupcakes were Mocha.
Step-by-step explanation:
So, 28 + 52 = 80 which means the question is: 28 is what percent % of 80? And 28 is 35% of 80. Hope I helped! Sorry if not. Have a wonderful day and an even better Christmas break! Remwmber to focus on the positive and give me a follow! ;) Bye!
1. Lauren’s scores on her four math tests are: 83%, 79%, 94%, and 96%. What is the lowest score Lauren needs to achieve an average score greater than 85?
2. Twice an integer increased by 6 is less than 48.
A. Write an inequality.
B. What is the largest integer this could be?
Answer:A
Step-by-step explanation:
Anna made and sold x ceramic vases one week. Her profit, P, in dollars is calculated using the formula P = R - C . Where R represents her revenue and C represents her costs. If R = 25x - 0.5x ^ 2 C = 100 + 5x which expression represents her profit in dollars?
Answer:
-0.5x² + 20x + 100
Step-by-step explanation:
Given:
R = 25x - 0.5x²
C = 100 + 5x
P = R - C
Where,
P = profits
R = Revenue
C = Cost
which expression represents her profit in dollars?
P = R - C
R = 25x - 0.5x²
C = 100 + 5x
= 25x - 0.5x² -(-100 + 5x )
= 25x - 0.5x² + 100 - 5x
= -0.5x² + 20x + 100
The expression which represents her profit in dollars is -0.5x² + 20x + 100
What is the y-intercept of the function?
Answer:
-5
Step-by-step explanation:
The ages of ten employees at a small company are shown below.
30, 32, 35, 35, 38, 38, 38, 40, 40, 45
If the data set were expanded to include a new employee who is 20 years old, how would the mean of the data set change?
A) The mean decreases by 2 years.
B) The mean decreases by about I .6 years.
C) The mean increases by about 1.6 years.
D) The mean does not change.
Answer:
B
Step-by-step explanation:
Before you add 20 the mean is 37.1 after you add 20 it’s 35.54.
37.1-35.54=1.56
Round 1.56 to 1.6
Estimate 5,860÷2.1≈
i really need help on it.
Answer: it 2790
Step-by-step explanation:
The value of 5,860÷2.1 is 2790.
What is division?
In easy phrases, the division may be described because of the splitting of a massive institution into smaller companies such that every institution may have the same number of items. it's far an operation used for identical grouping and the same sharing in math.
What are the terminologies used in the division?dividend, divisor, quotient remainder.Learn more about division here: https://brainly.com/question/25289437
#SPJ2
