2cos60° + 3sin-45° - 3sin30° + 2cos90°
= 2 × 1/2 + 3 × -1/√3 - 3 × 1/2 + 2 ×0
= 1 - 3/√3 - 3/2 + 0
= 1 - 3/√3 - 3/2
= 1 - 3/1.732 - 1.5. <----> ( √3 = 1.732 )
= 1 - 1.732 - 1.5
= -2.232
A parachutist's elevation changes by - 72 ft in 9 seconds. What is the change in the parachutist's elevation each second
Answer:
Step-by-step explanation:
dy/dt=-72/9=-8ft/s
On a certain hot summers day, 672 people used the public swimming pool. The daily prices are $1.50 for children and 2.50 for adults. The receipts for admission totaled $1289.00. How many children and how many adults swam at the public pool that day?
Find the measure of the indicated angle to the nearest degree?
Please hurry
Answer:
45 degrees
Step-by-step explanation:
Using the pythagorean theorem, the 3rd side=19. So the triangle is isosceles and therefore the 2 angles we don't know the measure of are congruent. One angle measures 90 degrees. So the last 2 angles must be 90 together, since we know a triangle equals 180 degrees. Therefore the angle we are trying to find is 45 degrees.
what conclusions can you give why some students decided not to go to school?
Step-by-step explanation:
There are a number of reasons why some students decide not to go to school. Some of them may be associated with family and psychological problems such as anxiety and depression, which should be investigated by trained professionals at the school if there is any suspicion of these symptoms.
There is also the possibility that students who have decided not to go to school have been victims of bullying and aggression at school, which causes fear of retaliation and psychological trauma that negatively impact the person's life.
It is important that schools provide psychological support and an active policy that combats bullying and is pro-integration of students and diversity.
gamestop is losing value at 5% per day. if its 50 dollars per share to day, how much will it be worth at the end of the week
Answer:
GameStop will be worth $34.92 by the end of the week
Step-by-step explanation:
It's sad, but true lol
SOMEONE PLZ ANSWER THE NUMBERS!!!!
Answer: The median for the set of numbers is B. 11.
Step-by-step explanation: Order numbers least to greatest. 4,4,9,10,12,23,68,70
Find the middle numbers:
10, 12.
Find the number in between 10 and 12.
= 11
Answer:
B: 11
Step-by-step explanation:
a + x + p + 8 = r
solve for x
all help is appreciated!!
a+x+p+8 =r
(to solve isolate x)
x=r-(a+p+8)
x= r-a-p-8
A group of 8 friends went to lunch and spent a total of $76, which included the food bill and a tip of $16. They decided to split the bill and tip evenly among themselves.
Which equations and solutions describe the situation? Select two options.
The equation StartFraction 1 over 8 EndFraction (x + 16) = StartFraction 76 over 8 EndFraction represents the situation, where x is the food bill.
The equation StartFraction 1 over 8 EndFraction (x + 16) = 76 represents the situation, where x is the food bill.
The solution x = 60 represents the total food bill.
The solution x = 60 represents each friend’s share of the food bill and tip.
The equation 8 (x + 16) = 76 represents the situation, where x is the food bill.
Answer:
1) The equation 1/8(x+16)=76/8 represents the situation, where x is the food bill.
2) The solution x=60 represents the total food bill.
These both answers are correct.
Step-by-step explanation:
Since there are 8 group of friends, and the total amount spent by them is $76 including the tip i.e $16.
If x is the food bill our equation can be:
(x+16)/8 = 76/8
(x+16)/8 = 9.5
x+16= 9.5*8
x= 76 -16
x= 60
The food bill is x=60.
Step-by-step explanation:
Answer:
A and C
Step-by-step explanation:
got it right on ed
Urgent please help..
Answer:
0.39
Step-by-step explanation:
Height of triangle (h) = 2.5 + 4 = 6. 5 cm
Base of triangle (b) = 3 + 3 = 6 cm
Radius of circle (r) = 4 cm
Required probability = Area of triangle/Area of circle
[tex] = \frac{ \frac{1}{2} bh }{\pi {r}^{2} } \\ \\ = \frac{ \frac{1}{2} \times 6 \times 6.5 }{3.14 \times {4}^{2} } \\ \\ = \frac{3 \times 6.5}{3.14 \times 16} \\ \\ = \frac{19.5}{50.24} \\ \\ = 0.388136943 \\ \\ \approx0.39[/tex]
Only 3% of turtle hatchlings will live to become breeding adults. How many turtles must have been born if the current number of breeding adults is 1,200?
Answer:
116400 I believe not 100% sure tho
The total number of turtles born is 40,000.
What is percentage?Percentage is defined as a given part or amount in every hundred. It is a fraction with 100 as the denominator and is represented by the symbol "%".
Given that, only 3% of turtle hatchlings will live to become breeding adults.
The current number of breeding adults is 1,200
Let the total number of turtles born be t.
Now, 3% of t=1200
3/100 ×t=1200
3t=120000
t=40000
Therefore, the total number of turtles born is 40,000.
To learn more about the percentage visit:
brainly.com/question/24159063.
#SPJ3
[tex]3q+2p+7[/tex]3q+2q+7
Answer:
that seem pretty hard but i think ik it
WILL MARK BRAINLISTTTTTTTTTTTT
Answer:
f(2) is -2
Step-by-step explanation:
plug 2 in everywhere you see x
-2(2)^2-2(2)+10
-2(4)-4+10
-8-4+10
-2
hope this helped!
please help
A flower bed is in the shape of a triangle, with a base of 15 feet and a height of 9 feet. What is the area of the flower bed?
24 square feet
32.5 square feet
67.5 square feet
135 square feet
Answer:
Option c - 67.5
Step-by-step explanation:
Base= 15
Height = 9
Area= 1/2 x b h = 1/2 x 9 x 15 = 67.5 feet
help me with an answer i'm bad doing maths
Answer:
3(x+5)≡3x +a
3x + 15≡ 3x +a ⇒ a=15
I hope you understood!
Answer:
3(x+5)=3x+a
3x+15=3x+a
a=3x-3x+15
a=+15 ........ans
There is a bag with 10 balls inside it. 2 are footballs, 3 are soccer balls, 1 is a soittall, 2 are baseballs, and 2 ore basketballs, you were to reach in and grab one ball, what is the probability that it is a basketball or soccer ball? P(basketball or soccer ball)
Answer:
5/10, 1/2, 50% and 0.5 are all correct answers in different forms.
Step-by-step explanation:
5 of the balls are basketballs or soccer balls. This is 5/10 of the balls.
Part I. A New Bike and Skateboard Problem
Uncle Eddie asked McKenna and Lara to order 108 new wheels for the 42
skateboards and bicycles in his repair shop. How many bicycles and how
many skateboards are in Uncle Eddie's shop?
Answer:
Number of bicycles = 30
Number of skateboards = 12
Step-by-step explanation:
Let the number of bicycles = x
Let number of skateboards = y
It is given that there are total bicycles and skateboards = 42
∴ x + y = 42 ........(1)
Now a bicycle has two tires and a skateboard has four tires, this gives an equation :
2x + 4y = 108 .......(2) (Since uncle Eddie asks to order 108 tires)
Therefore, solving equation (1) and (2), we get
2(x+y=42)
2x+4y=108
2x+2y = 84
- (2x+4y = 108)
- 4 y = - 24
or 4 y = 24
or y = 12
Now substituting the value of y in equation (1),
x + 12 = 42
x = 42 -12
x = 30
So number of bicycles = x =30
And number of skateboards = y = 12
If the side lengths of a cube are 16 feet, what is the correct way to write the expression to represent the volume of the cube in exponential form?
A. 16 ⋅ 3
B. 16 ⋅ 16 ⋅ 16
C. 16^3
D. 3^16
Your total at a
restaurant is $50. If you
want to tip the server
15%, what is your
total?
Answer:
tip: $7.50
total: $57.50
Step-by-step explanation:
you change the 15% into a decimal by moving the the decimal point 2 spots to the left so now you have .15
next do .15 * 50 to get 7.5, which is the tip
now to find the total, add 7.5 + 50 to get 57.5
Answer:
your total cost would be $57:50
find the value of (a+b)^2 if a^2+b^2=10 and ab=3
Answer:
(a+b)^2 if a©+2b
Step-by-step explanation:
i not sure
Answer:
16
Step-by-step explanation:
.
expand 2x(3x+2y)
answer needed asap
Answer:
6x^2+4xy
Step-by-step explanation:
Hope that helps you out!
Answer:
Step-by-step explanation:
6x^2+4xy
In PQR, Q= 76, PQ = 18, and QR = 27
Please find angle P, T and PR for 5
Answer:
Step-by-step explanation:
Given:
m<Q = 76°
PQ = r = 18
QR = p = 27
Required:
Find P, T, and PR (q)
Solution:
✔️To find PR(q), apply the Law of Cosines.
Thus:
q² = r² + p² - 2rp×cos(Q)
Plug in the values
q² = 18² + 27² - 2×18×27×cos(76)
q² = 1,053 - 235.148
q² = 817.852
q = √817.852
q = 28.6 (nearest tenth)
✔️Find P by applying the Law of Sines:
[tex] \frac{sin(P)}{p} = \frac{sin(Q)}{q} [/tex]
Plug in the values
[tex] \frac{sin(P)}{27} = \frac{sin(76)}{28.6} [/tex]
[tex] sin(P) = \frac{sin(76)*27}{28.6} [/tex]
[tex] sin(P) = 0.9160 [/tex]
[tex] P = sin^{-1}(0.9160) [/tex]
P = 66.3° (nearest tenth)
✔️R = 180 - (P + Q)
R = 180 - (66.3 + 76)
R = 37.7°
Can someone help-
Im lazy lol
Ill mark brainliest c:
Answer:
c=34
Step-by-step explanation:
Use the Pythagorean theorem [tex]a^{2} +b^{2} =c^{2}[/tex]
(16^2)+(30^2)=c^2
1156=c^2
[tex]\sqrt{1156}[/tex]=c
c=34
PLEASE HELPPPPP SOOOONNNNN
Mr. Sanchez’s class sold Snickers for $1.50 each and Mr. Kelly’s class sold bottles of fruit juice for $1.26 each. Together, the classes sold 82 items and earned $115.56 for their school.
(a) Write and solve a system of equations that model the problem. Show all your work.
X*1.50+Y*1.26= 115.56
(b) Which class earned more money?
(c) How much more money did that class earn?
Answer:
Mr. Kellys class sold more fruit juice I think. I could be wrong but i am pretty sure that is the answer!
Step-by-step explanation:
A trampoline has a jumping surface that is 15.7 ft. long and 12 ft. wide. What is the area of the jumping surface?
Answer:
188.4
Step-by-step explanation:
because if you multiply 15.7 and 12 you get 188.4 and that is the area of the jumping space.
Answer:
area = length×wide=15.7×12=188.4ft²
Water is pumped out of a 500-gallon tank at a rate of 2.5 gallons per second. The inequality 500−2.5t<100 can be used to determine the time t in seconds, after which there will be less than 100 gallons of water remaining in the tank.
Answer:
[tex]160\ \text{s}[/tex]
Step-by-step explanation:
The inequality that represents the situation is
[tex]500-2.5t<100[/tex] where [tex]t[/tex] is the time in seconds
[tex]\Rightarrow -2.5t<100-500[/tex]
[tex]\Rightarrow -2.5t<-400[/tex]
[tex]\Rightarrow 2.5t>400[/tex]
[tex]\Rightarrow t>\dfrac{400}{2.5}[/tex]
[tex]\Rightarrow t>160\ \text{s}[/tex]
So, the time after which there will be less than 100 gallons of water is [tex]160\ \text{s}[/tex].
please so work for the fraction in the picture. thank you so much in advance
Answer:
option A real x is a number
- 7(4-1) = 14
- 28 - 7r = 14
- 7r = 42
r = -6
What the right answer
Is this your question?
-7(4-1r) = 14
-28+7r=14
7r=32
r=32/7
Help me pleaseeeeeeeeeeeee
Answer:
44,10
Step-by-step explanation:
I think this is the answer
Answer:
$44.10
Step-by-step explanation:
tip = 35 x .20 = 7.00
tax = 35 x .06 = 2.10
9.10 + 35.00 = 44.10
Find the area of the triangle. Round your answers to the nearest tenth if necessary.
14 in
125 degrees
15 in
Answer:
14in
Step-by-step explanation:
basta ganun hirap nun
sara bought 36 ounces of cheese for 3.24 what was the unit price of cheese
Answer:
$0.09
Step-by-step explanation:
Unit price= total price/ total units
$3.24/ 36oz= $0.09
Answer:
$0.09
Step-by-step explanation:
i just used my homework for this so i don't really know how to explain it cause i just had my answer there.
( 3.24 / 36 = $0.09 )
