Prove this identify : 2 cos^2 (45°-A ) = 1 +sin 2 A
Musa loves playing Fortnit each evening. One battle lasts 1/2 of an hour. His mom lets him play 3 1/2 hours per week. How many rounds of Fortnight can he play?
Answer:
Musa can play 7 rounds a week
Step-by-step explanation:
There's two 1/2 intervals in one hour, so 3 would be 6, plus the 1/2 hour equals 7 rounds
Solve the equation.
- 5x - 3 = 2x + 11
.
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
Answer:
= 14/3
Step-by-step explanation:
add 3 to both sides of the equation
Angle measure: What is the m
Answer:
m< JKL = 63°
m< MKL = 27°
Step-by-step explanation:
(12x+3) + (6x-3) =90°
18x = 90
x= 90/18
x=5
m< JKL (12x+3) = 12(5)+3=60+3=63
m< MKL (6x-3)=6(5)-3=30-3=27
I hope I helped you^_^
Andrew has a summer job doing yard work he is paid 15$ per hour and a 20 bonus when he completes the yard. He was paid 85$ for completing one yard. Write an equation to represent the amount of money he earned
pls some help im so stuck im stuck as a cat in a tree dude plz help i
ill give u 100 pointes
Answer:
It's the positive i, no matter what i is equal to.
Plz help answer these thank you so much
ill mark brainlest
Answer:
#1
6 × n + 15 = -42
6n + 15 = -42
6n = -42 - 15
6n = -57
n = -57/6
n = -19/3
#2
b + 3/2b + b + 45 + 2b - 5 + 90 = 540
b + 1.5b + b + 45 + 2b - 5 + 90 = 540
5.5b + 130 = 540
5.5b = 540 - 130
5.5b = 410
b = 410/5.5
b = 74.5
Angles are
b = 74.5
1.5(74.5) = 111.75
74.5 + 45 = 119.5
2(74.5) - 5 = 144
Derek is twice as old as Sarah. Two years ago the sum of their age was 20. How old is each now?
Answer:
Derek is currently 18 and Sarah is 8
Step-by-step explanation:
20=(x-2)
-2 because it was 2 years ago
20=(x-2) + (2x-2)
2x because Derek is twice as old as Sarah
20=(x-2) + (2x-2) can be changed to
20= 3x - 4 when you combine like terms.
24 = 3x you divide by 3 and you get 8=x
You plug in the number and you get the answer
20=(8-2) + (2*8 - 2) which can be transferred to
20= 6 + 14
Factorise by grouping the expression:
( − ) 2 − ( − ) + 3 − 3
_(_)+_(+)_so
2-3-3
=1-3
=2
If a = -3.4 and b = -3.6, which of the following inequalities is not true?
b ≤ a
| b| < a
| a| ≤ | b|
a > b
Answer:
a>b
Step-by-step explanation:
We know between negative numbers on comparison less value is greater[tex]\\ \sf\longmapsto -3.4\gt -3.6[/tex]
[tex]\\ \sf\longmapsto a>b[/tex]
ok, I know this should be easy but I still need help. . . ( I'm in 5th grade so what the-)
Answer
7. is 9.129, 9.219, 9.3, 9.37
9. is 2.8, 2.81, 2.930, 2.941
I can't really see 8 or 10 but if you comment them I would be happy to help.
Put the following numbers from greatest to least greatest 1 17 51 -4 -25
Answer:
51, 17, 1, -4, -25
Step-by-step explanation:
Hope this helps
Suppose a is an irrational number and is a rational number. Can their sum be rational? Explain your answer.
Answer:
It can
Step-by-step explanation:
If it ends up a whole number, then yeah-that's rational. But if it's a fraction-that's irrational.
Could someone explain me step by step on how to do division since I’m having a hard time on understanding it?
is 53 an improper fraction or a proper fraction?
What is the solution to this equation?
2x + 6 = 20
A. x = 13
B. x = 7
C. x = 52
D. x = 28
ANSWER: B (x = 7)
Answer: B. x = 7
Step-by-step explanation:
2x + 6 = 20
2x = 20 - 6
x = 14/2
x = 7
the perimeter of a rectangular room is 54 m. the length is 6 m longer than the width. what are the dimensions of the room?
Answer:
Step-by-step explanation:
Width =w
Length = w + 6
Perimeter of rectangular room = 54 m
2*(length +width ) = 54
2*(w +6 + w) = 54
2*(w +w + 6) = 54 {Combine like terms}
2*(2w + 6) = 54
Use distributive property
2*2w + 2*6 = 54
4w + 12 = 54
Subtract 12 form both side
4w = 54 - 12
4w = 42
Divide both sides by 4
w = 42/4
w = 10.5 m
Length = 10.5 + 6 = 16.5 m
Length = 16.5 m
Width = 10.5 m
Evaluate. 11 + 4 divided by 3 times the sqaure root of 64
Answer:
40
Step-by-step explanation:
it would be first bodmas so
(15) /3 * root 64
5 * root 64
5*8
40
Answer:
The answer is 40
Step-by-step explanation:
(11+4)÷3×√64
= (11+4)÷3×8
= 15÷3×8
= 5×8
= 40
〜SelenaCreate a storyline (word problem) using the following algebraic expressions: P4 + i JP 1,000 Part A: r D Part B: 75 – 3m
The Do-Gooders decide to have a fundraiser featuring local bands. In order to make money for the fundraiser, they charge $25 per person. They know there will be some expenses, but for now they would like to see how much money they could potentially make from selling tickets to the concert.
Answer:
Step-by-step explanation:
Sample response: y=25x, where x is the number of attendees
Can you figure out the solution?
Options:
a) 8
b) 6
c) 2
d) 5
Answer:
6
Step-by-step explanation:
the answer is correct yep
Damien is constructing a segment that is congruent to AB shown below. Which of the following is a step Damien will use in the process? Use a compass to draw an arc above point A . Use a compass to measure the length of segment AB . Use a compass to draw an arc between points A and B . Use a compass to draw an arc from any point between A and B on the segment to a place above the segment
Answer:
a
Step-by-step explanation:
Samuel must choose a 4-digit PIN number. The first 2 digits must be numbers cannot repeat. The 3 and 4th digits are letters that cannot repeat. How many different pins are possible with these restrictions?
A. 58,500
B. 70
C. 46,800
D. 72
what is the quotient for 68.32 / 2/8
n
K
Which of the following is not a correct name for the line above?
A
В.
IRISIRI
C С
D
Answer:
B
Step-by-step explanation:
helpppppp me pleaseeeeeeee If 6 - 7 = -1, which of the following is true?
-1 + 7 = 6
-1 + (-7) = 6
7 - 6 = -1
7 - (-1) = 6
PLEASE HELP!! I WILL ALSO GIVE BRAINLIEST
Answer:
B
Step-by-step explanation:
A day care center charges 60$ per week for one child, plus 20$ per sibling. The equation that describes the total charge t for the number of siblings s is t=20s+60. What is the total cost for two siblings?
Answer:
80$ per week if you mean only 2 siblings
100$ per week if you mean the first child plus 2 siblings
Step-by-step explanation:
for the equation Y= 2(x+4)-3 what ordered pair what are used to start a graphing PLEASEEEE HELP
Answer:
(4,-3)
Step-by-step explanation:
anyone solve this maths questions from integers
Step-by-step explanation:
SEE THE IMAGE FOR SOLUTION
