Answers
Answer:
titutex=cos\alp,\alp∈[0:;π]
\displaystyle Then\; |x+\sqrt{1-x^2}|=\sqrt{2}(2x^2-1)\Leftright |cos\alp +sin\alp |=\sqrt{2}(2cos^2\alp -1)Then∣x+
1−x
2
∣=
2
(2x
2
−1)\Leftright∣cos\alp+sin\alp∣=
2
(2cos
2
\alp−1)
\displaystyle |\N {\sqrt{2}}cos(\alp-\frac{\pi}{4})|=\N {\sqrt{2}}cos(2\alp )\Right \alp\in[0\: ;\: \frac{\pi}{4}]\cup [\frac{3\pi}{4}\: ;\: \pi]∣N
2
cos(\alp−
4
π
)∣=N
2
cos(2\alp)\Right\alp∈[0;
4
π
]∪[
4
3π
;π]
1) \displaystyle \alp \in [0\: ;\: \frac{\pi}{4}]\alp∈[0;
4
π
]
\displaystyle cos(\alp -\frac{\pi}{4})=cos(2\alp )\dotscos(\alp−
4
π
)=cos(2\alp)…
2. \displaystyle \alp\in [\frac{3\pi}{4}\: ;\: \pi]\alp∈[
4
3π
;π]
\displaystyle -cos(\alp -\frac{\pi}{4})=cos(2\alp )\dots−cos(\alp−
4
π
)=cos(2\alp)…
1
Top
Display
Related Questions
please help brainliest and 50 points for whoever answers all of these first
Answers
Answer:
my laptop doesnt let me download pdf :/
I have no clue how to do my math do you think that you could help me
Answers
Answer:
maybe if i know the answer ill help
Which of the following expressions is equivalent to 30 + 40?
A. 5(25 + 35)
B. 10(3 + 4)
C. 15(2 + 3)
D. 5(6 + 8)
Answers
Answer:D. 5(6+8)
Step-by-step explanation:First you need to distribute. Multiply 5 by both numbers inside parentheses. 5x6=30 and 5x8=40. This gives you 30+40
Six times a number is forty two.
Write the equation?
Answers
Answer:
6*n=42
Step-by-step explanation:
n=7 if you need that info
Malik has $575 in the bank and each week he withdraws $25 out of his
account. How much money will he have after 8 weeks?
Answers
Answer:
375$
Step-by-step explanation:
25*8 is 200, 575-200 is 375
Solve for y 2x-5y=10
Answers
Answer:
y = 2/5x - 2
Step-by-step explanation:
Step 1: Write equation
2x - 5y = 10
Step 2: Solve for y
Subtract 2x on both sides: -5y = 10 - 2xDivide both sides by -5: y = -2 + 2/5xRewrite: y = 2/5x - 2explanation:
write the equation out—
-5y=10-2x
subtract 2x from both sides —
-5y=10-2x
divide both sides by -5 —
y=-2+2/5x
rewrite your equation —
y= 2/5x-2
In the expression x/5 -3 which is the correct order in which operations have been done to x?
Answers
12 out of 100 kids make it to the Houston Rodeo. How many kids will make it
out 750?
Answers
Answer:
90/750 or 8.33 round and it would be 9 kids or 45/375
Step-by-step explanation:
12/100 to ?/750
100 to 750 would be 7.5 *100
so 12 *7.5 = 90
90/750= 8.33
or 45/375
Ratio of 12:100
12 x 7 and 100 x 7
84:700
12:100 / 2 = 6:50
90:750
Out of 750 kids, 90 make it
I'm pretty sure anyway, hope this helps!
12r-5=
what is the anser to this problem
Answers
24r-10 now we have to make it equivalent to 12r-5
So all we will do is put it in a fraction bar
24r-10 is the numerator and 2 is the denominator
So the final result is: (24r-10)/2
What is A-1?
-3 -2
4 8
Answers
can I see a picture of it
Please help ill give brainlist
Answers
Answer:
The answer is c
I'll give u full brainlist if u do this!
calculate the agerage speed for each sutuation, rounding your answer to two dicimal places where appropriate:
a) a bus travels 876km in 16 hours
b) an athlete runs 10 km in 26.44 minutes
Answers
Answer:
a. 54.75
b. 2.64
Step-by-step explanation:
Question 4 of 10
List all the factors of 33 from least to greatest. Enter your answer below,
using a comma to separate each factor.
Answer here
SUBMIT
Answers
Cameron has 54 balls. He wants to put the same number of balls into each 9 buckets. Witch multiplication equation shows a way to represent the number of balls that should go in the bucket. 1. 9 x _ = 54 2. 9 x 54 = _ 3. 54 x _ = 9 4 . 9 x 9 = _
Answers
3) There are 32 students in a class . Twenty four of those students are women . What percent are men ?
Answers
Answer:
like this so i can get points ye boi
Step-by-step explanation:
can yall help me plz
Answers
Answer:
C. 1/4
Step-by-step explanation:
up 1, right 4
Can someone help me ? I need to get the answer but I don’t know how to do it?
Answers
Answer:
D) 29.41 oz
Step-by-step explanation:
Maya has 15 cousins, which means she is making 15 bags.
She has 441.15 oz of candy in all. Divide 441.15 with 15:
441.15/15 = 29.41
29.41 oz is your answer, or D).
~
Answer:
D
Step-by-step explanation:
441.15/ 15
I calculated it.
Have a nice day!
What strategy would be the best to solve this problem? Ann-Marie bought apples. She kept one-third for herself and gave the rest to 4 friends. Each friend got 2 apples. How many apples did Ann-Marie buy? A. guess, check and revise B. work backwards C. use a formula D. look for patterns
Answers
Answer:
D. Look for patterns
Step-by-step explanation:
To solve :
Assume number of apples bought = x
Fraction kept = 1/3 of x
Fraction shared = (x - x/3) = (3x - x) /3 = 2x/3
Number of people who shared (2x/3) = 4 with each getting 2
Total number shared = 4 * 2 = 8
Fraction shared = total shared
2x/3 = 8
Multiply both sides by 3
(2x/3) * 3 = 8 * 3
2x = 24
x = 12
Hence, Anne-Marie purchased 12 apples
Need help Asap, Tysm if you respond!!
Answers
Answer:
20
Step-by-step explanation:
insert those variable values like this
[tex]( 4 + 8) {}^{2} \div 4 - 2(8)[/tex]
if you want more explanations pm me
Sara and Gordon win some money and share it in the ratio 5:3. Sara gets £30 more than Gordon. How much did Gordon get?
Answers
Answer:
45
Step-by-step explanation:
if Sara has 30 more than Gordon and the ratio is 5:3. then sara has 2× X more than Gordon. 30 ÷ 2 = 15.
15 = X
15 × 3 = 45
Sara has 75
(sorry if it's confusing)
solve by substitution
y=6x-23, 4x-5y=37
Answers
Answer:x=3 , y=-5 OR (3,-5)
Step-by-step explanation:
what is a good way to get better at algebra
Answers
Answer:
study hard and find shortcuts to make it easier for you. also do not hesitate to ask teachers for help. it is their job to help
Step-by-step explanation:
Find the line that is parallel to y=3x-5 and goes through the point (5,1)
Answers
Answer:
y=3x-14
Step-by-step explanation:
if its parallel
they it must be y=3x+b
and plug in x and y
you get the answer
Hope this help ya
<3
Red
Answer:
y = 3x - 14
Step-by-step explanation:
y = mx + b
1 = 3(5) + b
1 = 15 + b
b = -14
y = 3x - 14
4x-6>6x-20 solve for the inequality
Answers
Answer:
x < 7
Step-by-step explanation:
4x - 6 > 6x - 20
Add 6 to both sides.
4x - 6(+6) > 6x -20(+6)
Simplify.
4x > 6x - 14
Subtract 6x from both sides.
4x(-6x) > 6x(-6x) - 14
Simplify.
-2x > -14
Multiply both sides by -1 (reverse the inequality).
(-2x)(-1) < (-14)(-1)
Simplify.
2x < 14
Divide both sides by 2.
2x/2 < 14/2
Simplify.
x < 7
Which of the following statements are true of a transversal?
It is a line.
It is parallel to other coplanar lines.
It intersects two or more coplanar lines.
It bisects line segments.
It can never be perpendicular to other lines.
Answers
Answer:
Intersects two or more coplanar lines
Step-by-step explanation:
In geometry, the transversal line is a line that passes through two separate lines on the same plane (coplanar) at 2 distinct points.
Answer:
A, C, and E
Explanation:
A 3-inch by 5-inch photo is enlarged proportionally such that its smaller dimension is now 1 foot 3 inches. How many inches are in the larger dimension?
Answers
Answer:
There are 25 inches in the larger dimension.
Step-by-step explanation:
∵ 1 foot = 12 inches
∵ The small dimension after enlargement is 1 foot and 3 inches
→ Change it to inches only
∴ The small dimension = 1(12) + 3 = 12 + 3
∴ The small dimension = 15 inches after enlarged
∵ The small dimension of the photo before enlarged = 3 inches
→ Divide its length after enlarged by its length before enlarged to
find the scale of the enlargement
∵ 15 ÷ 3 = 5
∴ The scale of enlarged is 5
→ To find the larger dimension after enlarged multiply its length
before enlarged by 5
∵ The larger dimension before enlarged = 5 inches
∴ The larger dimension after enlarged = 5 × 5
∴ The larger dimension after enlarged = 25 inches
∴ There are 25 inches in the larger dimension.
y is inversely proportional to x . When y = 3 , x = 20 Work out x when y = 12
Answers
Answer:
x = 5 when y = 12
Step-by-step explanation:
If y is inversely proportional to x, we can say that x1 : x2 = y2 : y1
The order of y2 and y1 respectively are interchanged as y is inversely proportional to x
Now let us simply substitute our known values, and solve for x2;
x1 : x2 = y2 : y1
20 : x2 = 12 : 3
20/x2 = 12/3
12(x2) = 3(20)
12(x2) = 60
x2 = 60/12 = 5
Marissa decides to use synthetic division to find the quotient of (x3 – 3x2 + 5x – 3) ÷ (x – 1). What value from the divisor should she write in front of the coefficients?
-3
3
-1
1
Answers
Answer:
1
Step-by-step explanation:
Set x - 1 equal to zero
x - 1 = 0
x = 1
Becky needs of $5,000 loan in order to buy a boat which loan option would allow her to pay the least amount of interest
Answers
Answer:
b 5.75%
Step-by-step explanation:
Scott and Nikki each have a full 1.5-gallon container of liquid laundry detergent. The lid on Scott's container can hold 3 fluid ounces of detergent, while the lid on Nikki's container can hold 4 fluid ounces of detergent. How many more lids full of detergent does Scott have than Nikki? 10 lids 16 lids 48 lids 64 lids
Answers
Given:
Scott and Nikki each have a full 1.5-gallon container of liquid laundry detergent.
Lid on Scott's container can hold 3 fluid ounces of detergent.
Lid on Nikki's container can hold 4 fluid ounces of detergent.
To find:
The number of lids full of detergent Scott have more than Nikki.
Solution:
We know that,
1 gallon = 128 fluid ounces
1.5 gallon = 192 fluid ounces
Lid on Scott's container can hold 3 fluid ounces of detergent. So, number of lids full of detergent Scott have is
[tex]\dfrac{192}{3}=64[/tex]
Lid on Nikki's container can hold 4 fluid ounces of detergent. So, number of lids full of detergent Nikki have is
[tex]\dfrac{192}{4}=48[/tex]
Difference between number of lids is
[tex]64-48=16[/tex]
Therefore, Scott have 16 lids more than Nikki. Hence, the correct option is B.
Answer: it is 16
Step-by-step explanation:
