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3 years ago

What is the value of x? sin(x+22)°=cos(2x−7)° Solve for 30 points!

Mathematics

2 answers:

Marat540 [252]3 years ago

6 0

So you equal it to 90 and then minus and add the simulators to get x=25

Licemer1 [7]3 years ago

3 0

I've seen this monster before on Brainly. I can't imagine it being solved any way but by graphing it. I'm sure you see the complexity of it with double angle formulas and and then a break down of Cos2x and Sin2x on the right. I'm going to go to desmos and see what it will do. Maybe I can find a way to at least get an answer. And here it is. Blue is the cos function Black is the sign. The sin and cos functions are plotting in degrees, but I don't seem to be able get the x axis in pure degrees. I'm wondering if this is a good enough answer. The other student had much much simpler questions to answer, so I think graphing it is a legitimate result.

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Nineteen more than a number is less than 42

Lelechka [254]

We are trying to find the number that when added to 19, gives us less than 42. We can set up this simple inequality:

19 + x < 42

Now, subtract 19 from both sides:

x < 23

Our number can be anything less than 23.

4 0

3 years ago

Read 2 more answers

The tables below show two functions. For each set of data:

slamgirl [31]

The first table, representing f(x), is linear. The data have a constant rate of change or slope:
(between the first two points): m = (y₂ - y₁)/(x₂ - x₁) = (22-18)/(-1--2) = 4/(-1+2) = 4/1 = 4. The rate of change between any two points is the same:
(between the last two points): m = (34-30)/(2-1) = 4/1 = 4.

The second table, representing g(x), is exponential. The data points are multiplied by the same constant between successive points. 2*2 = 4; 4*2= 8; 8*2 = 16, etc.

4 0

3 years ago

Slove by using elimination 3x+7y=27 -3x+y=21

tankabanditka [31]

Answer:

x = -5

y = 6

Step-by-step explanation:

3x + 7y = 27 --------------(I)

-3x + y = 21 -----------(II)

Add equation (I) & (II) and so x will be eliminated and we can find the value of y.

(I) 3x + 7y = 27

(II) -3x + y = 21 {add}

8y = 48

y = 48/8

y = 6

Plugin y = 6 in equation (I)

3x +7*6 = 27

3x + 42 = 27

3x = 27 - 42

3x = -15

x = -15/3

x = -5

8 0

3 years ago

25. En cada par de triangulos, las marcas iguales indican elementos congruentes. ¿Que par de triangulos es congruentre segun el

Rama09 [41]

Answer:

i cant read spanish. sorry

Step-by-step explanation:

5 0

3 years ago

The rabbit population in a certain area is 200% of last year's population.There are 1,000 rabbits this year.how many were there

alexandr1967 [171]

the answer is 200%x=1000 which is =500 when you divide 1000 by 2. So 500 rabbits last year

8 0

3 years ago