3 years ago

What is the domain of f(x)=cos(x)

Mathematics

1 answer:

hammer [34]3 years ago

6 0

The domain of f(x) = cos(x) is ( - infinity , infinity) or all real numbers

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Hurryyyyyy!!! which expression is equivalent to 7(1+3)? a.1+21 b.7+21 c 7+3 d.7+4

n200080 [17]

Answer:

b. 7+21

Step-by-step explanation:

If you do 1+3=4 and then 4 times 7 that equals 28. When you do 7+21 that equals 28 too. So b is the answer

4 0

3 years ago

Find the value of x Pls look at the photo to answer

Marat540 [252]

Answer:

Step-by-step explanation:

so 8(2)=16=5x-4

5x=20

x=4

so B

8 0

3 years ago

Its this one lol sorry

Alenkasestr [34]

Answer:

x = 41.7

WYZ = 63.4 degrees

WZY = 33.2 degrees

ZWY = 83.4 degrees

Hope that helps!

3 0

3 years ago

X2 + 4x - 21 = 0 quadratic formula

Elena-2011 [213]

Answer:

Step-by-step explanation:

x2 +4x-21=0. solve for x

$x = \frac{7}{2}$

$x = 3 \frac{1}{2} \ x = 3.5$

6 0

3 years ago

The cube shaped box is 6 inches wide and the rectangular box is 10 inches long 4 inches wide and 4 inches high. How much greater

nasty-shy [4]

Answer:

Formula of the volume for a cube= s^3 (side, length, width, or edge is acceptable for s)

Formula of the volume for a rectangular prism= lwh (length*width*height)

= 50 cubic in. more

Step-by-step explanation:

cube: 6^3

6x6x6

36x6

216

rectangular prism: 10x4x4

10x16

160

cube - rectangular prism= Difference between cube and rectangular prism

216 - 160 = 50

*REMEMBER that when dealing with volume the units are cubic (whatever), in this case, its cubic inches(in^3).

3 0

3 years ago