All categories

3 years ago

Which could be an equation

Mathematics

2 answers:

ikadub [295]3 years ago

8 0

Answer:

Step-by-step explanation:

I all ready explained in comments.

IRINA_888 [86]3 years ago

4 0

Answer:

i think maybe D

Step-by-step explanation:

Normally a equation has to have an equal sign and all the numbers add up

You might be interested in

Find the value of each expression. show your work. 9^P3 and 10^C4

Komok [63]

⁹P₃=9×8×7=504; ¹⁰C₄=10×9×8×7÷(4×3×2×1)=210.

3 0

3 years ago

Two step linear equations -36=c/-2+(-27)

attashe74 [19]

1044

-36=c/-29

Multiply -29 to both sides.

c=1044

6 0

3 years ago

option 1 drop down are: even-odd identity, quotient identity, Pythagorean identity, double-number identity.option 2 drop down ar

motikmotik

Answer:

The equation is given below as

$\frac{\cos2x}{\cos x}=\cos x-\sin x\tan x$

Step 1:

We will work on the left-hand side, we will have

$\begin{gathered} \cos x-\sin x\tan x \\ \text{recall that,} \\ Quoitent\text{ identity is} \\ \tan x=\frac{\sin x}{\cos x} \end{gathered}$

By substituting the identity above, we will have

$\begin{gathered} \cos x-\sin x\tan x=\cos x-\frac{\sin x.\sin x}{\cos x}=\cos x-\frac{\sin^2x}{\cos x} \\ \end{gathered}$

Here, we will make use of the quotient identity

Step 2:

By writings an expression, we will have

$\begin{gathered} \cos x-\sin x\tan x=\cos x-\frac{\sin x.\sin x}{\cos x} \\ \cos x-\sin x\tan x=\frac{\cos^2x-\sin^2x}{\cos x} \end{gathered}$

Here, we will use the definition of subtraction

$\cos x-\frac{\sin^2x}{\cos x}$

Step 3:

We will apply the double number identity given below

$\begin{gathered} \cos 2\theta=\cos (\theta+\theta)=\cos ^2\theta-\sin ^2\theta \\ \cos 2x=cos(x+x)=\cos ^2x-\sin ^2x \end{gathered}$

By applying this, we will have

$\frac{\cos^2x-\sin^2x}{\cos x}=\frac{\cos2x}{\cos x}$

Here, we will use the double number identity

$\frac{\cos^2x-\sin^2x}{\cos x}$

5 0

1 year ago

Is it c or its not??

Bingel [31]

Answer:

C) 0.9

Step-by-step explanation:

density = mass / volume

density = 82 / 96

density = 0.9 g/mL

6 0

3 years ago

Read 2 more answers

May someone please help me with question 6 and 7?

svetlana [45]

Lowest wind chill temperature on Monday was 1/4(-36) = -9 F

The lakes initial level with respect of normal is -8 inches
New level after decreases = -8 - 1 1/4 - 2 3/8 = -11 5/8 inches.

5 0

3 years ago

Which could be an equation​

Which could be an equation