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Anton [14]
2 years ago
7

PLEASE HELP PLEASE SOLVE ALL!!!

Mathematics
1 answer:
VARVARA [1.3K]2 years ago
4 0

Answer:

x= -6 | I only have an answer for #7 but you should use a website called Symbolab :)

Step-by-step explanation:

x+16+x+12+2x+15=19

<em>group like terms: </em>

4x+43=19

<em>subtract 43 from both sides:</em>

4x+43=19

   -43 -43

<em>simplify</em>:

4x=-24

<em>divided both sides by 4:</em>

x=-6

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Which basic trigonometric identity would you use to verify that tan x cos x =sin x
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Answer:

\huge\boxed{\tan x=\dfrac{\sin x}{\cos x}}

Step-by-step explanation:

\tan x\cos x=\sin x\\\\\tan x=\dfrac{\sin x}{\cos x}\\\\\text{Therefore}\\\\\tan x\cos x=\dfrac{\sin x}{\cos x}\cdot\cos x\qquad\text{cancel}\ \cos x\\\\\tan x\cos x=\sin x\\\\\text{For}\ x\neq\dfrac{\pi}{2}+k\pi},\ k\in\mathbb{Z}

7 0
3 years ago
The cost of a new laptop is $750 which generates a sales tax amount of 37.50. What is the sales tax rate.
viva [34]

Answer:

5 percent.

Step-by-step explanation:

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4 0
3 years ago
I need help with this
LiRa [457]

Answer:

X represents The value of players on the field

Step-by-step explanation:

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7 0
2 years ago
In the sequence 400, 200, 150, 75, 25...... what number comes next
Scorpion4ik [409]

Answer:

The next term in the sequence = -175

Step-by-step explanation:

Here, the given sequence is : 400, 200, 150, 75, 25...

Now here, in the given sequence,

First Term - Second Term = 400 - 200 = 200

Second Term -   Third Term   =  200  - 150  = 50

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Fourth term - Fifth term = 75 - 25 =  50

So, following this pattern,

Fifth Term - Sixth term = 200

Or, 25 - Sixth Term = 200

or, Sixth term  =  25 - 200  = - 175

Hence, the next term in the sequence = -175

4 0
3 years ago
When modeling hourly pay, which part of the equation is used to represent the<br> hourly rate?
lesantik [10]

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y = mx + b

Step-by-step explanation:

The reason is,  x is always the hour, and m is the amount of money you earn in the hours.

3 0
3 years ago
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