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dusya [7]
3 years ago
12

Marco solves the equation 4sin(3x) + 0.25 ≤ 2sin(3x) − 0.3 by graphing y = 2sin(3x) and y = −0.55. he then locates the intervals

on which 2sin(3x) is less than or equal to −0.55. is marco's solution method valid? explain.
Mathematics
2 answers:
raketka [301]3 years ago
8 0
Help me with this please 
ch4aika [34]3 years ago
6 0

Answer:

yes, Marco's method is correct.

The given inequality can be rewritten using the properties of inequality.

You can subtract 2sin(3x) and 0.25 from both sides of the inequality.

Subtracting preserves the direction of the inequality, so 2sin(3x) would be less than or equal to –0.55.

Step-by-step explanation:


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solmaris [256]

Answer:

It's totally correct with no doubt

3 0
3 years ago
The question is below<br> vvvv
morpeh [17]
60 cm2

Explanation:
Find area of each face/shape

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Area of rectangle on the right:
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Add them all up together:
12 + 16 + 12 + 20= 60

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7 0
3 years ago
Does anyone know how to do this, I’m failing math and I need this to boost my grade. Someone help please
Nataly [62]

Answer:

Step-by-step explanation:

Hey, I'm not sure if I am right, but I hope it can create a spark or something.

8. Find x

10x - 1 = 14x - 37      Combine like terms

     +37        +37

10x + 36 = 14x          Combine like terms

-10x          -10x

    36 = 4x                Divide to isolate x

    <u>36</u> = <u>4x</u>

     4      4

    9 = x        

You can also do this method with the others.

PS: I am still not sure if this is the right method, lol. I just really want to help.

8 0
3 years ago
2.31 devided by - 5.6
lutik1710 [3]

Answer:

0.4125

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Subtract by adding the opposite. <br> 19-23=<br> -48-(80)=<br> -17-(-20)=
leonid [27]
Steps:
1. Do 19 + -23= -4
2. Do -48 + -80= -128
3. Do -17 + 20= 3
4. Your answers are -4, -128, and 3
5 0
4 years ago
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