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Evgesh-ka [11]
3 years ago
7

People use water to​ cook, clean, and drink every day. An estimate of 19.4​% of the water used each day is for drinking. If a fa

mily uses 67.9 gallons of water a day for drinking​, how many gallons do they use every​ day?
Mathematics
1 answer:
Ronch [10]3 years ago
4 0

Answer:

86.7 gallons

Step-by-step explanation:

I literally went decimal by decimal to find it. So theres no way it's wrong

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If 5+ 20 -22-3х - 10.2-2x+5, what is the value of х?
Elodia [21]

Answer:

<h2>3</h2>

Step-by-step explanation:

5+20\cdot2^{2-3x}=10\cdot2^{-2x}+5\qquad\text{subtract 5 from both sides}\\\\20\cdot2^{2-3x}=10\cdot2^{-2x}\qquad\text{divide both sides by 10}\\\\2\cdot2^{2-3x}=2^{-2x}\qquad\text{use}\ a^n\cdot a^m=a^{n+m}\\\\2^{1+2-3x}=2^{-2x}\\\\2^{3-3x}=2^{-2x}\iff3-3x=-2x\qquad\text{subteact 3 from both sides}\\\\-3x=-2x-3\qquad\tex\qquad\text{add}\ 2x\ \text{to both sides}\\\\-x=-3\qquad\text{change the signs}\\\\x=3

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3 years ago
I Really Need Some Help With These I'm Really Struggling Can You Help Me Please
jeka57 [31]

Im not rlly sure about this it seems confusing

4 0
3 years ago
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Evaluate ab + c for a = 2, b = 3, and c = 4.<br> 9<br> 10<br> 27
valentinak56 [21]

Answer:

10

Step-by-step explanation:

2*3=6

6+c

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7 0
3 years ago
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Find the mean absolute deviation (mad) for this data. (remember to show your 4 steps) 88, 72, 85, 76​
Stolb23 [73]

Answer:

Step-by-step explanation:

mean=(88+72+85+76)/4=321/4=80.25

x      |x-mean|

88     7.75  (88-80.25)

72     8.25  (80.25-72)

85     4.75   (85-80.25)

76      4.25  (80.25-76)

         --------

       25.00

      ______

mean absolute deviation=25/4=6.25

     

7 0
3 years ago
Can someone plzz help me
never [62]

For this case we have that by definition of trigonometric relations of a rectangular triangle that, the sine of an angle is given by the opposite leg to the angle on the hypotenuse of the triangle.

That is to say:

Sin (30) = \frac {IR} {14}

We clear the length of the leg:

IR = 14 * sin (30)\\IR = 14 * \frac {1} {2}\\IR = 7 \ in

Answer:

IR = 7 \ in

6 0
3 years ago
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