3 years ago

Can someone pls help

Mathematics

1 answer:

Len [333]3 years ago

6 0

Answer:

I believe the answer is D

Step-by-step explanation:

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Two cars leave towns 800 kilometers apart at the same time and travel toward each other. One car's rate is 16 kilometers per hou

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Wait what grade is this in also what class is this

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3 years ago

During a musical an orchestra is playing. As the music plays, the volume changes in the beginning of the piece can be modeled by

IrinaK [193]

Answer:

<em>The sound level would be at 80 decibels at 1 or 7 number of measures played</em>

Step-by-step explanation:

<u>Equations with Absolute Values</u>

We have the function s to represent the sound level in decibels:

$s = 10|x - 4|+ 50$

Where x is the number of measures of the music played.

We are required to find the value of x that makes s=80 decibels. We have to find the equation:

$10|x - 4|+ 50 =80$

Subtracting 50:

$10|x - 4| =80-50$

$10|x - 4| =30$

Dividing by 10:

$|x - 4| =30/10=3$

$|x - 4| =3$

For the absolute value be equal to 3, its argument could be positive or negative:

$x-4=3$

$x-4=-3$

This leads us to two solutions:

$x=3+4=7$

x=7

$x-4=-3$

$x=4-3=1$

x=1

The sound level would be at 80 decibels at 1 or 7 number of measures played

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3 years ago

A takeaway sells 10-inch pizzas and 12-inch pizzas.

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Answer:

532.52

Step-by-step explanation:

P 2(10-inch pizza)=407*3.72-358*0.49=1514.04-175.42=1339.62

P2(12-inch pizza)=169*5.26-142*0.04=888.94-5.68=883.26

P=1339.62+883.26=2222.88

2222.88-1690.36=532.52

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3 years ago

Y equals x plus 13 in standard form

Shkiper50 [21]

Answer:

y=×+13

Step-by-step explanation:

standard form is any linear equation in y=mx+b

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Martin is building a sandcastle at the beach. He pours no less than 5 cups of wet sand into each plastic mold.

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Answer:

Question??

Step-by-step explanation:

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4 years ago

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