3 years ago

What is the correct range for this given function

Mathematics

2 answers:

egoroff_w [7]3 years ago

7 0

Answer:

B.) [ -4 , INFINITY)

Step-by-step explanation:

X cannot make the equation negative (square root of a negative is out of range)

X must be greater than or equal to -4

-4 < x < INFINITY

[ -4 , INFINITY)

soldi70 [24.7K]3 years ago

5 0

Answer:

Step-by-step explanation:

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The variables y and x have a proportional relationship, and y = 15 when x = 3.

atroni [7]

Answer:

I think 2

Step-by-step explanation:

y=15 and x=3 5x3=15 and 2x2=4

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3 years ago

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Express using exponents and simplify any numerical coefficients.

s2008m [1.1K]

Answer:

2×2×y¹+¹+¹+¹

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Eli attended a concert. The decibel level of the music averaged 110 decibels but varied by 28 decibels from the average. Enter a

musickatia [10]

Answer:

The decibel range is $82\leq d\leq 138$

Step-by-step explanation:

Let

d -----> the decibel level of the music

we know that

The absolute value of the difference of the decibel level of the music and its average, must be less than or equal to 28 decibels

The absolute value that represent this problem is

$\left|d-110\right|\le28$

Solve the absolute value

First solution (positive)

$+(d-110)\le28$

Adds 110 both sides

$d\le28+110$

$d\le138$

Second solution (negative)

$-(d-110)\le28$

Multiply by -1 both sides

$(d-110)\ge-28$

Adds 110 both sides

$d\ge-28+110$

$d\ge82$

therefore

The decibel range is

$82\leq d\leq 138$

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4 years ago

Nicole did a aerobics class and yoga class for total of one hour and 10 minutes the yoga class was30 minutes longer than the aer

masha68 [24]

1 hour and 10 minutes = 70 total minutes
The aerobics class is 20 minutes and then since the yoga class is 30 minutes longer it will then be 50 minutes.
20 minutes aerobic+50 minutes yoga= 70 total minutes

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4 years ago

X/5 = 2 1/2 Fraction Have to find x

nadya68 [22]

Answer:

x=12.5

Step-by-step explanation:

x=2 1/2 times 5

x=12.5

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3 years ago