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3 years ago

I need help with some of these I don't get it?

Mathematics

2 answers:

ira [324]3 years ago

6 0

You need to put the problem so we can help you. If you don't, we can't.

riadik2000 [5.3K]3 years ago

3 0

If you give the problems then i will help you the best i can

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2(x-5)=3(x+7) Show the process, please.

chubhunter [2.5K]

Answer:

-31

Step-by-step explanation:

(2×x) - (2×5) = (3×x) + (3×7)

2x-10 = 3x+21

2x-3x = 21+10

-x = 31

therefore, x = -31

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3 years ago

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What is the standard form of x + 4 -5x -2

nata0808 [166]

-4x-2+4
or -4x+4-2
Without variable they can go in any order.

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3 years ago

Find the degree of the monomial. -20.5

Nadya [2.5K]

Answer:

Step-by-step explanation:

-20.5 is the same as -20.5 $x^{0}$ , since anything to the zero power is equal to 1.

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2 years ago

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In the year 2019, Lee County used approximately 55 million gallons of water. Historical trends show that each year the water dem

Harlamova29_29 [7]

Answer:

Approximately 62 gallons of water will be used by Lee County by the year 2025.

Step-by-step explanation:

The amount, in millions gallons of water, spent by Lee County, in t years after 2019, is given by the following equation:

$P(t) = P(0)(1 + r)^{t}$

In which P(0) is the amount spent on 2019 and r is the increse rate, as a decimal.

In the year 2019, Lee County used approximately 55 million gallons of water.

This means that $P(0) = 55$

Historical trends show that each year the water demand is increasing by a rate of approximately 2.1%.

This means that $r = 0.021$

$P(t) = P(0)(1 + r)^{t}$

$P(t) = 55(1 + 0.021)^{t}$

$P(t) = 55(1.021)^{t}$

Approximately how many million gallons of water will be used by Lee County by the year 2025?

2025 is 2025 - 2019 = 6 years after 2019. So this is P(6).

$P(t) = 55(1.021)^{t}$

$P(6) = 55(1.021)^{6}$

$P(6) = 62.3$

Rounded to the nearest millions

Approximately 62 gallons of water will be used by Lee County by the year 2025.

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3 years ago

What is the rate of change of the function?<br> 5 4<br> 3<br> 2<br> 5 + -3 -2 -1,

Digiron [165]

Answer:

1+1=2

Fighting! You can do this

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3 years ago