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3 years ago

Need help please don't know this

Mathematics

2 answers:

earnstyle [38]3 years ago

5 0

28x + 16. have a nice day.

vesna_86 [32]3 years ago

3 0

Perimeter = 2w + 2l
2(8x+2) + 2(6x + 6)
Use distributive property
16x + 4 + 12x + 12
Combine like terms
28x + 16

Solution: 28x + 16

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levacccp [35]

To solve this problem you can do a proportion
$\frac{x}{215} = \frac{35\%}{100\%}$
to find 'x', we have to cross multiply the numbers.
$215 \times 35$
and
$100 \times x$
this will get you
$7525 = 100x$
to get 'x', we have to divide by 100 on each side
$\frac{7525}{100} = \frac{100x}{100}$

your answer will be
$75.25 = x$
so, Chris must raise 75.25 dollars by himself

3 0

3 years ago

The birth rate of a population is b(t) = 2300e0.024t people per year and the death rate is d(t)= 1450e0.019t people per year, fi

Shalnov [3]

Answer:

Area = 10025.66 square units

Step-by-step explanation:

We are given the following in the question:

The birth rate of a population:

$b(t) = 2300e^{0.024t}$

The death rate of a population:

$d(t)= 1450e^{0.019t}$

The area between the curve for 0 ≤ t ≤ 10, is given by:

$\displaystyle\int_0^{10}b(t) - d(t)~ dt\\\\\displaystyle\int_0^{10} 2300e^{0.024t}-1450e^{0.019t}~dt\\\\= \Bigg[\frac{2300e^{0.024t}}{0.024}\Bigg]_0^{10}-\Bigg[\frac{1450e^{0.019t}}{0.019}\Bigg]_0^{10}\\\\= \Bigg[\frac{2300e^{0.24}}{0.024}-\frac{1450e^{0.19}}{0.019}\Bigg]-\Bigg[\frac{2300}{0.024}-\frac{1450}{0.019}\Bigg]\\\\= 29543.2058565 - 19517.5438596 \approx 10025.6$

4 0

3 years ago

Which of the following sets contains only rational numbers?

ICE Princess25 [194]

Answer: rational numbers

D. {3.2, 81, 45.41, √81}

3.2 = 32/10

45.41 = 4541/100

√81 = 9 = 9/1

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3 years ago

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brilliants [131]

Answer:

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3 years ago

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Savatey [412]

Where is the function?

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3 years ago