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4 years ago

Struggling with this

Mathematics

1 answer:

Schach [20]4 years ago

7 0

The answer to your question is B. I am sorry if it is wrong

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Please help

lora16 [44]

Answer:

1) 25

2) (5+4)×2+6-(2×2)-1

Step-by-step explanation:

1) do exponents: 6×7-9×9+64,

do multiplication: 42-81+64,

do add & subtract: 25

2) (5+4)×2+6-(2×2)-1

(9)×2+6-(4)-1

18+6-4-1

=19

4 0

4 years ago

Curt filled 120 cups with juice for the party. He placed 15 cups on each tray. He accidentally spilled 3 trays of juice. How man

Romashka [77]

30 treys left I think

3 0

3 years ago

A cylinder has a radius of 8 cm and a height of 14 cm.

Wewaii [24]

Radius, r = 8 cm
Height, h = 14 cm

Volume = πr²h

= π × (8)² × 14
= 896π cm³

7 0

4 years ago

A coin is biased such that it results in 2 heads in every 3 coin flips, on average. The sequence is most probable for the biased

Tomtit [17]

33% Probability of displaying tails.

5 0

3 years ago

Read 2 more answers

At the beginning of a population study, the population of a large city was 1.65 million people. Three years later, the populatio

Maksim231197 [3]

Answer:

C. 1.8027

Step-by-step explanation:

The exponential population growth model is given by:

$P(t) = P_{0}e^{rt}$

In which P(t) is the population after t years, $P_{0}$ is the initial population and r is the growth rate.

At the beginning of a population study, the population of a large city was 1.65 million people. Three years later, the population was 1.74 million people.

This means that $P_{0} = 1.65, P(3) = 1.74$

Applying this to the equation, we find r. So

$P(t) = P_{0}e^{rt}$

$1.74 = 1.65e^{3r}$

$e^{3r} = \frac{1.74}{1.65}$

$e^{3r} = 1.0545$

Applying ln to both sides

$\ln{e^{3r}} = \ln{1.0545}$

$3r = \ln{1.0545}$

$r = \frac{\ln{1.0545}}{3}$

$r = 0.0177$

$P(t) = 1.65e^{0.0177t}$

What would be the population of the city 5 years after the start of the population study?

This is P(5).

$P(t) = 1.65e^{0.0177t}$

$P(5) = 1.65e^{0.0177*5}$

$P(5) = 1.8027$

So the correct answer is:

C. 1.8027

6 0

4 years ago