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1 year ago

Simplify the expression 11+3(−5+4)

Mathematics

1 answer:

Ghella [55]1 year ago

7 0

Answer:

= 11+3(-1)

= -14

The answer is -14.

Step-by-step explanation:

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Scientists have discovered a vaccine for a debilitating disease. This year there were 570,000 reported new cases of the disease

Ket [755]

Answer: There are approximately 853827 new cases in 6 years.

Step-by-step explanation:

Since we have given that

Initial population = 570000

Rate at which population decreases is given by

$\frac{2}{3}$

Now,

First year =570000

Second year is given by

$570000\times (\frac{1}{3})$

Third year is given by

$570000(\frac{1}{3})^2$

so, there is common ratio ,

it becomes geometric progression, as there is exponential decline.

so,

$570000,570000\times \frac{1}{3},570000\times( \frac{1}{3})^2,......,570000\times (\frac{1}{3})^6$

a=570000

common ratio is given by

$r=\frac{a_2}{a_1}=\frac{1}{3}$

number of terms = 6

Sum of terms will be given by

$S_n=\frac{a(1-r^n)}{(1-r)}$

We'll put this value in this formula,

$S_6=\frac{570000(1-(\frac{1}{3})^6}{(1-\frac{1}{3})}\\\\=853827.16$

So, there are approximately 853827 new cases in 6 years.

6 0

2 years ago

Plzzzz guys help :( Which of the following is the mid point of the line segment with endpoints -3 and 2 (a)5/2 (b) 1 (c) -1/2 (d

Monica [59]

Answer:

C -1/2

Step-by-step explanation:

midpoint = sum of end points divide by 2.

here, midpoint = (-3+2)/2

=(-1/2)

4 0

3 years ago

Read 2 more answers

Write the numbers in order from least to greatest 1.3, 1 1/3, 1.34

Norma-Jean [14]

Answer:

1.3, 2 1/3, 1.34 is the order from least to greatest

7 0

3 years ago

Identify the polynomial. a2 + bcd3

olga2289 [7]

This polynomial has 2 terms, hence the prefix 'bi-' in binomial.

7 0

2 years ago

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What is the solution to 40.5x - 2.51 = 0?

Leokris [45]

Answer: C

Step-by-step explanation:

8 0

2 years ago