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3 years ago

What 2 numbers multiply to -216 and add up to 6

Mathematics

2 answers:

Lena [83]3 years ago

7 0

-12 and 18

hope this helps :)

disa [49]3 years ago

4 0

-12 and 18 add up to six and multiply to -216

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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

3 years ago

Simplify this please

aliina [53]

Answer:

2a +5

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Describe a strategy to visualize and calculate=20% off<br> 40.

Mariana [72]

Answer:

Step-by-step explanation:

First you're going to change 20% to a decimal which would be 0.20

Next, multiply .20 by 40

You should get 8

Subtract 8 from 40

You're answer is 32

5 0

3 years ago

You want to order a pizza that costs $12.99 with no toppings. Each topping you choose costs $0.75. Which of these equations best

Papessa [141]

Answer:

the answer would be number 2

Step-by-step explanation:

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3 years ago

AGD and [ ? ] are alternate exterior angles

lawyer [7]

Answer: EHB

or you could use angle BHE

or angle H, but I would try to use EHB

4 0

3 years ago