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3 years ago

HEEELLLLLLLLLLLP MEEEEEEEEE!!!!!!

Mathematics

1 answer:

WINSTONCH [101]3 years ago

7 0

Answer:

A., C., D., E.

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2v^2-12 =-12v Would really appreciate it loves❤️

Black_prince [1.1K]

For this case we have the following equation:

$2v ^ 2-12 = -12v$

Rewriting we have:

$2v ^ 2 + 12v-12 = 0$

Dividing by 2 to both sides of the equation:

$v ^ 2 + 6v-6 = 0$

We apply the quadratic formula:

$x = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2a}$

We have to:

$a = 1\\b = 6\\c = -6$

Substituting:

$x = \frac {-6 \pm \sqrt {6 ^ 2-4 (1) (- 6)}} {2 (1)}\\x = \frac {-6 \pm \sqrt {36 + 24}} {2}\\x = \frac {-6 \pm \sqrt {60}} {2}\\x = \frac {-6 \pm \sqrt {4 * 15}} {2}\\x = \frac {-6 \pm2 \sqrt {15}} {2}$

Thus, we have two roots:

$x_ {1} = - 3+ \sqrt {15}\\x_ {2} = - 3- \sqrt {15}$

ANswer:

$x_ {1} = - 3+ \sqrt {15}\\x_ {2} = - 3- \sqrt {15}$

7 0

3 years ago

Choose the best description for the real number square root of 35.

Liono4ka [1.6K]

$\sqrt{35}$

This cannot be simplified any further.

Have a good one!

3 0

2 years ago

The equation a = 1300(1.02)7 is being used to calculate the amount of money in a savings account. what does 1.02 represent in th

yaroslaw [1]

For this case we have an equation of the form:
y = A * (b) ^ t
Where,
A: initial amount
b: growth rate
t: time
The given equation is:
a = 1300 (1.02) ^ 7
Where,
b = 1.02
It represents a growth of 2% on the initial amount.
Answer:
1.02 represented in this equation a growth of 2% on the initial amount.

7 0

3 years ago

What is the area of a triangle that has a height of 10 feet and base length of 6 feet

disa [49]

Answer:

A = 30

Step-by-step explanation:

The area of a triangle is $\frac{1}{2} bh$

Plug in the values given:

A = 1/2 (10) (6) = 1/2 (60) = 30

4 0

3 years ago

A certain forest covers an area of 2100 km². Suppose that each year this area decreases by 3.5%. What will the area be after 5 y

Blizzard [7]

Answer:

$\large\boxed{\sf \ \ \ 1757 \ km^2 \ \ \ }$

Step-by-step explanation:

Hello,

I would recommend that you checked the answers I have already provided as this is the same method for all these questions, and maybe try to solve this one before you check the solution.

At the beginning the area is 2100

After one year the area will be

2100*(1-3.5%)=2100*0.965

After n years the area will be

$2100\cdot0.965^n$

So after 5 years the area will be

$2100\cdot0.965^5=1757.34027...$

So rounded to the nearest square kilometer is 1757

Hope this helps

8 0

3 years ago

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