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3 years ago

How do I find the rational number halfway between -24.07,-24.05

Mathematics

1 answer:

Anna [14]3 years ago

3 0

Well -24.07 and -24.05 there are numbers in between thoses like -24.06 or -24.04

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2. y = k2 - 13k +42

bekas [8.4K]

For this case we must solve the following quadratic equation:

$y = k ^ 2-13k + 42$

With $y = 0$ we have:

$k ^ 2-13k + 42 = 0$

The roots will be given by:

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

Where:

$a = 1\\b = -13\\c = 42$

Substituting:

$k = \frac {- (- 13) \pm \sqrt {(- 13) ^ 2-4 (1) (42)}} {2 (1)}\\k = \frac {13 \pm \sqrt {169-168}} {2}\\k = \frac {13 \pm \sqrt {1}} {2}\\k = \frac {13 \pm1} {2}$

Thus, we have two roots:

$k_ {1} = \frac {13 + 1} {2} = \frac {14} {2} = 7\\k_ {2} = \frac {13-1} {2} = \frac {12} {2} = 6$

Answer:

$k_ {1} = 7\\k_ {2} = 6$

6 0

3 years ago

When a breeding group of animals is introduced into a restricted area such as a wildlife reserve, the population can be expected

jasenka [17]

Answer:

A. Initially, there were 12 deer.

B. <em>N(10)</em> corresponds to the amount of deer after 10 years since the herd was introducted on the reserve.

C. After 15 years, there will be 410 deer.

D. The deer population incresed by 30 specimens.

Step-by-step explanation:

$N=\frac{12.36}{0.03+0.55^t}$

The amount of deer that were initally in the reserve corresponds to the value of N when t=0

$N=\frac{12.36}{0.33+0.55^0}$

$N=\frac{12.36}{0.03+1} =\frac{12.36}{1.03} = 12$

A. Initially, there were 12 deer.

B. $N(10)=\frac{12.36}{0.03 + 0.55^t} =\frac{12.36}{0.03 + 0.0025}=\frac{12.36}{y}=380$

B. <em>N(10)</em> corresponds to the amount of deer after 10 years since the herd was introducted on the reserve.

C. $N(15)=\frac{12.36}{0.03+0.55^15}=\frac{12.36}{0.03 + 0.00013}=\frac{12.36}{0.03013}= 410$

C. After 15 years, there will be 410 deer.

D. The variation on the amount of deer from the 10th year to the 15th year is given by the next expression:

ΔN=N(15)-N(10)

ΔN=410 deer - 380 deer

ΔN= 30 deer.

D. The deer population incresed by 30 specimens.

8 0

3 years ago

Find the total time.

Ad libitum [116K]

Answer:

A and D

Step-by-step explanation:

53 + 37 + 44 with the time standard being minutes

Find total time

___________________________________________

We have units of time and need to add them together, let's do as such.

53 + 37 + 44

134 minutes.

Let's try simplifying it into minutes to find how much we have :

134/60

2 hours and 14 minutes

Therefore A and D are correct.

3 0

3 years ago

Read 2 more answers

Find four rational numbers between-5 and -4

algol [13]

Answer:

-41/10, -42/10, -43/10, -45/10

Step-by-step explanation:

multiply with 10 in numerator and denominator in -5/1 and -4/1

-5×10/1×10 , -4×10/1×10

you will get,

-50/10 , -40/10

now u can find the four rational numbers

four rational no's: -41/10, -42/10, -43/10, -45/10

hope u understood:)

3 0

3 years ago

Hi. I need help with this. If anyone could explain how to solve this problem it would be greatly appreciated!

vaieri [72.5K]

Answer: Just simply solve the problem, i'm sorry but i cant see the problem do you think you could just copy the question down?

Step-by-step explanation:

8 0

4 years ago