Someone please help and correct me if im wrong and explain all of it if I am please!!:) 25ptsWhich numbers are solutions to the inequality x < −7, using the replacement set {−15, −10.5, −7.2, −7, 0}?



Choose all answers that are correct. I think its b-c-and d

A.

–7


B.

−7.2


C.

−10.5


D.

−15

Solve. I think its A

8y – 24 > –16

A.

y > –5

B.

y > –1


C.

y > 1


D.

y > 5

The solution to which inequality is shown
>(-10)------(-7)------(10)<(7s the number outlined) I think its A
A.

y + 5 > –2


B.

y + 5 ≥ –2


C.

y + 5 < –2

D.

y + 5 ≤ –2


Solve.










solve I think its D
- t/5 ≥15
A
t ≤ –75
B.

t ≥ –75

C.

t ≤ –3

D.

t ≥ –3

Answers

Answer 1
Answer: *Yes, B, C, and D are correct. -15, -10.5, and -7.5 are solutions to x<-7*.................................................................................................................................................................*8y – 24 > –16.............................................................................................................8y>8 ADD 24 to both sides .......................................................................................y>1 so C. divide both sides by 8.................................................................................It is not A because the opposite of subtracting 24 is adding 24. So you add 24 to both sides to undo the subtraction. -16+24=8 Then you divide both sides by 8, which gives you y>1. I think you probably subtracted 24 from -16 instead of adding it.*...............................................................................................................................................................................*I'm not sure what to make of the third one, is that a number line or...?*.....................................................................................................................................................................*- t/5 ≥15 ........................................................................................................................-t ≥ 75 MULTIPLY both sides by 5....................................................................................t ≤ -75 divide both sides by -1, and flip the sign, because when dividing an inequality by a negative number you must flip the sign..............................................................................So A would be correct. ....................................................................................................I believe if you divided the 15 by 5 and didn't flip the sign you would get D.*.........................Also, sorry, my enter key isn't working right, so it's all scrunched together.

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The figure shows a line graph and two shaded triangles that are similar:Which statement about the slope of the line is true?



It is 1/2 throughout the line

It is 2 throught the line

The slope from point O to point A is 1/2 time the slope of the line from point A to point B

The slope from point O to pint A is two times the slope of the line from point A to point B

Answers

Let's find the slope!

Point A is (4,2)
Point B is (6,3)

\sf{Slope =  (y_2-y_1)/(x_2-x_1) }\n\n=(2-3)/(4-6) =(-1)/(-2)=\boxed{\bf{(1)/(2)}}

The slope is 1/2 throughout the line.

All three points are on the same line so they will all have the same slope.

Your answer is A. It is 1/2 throughout the line.
Point O, Point A, and Point B are all on the same line.

That means that if you find the slope from point O to point A, or point A to point B, or point O to point B, they will all have the same slope.

That eliminates answer choices C and D.

Point A (4,2)
Point B (6,3)

Slope = (y_2-y_1)/(x_2-x_1) = (3-2)/(6-4) =(1)/(2)

Your final answer is AIt is 1/2 throughout the line

Suppose that poaching reduces the population of an endangered animal by 8​% per year. Further suppose that when the population of this animal falls below 70​, its extinction is inevitable​ (owing to the lack of reproductive options without severe​ in-breeding). If the current population of the animal is 1400​, when will it face​ extinction?

Answers

Answer:  36 years

Step-by-step explanation:

Here, the current population of the animal is 1400​,

And, the  population of an endangered animal by 8​% per year.

Also, Further suppose that when the population of this animal falls below 70​, its extinction is inevitable​.

Let after x years the population of animal falls below 70,

Therefore, 1400(1-(8)/(100) )^x < 70

((92)/(100))^x < (70)/(1400)

((92)/(100))^x < (1)/(20)

x log(.92) < log(0.5)

- 0.03621217265 x < -1.30102999566

x>35.9279739462

Thus, after 36 years( Approx) the population of the animal will be fall towards 70.

Final answer:

The Question involves calculating the time it will take for an endangered animal's population to fall to a level that ensures extinction using the concept of Mathematical Exponential decay. Set up the exponential decay formula, substitute the given values, and solve for time.

Explanation:

The situation described in the question is an example of exponential decay, a concept in mathematics where a quantity decreases at a rate proportional to its current value. In this case, the animal's species population is decreasing by 8​% per year.

To find the time it takes until the endangered animal's population falls below 70 and faces extinction, we need to set up the decay formula:

Where:

P0 is the initial population (1400 in this instance),

r is the rate of decrease (0.08 as 8% in this instance),

P is the predicted population (70 in this instance), and

t is the time in years that we're trying to solve for.

Solving this equation for t, we get:

t = log(P/P0) / log(1 - r)

Substitute the variables with our values, then compute to find the approximate time when the animal's population is expected to fall below 70.

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P = P0 * (1 - r)^t

What is 8.525 rounded to the nearest tenth

Answers

the answer would be 9 because you have to see the number after the decimal point is bigger than 5 and if its 5 you add one to the number before the decimal
8.525 rounded to the nearest tenth is 8.500

Rope is 5 meters long. It is cut into 8 equal parts. How long are each piece?

Answers

Answer:

0.625m  PLEASE GIVE BRAINLIEST

Step-by-step explanation:

5 ÷ 8 = 0.625

So.... each piece is 0.625m long.

.625



5 divided by 8 is .625

The median of the data set is 81 what number is missing in data set 82, 87, 77, 70, 80, 88

Answers

The missing dataset is 81 at the 4th position.

We have the following data set -

82, 87, 77, 70, 80, 88

whose Median is -  81

We have to find out the missing data in this dataset.

What is the formula to find the Median of a set of odd number of elements (say N) ?

If a set consist of odd number of elements, then the median of that set of numbers is the is the element at the position ((N+1)/(2)) ^(th).

Let the missing element be x. Now, the data set becomes -

82, 87, 77, 70, 80, 88, x

To total number of elements in the dataset = 7, which is a odd number.

The element at the ((N+1)/(2)) ^(th) position for odd number of elements equals to Median which is equal to 81.

Hence, the missing dataset is 81 at the position -    ((7+1)/(2)) ^(th) = (8)/(2) = 4th position.

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the number that missing is clearly 81

A lawn sprinkler spins in a circle. The sprinkler covers a radius of 4 feet. Which choice is the closest to the area of lawn that the sprinkler can cover? 13 25 50 or 200..

Answers

The required area that the sprinkler will cover is 50 square feet. Option C is correct.

As mentioned in the question, a lawn sprinkler spins in a circle. The sprinkler covers a radius of 4 feet.

What is surface area?

The surface area of any shape is the area of the shape that is faced or the Surface area is the amount of area covering the exterior of a 3D shape.

Here,
Area of the sprinkler,
=  area of the circle
= πr²
= 3.14 × 4²
= 50.24
≈50
                               

Thus, the required area that the sprinkler will cover is 50 square feet. Option C is correct.

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When you are trying to cover something,it would be AREA not Circumference since Circumference is the outside of a circle.Area is inside of a circle,so the formula for area is:pix4² which will equal,16pi or 50.26548246 so the closest area of lawn that the sprinkler can cover is 50.