Mathematics Middle School

if there are 400 billion birds in the world and 5 billion die each year and 395 million are left but 10 billion birds are made each year how many birds are there really

Answers

Answer 1

You already said the answer. There are 400 billion birds in the world. ("if there are 400 billion birds in the world...")

Also, if you wanted an approximate calculation of everything, you would have to tell us how many years there are. Is this a trick question?

Related Questions

Please help me answer please and please actually Answer

Answers

Answer:

3/5th

Step-by-step explanation:

look at the clock and you see half the clock so when you look at it you would know it is 3/5 because it has one arm and it is in the middle straight up so right on there is 3 and 5 where the dot is.

3/5
First - Count all the even numbers put them on the top of the fraction
Next - Count all of the numbers in the data set and put them in the bottom of the fraction
Finally - simply!
Hope this helps!

What is the answer to 10x+12=8 ?

Answers

Answer:

x=-.4

Step-by-step explanation:

Answer:

x= -0.4

Step-by-step explanation:

You subtract 12 from 8 and get -4. Then you divide by 10 to get -0.4. Therefore, x= -0.4

I need all three answer for an assignment

Answers

This is false... you can get an easy example: (-2) + (10) = 10 - 2 = 8
The answer is A, it is below sea lever by 12, then raised to sea level because it is 12 m higher

Giving brainlist help find the total. 2+2x10+200+36x24 helppppppp im so confused!

Answers

Answer:

1086

Step-by-step explanation:

2+20+20+36+24=102 I multiply first then added the rest and got 102

Write an equation to represent the following statement.
The sum of j and 47 is 55.
[ ]
Then Solve for j.
[ ]

Answers

Answer: j+47=55

Subtract 47 from both sides.

j= 8

Step-by-step explanation:

The equation would be j+47=55

You have to do 55-47=j

Your answer would be 8

Aleena, a student, is going to complete a final exam next week. The exam has 30 questions. The teacher's recommendation is that students take between 2 and 2.5 minutes per question. If a student follows the teacher's recommendation, about how much time will it take Aleena to complete the exam?

A. Between 30 and 45 minutes

B. Between 20-30 minutes

C. Between 10-15 minutes

D. Between 60 and 75 minutes

Answers

Would have to go with B.
I think the correct answer is B

What is the coefficient in the following expression: 5 + 3x + (-3)

Answers

Answer: A coefficient is a number multiply its by a variable( example: a, x, y) so the coefficient is 3.

40% of Kim's cookies are chocolate chip flavored. If Kim has 2 chocolate chip cookies, how many cookies does she have total?
A. 5
B. 80
C. 0.8
D. 105

Answers

Answer:

(A) 5 is the answer

Step-by-step explanation:

if 40%=2 then 20%=1 so 20%=1 x 5=100% that means 100%=5

                                                      hope it helps

A -40%/2 = 20% each

how to calculate the measure of center with an example question
Calculate the measure of center for the data on the dot plot, rounding your answer to the nearest tenth place.
Box plot is below

Answers

Answer:

3

Step-by-step explanation:

-3(8x); x = 1/4 and -3(8x) + 6(4x); x = 2
In standard form

Answers

23(4)51 this is the answer

Please just- help please =v=

Answers

Answer:

4

Step-by-step explanation:

a is negative, b is positive, c is negative and d is the opposite of a

need help
will give brainly

Answers

The answer is A.Good luck!:)

yall know the drill.

Answers

Answer:

The answer is 29/8

Hoped this helped you!

I don’t really know but I hope this helps you XD please give Me brainiest if I’m right if I’m wrong put the right answer for others. Thank you!

A $400 suit is marked down to $260. Find the percent of markdown.
A.0.35%
B.35%
C.65%
D.154%

Answers

The answer is B. -$140

Answer:

35%

Step-by-step explanation:

i dont know which letter it is bc a and b are the same answer and technically they are both right.

We can automatically assume that the answer isn't c or d because the suit didn't get marked down more than halfway.

We can't figure which letter is the correct one tho because answers a and b are the same.

select all the simplified expression
​

Answers

Answer:

1 / 3^5

1/ 243

Step-by-step explanation:

3^4 ÷ 3^9

We know that a^b ÷ a^c = a^ ( b-c)

3 ^ ( 4-9)

3^ -5

We can rewrite this as a^-b = 1/ a^b

1 / 3^5

We know that 3^5 = 243

1/ 243

Answer:

The answer to the question provided is [tex] \frac{1}{243} [/tex] and [tex] \frac{1}{ {3}^{5} } [/tex].

Jacob took out a loan for $5,400 at a simple interest rate of 3.5% for 6 months. How much interest did he owe?

A) $94.50
B) $113.40
C) $1134.00
D) $9450.00

Answers

Answer:

c

Step-by-step explanation:

I don't trust myself so I am sorry if it is wrong

It’s C you would convert 3.5% to 0.35 and multiply it by 6 to get 21% then you convert it to .21 and multiply that by the total loan to get $1134.00

the sixth grade at midland junior high school has 38 males in a class of 90 students. What is the ratio of male students to female students?
1. 19:26
2. 26:19
3. 26:45
4. 45:26

Answers

Answer:

1. 19:26

Step-by-step explanation:

To solve you will first need to subtract like so;

90 - 38 = 52

so there are 52 females the ratio of male to females would be 38:52 then you would have to reduce the ratio.

If you divide both sides by two you get 19:26

Hope this helps and have a great day!

the answer is 19:26

Find the slope
Can someone please explain how to do this I don't really understand please and thank you

Answers

I have no idea 149 I think lol
Alright I haven’t done this in a while but I’ll try.

When doing slope you always want to do rise over run. Slope= y2-y1/ x2- x1.

So what you want to do is find your two pretty points on the graph! Meaning where the point is exactly on those little corners!

So if we start you can see you rise 2 spaces up before you’re vertical to your next pretty point. Next you want to RUN to the next one which would give you 4!

This being said you’re slope is 2/4 but you want to make sure you simplify if you can! In this case you can do it’ll give 1/2!

Again I haven’t done this in a while and I apologize if this is wrong! Hope this helps!

whats the answer to 4x(-5x^4y)

Answers

Answer:

The answer is −20x^4y+1

Step-by-step explanation:

The answer of 4x(-5x^4y) is -20x^5y

Plz answer both questions if works will give brainliest BTW start from the 1st one at the top

Answer 1:

Answer 2:

Answers

Answer 1: 8

Answer 2: C

Answer for question 1: Last table.

Step-by-step explanation: The answer is not the top 2 because the y-intercept is plus 5 not minus 5. Let us now look at the bottom two and calculate if the slope is equal to -2. (Second to last table) 13-9/4-2= 4/2=2. This does not equal -2. Let us look at the last one. 13-17/4-2= -4/2= -2. The last one is the correct answer because it has the y-intercept of 5 and the slope of -2.

Answer for question 2: 4

Explanation: The rate of change formula is y1-y2/x1-x2. Let us take 16-8/1-1/2. This is equal to 4 because 16-8 is 8 and 1-1/2 is 1/2. 8 divided by 1/2 is 4.

A cell phone company recently noticed a 26% sales decrease in the month of July compared to June. Let n represent June’s sales. If y represents July’s sales, which equation can be used to determine the sales in July?



a) y = n – 0.26n


b) y = n + 0.26n


c) y = n – 0.26


d) n = y – 0.26y

Answers

Answer is a) n - 0.26n

50% of a number is x . What is 100% of the number? Assume x>0 .

Answers

i guess 2x ,as 50+50=100

Answer:

2x

Step-by-step explanation:

A salesman at T-Mobile earns $12 for each phone he sells as well as an hourly salary of $18. Write and solve an inequality to determine the number of phones he must sell to earn $1000 in a 45-hour week.

Answers

He needs to sell 33 , your welcome :)
Answer is 16
P= (1000-18 times 45) divided by 12
So 1000-810 = 190 divided by 12 equals 15.8
But you can’t sell 15.8 phones so he has to sell 16, I’m bot very good at fighting inequalities so the inequality that I wrote might not be right

The students in Mr Taylor's class are part of different clubs.
8 boys in a reading club
4 girls in a reading club
2 boys in drama club
12 girls in drama club

Answers

Answer:

The answer is D

Step-by-step explanation:

1 girl in reading club for 3 girls in a drama club

4 x 3 = 12

Have a good day and be safe.

i do believe the answer is D, sorry if that’s incorrect

A ladder 8m long rests against a house. If the house is 6m high and the bottom of the ladder is 2m from the house, how much of the ladder extends beyond the roof?

Answers

Answer:

15

Step-by-step explanation:

you add all of them up and you get your answer

8m=26 foot long
The house is 6m= 20 foot long
Bottom of the ladder is 2m from the house=7 foot

So total for the ladder is approx 33 foot which is approx 13 foot extends the roof

Solve.



−0.55p − 7 = 0.45p



The solution is p =
HELPP PLZ

Answers

Answer:

p=-7

Step-by-step explanation:

-0.55p-7=0.45p

-7=0.45p+0.55p

-7=p

During the Cold War, what two types of governments were dominant in Western Europe and Eastern Europe? Define what both types of government mean.

Answers

Answer:

Western Europe promoted capitalist democracies. Eastern Europe came under the Communist influence of the Soviet Uniion.

Step-by-step explanation:

Line / has a slope of 3 and a y- intercept of 4 which of the equations represents line/

Answers

D is your answer hope this helps :)
C should be correct for this equation

Find the missing exponent.

1169=(113)?

Answers

Answer:

does it have options?  if the question has these options A.) 103  B.) 93  C.) 113 D.)  if they are it would be B :)

1169=113x10 (10) 8: exponent

Lin’s class has also adopted some sections of highway to keep clean. If 1 1/2 sections are 3/4 mile long, how long is each section?

Answers

Half a mile I’m pretty sure!!!

In each section 2/3 miles is covered.

What is Unitary Method?

The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units.

For example, Let's say Ram spends 36 Rs. for a dozen (12) bananas.

12 bananas will set you back 36 Rs. 1 banana costs 36 x 12 = 3 Rupees.

As a result, one banana costs three rupees. Let's say we need to calculate the price of 15 bananas.

This may be done as follows: 15 bananas cost 3 rupees each; 15 units cost 45 rupees.

Given:

If 1 1/2 (3/ 2) sections are 3/4 mile long.

So, in one section = 3/4 ÷ ( 3/2)

                               = 3/4 x 2/3

                               = 2/3

Hence, In each section 2/3 miles is covered.

Learn more about unitary Method here:

https://brainly.com/question/22056199

#SPJ2

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