Please help :(... when I posted this with 50 points someone gave me incorrect answers..
Answers
Answer:
22)43300000, 23)~7, 24)~20
Step-by-step explanation:
22)6.48*10^(7)-(2.15*10^(7))=4.33*10^7 (or 43300000)
23)2.95*10^6=2950000, 2.15*10^7=21500000, 21500000/2950000=~7
24)1.3*10^9=130000000, 1300000000/64800000=~20
Answer:
Step-by-step explanation:
22. You can write these exponents out if it makes it easier to understand, then convert back into exponential form.
6.48 x 10⁷ = 64800000 France
2.15 x 10⁷ = 21500000 Australia
Subtracting Australia from France = 43300000
Converting back to exponential would be 4.33 x 10⁷
But if you notice both number have the exponent of 10⁷. Since these are both the same, you can just subtract the whole number for Australia from the number for France 6.48 - 2.15 = 4.33
then just put the exponent on the end. 4.33 x 10⁷
23. Again it might be easier to convert to standard numbers first.
Area of Australia = 2.95 x 10⁶ or 2950000
Population = 2.15 x 10⁷ or 21500000
So population per square mile would be population divided by area.
21500000 / 2950000 = 7.3 people per square mile
Now if you look at the two numbers, the exponents are only different by 1. You can easily make the population have the same exponent as the area by moving the decimal place of the whole number
Population 2.15 x 10⁷ is the exact same as 21.5 x 10⁶. Now since both number have the same exponents, you can cancel those out and just divide the whole numbers. 21.5 divided by 2.95 which also equals 7.3.
24. You can look at this the same way.
China population 1.3 x 10⁹ is 1300000000
France population 6.48 x 10⁷ is 64800000
Dividing China by France you get about 20.1 which means China is about 20.1 times great in population than France.
If you use the same method as in question 23, you can change the population of China so the exponent matches that of France.
1.3 x 10⁹ is exactly the same as 130 x 10⁷
Again, since both exponents are the same, you can cancel them out and just divide the whole numbers.
130 / 6.48 which also equals about 20.1
Related Questions
Please answer all these with shown work I need them now
Answers
Answer:
1. 6+x, 2. 8 + 7x^2 - 2x + 5x^3, 3. 16x^3+11x^2-17x-12, 4. (x-2)(x+9), 5. 2x+3)(2x-3), 6. 2x(x+2)(x+5)
Step-by-step explanation:
Number 1
1. 2-3x+5+7+4x-8
2. 7-3x+7+4x-8
3. 14-3x+4x-8
4. 14+x-8
5. 6+x
Number 2
1. 8+3x^2+x -5x^3+4x^2-3x
2. 8+7x^2+x+5x^3-3x
3. 8+7x^2-2x+5x^3
Number 3
1.(simplify) 10x^3 + 5x^2 - 20x + 6x^2 + 3x - 12
2. 16x^3+5^2-20x+6^2+3x-12
3. 16x^3+11x^2-20x+3x-12
4. 16x^3+11x^2-17x-12
Number 4
(x-2)(x+9)
Number 5
(2x+3)(2x-3)
Number 6
2x(x^2+7x+10) or 2x(x+2)(x+5)
what is 2x86 + 87x3 kkkkkkkkkkkkkkk
Answers
Answer:
the Answer is 433
Step-by-step explanation:
Answer:
433
Hopefully this is right
What 2 decimal place number lies between 4.174 and 4.189 ?
Answers
Answer: 4.18
When looking at decimals, you only focus on the numbers after the “.” Point
Since the numbers are .17 approximately and .19 approximately when rounded to the nearest hundredth
We can safely .18 is in between .17 and .19
Because the integer 18 is between 17 and 19 on the real number spectrum.
Therefore 4.18 is between 4.174 and 4.189
Brandon enters bike races. He bikes 9
1
2
miles every
1
2
hour. Complete the table to find how far Brandon bikes for each time interval.
Distance (mi) 9
1
2
Time (h)
1
2
1 1
1
2
2 2
1
2
Answers
It's very difficult to understand the chart.Can you please take a screenshot of the chart?
The relationship between the number of pounds (lb) of salmon and the price
in dollars is shown in the graph. What is the unit price of salmon?
Answers
Answer:
9 dollars per pound of salmon
which graph represents the line x=4
Answers
Answer:
B
Step-by-step explanation:
With answer B, x is marked 4 on the x-axis and because there was no given y-intercept, the line must be vertical.
30 points and brainliest
Solve.
5.4x+ 5 = 8x−11
6.5(2x+ 1) = 8(−x+ 4)
7.7y−6 + 13y= 24 + 10y
8.(x−4)5=−15
Answers
Answer:
5. x = 4
6. x = 3/2
7. y = 3
8. x = 1
Quinn leaves her house at 10:00 am and runs 3 miles at a steady pace of 6 miles per
hour. She relaxes and takes a lunch break for 1 hour. She is pretty tired so she walks
home at a steady pace of 2 miles per hour. What time does Quinn return home
Answers
Using the relation between velocity, distance and time, it is found that Quinn returns home at 1 pm.
Velocity is distance divided by time, that is:
[tex]v = \frac{d}{t}[/tex]
She walked 3 miles at a velocity of 6 miles per hour, thus [tex]d = 3, v = 6[/tex]. The time is:[tex]v = \frac{d}{t}[/tex]
[tex]t = \frac{d}{v} = \frac{3}{6} = 0.5[/tex]
Thus, she arrived at 10:30 am, and took a lunch break of 1 hour, so she started to return at 11:30 am.Distance of 3 miles, velocity of 2 miles per hour, thus [tex]d = 3, v = 2[/tex]. The time she took to return, in hours, is:[tex]t = \frac{d}{v} = \frac{3}{2} = 1.5[/tex]
1.5 hours after 11:30 am is 1 pm, thus, Quinn returns home at 1 pm.
A similar problem is given at https://brainly.com/question/24316569
what could be the answer to my question in my maths work : 4.5 x 0.2
Answers
Which of the following expressions could be used to calculate the volume of the following sphere, with a diameter of 6cm.
Answers
Answer:
[tex]\frac{4\pi (3)^{3} }{3}[/tex]
Step-by-step explanation:
Because radio=6/2=3 cm (half of diameter)
I hope this help you
lines c and d are perpendicular. If the slope of like c is -4, what is the slope of line d?
A. 4
B. -1.4
C. -4
D. 1/4
Answers
Answer:
A 4
Step-by-step explanation:
-1/-4 = 4
The length of the base of an isosceles triangle is x. The length of a leg is 3x-7. The perimeter of the triangle is 70. Find x.
Answers
The length of a leg is 2x-5. (other leg the same length)
Question states*** perimeter of the triangle is 20
x + (2x-5) + (2x-5) = 20
5x - 10 = 20
5x = 30
x = 6, the length of th ebase. The length of each leg is 7
Answer:
HELLO CARA IT'S ME CONNIE, I MISS U SO MUCH!! <33
Colin buys a tv for £800. It depreciates at a rate of 1% per year. How much will it be worth in 2 years? Give your answer to the nearest penny where appropriate
Answers
Answer: £784.08
Step-by-step explanation:
First find 1% of 800, which is 800/100=£8
800-8= £792 after 1 year
find 1% of 792, which is 792/100=£7.92
792-7.92= £784.08
4 gallons of low fat milk cost 1.80, Find the cost of 6 gallons of low fat milk.
Answers
Answer:
2.70
Step-by-step explanation:
4 gallons 1.80
2 gallons 0.90(half)
6 gallons 2.70(both above)
Answer:
$2.70
Step-by-step explanation:
Divide 1.80 by 4 = $45 Cents
( Check : 45 x 5 = 1.8) (* Add 0 )
So since it is now known that a gallon of low fat milks costs $45 cents per gallon, multiply 6 by 0.45 and you'll get 2.7
So it can be a type of currency,
add 0
So the reuslt would be $2.70
Therefore, the cost of 6 gallons of low fat milk is $2.70 ( 2 dollars and 70 cents).
Help please and thank you
Answers
The answer could be 2 i don’t know really
Answer:
x = [tex]\frac{1}{2}[/tex]
Step-by-step explanation:
The opposite sides of a rectangle are congruent , then
10x - 1 = 4x + 2 ( subtract 4x from both sides )
6x - 1 = 2 ( add 1 to both sides )
6x = 3 ( divide both sides by 6 )
x = [tex]\frac{3}{6}[/tex] = [tex]\frac{1}{2}[/tex] ( = 0.5 )
Each sheep has 4 legs and each chicken has 2 legs.if a farm boy counts 50 heads and 130 feet, how many sheep are there
Answers
Answer:
15 sheep
Step-by-step explanation:
1 leg = 1 foot
1 head = 1 animal
Suppose all the animals are chickens:
50 × 2 = 100
130 - 100 = 30
4 - 2 = 2
30 ÷ 2 = 15
Hence, there are 15 sheep.
can anyone fill the blanks?
Answers
Answer:
see below
Step-by-step explanation:
2/5 + 1/3 + x = 1
Get a common denominator of 15
2/5 * 3/3 + 1/3 *5/5 +x = 1
6/15 + 5/15 +x = 1
11/15 + x = 1
Subtract 11/15 from each side
11/15 +x-11/15 =15/15-11/15
x = 4/15
What is the length of the missing side?
(your answer should be in decimal format up to two decimal place OR left as a square root)
Answers
Answer:
the length of missing side is √115(ie.10.723)
Show all work to identify the asymptotes and zero of the function f of x equals 4 x over quantity x squared minus 16.
Answers
9514 1404 393
Answer:
asymptotes: x = ±4, y = 0zero: x = 0Step-by-step explanation:
The function factors as ...
[tex]f(x)=\dfrac{4x}{(x-4)(x+4)}[/tex]
The vertical asymptotes are found where the denominator factors are zero:
x-4 = 0 ⇒ x = 4
x+4 = 0 ⇒ x = -4
The zero of the function is where the numerator is zero:
4x = 0 ⇒ x = 0
The horizontal asymptote of the function is the value of 4x/x² when x tends to infinity. That value is zero. The equation of the horizontal asymptote is ...
y = 0
3x^(2)-4 x=2 HELP ASAP
Answers
Answer:
8
Step-by-step explanation:
If you're evaluating, then substitute x=2 into the equation.
That gets you 3(2)^2-4
Then do 2^2 and multiply by 3, that should get you 12
After that, subtract 4 from 12, which gets you 8
To all you misguided people out there:
On brainly your supposed to answer the question.
Then Explain your answer
Answers
Answer:
See below.
Step-by-step explanation:
I think you're supposed to solve the problem explaining all steps, and then copy the answer to the top.
Which of the following numbers are perfect squares? 35 145 169 18
Answers
This is because 13x13=169
[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
Among the given numbers,
169 is the perfect square.
[tex] \sqrt{169} = 13[/tex]
Consider the following data set:
2 , − 3 , − 3 , 1 , 8 , 12 , 14 , 2
Find the lower quartile.
Answers
Answer:
1
Step-by-step explanation:
that's the lowest number
Please help me with this problem I will give you the brain thing and extra points
Which equation in standard form has a graph that passes through the point (5, -4) and has a slope of -6/5?
A)6x + 5y = 10
B)6x - 5y = 10
C)5x + 6y = 10
D)5x - 6y = 10
Answers
Answer:
b
Step-by-step explanation:
y= 2x + 2 and 2y = 4x + 4
Answers
Answer:
here ya go
Step-by-step explanation:
Answer:
y = 2x +2
Step-by-step explanation:
im struggling with this :D i need help!
Answers
Answer:
not a real number
Step-by-step explanation:
any negative number under a square root sign, except for 0, isn't real
On evaluating the given roots,
(a) [tex]$-(\sqrt[3]{8}) = -2$[/tex]
(b) [tex]$\sqrt[4]{-81}$[/tex] is not a real number
(a) [tex]$-(\sqrt[3]{8})$[/tex]:
The cube root of 8 is the number that, when raised to the power of 3, equals 8. In this case, the cube root of 8 is 2, because [tex]2^3 = 8[/tex].
Since we have a negative sign in front of the cube root, the result will be the negative value of the cube root of 8.
Therefore, [tex]$-(\sqrt[3]{8}) = -2$[/tex].
(b) [tex]$\sqrt[4]{-81}$[/tex]:
The fourth root of a number is the number that, when raised to the power of 4, equals the given number.
In this case, we are looking for the fourth root of -81.
However, the fourth root of a negative number is not a real number. This is because raising a positive number to an even power (in this case, 4) will always result in a positive value, and there is no real number that, when raised to the power of 4, gives a negative result.
Therefore, the fourth root of -81 is not a real number.
To know more about roots, refer here:
https://brainly.com/question/12105008
#SPJ2
D
13
5
A
B
С
AABD = ACBD, DB = 5, DA = 13,
CD = [?]
Answers
Answer:
CD = 13
Step-by-step explanation:
it is given that both the triangles are congruent so ,
DA = CD = 13
therefore, CD is 13.
hope this answer helps you dear take care!
8. Name two line segments.
Answers
A pen / pencil.: A pen or a pencil are usually straight and are of a fixed length of about 15-20 cm.
THIS IS MY LAST QUESTION PLEASE HELP ME ILL LOVE U FORVER.
Answers
Answer:
Part A: 6250
Part B: No
Step-by-step explanation:
Part B: When Time is 2 Hours, the cost is $30.
30x3=90 < 100
So the unlimited weekly pass is not cheaper
(Find the value of y by given x)
What is the vertex form of the equation?
y=-22 + 122-4
Answers
Answer: y=140!!!
:)
Hope you have a good one <3