Mathematics Middle School

Help please 15 points

Answers

Answer 1

Answer:

1. The area of land is 23.1 x 10^9 square meters in scientific notation

2. We can represent this area as 2.31 x 10^4 square kilometers in scientific notation

Hint: 1 square km is equal to 1 x 10^6

3. The unit square kilometers is more appropriate to represent the area of forest land scientific notation.

Answer 2

2484x the answer sis

Related Questions

help please i just need both answers

Answers

Answer:

3.27 for top one and 5.2 for bottom one

Step-by-step explanation:

A is 3.27 pages and B is 5.2 hours

In the diagram, m∠1=(113−y)°, m∠2=36°, and m∠3=(x+34)°. Write an equation to solve for x and an equation to solve for y. Find the values of x and y.

Answers

Answer:

Sorry I don't know the answer but here's where you can find it! bit .ly/3gVQKw3

If you add a picture of the diagram. I can definitely help you but since there isn’t one. I’m not sure sorry.

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Help!, giving brainliest if right!

Answers

Answer:

151.7cm^3

Step-by-step explanation:

To work out the volume you have o multiply all the sides. In this case you have the measurements 10, 4.1, 3.7

Multiply:

10 * 4.1 = 41

41 * 3.7 = 151.7

Answer:

Volume = 151.7 cm3

Step-by-step explanation:

Multiply 3.7×4.1×10

which gives you th answer 151.7 cm3

h + 4g I don't know, Anyone?

Answers

Is that the question is there any parts to it I mean I guess it’s a plot

I think there’s another part to it

18 is 80% of what? PLEASE ANWSER

Answers

I believe the answer is 22.50

Answer:

22.50

Step-by-step explanation:

PLEASE ANSWER ASAP
Determine the number of solutions to each equation.

Select no solution, one solution, or infinitely many solutions for each equation:

2/3x=0

- no solution

- one solution

- infinitely many solutions

m−8=m−8

- no solution

- one solution

- infinitely many solutions

5+q=−5+q

- no solution

- one solution

- infinitely many solutions

0.7n=1

- no solution

- one solution

- infinitely many solutions

Answers

Answer:

no solution

Step-by-step explanation:

No solution is the answer

Main and helping words sorry i meant English
not math

Answers

Answer:

its in the link

Step-by-step explanation:

are there a list of verbs?

helppppppppp.>>>>>>>>>>>>

Answers

Here is ur answer

(4,2)

hope it is helpful to u

if iyes plz mark me brainlest

Your answer is 4,2 pls give me brainlist

1 of many ALEKS questions
(screenshot)

Answers

8/7 simplified is 1 1/7

( 8 X 16.95 ) - 7.50

Answers

Answer:

128.1

hope this helps

have a good day :)

Step-by-step explanation:

Answer:

128.1

Step-by-step explanation:

please answer the question in the photo

Answers

Answer:

Its C

Step-by-step explanation:

The equation for finding the volume of a cylinder is V=πr2h

Answer: i think it could be C not sure tho

Step-by-step explanation:

please dont answer if your not sure

Answers

Answer:

AC 4x + 16

Angle BEC is 72 degrees

Step-by-step explanation:

AE is 2x + 8, and AC is 2 times bigger, so 4x + 16

Angle EAD is the same as angle EDA, which is 54 degrees, a triangle has 3 sides measuring 180 degrees total, 54 + 54 = 108, so the last angle is 180 - 108 = 72, angle AED is 72, since angle BEC is the same as angle AED, it is also 72 degrees

Manuel wants to build a model of a superhero's famous shield. He decides to cut a circular shape out of cardboard. Manuel knows that the outer ring of the shield is colored yellow. The next ring is white. The third ring in is also yellow. The center is white with a green key. The radius of the entire shield is 12 inches; however, Manuel wants to know how much yellow paint he will need so he does some measurements as shown in the diagram below. He measures the radius of the inner circle as 4.5 inches. He measures the radius to the second circle as 7 inches. The radius to the third circle as 9.5 inches. What is the area of the space Manuel will paint yellow? Use 3.14 for pi

Answers

Answer:

B : 259.18in^3

Step-by-step explanation:

find the area of all the circles you have to use the formula A=πr2 and these are the sizes

smallest white : A≈63.62in

yellow 2nd circle: A≈153.94in

3rd circle white: A≈283.53in

largest yellow circle: A≈452.39in

first you have to start with the smallest circle which the area is 63.62 then you go to the 2nd circle which is yellow which the area is 153.94 since you are trying to find only the area of yellow you have to subtract 63.62 from 153.94 which you get 90.32 then you have to go to the 3rd circle which then you have to subtract the 90.32 from 283.53 which comes out to be 193.21 then you finish with the last circle which the area is 452.39 then you have to subtract the last 193.21 which comes out to be 259.18in

the reason you subtract every time you went to the bigger circle because that number was the opposite color if you had 2 yellows in a row you would have to add them just as an example.

The answer is B!!!!!!!!

please help no fake answers or links T^T this is a for a test directions in pic.

Answers

Answer: 45 decided by 45%

Step-by-step explanation:

1+1+1+1+ in exponent form

Answers

Answer:

here is ur answer

Step-by-step explanation:

1^4

hope it is helpful to u

plz mark me brainlest

Hello their!!.......

Which situation can be represented by the y=74x

Answers

The correct answer is A

I think the answer is A✨

There are 25 Treats on The fable. Cynthia has to fill 5 baskets with These Treats. If she places an equal number of Treats inside of each basket, how many will there be in each?

Answers

All you have to do here is divide the number of treats there are (25) by the number of baskets that need to be filled (5) to get an even number of treats that can go into each basket. So, 25/5 is equal to 5.

Hope this helps!

Answer: 5 treats

Step-by-step explanation:

25 ÷ 5 = 5

Please help!!!! Please help!!!!

Answers

Answer:

44 cm²

Step-by-step explanation:

To find the area of a compound figure like this, we can divide the shape into various rectangles and compute the areas of them separately before adding them together.

There are several ways to divide this shape, but for this we will section the shape into a 3×3 square, 4×2 rectangle, and a 3×9 rectangle.

To find the areas of them, multiple the length by the width.

For the 3×3 square at the top right-

[tex]A=3\cdot 3[/tex]

[tex]A=9[/tex]

The square is 9 cm².

For the 4×2 rectangle at the top left-

[tex]A=4\cdot 2[/tex]

[tex]A=8[/tex]

The rectangle is 8 cm².

For the 3×9 rectangle at the bottom-

[tex]A=3\cdot 9[/tex]

[tex]A=27[/tex]

The rectangle is 27 cm².

Now that we have the areas of each individual piece of the figure, we can add them together to find the total area of the shape.

[tex]A=9+8+27[/tex]

[tex]A=44[/tex]

The area of the figure is 44 cm².

I hope this helps ^^ Good luck :)

Sry it’s not neat I had to draw it on my phone but the answer is 44 because 3x3=9 and 4x2=8 and 9x3=27. So 9+8=17 and 17+27=44cm

Football team needs to gain 10 yards to score touchdown. On the first play the team gained 7 yards. on the second play they were penalized and lost 5 yards on the. third play they gained 2 yards. how many more yards must they gain on the forth play in order to score?

A. 2 yards
B. 4 yards
C. 6 yards
D. 8 yards

PLEASE HELP

Answers

Answer:

Step-by-step explanation:

The correct answer is 4 yards

Thirty out of 40 students passed the algebra test in their math class. what percentage of the students didnt pass the test?

Answers

Answer: 25%

Step-by-step explanation: 40-30= 10 10/40= .25

Answer: 90%

Step-by-step explanation:

zoom in to see question.

Answers

Answer:

Step-by-step explanation:

because it is promotional

The answer is c not d

What is the difference between a photon and a molecule?

Answers

Answer:

See Explanation

Step-by-step explanation:

An atom is the smallest particle of matter holding the basic properties and characterstic of the matter. An atom consist of positive charged protons and chargeless neutrons at its centre and the negatively charged electrons are revolving around the nucleus. An atom do consist of energy levels corresponding to which the electrons revolve around the nuclues in the respective energy level.

Now a photon is an energy packet, or we can say a particle of light carring energy with it.

An atom is a particle of a matter and a photon is a particle of light.

A 3ft baby elephant standing next to a man casts a 7ft shadow, if the man casts a 14 foot shadow, how tall is he?

Answers

Answer:

6ft

Step-by-step explanation:

First you figure out 7/3 which is 2.3333333...

then do 14/2.33333333...

3ft length=7 shadow 7 goes perfectly into 14 2 times. So 3•2= 6ft The man is 6ft tall

what is the answer to 9/10=8/a+6

Answers

Answer: 2.8, hope it helps.

Answer: 2.8 :) hope it helps I’m not rly good at this

Which store has the lowest cost per pound for hamburger? Name of Store Hamburger package sizes (lbs) Cost per package ($) Food King 8.0 pounds $40.00 Thrifty Mart 0.5 pounds $3.00 Shop More 5.0 pounds $35.00 Super Save 1.5 pounds $10.50

Answers

Food king

Here is a photo of math if needed

I believe it is Food King!

help me again pls :D sorry for the bother

Answers

Answer:

Step-by-step explanation:

2x2.5x3= 15

2x2.5x4.5=22.5

2.5x3x4=30

2.5x2x4=20

Answer:

The answer is A because it is the only answer that is 18 ft^3 or less.

Step-by-step explanation:

You have to multiply all the dimensions to get the total area.

a. 15ft^3

b. 22.5ft^3

c. 30ft^3

d. 20ft^3

PLEASE HELP ASAP
Rewrite the expressions without the absolute value sign.

|x+12| , if x>−11

Answers

If x< -5 then x+5 < 0
but the absolute value of x+5 > 0

X+12 >-11
X> -23
But also you have to write a second equation to get both possible answers for x since it was in absolute value
X+12>11
X>-1
So x > -23, -1

Mrs. Holder drove through a total of 36 intersections on her way home from school last week. At 4 of every 16 intersections, Mrs. Holder had to stop for a red light before she could drive through. At how many intersections did Mrs. Holder have to stop for a red light?

Answers

I got 8. Because 36/16 is basically 2 and every 4 of 16 would be 8. But it could also be 9

Which graph shows the solution to the system of linear equations?

y equals one third x

x + 3y = −6

Answers

Answer:So let's start by guesstimating the slopes:

the green line has a slope close to -x, but more negative than that, possibly -2; the pink line has a slope close to +x, but higher towards +2.

Next let's look at the solution: the two lines intersect at the point (1, -1).

**you could just simple plug that x (1) into all the equations, but let's rule out answers anyway. ;)

A) is incorrect because the slopes of -1 and +1 are off from out predicted -2 and +2

B) is incorrect because of a similar reason, the slopes of +3 and +1 don't make any sense

C) Ooh, we do have a +2 and -2 for the slopes, and... violà! plug in 1 for the x's and we get -1 for the y in both equations

D) slopes are closer than in A and B, but plugging in 1 doesn't get us -1

So the correct answer is:

C) y = 2x - 3 and y = −2x + 1

Step-by-step explanation:

The correct answer is C

HELP ASAP DUE AT 7;00

Answers

Answer: i have the answer to the first one good luck on your assignment!

Step-by-step explanation: 1. 12.5 yds at 4.50 per yd : 12.5 * 4.50 = 56.25....what she paid for the fabric

she uses 2.5 yds of fabric for each dog bed.....12.5 / 2.5 = 5...so she can make 5 dog beds

each dog bed sells for 17.50.....5 * 17.50 = 87.50

87.50 (what she earned from selling the dog beds) - 56.25 (the cost of the fabric) = 31.25......so her total profit is $ 31.25 <==

Answer: I'm gonna answer the last one

Step-by-step explanation:

First lets add up Rosalva

1.5+0.69+1.04+2.1=5.33

Next lets do Jake

1,450+1,590+1204+1,977=6,221

We have two different measurements, we want them to be the same. We are gonna change Rosalva. One kilometer equals 1,000 meters. If u use the g o o g l e calculator it says that 5.33 kilometers equals 5330 meters. since u need to show work just multiple 5.33 by 1,000.

Last we need to find the difference soooooooo 6,221-5330=891 meter difference :)

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