I need help 8th grade math

Answer:

The length of 83,800,000 in scientific notation is 8.38 x 10^7

Answer: 838 x 10^5

Step-by-step explanation: We first have to focus on the Zambezi which is 83,800,000 there are 5 zeros, but we have three options 8.38 x 10^7, 83.8 x 10^6, and finally 838 x 10^5, but scientific notation includes no decimals so it is 838 x 10^5.

Answer:

Step-by-step explanation:

im lost

Answer:

8 miles per hour

Step-by-step explanation:

Actually pretty simple. It took 15 minutes for the bag to travel two miles from the Breakneck Ridge so it will be four miles per 30 minutes six miles per 45 minutes and 8 miles per hour.

Answer:

Step-by-step explanation:

There is one solution to the equation 7-4x=2+x+6-5x. Solving for x gives x = 1, so there is only one solution.

Answer:  -2597

Step-by-step explanation: First, you multiply 1 x 7 to get 7, then subtract 13 from that, and multiply that by 56. Then you find what 7 -5 x 500 is, and divide it by the first part you got, to ger -2597. I'm sorry If I'm wrong .

Answer:

-2597

Step-by-step explanation:

Using PEMDAS, M would be multiplying so you you multiy 1x7 then times 56 then S is for subtraction so then you subtract 13, save that first set (1x7-13x56) to the side and now lets do the other set (7-5x500) first you would multiply it by the 500 and you get 3,500 then subtract it now get your two answers and divide it, then youll get -2597

Answer: this might be wrong

c

Step-by-step explanation:

Sorry if this is wrong

Answer: c

Step-by-step explanation:

Answer:

 The y intercept is (0,1.69) and not (0,169)

Step-by-step explanation:

substituting, y=-1(x+1.3)(x-1.three) observe that this is distinction of squares y=-[x2-(1.3)2] , y=-(x2-1.69), y=-x2+1.69

Answer:

its 4-6

Step-by-step explanation:

Answer:

is the answer of 50 and spend 20 you have 30 left

Answer:

40%

Step-by-step explanation:

A good way to remember how to do percentages is starting with 10% of overall.

Overall, 10% of the $50 would be $5
you just move the decimal from $50.00 to $5.00
moving it to the left once, for ten percent

theres $20 so thats the 10x2

20 goes into 100, 5 times ...

It just so happens in this scenario, its 20% just like the $20 ... doesnt always happen like this.

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The answer is 8 so its a direct proportion

I think...

The constant of Proportionality is 8.

If the ratio of one variable to the other is constant, then there is a proportional relationship between the two variables. If x and y are in a proportional relationship, then the ratio of y to x is the constant of proportionality. We can also express it as x is to y at times.

Given:

Total Baseball Caps= 30

Total amount of Cap= $240

let the number of caps sold be c.

Then, the equation is

30 c= 240

and, c= 240/30

c= 8

Hence, the constant of Proportionality is 8.

Learn more about constant of Proportionality here:

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Answer:

560

Step-by-step explanation:

i added 6p percent

Answer:

350, percentage increased by 60% (percent) of its value = 560

Answer:

A sequence is a function whose domain is the set of natural numbers or a subset of the natural numbers. We usually use the symbol an to represent a sequence, where n is a natural number and an is the value of the function on n.

100

35/42 is about 83 percent 83 percent of 120 is roughly 100

The answer is 100 females

Answer:

Its the second one

Step-by-step explanation:

Answer:

Step-by-step explanation:

Input Data :

Point 1

(

x

A

,

y

A

)

= (-1.5, 1.25)

Point 2

(

x

B

,

y

B

)

= (-1.5, -0.75)

Objective :

Find the distance between two given points on a line?

Formula :

Distance between two points =

√

(

x

B

−

x

A

)

2

+

(

y

B

−

y

A

)

2

Solution :

Distance between two points =

√

(

−

1.5

−

−

1.5

)

2

+

(

−

0.75

−

1.25

)

2

=

√

0

2

+

(

−

2

)

2

=

√

0

+

4

=

√

4

= 2

Distance between points (-1.5, 1.25) and (-1.5, -0.75) is 2

The vertical distance between the points A and B are D = 2 units

Let the two points be A ( x₁ , y₁ ) and B ( x₂ , y₂ )

The distance from A to B is the same as the distance from B to A

Distance between two points is the length of the line segment that connects the two points in a plane.

The formula to find the distance between the two points is usually given by D = √( ( x₂ – x₁ )² + ( y₂ – y₁ )²)

This formula is used to find the distance between any two points on a coordinate plane or x-y plane

Given data ,

Let the distance between 2 points be represented as D

Now , let the first point be A ( -1.5 , 1.25 )

Let the second point be B ( -1.5 , -0.75 )

The distance D = √( ( x₂ – x₁ )² + ( y₂ – y₁ )²)

And , the vertical distance between A and B = |y-coordinate of A - y-coordinate of B|

So , the value of D = |1.25 - (-0.75)|

D = 2 units

Hence , the vertical distance is D = 2 units

To learn more about distance between two points click :

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Answer:

2:3 = 75

so 25 girls are there in the class

Step-by-step explanation:

Answer:

(3/2 m)^2 -(5n)^2^

Step-by-step explanation:

Answer: 9m^2 / 4  -  25n^2

Step-by-step explanation:

Use the identity: (a-b)(a+b)=a^2 - b^2
substitute values of a and b, where a=3/2m and b=5n.
The following simplifies to (3/2m)^2 - (5n)^2.

Answer:2/3

Step-by-step explanation: the line is at the same distance at (-2,-10) as it is at (4,-6)

so from (-2,-10) to (4,-6) is 2 up and 3 over

meaning 2/3 = slope

Answer: 6

Step-by-step explanation:

divde 5 by 2 them multiply your exponet

Answer:8/125

Step-by-step explanation:

Answer:

A. On the x-axis

B. In Quadrant 2  

Step-by-step explanation:

Happy Holidays! I love your profile pic!

Answer:

The num is three

Step-by-step explanation:

4 x 3 = 12

12 + 3 = 15

15 = 5 x 3

Answer:

A and D would be your 2 sample spaces

Step-by-step explanation: because we can see its clearly not C or E so that leaves us with A , B, and D. I belive that B isnt a asnswer choice so that leaves A, and D

mark me brainless please it helps me

hope this helps

I would say A and D

There is no way that E and C are the answer. B is a no because TG…? What does TG mean? Some of the letters in choice B doesn’t make sense to me.

Answer:

Answers below

Step-by-step explanation:

B. is [tex]1 \frac{2}{5} *3=4 \frac{1}{5}[/tex]

C. 75 -:- 2[tex]\frac{1}{5}= 30[/tex]

D. 27-:-6=4.5(or 4 and 1/2)

Answer: n-2

Step-by-step explanation: anything with negative would be subtraction ( any variable anyway )

The linear function that represents the amount of baskets in the xth month of the year is given as follows:

The percentage of her collection that she needs to get rid of is of 3.85%.

Linear Function:-

The definition of a linear function is:

y = b + mx

In which the parameters of the equation are given as follows:

•b is the value of y when x=0

•m is the rate of change for each unit of x

Every month she adds 2 new baskets to her collection, hence the slope is of : m = 2

Then: y = b + 2x

From the March amount, when x = 3, y = 60, hence the intercept b is given as follows:

60 = b + 6

b = 54

Hence the equation is: y = 54 + 2x

At the end of the year (12 months) the amount of baskets that she will have is of:

y = 54 + 2 × 12 = 78

Hence, she has to get rid of 3 baskets, as 78 - 75 = 3, and the percentage is of:

p = 3/78 × 100% = 3.85%.

Answer:

Step-by-step explanation: The linear function that represents the number of baskets in the month of the year is given as follows:

The percentage of her collection that she needs to get rid of is of 3.85%.

The definition of a linear function is:

y = b + mx

In which the parameters of the equation are given as follows:

•b is the value of y when x=0

•m is the rate of change for each unit of x

Every month she adds 2 new baskets to her collection, hence the slope is: m = 2

Then: y = b + 2x

From the March amount, when x = 3, y = 60, hence the intercept b is given as follows:

60 = b + 6

b = 54

Hence the equation is: y = 54 + 2x

At the end of the year (12 months) the number of baskets that she will have is:

y = 54 + 2 × 12 = 78

Hence, she has to get rid of 3 baskets, as 78 - 75 = 3, and the percentage is of:

p = 3/78 × 100% = 3.85%.