MATHEMATICS HIGH SCHOOL

4v = 20
Help please

Answers

Answer 1
Answer:

Answer:

v=5

Step-by-step explanation:

you are trying to make 4v into v right ?

so simply divide it by 4 - the same if it was 4a or 7a or 9k, always start by dividing by the number

then you need to balance the two sides - so whatever number you divide the letter by (which is the 4 in this case) , you do the same with the other side , so whatever number is after the equal sign , divide it by 4

PART ONE                                      ↓ 4v  =   20  

           DIVIDE BY 4                       →  v   =    20

PART TWO                                          v   =   20 ↓

                                                            v   =     5 ←           DIVIDE BY 4

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Write the equation of the line that has a y-intercept of (0,4) and a slope of 2.

Answers

Answer:

y=2x+4

Step-by-step explanation:

the y-intercept is the y value of the point given. in the slope form, 2 would be your m

Find the slope of a line perpendicular to the line whose equation is 3y + 2x = 6

Answers

3y + 2x = 6\n \nthe \ slope \ intercept \ form \ is : \n \n y= mx +b \n \n3y=-2x+6 \ \ /:3\n \ny=-(2)/(3)x+(6)/(3)\n \ny=-(2)/(3)x +2 \n \n m = -(2)/(3) \n \n Answer : \ slope \ is \ m = -(2)/(3)

A hybrid car can travel 40 miles per gallon. Approximately how many gallons of fuel will the car need to travel 20 km? (5 points) [1 mile = 1.6 km]

Answers

Answer:

To travel 20 Km, the hybrid car needs 0.3125 gallons of fuel.

Step-by-step explanation:

Proportions

The hybrid car can travel 40 miles per gallon.

Since one mile is equivalent to 1.6 Km, the distance traveled per gallon is 40*1.6 = 64 Km.

Now the distance is expressed in Km, we can find the gallons needed to travel 20 Km, by calculating 20/64 = 0.3125.

To travel 20 Km, the hybrid car needs 0.3125 gallons of fuel.

The midpoint of a segment is (−6,−5) and one endpoint is (1,3). Find the coordinates of the other endpoint.A. (8, 11)
B. (8, -13)
C. (-13, -13)
D. (-13, 11)

Answers

Answer: C. (-13, -13)

Step-by-step explanation:

The midpoint (x,y) of a line segment having two end points (a,b) and (c,d) is given by :-

x=(a+c)/(2)\ ;\ y=(b+d)/(2)

Given : The midpoint of a segment is (-6,-5) and one endpoint is (1,3).

Let the coordinates of other end point be (a,b) then , we have

-6=(a+1)/(2)\ ;\ -5=(b+3)/(2)\n\n\Rightarrow\ a+1=2*-6\ ;\ b+3=2*-5\n\n\Rightharrow\  a+1=-12\ ;\ b+3=-10\n\n\Rightarrow\ a=-12-1\ ;\ b=-10-3\n\n\Rightarrow\ a=-13,\ ;\ b=-13

Hence, the coordinates of the other endpoint = (-13,-13)
C. (-13,-13)
You take the x of the midpoint and equal it to the formula of the midpoint so it will be -6 = 1+x/2 so 1st you times 2 by 6 because you wanna get rid of 2 so it will -12 Then when you move 1 so x is alone it will be -1 so -12-1= -13
Same thing for y

Round 1330.464489 to one decimal place

Answers

Answer:

1330.5

Step-by-step explanation:

I rounded to the tenths place.

Answer:

1330.5

Step-by-step explanation:

Hope this helps! <3

Round 2.6 to the nearest tenth

Answers

2.6 is already rounded to the nearest tenth.  

If the original answer was 2.67345, it would be rounded to 2.7. 
or 
if it were 2.63421; it would be 2.6

The number after a decimal; (2.6 is the tenth)


816.45 = hundred
816.45 = ten
816.45 = one
816.45 = tenth
816.45 = hundredth
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