In scientific notation, 330 is written?

Answers

Answer 1

Answer: 3.3 x 10^2

When you convert a number to scientific notation, you have to move the decimal right or left so that the whole number falls between 1 and 10. You then "describe" what you would multiply by to get the original number by multiplying by 10^x. x is the number of decimal places you moved. If you move the decimal to the left, it will be a positive exponent. If you move the decimal to the right it will be a negative exponent. Here are some examples...

10,000 = 1 x 10^4
0.0001 = 1 x 10^-4

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-7(1+7n)=36-6n this is a very hard solving equations question I don't get HELP!!!

Answers

n=-1 distribute then isolate your variable and divide

-7(1 + 7n) = 36 - 6n
-7(1) - 7(7n) = 36 - 6n
-7 - 49n = 36 - 6n
   +49n    +49n
   -7 = 36 + 43n
   -36   -36
      -43 = 43n
   43    43
      -1 = n

Determine whether the graphs of the given equations are parallel, perpendicular, or neither. y=x+11
y=-x+2

Answers

its not perpendicular cause they dont meet, its isn't parallel cause their both on the y , i guess its neither ..

If 4 is added to three quarter of a number and the result is 1. Find the number.

Answers

Answer:

-4

Step-by-step explanation:

Letthenumber beX

According to Question,

$4 + (3)/(4) x = 1$

$4 + (3)/(4) x - 4 = 1 - 4$

$(3)/(4) x = - 3$

$x = ( - 3 * 4)/(3)$

$x = ( - 12)/(3)$

$x = - 4$

Hopethishelps...

Goodluck on your assignment...

A motorcycle can travel 70 miles per gallon. Approximately how many gallons of fuel will the motorcycle need to travel 60 km?

Answers

We have the following given
mileage = 70 miles per gallon
distance = 60 km

Required: amount of fuel in gallons

First, we must convert the distance to miles, so
60 km (1 mi/1.6 km) = 37.5 mi

So, the amount of fuel is
37.5 mi / (70 mi/gal) = 0.54 gallons

Answer:

0.54 gallons

Step-by-step explanation:

Hi I need some help with these questions. Thanks :)1. 3 consecutive odd numbers add to give 405. Find the smallest of the numbers.

2. 5 times a number less 7 is equal to 7 times the number plus 13. Find the number.

3. Chris earns four times Vesna's wage v and Vesna earns $17 more than Dawn. How many dollars does Chris earn if their combined wages are $163?

4. Percy is 8 years older than Ginny. In ten years time he will be three times Ginny's present age. How old is Percy now?

5. The two equal sides of an isosceles triangle are given as ( x + 2 ) cm and the third is ( x + 6 ) cm. I the perimeter of the triangle is 385 cm, find the value of x.

6. A choc frog is 11 cents dearer than a green frog. 3 green frogs and 2 choc frogs cost 57 cents. What is the cost of a choc frog I cents?

Answers

1. 3 consecutive odd numbers are x, x+2, x+4
x+x+2+x+4=405
x+x+x+2+4=405
3x+6=405
3x=399
x=133 (smallest of the numbers)

2. Let the number =x
5x-7=7x+13
-7-13=7x-5x
-20=2x
x=-10

3. Chris earns 4v, Vesna earns v, Dawn earns v-17
4v+v+v-17=163
6v-17=163
6v=180
v=$30
Chris earns 4v=$120

4. Ginny is x years old, Percy is x+8 years old
  In 10 years time, Percy will be x+8+10=3x
  x+18=3x
  18=2x
x=9
  Percy is 9+8 years now=17 years

5. Perimeter of the triangle=sum of its sides
  385=x+2+x+2+x+6
  385=3x+10
  375=3x
  x=125cm

6. A choc frog costs x. A green frog costs x-11
2x+3(x-11)=57
2x+3x-33=57
5x=90
x=18 cents
  A choc frog costs 18 cents

At noon, the minute and hour hands overlap. In how many hours will they overlap again?

Answers

24 hours

Because 24 hours equals 1 day or one rotation of the clock

Answer:

1 hour 5 9/20 minutes

Step-by-step explanation:

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