1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Taya2010 [7]
3 years ago
12

How to express negative numbers in scientific notation?

Mathematics
1 answer:
Marta_Voda [28]3 years ago
3 0
I used -25 as an example:
Answer:
= -2.5 × 101
(scientific notation)

= -2.5e1
(scientific e notation)

= -25 × 100
(engineering notation)
(one)

= -25
<span>(real number)

</span>Scientific notation<span> is used to </span>express<span> very large or very small </span>numbers<span>. A </span>number in scientific notation<span> is written as the product of a </span>number<span> (integer or decimal) and a power of 10. The </span>number<span> has one digit to the left of the decimal point. The power of ten indicates how many places the decimal point was moved.</span>
You might be interested in
What is the degree of the polynomial −6x3y2 5x4−7z?
tatyana61 [14]

4

I also recommend writing the polynomial as -6x^3y^2 5x^4-7z as it was a bit confusing to tell which numbers were the exponents.

8 0
3 years ago
Read 2 more answers
Four research teams each used a different method to collect data on how fast a new iron skillet rusts. Assume that they all agre
svet-max [94.6K]

Answer: for how fast paint dries problem the answer is 68% with A confidence interval of 44.5 to 45.5

Step-by-step explanation: apex

6 0
3 years ago
Read 2 more answers
A new online store charges all customers one price to download any song and another price to download any game. Jenna paid $20.5
OLga [1]
X songs
Y games

A) 8X + 3Y = 20.50
B) 4X + 5Y = 22.50

Multiplying equation B) by -2
B) -8X -10Y = -45.00  then adding this to
A) 8X + 3Y = 20.50  we get
-7Y = -24.50
Y = 3.50

I think you can calculate X right?


8 0
3 years ago
Madaraka express arrived in Mombasa at 0545hrson Thursday after travelling for
Liono4ka [1.6K]

Answer:

Step-by-step explanation:

For this question, you count backwards from 0545hrs which is 5:45 am until 7hrs is reached.

5:45 am Thursday

↓

4:45 am Thursday

↓

3:45 am Thursday

↓

2:45 am Thursday

↓

1:45 am Thursday

↓

12:45 am Thursday

↓

11:45pm Wednesday

↓

10:45 pm Wednesday

Therefore, Madaraka express left Nairobi at 10:45 pm on Wednesday

4 0
3 years ago
a rectangle has a length of (x+3) centimeters and a width of 1/2x centimeters. If the perimeter is 24 centimeters, what is the l
bogdanovich [222]

Answer:

The length of the rectangle is 9 cm

Step-by-step explanation:

Given: The length of rectangle(l) = (x+3) cm and a width of rectangle (w) = \frac{1}{2} x cm a

Also, perimeter of rectangle is 24 cm.

Perimeter of rectangle is to add the lengths of all the four sides.

Perimeter of rectangle (P) is given by;

P=2(l+w)

Substituting the value of P = 24 cm , l = (x+3) cm and w =\frac{1}{2} x

then,  

24 = 2 (x+3+\frac{1}{2} x)

Divide by 2 both sides of an equation;

12 = x+3+\frac{1}{2}x

Combine like terms;

12 =\frac{3x}{2} +3

Subtract 3 from both the sides we get;

12-3 = \frac{3x}{2} +3-3

Simplify:

9 =\frac{3x}{2}

Multiply both sides by \frac{2}{3} we get

x = 9 \times \frac{2}{3} = 3 \times 2 = 6

Therefore, length of rectangle(l) = (x+3) = 6+3 = 9 cm

6 0
3 years ago
Other questions:
  • Find the value of x and y.
    12·1 answer
  • Jack met Jill Jill had 16 gallons of water in a bucket jack has ? gallons of water in his bucket answer the equation to figure o
    13·2 answers
  • If one leg of a right triangle measures 3 centimeters and the other leg measures 6 centimeters, what is the length of the hypote
    12·2 answers
  • Simplify square root of 2 multiplied by the cube root of 2.
    12·1 answer
  • Solve and explain (x^2+2xy+y^2)(x+1)
    5·2 answers
  • Could anyone pls help me with these two questions on 3d trigonometry?
    11·1 answer
  • AD is the angle bisector of EAB. Solve for X
    7·1 answer
  • A car travels 32 km due north and then 46 km in a direction 40° west of north. Find the direction of the car's resultant vector.
    9·1 answer
  • Which are the better statistics to use to compare the school class sizes?
    5·1 answer
  • Please find the slope
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!