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
Vaselesa [24]
2 years ago
13

Simplify (2.8 × 10−9) − (6.9 × 10−8). Write the final answer in scientific notation

Mathematics
1 answer:
s2008m [1.1K]2 years ago
5 0

Answer:

-4.2 x 10^1

Step-by-step explanation:

Simplify expression regularly, and then convert to scientific notation by moving decimal and dividing.

You might be interested in
You only need to answer one, check for answer to that question before you answer one
LiRa [457]

Answer:

31 degrees (the first one)

Step-by-step explanation:

90 degree angle,

90-59=31

3 0
3 years ago
Read 2 more answers
Ronald is preparing lemonade for his friends.To make 6 cups of lemonade, he needs q cup of lemon juice.To make 24 cups of lemona
11Alexandr11 [23.1K]

Solution: We are given:

To make 6 cups of lemonade, Ronald needs q cup of lemon juice.

Now Ronald has to make 24 cups of lemonade.

Let x be the number of cups of lemon juice needed to make 24 cups of lemonade.

Using the proportionality principle, we have:

\frac{6}{q} =\frac{24}{x}

x=\frac{24 q}{6}

x=4q

Therefore, to make 24 cups of lemonade, he needs 4q amount of lemon juice.

4 0
4 years ago
La figura mostrada se dividió en tres partes iguales para calcular su área.
levacccp [35]

Answer:

El área de un rectángulo de largo L y ancho A es: L*A.

El área de un triangulo de alto H y base B es: H*B/2.

Ahora veamos las tres figuras:

Rectángulo amarillo:

Largo = 40m

Ancho = 45m

Área = 40m*45m = 1800 m^2

Rectángulo blanco:

Largo = 40m

Ancho = 35m

Área = 40m*35m = 1400m^2

Triangulo azul:

Base = 35m

Alto = 50m

Área = 35m*50m/2 = 875m^2

Area total = 1800 m^2 + 1400m^2 + 875m^2 = 4075m^2

8 0
4 years ago
Ddrrrmkkkjuuhuigyygyuhuujiiiijjj
Irina18 [472]

Answer:

The answer is yeahhhhhh lol

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
What is 30 inches in feet
bixtya [17]
The answer would be 2.5 feet or 2 1/2


7 0
3 years ago
Read 2 more answers
Other questions:
  • What is the volume of a sphere with a diameter of 12 cm
    10·1 answer
  • The original price of a motorcycle was reduced by $275.If p = the motorcycle's original price in dollars, which algebraic expres
    5·2 answers
  • Anna types 160 words in 2 minutes. How many words does Anna type in 1 hour at this rate?
    11·2 answers
  • Solve 2 1/4 - 1 2/5=?
    11·1 answer
  • Why do we need math.
    14·2 answers
  • Construct the indicated confidence interval for the difference between the two population means. Assume that the two samples are
    5·1 answer
  • Hans will rent a car for the weekend. He can choose one of two plans. The first plan has an initial fee of $51.96 and costs an a
    9·1 answer
  • Help me with one and two plz
    9·1 answer
  • Which inequality is true
    8·2 answers
  • PLEASE HELP I"LL MARK BRAINLIEST!!!
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!