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
slava [35]
4 years ago
15

Add or subtract. Write your answer in scientific notation. 6.4 x 10^3+ 1.4 x 10^4+ 7.5 x 10^3

Mathematics
1 answer:
ycow [4]4 years ago
7 0

Answer:

2.79 * 10^4

Step-by-step explanation:

6.4 x 10^3+ 1.4 x 10^4+ 7.5 x 10^3

The exponents need to be the same

6.4 x 10^3+ 14 x 10^3+ 7.5 x 10^3

Add the numbers

6.4 + 14+ 7.5 =27.9

Multiply by the exponent

27.9 * 10 ^3

But this is not in scientific notation

Move the decimal one place to the left and add one to the exponent

2.79 * 10^4

You might be interested in
Problem page the sum of two numbers is 47 . the larger number is 17 more than the smaller number. what are the numbers?
user100 [1]
Smaller number = X
Larger Number = X + 17

47 = X + (X+17)
47 = 2x + 17
47 - 17 = 2x
30 = 2x
X = 15
3 0
3 years ago
WILL MARK BRAINLIEST AND 15 POINTS
omeli [17]

Answer:

x = 4

Step-by-step explanation:

You may want to make everything into the same fraction to make the math easier. Because x/4 is the smallest fraction, make all of the other numbers with x match it.

3x = 12x/4, x/2 = 2x/4.

Now, 12x/4 - x/4 = 11x/4.

11x/4 + 9 = 1 - 2x/4 - 5. Now add x to one side to solve x.

13x/4 +9 = 1 - 5

13x/4 + 9 = -4

13x/4 = -13 (multiply by four on each side)

13x = -52

x = 4

6 0
3 years ago
Read 2 more answers
Mary is having a birthday party. She invited 14 friends. Mary made 190 cookies. She wants to share them at her party but also wa
trasher [3.6K]
Answer: 12

Explanation: 190- 22 =168. 168/14 = 12
8 0
3 years ago
What is the equation of the circle?
hammer [34]

Answer:

the 3rd option

Step-by-step explanation:

trust

4 0
2 years ago
Find the area of a kite with diagonals of 14 cm and 10 cm​
Amanda [17]

Answer:

70

Step-by-step explanation:

Area of a kite, is to multiply the two diagonals and divide by 2:

p(diagonal) * q(diagonal) / 2

pq / 2.

P = 14

Q = 10.

(14 * 10) / 2

140/2

70

3 0
4 years ago
Other questions:
  • If a is a negative rational number and b is a positive rational number, which of the following must be true?
    10·1 answer
  • I NEED HELP (I’m sooo dumb lol)
    13·1 answer
  • Solve equation. What is the solution set<br> -4(z-2)+4=21-(z-3)
    6·1 answer
  • Dalton loses weight at a rate of 4% per week. the following function represents his weight loss after x weeks. W(x)=2(1.04)^x. W
    6·1 answer
  • What is the surface area of the figure?
    13·1 answer
  • a car is traveling at a constant velocity of 60km/h east for 4 hours. choose the correct statement about the acceleration of the
    8·2 answers
  • Find the value of x for each following
    11·2 answers
  • A store sells a box of highlighters that contains 40% yellow, 30% blue, 20% pink, and 10% green highlighter. What is the probabi
    5·1 answer
  • 1,200 divided by 45=
    13·1 answer
  • What is the math answer?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!