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
attashe74 [19]
3 years ago
10

What is the sum of (1.3 × 10-7) and (-3.8 × 10-3)?

Mathematics
1 answer:
pav-90 [236]3 years ago
8 0
1.3 x 10⁻⁷ + -3.9 x 10⁻³

1.3 x 10⁻⁷ = 0.00000013
-3.9 x 10⁻³ = -0.0039

-  0.00390000
+ <u>0.00000013   </u>
 - 0.00389987 ⇒ -3.8 x 10⁻³  CHOICE D.

You might be interested in
Calculate the area of the square shown below (HARD)
sergey [27]
Check the picture below.

recall that in a square, all sides are equal, so if we make b = a, then we get that for one side, also recall that the area of a rectangle is length*width, so in this case,

\bf \stackrel{\textit{area of the square}}{\stackrel{length}{5\sqrt{2}}\cdot \stackrel{width}{5\sqrt{2}}}\implies 25(\sqrt{2})^2\implies 25\cdot 2\implies 50

7 0
2 years ago
A help would be greatly appreciated! 
dalvyx [7]
The tree was approximately 40.8ft tall.

You use the equation, a^2+b^2=c^2.
12^2 + 39^2 = x^2, add the results of 12^2 and 39^2 to make 1665 = x^2. You can take the positive root of both sides, 3√185, and it equals 40.80441152, which is rounded to 40.8.
7 0
3 years ago
Is 3 liters per 60 seconds a unit rate
Sauron [17]
No its not a unit rate

6 0
3 years ago
Determine the direction that this parabola<br> opens:<br> y = -5x2 - 10x - 13
Pie

Answer:

sorry cant :(

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
(PLS HURRY ASAP 100 POINTS)
Sophie [7]

Answer:

  • D) 0.3125

====================

Total number of outcomes is 16, count of all outcomes.

Number of outcomes with 3 or more tiles is 5:

  • HTTT, THTT, TTHT, TTTH, TTTT

The probability is:

  • P = favorable outcomes / total outcomes
  • P(at least 3 tails) = 5/16 = 0.3125

Correct choice is D.

6 0
1 year ago
Other questions:
  • 70/b+5a-2b<br><br> Evaluate the expression when a=3 and b=10
    9·2 answers
  • Logan went shopping at the mall. He spent $75.43 on shoes, $25.14 for a t‐shirt, and $43.85 on a denim jacket. How much did he s
    6·1 answer
  • One solution of x^2-64=0 is 8. what is the other solution?
    12·2 answers
  • The sum of two numbers is 892. One of the numbers is 363. What is the other number?​
    12·2 answers
  • A hockey player gets 2 goals for every 13 shots. At this rate, how many goals will he make if he
    5·2 answers
  • Can I please get help on my assignment!
    15·1 answer
  • The lot is `41` feet wide. The dividers are each `6` feet wide. Calculate how wide each space should be.
    12·1 answer
  • suppose sin(theta)=2/5, use the trig identity sin^2(theta)+cos^2(theta)=1 and the trig identity tan(theta)=sin(theta)/cos(theta)
    8·1 answer
  • An office store pays a whole price of $120 for a laser printer and sells it for $174. What is the pecent mark up
    11·1 answer
  • The height of a projectile launched upward at a speed of 25 meters/second from a height of 70 meters is given by the function h(
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!