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
kompoz [17]
3 years ago
5

Zachary adds 26.45 g to 2.55 g. How many significant figures should his answer have?

Mathematics
2 answers:
Liono4ka [1.6K]3 years ago
8 0
<em><u>26.45 + 2.55 = 29 . . . but with correct sig figs . . . the answer is . . . 29.00 . . . i.e. [4] sig figs</u></em>

 . . . why? . . . because even though 26.45 has [4] sig figs & 2.55 has [3] sig figs, the number of sig figs to the right of the decimal are the critical sig figs . . . and there are [2] sig figs to the right of the decimal, so the answer/result can also beas precise as having [2] sig figs to the right of the decimal as well.

siniylev [52]3 years ago
8 0

Answer:

C. 4

Step-by-step explanation:

You might be interested in
***WORTH 60 POINTS*** solve for y if x = 5 . [y = -7x -6]
zheka24 [161]

Answer:

y = -41

Step-by-step explanation:

y= -7x -6

y= -7(5) -6

y= -35 -6

y= -41

4 0
2 years ago
Please help! I get how to do the first part I just don't get how to do the second part.
xz_007 [3.2K]

9514 1404 393

Answer:

  WX = 33

  (x, y) = (2, 10)

Step-by-step explanation:

The hash marks tell you WX is a midline, so has the measure of the average of the two bases.

  WX = (PQ +SR)/2 = (27 +39)/2 = 66/2

  WX = 33

__

The hash marks also tell you ...

  PW = WS

  y +4x = 18 . . . . . . substitute the given expressions

and also

  QX = XR

  2y +x = 22 . . . . . substitute the given expressions

__

If you solve the first equation for y, you get ...

  y = 18 -4x

Substituting that into the second equation gives ...

  2(18-4x) +x = 22

  36 -7x = 22 . . . . . . . simplify

  14 = 7x . . . . . . . . . . . add 7x-22 to both sides

  2 = x . . . . . . . . . . . . divide by 7

  y = 18 -4(2) = 10 . . . find y using the above relation

The values of x and y are 2 and 10, respectively.

__

My favorite "quick and dirty" way to solve a set of linear equations is using a graphing calculator. It works well for integer solutions.

7 0
3 years ago
What is the constant variation of y=5x
loris [4]

Answer:

It's 5.

Step-by-step explanation:

Because a constant is a number next to the variable.

4 0
3 years ago
Read 2 more answers
Based on the graph shown to the right, whose phones cost varies directly with the amount of time spent talking?
Lena [83]

Answer:

B

Step-by-step explanation:

Given 2 quantities that vary directly, then the graph must pass through the origin.

Nikiya's graph is the only one to do this ⇒ B



8 0
3 years ago
Read 2 more answers
Apply the distributive property to create an equivalent expression.<br><br> ​ <br> 1/2 (2a−6b+8) = ?
katen-ka-za [31]

Answer:

a-3b+4

Step-by-step explanation:

1/2 (2a−6b+8) =

=1/2*2a-1/2*6b+1/2*8

=a-3b+4

5 0
3 years ago
Read 2 more answers
Other questions:
  • What is the measure of XY?
    12·2 answers
  • Intersecting lines are _____ coplanar. Sometimes Never Always
    13·1 answer
  • A sphere has a diameter of 24 units. What is its volume in cubic units?
    14·1 answer
  • Jonah and three of his friends are splitting the dinner bill equally among theme selves. There total bill came to be $86 before
    6·1 answer
  • The total cost of running a business is based on its expenses
    11·1 answer
  • In the year 2000, the height of an apple tree was
    11·2 answers
  • How do I find the perimeter of similar triangles? (Geometry)
    12·1 answer
  • What is the perimeter of the rectangle below?
    13·2 answers
  • Is -2/3x - 2 equivalent to -2/3x + (-2)?
    10·2 answers
  • A department store is having a sale.All jeans are on sale for 15% off.if a pair of jeans originally cost $115.00,what is the sal
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!