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Law Incorporation [45]
3 years ago
15

What is the best estimate of of the sum of the fractions?

Mathematics
2 answers:
Ronch [10]3 years ago
4 0
Let's add the fractions first and then we can estimate the sum.


= 31/4 + 17/3 + 8/18
change to common denominators

= 279/36 + 204/36 + 16/36
add numerators only

= 499/36 or 13 31/36 or 13.86


ANSWER: (B) 13 is the best estimate of the answer. Normally we round up to 14 with a number like 13.86, but since that is not a choice, we can estimate 13 as the answer.
Rom4ik [11]3 years ago
4 0

Answer:

b

Step-by-step explanation:

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3s+2t−3 =c<br> −7s−5t =4<br> ​
irinina [24]

Answer:

c=

−4

3

s−t+

−4

3

Step-by-step explanation:

Let's solve for c.

3s+2t−3c−7s−5t=4

Step 1: Add 4s to both sides.

−3c−4s−3t+4s=4+4s

−3c−3t=4s+4

Step 2: Add 3t to both sides.

−3c−3t+3t=4s+4+3t

−3c=4s+3t+4

Step 3: Divide both sides by -3.

−3c

−3

=

4s+3t+4

−3

c=

−4

3

s−t+

−4

3

3 0
3 years ago
A solid lies between planes perpendicular to the​ x-axis at x = -2 and x = 2. The​ cross-sections perpendicular to the​ x-axis b
icang [17]

Answer:

V = 128π/3 vu

Step-by-step explanation:

we have that: f(x)₁ = √(4 - x²);  f(x)₂ = -√(4 - x²)

knowing that the volume of a solid is  V=πR²h, where R² (f(x)₁-f(x)₂) and h=dx, then

dV=π(√(4 - x²)+√(4 - x²))²dx;  =π(2√(4 - x²))²dx ⇒

dV= 4π(4-x²)dx , Integrating in both sides

∫dv=4π∫(4-x²)dx , we take ∫(4-x²)dx and we solve

4∫dx-∫x²dx = 4x-(x³/3) evaluated -2≤x≤2 or too 2 (0≤x≤2) , also

∫dv=8π∫(4-x²)dx evaluated 0≤x≤2

V=8π(4x-(x³/3)) = 8π(4.2-(2³/3)) = 8π(8-(8/3)) =(8π/3)(24-8) ⇒

V = 128π/3 vu

8 0
3 years ago
In which quadrant does the point (13, 18) lie
Dahasolnce [82]

Answer:

Quadrant 1

Step-by-step explanation:

how I understood this is first understanding how a graph works. Once you understand that you can count 13 horizontal on the "X" Axis, then go 18 up on the "Y" axis. you should get a point in the upper left area and that area is called Quadrant 1. Say if 13 was negative instead of going horizontal east you would go horizontal west. And the point should end up in Quadrant 2. Any more questions feel free to ask me below.

8 0
2 years ago
Marta’s mother shared a funny video of their cat on the Internet. The total number of people who had viewed the video over the f
Yuliya22 [10]

Answer:

6,271

Step-by-step explanation:

For x = 20 days: f(20) = 33(1.3)^20 = 33(190.0496377) = 6,271

7 0
3 years ago
A telephone pole is 24 feet tall
mihalych1998 [28]

Answer:i honestly dont know just trying to get points

Step-by-step explanation:

3 0
3 years ago
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