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makvit [3.9K]
3 years ago
8

Need help with simplifying expressions

Mathematics
2 answers:
fgiga [73]3 years ago
6 0
The answer iss D.
..
Verizon [17]3 years ago
5 0

Answer:

D. 52a^2 + 26

Step-by-step explanation:

6( 4a^2 + 11a) - 13( 5a - 2) - a + 4( 7a^2 )

24a^2 + 66a - 65a + 26 - a + 28a^2

52a^2 + 26

hope this helps!

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ratelena [41]
The answer is A
r = 1
5 0
3 years ago
Read 2 more answers
0.00098421, in standard notation to scientific notation
irinina [24]

Answer:Scientific Notation:9.8421*10^-4

Step-by-step explanation:

3 0
3 years ago
What is the volume of a right circular cylinder in terms of Pi if its height measure 6 inches and the radius of its base is 2 in
docker41 [41]
V=hpir^2
r=2
h=6

v=6pi2^2
v=6pi4
v=24pi in³
5 0
3 years ago
A car travels 2 1/3 miles in 3 1/2 minutes at a constant speed. Write an equation to represent the car travels in miles and minu
Korvikt [17]

Answer:

d = 0.666t , where d is in miles and t is in minutes.

d = 39.94h, where d is in miles and h is in hours.

Step-by-step explanation:

A car travels 2\frac{1}{3} = 2.33 miles in 3\frac{1}{2} = 3.5 minutes at a constant speed.

Let the relation between the distance (d) traveled by car in miles after traveling t minutes is d = kt ......... (1)

Now, putting d = 2.33 miles and t = 3.5 minutes in the above equation we get,

2.33 = 3.5k

⇒ k = 0.666 (Approx.)

So, the equation (1) becomes d = 0.666t. (Answer)

Let us assume that the relation between the distance (D) traveled by car in miles after traveling h hours is d = Kh ............ (2)

Now, putting D = 2.33 miles and T = 3.5/60 = 0.058 hours in the above equation, we get

2.33 = 0.058K

⇒ K = 39.94

So, the equation (2) we get, d = 39.94h (Answer)

3 0
3 years ago
the double number line shows that in 3 seconds an ostrich can run 63 meters. how far can the ostrich run in 5 seconds
inna [77]

Answer: 105 meters

Step-by-step explanation:

Ostrich's running rate is 63 meters/3 seconds. This can be reduced to 21 meters/second (21 m/s).

(21 m/s)*(5 sec) = 105 meters

5 0
3 years ago
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