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crimeas [40]
3 years ago
13

Find the value of expression the a3−3a2+5a−7 by substituting a=3.

Mathematics
1 answer:
8090 [49]3 years ago
6 0

Answer:

21 is answer

Step-by-step explanation:

Find the value of expression the a3−3a2+5a−7 by substituting a=3.

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True or false A triangle with sides having measures of 3, 4,
Fofino [41]

Answer:

False

Step-by-step explanation:

A commonly known Pythagorean Triple for a right triangle is a 3-4-5 triangle.  Something so close will not be a perfect right triangle, but may be close.

6 0
3 years ago
Read 2 more answers
Write an equation of the circle with center (5, -7) and radius 9.
vagabundo [1.1K]

Answer:

(x - 5)² + (y + 7)² = 81

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

Here (h, k) = (5, - 7) and r = 9, thus

(x - 5)² + (y - (- 7))² = 9², that is

(x - 5)² + (y + 7)² = 81 ← equation of circle

6 0
3 years ago
A right rectangular prism has a length of 214 cm, width of 8 cm, and height of 2012 cm.
Amiraneli [1.4K]
The volume is 214*8*2012
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4 0
3 years ago
A rectangle is 3 feet longer than it is wide . if the perimeter is 30 feet , find the area in square feet .
noname [10]

Answer:

Hey

Step-by-step explanation:

I beleve you answer is 10 because 3 time 10 equals 30 and the question sais "3 times longer"

5 0
4 years ago
Proofread 12 page in 6 minutes how many minutes will it take to proofread 96 pages
serg [7]
You proofread 2 pages per minute so you divide 96 by 2 to get 48 minutes which is the answer
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