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Nady [450]
3 years ago
8

Sue wants to use mental math to find 7x53 write an expresión she Could use

Mathematics
1 answer:
asambeis [7]3 years ago
8 0
371 is the answer you welcome
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Compute the most rational way.
liraira [26]
1.=9900
2.=9.3
3.= x= 12.2155
Hope this helps
3 0
3 years ago
Need help on my math!!!!!!!
Natalka [10]
(x^2+5x-36)/(x^2-16)
=(x^2+9x-4x-36)/(x^2-4^2)
=x(x+9)-4(x+9)/(x+4)(x-4)
=(x-4)(x+9)/(x+4)(x-4)
=x+9/x+4
Hope this helps.
3 0
3 years ago
PLZ help on 1 and 2 ASAP have to turn in homework now.
dezoksy [38]
<h2>1.</h2>
  1. 180° . . . . linear angles are supplementary
  2. 3x . . . 180°
  3. 180°-3x
  4. PLM . . . . an exterior angle of a triangle is equal to the sum of the opposite interior angles
  5. 2x+72° . . . x
  6. 27°
<h2>2.</h2>
  1. CAB . . . . alternate interior angles where a transversal crosses parallel lines are congruent
  2. ACB . . . . the sum of angles of a triangle is 180°
  3. 3x . . . 180°
  4. 27°
3 0
3 years ago
Please solve Questions - 18 , 20 , 21 <br>Show proper work. Thank-you!
Ymorist [56]
18. If f(x)=[xsin πx] {where [x] denotes greatest integer function}, then f(x) is:
since x denotes the greatest integers which could the negative or the positive values, also x has a domain of all real numbers, and has no discontinuous point, then x is continuous in (-1,0).

Answer: B]

20. Given that g(x)=1/(x^2+x-1) and f(x)=1/(x-3), then to evaluate the discontinuous point in g(f(x)) we consider the denominator of g(x) and f(x). g(x) has no discontinuous point while f(x) is continuous at all points but x=3. Hence we shall say that g(f(x)) will also be discontinuous at x=3. Hence the answer is:
C] 3

21. Given that f(x)=[tan² x] where [.] is greatest integer function, from this we can see that tan x is continuous at all points apart from the point 180x+90, where x=0,1,2,3....
This implies that since some points are not continuous, then the limit does not exist.
Answer is:
A]


3 0
3 years ago
The price of some houses in a neighborhood are shown below: House Price A $120,000 B $130,000 C $140,000 D $150,000 E $1,110,000
MissTica
In my opinion I would use the mean. But the options that are given I would choose answer A. But I'm not 100% sure.
8 0
3 years ago
Read 2 more answers
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