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
umka21 [38]
3 years ago
8

IDEK if anyone's on this site anymore, but here's my problem (I guess Ill do 20 points):

Mathematics
1 answer:
VMariaS [17]3 years ago
3 0
To be divisible by 63, it must be divisible by both 7 and 9, since 7x9 = 63.  Factor the expression, simplify, and see if both 7 and 9 are factors, which would make it divisible by both 7 and 9. (163 - 83)(43 + 23) = [(24)3 - (23)3] [(22)3 + 23] = (212 - 29)(26 + 23) = [29(23 - 1)] [23(23 + 1)] = [29(8 - 1)] [23(8 + 1)] = 29(7) 23 (9) = 63(212) It is a multiple of 63, and hence divisible by 63.
You might be interested in
What would you see at the wedding of Betty Crocker and the pillsbury dough boy
Mrrafil [7]
Cake
Biscuits
Sugar
Flour
3 0
3 years ago
A 12​-tooth gear on a motor shaft drives a larger gear having 42 teeth. If the motor shaft rotates at 700 ​rpm, what is the spee
nata0808 [166]

Answer:

203 rpm

Step-by-step explanation:

The speed of the larger gear can be calculated using the following equation:

v = \omega*R  

<u>Where</u>:

ω: is the angular velocity of the motor = 700 rpm

R: is the gear ratio

The gear ratio is the following:

R = \frac{n_{(a)}}{n_{(b)}}  

<u>Where:</u>

n(a): is the number of teeth on the small gear = 12 teeth  

n(b): is the number of teeth on the larger gear = 42 teeth

The gear ratio is:

R = \frac{12}{42} = 0.29

Now, the speed of the larger gear is:

v = \omega*R = 700 rpm*0.29 = 203 rpm

Therefore, the speed of the larger gear is 203 rpm.

I hope it helps you!                        

3 0
3 years ago
N=3, zeros 4 and 2i, f(2)=-48 find nth degree polinomonal function
enot [183]
The degree is 3, the zeros are; 4, 2i, -2i and a point is (-48, 2) 

For zeros; 2i, -2i <-- complex conjugates, always in pairs 

\frac{c}{a}=(2i)(-2i) &#10;
= -4(i²=-1)
=5 

\frac{b}{a}=-(2i+(-2i))
=0 

Therefore the equation is; a(x^{2}+5) <-- b value is zero 

Rewrite the equation with all zeros; 

a(x-4)(x²+5)=f(x) <-- put in coordinates of the points to find the value of x
a(2-4)(2²+5)=-48 
a(2)(9)=-48 
a=-48/18 
a=-8/3 

The final polynomial function is; (-8/3)(x-4)(x²+5)=f(x)

Hope I helped :)
5 0
3 years ago
Please answer the following:
serg [7]
The sum of all interior angles in a polygon is
180(n - 2), where n = the number of sides in the polygon.

now, notice this figure above, it has 5 sides, namely is a PENTAgon, so the sum of all its interior angles is 180( 5 - 2), or 540, therefore

\bf (4x)~+~(3x+15)~~+~~(4x-25)~~+~~(3x+25)~~+~~(2x-3)=540&#10;\\\\\\&#10;16x+12=540\implies 16x=528\implies x=\cfrac{528}{16}\implies x=33
3 0
3 years ago
Which of the binomials below is a factor of this trinomial?
Margaret [11]

4x^2+20x-24=4(x^2+5x-6)=4(x^2+6x-x-6)\\\\=4[x(x+6)-1(x+6)]=4(x+6)(x-1)\\\\Answer:\ A)\ x-1

6 0
3 years ago
Other questions:
  • 4.13×10^-8×0.04×10^5
    5·1 answer
  • Write each fraction as the sum of two unit fractions<br><br> 3/4, 5/12, 7/10<br><br> Please Help!
    9·1 answer
  • Can someone plz help me with those two I’m being timed !!!
    10·1 answer
  • Based on the information, determine which sides of quadrilateral ABCD must be parallel m angle A= 67°, m angle b = 120°, m angle
    12·1 answer
  • 283838383838382828 + 8383838388828299383838383838288888 = <br><br><br> A <br> B<br> C<br> D
    6·1 answer
  • Slope from two points
    11·1 answer
  • Whats the answer 6+1
    14·2 answers
  • Using long divison convert the following mixed number into its decimal equivalent -3 2/3 ​
    5·1 answer
  • +5 when
    5·2 answers
  • PLEASE HEPP IM STUCK
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!