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stellarik [79]
3 years ago
14

(4+5)²-(-2)²×(13+7) ayúdenme es para hoy​

Mathematics
2 answers:
ser-zykov [4K]3 years ago
8 0
(9)^2 - (-4) • (20)
81 - (-80)
161
ExtremeBDS [4]3 years ago
7 0
The answer is 1 i think
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A cylinder has volume 78 cm. What is the volume of a cone with the same radius and height?
Dimas [21]

Answer:

26 cm³

Step-by-step explanation:

A cone is 1/3 the volume of a cylinder with the same dimensions

78/3= 26

Volume= 26 cm³

5 0
3 years ago
Stephanie just redecorated her bedroom. She wants to paint her door green but needs to know the surface area of the door to see
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3 years ago
Help pls i need help on this last math area equation. and explain also.
BlackZzzverrR [31]

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Step-by-step explanation:c

5 0
3 years ago
Read 2 more answers
Equation for given circle. A(4,7) is at center top of circle and B(7,4) is at center right hand side
oee [108]
Note:
The equation for a circle with center at (h,k) and radius r is
(x-h)² + (y-k)² = r²

For the specified circle,
h=4, h=7.

From the diagram shown below, the radius, r, is determined from the Pythagorean Theorem as
r² = 3² + 3² = 18

Therefore the equation for the circle is
(x - 4)² + (y - 7)² = 18

Answer:  (x - 4)² + (y - 7)² = 18

5 0
4 years ago
Wich method would be the simplest way to solve the system 7X+5y=19 -7X-2y=-16. A- graphing B- substitution C- elemination D- dis
inysia [295]
C- elemination or reduction
 Method of elimination or reduction
 Adding two equations is to obtain a new equation whose right (left) member is the sum of the right (left) members of the equations that are added together.
<span> 7X+5y=19
 -7X-2y=-16. 
</span> Adding two equations
 3y=3 ---> y=1
 then
 7x+5(1)=19
 7x=19-5
 x=14/7=2 
4 0
3 years ago
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