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Ray Of Light [21]
3 years ago
6

How do you know that substitution gives the answer to a system of equations?

Mathematics
1 answer:
Cerrena [4.2K]3 years ago
3 0
It gives the answer to a system of equations because it explains it
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Find the average rate of change for fx) = x2 – 3x – 10 from x = 4 to x = 6.
Leviafan [203]

Answer:

7

Step-by-step explanation:

The rate of change is defined as

f(x2) - f(x1)

--------------------

x2-x1

x2 = 6

f(6) = x^2 – 3x – 10 = 6^2 -3*6 -10 = 36 - 18-10=8

x1 = 4

f(4) = x^2 – 3x – 10 = 4^2 -3*4 -10 = 16 - 12-10=-6

Substitute the values into the expression

8 -  -6

--------------------

6-4

8+6

------------

2

14/2= 7

6 0
3 years ago
The volume of the polyhedron is ______ yd3.
DochEvi [55]

Answer:

122,850 yd³

Step-by-step explanation:

The polyhedron is a right triangle prism

Area of the right triangle prism = ½*a*c*h

a = 91 yd

c = 60 yd

h = 45 yd

Volume = ½*91*60*45

= 122,850 yd³

4 0
3 years ago
125cm to 87.5cm<br> URGENT<br> I WILL GIVE BRAINLIEST TO CORRECT ANSWER
Studentka2010 [4]

Answer:

30% decrease is the answer

7 0
3 years ago
Pls help it’s gonna be graded and im lost
slega [8]

Answer:

Im not sure but it might be the fourth one.

Step-by-step explanation:

if its wrong im SOOO sorry :(

7 0
3 years ago
Pierre sold 340 tickets for a concert. balcony tickets cost $5 while tickets for the lower floor cost $10. if pierre sold $2,700
Misha Larkins [42]

Answer:

A:200

Step-by-step explanation:

$2,700÷10=$270-$70


7 0
3 years ago
Read 2 more answers
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