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Svetach [21]
3 years ago
15

I really need help on rate changes!!

Mathematics
1 answer:
mrs_skeptik [129]3 years ago
4 0

Answer: The third and fourth problem are linear

Step-by-step explanation:

3rd problem follows a pattern

X  6  5   4  3

Y 21 15 10 6

6x3+3=21

5x3=15

4x2+2=10

3x2=6

Problem 4 follows a pattern as well

X value goes up 1, Y value goes up 4

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Please can someone help me with this question?
zhannawk [14.2K]

Answer:

a = 16 π cm²      Exact answer

a = 50.24 cm²       Decimal approximation

Step-by-step explanation:

Radius of the circle

16/2 = 8

Area of the circle

a = πr²

a = π4²

a = 16 π cm²      Exact answer

a = 16 * 3.14

a = 50.24 cm²       Decimal approximation

7 0
3 years ago
Which property best justifies why the two expressions below are equivalent?<br> 3(m + 5) = 3m + 15
malfutka [58]
The distribution property is the best justification.
4 0
3 years ago
Read 2 more answers
Please help meeeeee with this
aleksandrvk [35]
Alright, let's do all of these (though this is a bit long).
1.
The constant is 1.8. All other values are coefficients to variables, which as the name implies will change.
2.
1 hour is 60 minutes, 1 minute is 60 seconds.
So, 4.2 *60 *60 = 15120 seconds.
3.
<span>−5x−4(x−6)=−3-5x-4(x-6)=-3
Let's move all x to one side, and all other numbers to another.
-5x-4(x-6)=-3-5x-4(x-6)=-3
x can be any value you want, if you actually solve this you'll only end up with -3 = -3, which is correct, of course.
Let me show you:
</span><span>−5x−4(x−6)=−3-5x-4(x-6)=-3
+5x +4(x-6)        +5x +4(x-6)
-3 = -3
The value of x is irrelevant, then. X can be any real number.
4.
I'm going to assume it was an error in printing with this? If not please correct me.
m=a+2b(or b2)
subtract 2b from each
a=m-2b
(This question seems kind of odd. We should probably address this in the comments.)
5.
</span><span>5(x−2)<−3x+6
Move all x to one side, numbers to other.
5x-10<-3x+6
+3x     +3x
    +10      +10
8x<16
/8
<span>x < 2
</span>6.
y-3=3(x-5)
alright, to find zeros set one variable to zero and solve
x first
-3=3x-15
+15    +15
3x=12
/3
x=4
x-int is (4,0)
now y
</span>y-3=3(0-5)
y-3=-15
+3     +3
y=-12
so y-int is (0,-12)
i've got to sleep now so i'll do the rest tomorrow. Sorry for the incomplete answer.

8 0
3 years ago
What are the first three terms of the sequence a1 = 3 and an = 2(an-1)^2? I thought the answer was 3,18,32 but that's not an opt
7nadin3 [17]
A1=3
a2=2(3^2)=18
a3=2(18^2)=648
3 0
3 years ago
Read 2 more answers
Plz help will mark brainlest
mart [117]
He will do about 16 rotations
6 0
3 years ago
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