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Brut [27]
3 years ago
8

Need some help on the lower question. Thanks

Mathematics
1 answer:
Lubov Fominskaja [6]3 years ago
3 0

180 = 60 + (180-a) + (180-b)

120 = 180 - a + 180 - b

-240 = -a - b

b - 240 = -a

b = 240 - a

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A person standing in the ground throws a ball onto a flat rooftop. The ball rolls around for several seconds. Then the ball fall
natali 33 [55]

Answer:

  • Graph D

Step-by-step explanation:

According to the question, the correct graph is D.

It's not A because, the ball is thrown after some pause and the ball doesn't roll on the roof, falls immediately.

It's not B or C because the ball goes up after reaching the roof but should fall down.

6 0
2 years ago
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
Which classification correctly describes the polygon?
sergiy2304 [10]
Answer is (A) because it is concave and it has 8 sides
5 0
3 years ago
George ate 4 slices of pizza if this was 25% of the slices at the dinner table how many slices were there at the table to start
Lisa [10]
There were 16 slices

5 0
3 years ago
Which equation describes the same line as y- 6 = -4(x + 1)?
just olya [345]

Answer:

B. y=-4x+2

Step-by-step explanation:

y-6=-4x-4

y=-4x-4+6

y=-4x+2

8 0
3 years ago
Read 2 more answers
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