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IrinaVladis [17]
3 years ago
8

Ed is doing a survey of popular colors for cars for a school report. He decides to take a sample by sitting near a busy intersec

tion and noting the colors of the cars as they go by him. Ed counts 23 black cars, 9 red cars, 17 blue cars, 25 white cars, and 21 silver cars during 20 minutes of watching. How many more white and blue cars are there than silver and red cars?
Mathematics
1 answer:
pentagon [3]3 years ago
5 0
For the answer to the question above, 
I'll show the solution for my answer just to give you clarity. It will look like this,
<span>(25+17 )- (9+21)
</span>
So the answer to your question is 12.
I hope my answer helped you. Have a nice day!
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Which of the following inequalities are true?
yarga [219]

Answer:

i think its B or D sorry if I'm wrong

3 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
Find the area of the regular polygon. Round to the nearest tenth if<br> necessary.<br> 7.5<br> 5.1
zalisa [80]

Answer:

that will be 25 if you put 30 in the thing

8 0
2 years ago
Write your answer as a whole number or a decimal
Lynna [10]

Answer:

minutes/mile

minutes=7.5-2.5

=55

55/10

5.5 minutes per mile

5 0
2 years ago
Find the approximate side length of a square game board with an area of 123 inches to the second power
aleksklad [387]
61.5 or 61 and one half
4 0
3 years ago
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