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Katarina [22]
3 years ago
14

If carlos did some work and got 3x + 2x - 6 = 24 what mistake did he make

Mathematics
1 answer:
Makovka662 [10]3 years ago
4 0

Carlos made the mistake that he did not combine like terms (3 x and 2 x) properly and did not use addition property of equality.

<u>Step-by-step explanation:</u>

Carlos did the work as 3 x + 2 x - 6 = 24

We need to find his mistake that he made in above given.

Here, he did not add the like terms (3 x and 2 x)

             3 x + 2 x = 5 x

Therefore, his work should be

             5 x  - 6 = 24

Also, he did not use addition property of equality. It means the equation remains same even though the same number gets added on both sides. It would be

                          5 x  - 6 = 24

                                 + 6 = + 6

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

                           5 x = 30

Dividing 30 by 5, we get answer as '6'. Hence,

                            x=\frac{30}{5} = 6

So, stated the above two are the mistakes found in carlos work.

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Help pls need answer asap
Varvara68 [4.7K]

Answer:

Carl traveled 281.25 km by bus and 1,618.75 km by plane.

Step-by-step explanation: v1 = 60 km/h average speed by bus to Toronto

v2 = 700 km/h average speed by plane to Winnipeg

d = 1,900 km the total distance traveled

t = 7 h total traveling time

t1 = the time of the travel by bug

t2 = the time of the travel by plane

t = t1 + t2 the total time

d1 = the distance traveled by bus

d2 = the distance traveled by plane

d = d1 + d2 the total distance

Since average speed = distance/time we have time = distance/avg.speed

t1 = d1/v1 that is t1 = d1/60

t2 = d2/v2 that is t2 = d2/700

Plug the above values into t1 + t2 = t.

We have the following system of equations:

d1/60 + d2/700 = 7

d1 + d2 = 1900

.......

Click here to see the step by step solution for 'd1' and 'd2'

.......

d1 = 281.25 km

d2 = 1,618.75 km

Carl traveled 281.25 km by bus and 1,618.75 km by plane.


7 0
2 years ago
A car dealership had $114,000 in average monthly sales. If you made 30% of all the sales, what is your total sales? help me
Tcecarenko [31]

Answer:

I think it's $34,200

Step-by-step explanation:

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6 0
3 years ago
What is the step by step of<br> 1/ cos x csc^2 x = sin x/ cot x
Effectus [21]

Answer:

what is the step by step of 1/ cos x csc^2 x = sin x/ cot x

Step-by-step explanation:

1

.

csc

x

=

1

sin

x

2

.

cot

x

=

cos

x

sin

x

Given,

1

−

cos

x

sin

x

=

csc

x

−

cot

x

Simplify the right side.

csc

x

−

cot

x

=

1

sin

x

−

cos

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sin

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=

1

−

cos

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sin

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valentinak56 [21]

Answer:

1,800, 19

Step-by-step explanation:

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2 years ago
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Setler79 [48]

1.  The graph is a parabola.

2. The parabola opens up, because there's no negative number in front of (x-5)^2.

3. The vertext is (5,-1), because of the vertex form.

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The range is (-1, infinity) or { y | y > -1 }.

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