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Readme [11.4K]
3 years ago
12

Given:3x-4=8 prove x=4

Mathematics
1 answer:
anastassius [24]3 years ago
3 0

Hi!

Okay, so to prove that x = 4, all you have to do is insert 4 into the equation by replacing x with 4.

3x-4=8

3(4)-4=8

Now solve:

12-4=8

8=8

This is true, so x does equal 4.

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If a cordinate set (x,y) has two different scale factors this is a valid transformation..
mafiozo [28]
I’m going to say A.yes but I’m not sure sorry.
6 0
3 years ago
Leo's electric car needs to be recharged every 280 miles, so it should travel no more than 140 miles from the charger. If he
nydimaria [60]

Answer:

t ≤ 2.8

Leo can travel no more than 2.8 hours or 2 hrs, 48 min

Step-by-step explanation:

50t ≤ 140

t ≤ 140/50

t ≤ 2.8

4 0
3 years ago
Jake's water bill is $24.40 per month plus $2.20 per ccf (hundred cubic feet) of water. What is the maximum number of ccf Jake c
siniylev [52]

Answer:the maximum number of ccf Jake can use if he wants his bill to be no more than $58.00 is $15.3

Step-by-step explanation:

Let x represent the number of ccf of water that Jake uses in a month.

Jake's water bill is $24.40 per month plus $2.20 per ccf (hundred cubic feet) of water. This means that if she uses x ccf of water in a month, her total water bill would be

24.40 + 2.2x

Therefore, the maximum number of ccf Jake can use if he wants his bill to be no more than $58.00 would be

24.40 + 2.2x ≤ 58

2.2x ≤ 58 - 24.4

2.2x ≤ 33.6

x ≤ 33.6/2.2

x ≤ 15.3

4 0
4 years ago
What is the product? (x-5)(2x+3x-1)
Firlakuza [10]
I assume the first term of the trinomial is 2x^2, and you left out the exponent.

Multiply each term of the binomial by each term of the trinomial.
Then collect like terms.

(x - 5)(2x^2 + 3x - 1) =

= x * 2x^2 + x * 3x + x * (-1) - 5 * 2x^2 - 5 * 3x - 5 * (-1)

= 2x^3 + 3x^2 - x - 10x^2 - 15x + 5

= 2x^3 - 7x^2 - 16x + 5






5 0
3 years ago
Read 2 more answers
You are going on a field trip in a school bus. A special detector placed on one of the bus's tires counts the number of rotation
KIM [24]

First you need to find the circumference of the circle because 1 revolution is 1 length of the circumference. The formula for the circumference is C=2πr or C=πd, if the diameter is 1 meter then the circumference is π1 which is just π, and if it travelled 8000 rotations then that would mean it travelled 8000π, so it travelled 8000π in meters

5 0
3 years ago
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