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Leviafan [203]
3 years ago
13

Help Where is the first error in this proof?

Mathematics
1 answer:
ivanzaharov [21]3 years ago
6 0
He subtracted the 29fron the 30
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When 4 is added to three times of a number, the answer is the same as subtracting 2 from the number. What is the number ?
Orlov [11]

Answer:

- 3

Step-by-step explanation:

let n be the number , then

3n + 4 = n - 2 ( subtract n from both sides )

2n + 4 = - 2 ( subtract 4 from both sides )

2n = - 6 ( divide both sides by 2 )

n = - 3

The number is - 3

7 0
3 years ago
Please help!
IgorC [24]

Answer:

(1,-4) is in quadrant IV.

Step-by-step explanation:

3 0
3 years ago
∠A and \angle B∠B are vertical angles. If m\angle A=(7x-27)^{\circ}∠A=(7x−27) ∘ and m\angle B=(3x+29)^{\circ}∠B=(3x+29) ∘ , then
mote1985 [20]

Answer:

x = 14

Step-by-step explanation:

Vertical angles are congruent , then

7x - 27 = 3x + 29 ( subtract 3x from both sides )

4x - 27 = 29 ( add 27 to both sides )

4x = 56 ( divide both sides by 4 )

x = 14

7 0
3 years ago
Identify the constant in the following expression 9x+7
Aleonysh [2.5K]

Answer:

7

Step-by-step explanation:

because it is the only number without a variable or something next to it.


3 0
3 years ago
Read 2 more answers
if joe ran 390 feet, how many yards did joe run? a. 130 yards b. 210 yards c. 39 yards d. 11,270 yards
Julli [10]
A. There are 3 feet per yard. 

so... 390/3=130 yards 
5 0
3 years ago
Read 2 more answers
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