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2 years ago

If the sum of a number and four is tripled the result is eight less than twice the number

Mathematics

2 answers:

Drupady [299]2 years ago

5 0

Answer:

The number is -20.

Step-by-step explanation:

If x is the number, then 3(x+4)=2x-8.

3x+12=2x-8

x=-20

kiruha [24]2 years ago

4 0

Answer:

- 20

Step-by-step explanation:

if the number if x then 3(X+y 4= 2X-8: 3X+12= 2x-8

x = -20

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P=s1+s2+s3 solve for s3

tresset_1 [31]

P=s1+s2+s3

Move +s1 to the other side. Sign changes from +s1 to -s1

P-s1=s1-s1+s2+s3

p-s1=s2+s3

Move s2 to the other side. Sign changes from s2 to -s2

p-s1-s2=s2-s2+s3

p-s1-s2=s3

Answer: p-s1-s2=s3

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2 years ago

The sum of the reciprocal of a number and 5/6 is 13/12. Find the number.

ddd [48]

$\frac1x+\frac56=\frac{13}{12}\ \ \ \ |\cdot12\\ 12\cdot\frac1x+12\cdot\frac56=12\cdot\frac{13}{12}\\ \frac{12}x+\frac{60}6=13\\ \frac{12}x+10=13\ \to \ \frac{12}x=3\ \to \ \boxed{x=4}$

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3 years ago

Read 2 more answers

Aquí está mejor <br> Cómo simplificar esta expresión

Ludmilka [50]

Answer:

359/4

Decimal: 89.75

Step-by-step explanation:

6 0

2 years ago

Dont know the answer pls help :(

Luba_88 [7]

Answer:

x=3

Step-by-step explanation:

7x-3=18

7x=18+3

7x=21

x=3

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2 years ago

Please help with this question. I need an answer ASAP!! I need help! I don't understand this!

Romashka-Z-Leto [24]

Answer: 42°

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

HJ is an angle bisector of ∠IHK so

∠IHJ ≅ ∠KHJ ⇒ m∠IHJ = m∠KHJ

3a + 6 = 5a - 18

6 = 2a - 18

24 = 2a

12 = a

∠IHJ = 3a + 6

= 3(12) + 6

= 36 + 6

= 42

8 0

3 years ago