All categories

3 years ago

Three times the difference of eight and twice a number is five times the number

Mathematics

1 answer:

Sophie [7]3 years ago

4 0

Answer:

3*( 8-2n)=5n

The number is 24/11

Step-by-step explanation:

three times

the difference of eight and twice a number

3*( 8-2n)

is five times the number

3*( 8-2n)=5n

To solve

Distribute

3*8 -3*2n = 5n

24 -6n = 5n

Add 6n to each side

24 - 6n +6n = 5n +6n

24 = 11n

Divide each side by 11

24/11 = 11n/11

24/11 =n

The number is 24/11

You might be interested in

Find the solution of the system of equations.<br> -5x+3y=3<br> -4x+3y=3

allochka39001 [22]

Answer:

your answer is (0,1)

Step-by-step explanation:

3 0

3 years ago

Find the product of x2 + 2x - 4 and 3x .

Mariulka [41]

Answer:x4+2x3+7x2+6x+12

Step-by-step explanation:

5 0

3 years ago

Dana invests £5000 for 4 years in a savings account She gets 2% per annum compound interest in the first year, then x% for 3 yea

Vanyuwa [196]

Answer:

£1,330.46

Hope this helps, mate!

Step-by-step explanation:

Hope this helps, mate! :)

6 0

2 years ago

Write the factors for each number Then decide whether the number is prime or composite

Lina20 [59]

Answer:

Step-by-step explanation:

If it have more than 2 divider its composite but its divider is only one and its self only its prime.1 isn't neither prime nor composite

8 0

3 years ago

4. A statistician working for the National Basketball Association supplies the television announcers with interesting statistics

Sonbull [250]

Answer: 0.038

Step-by-step explanation:

Given: Total games : n= 375

Number of games won by the team that was winning the game at the end of the third quarter. = 300

The proportion (p) of the team that was winning the game at the end of the third quarter: $p=\dfrac{300}{375}=0.8$

Critical z-value for 90% confidence: z* = 1.645

Margin of error = $z^*\sqrt{\dfrac{(1-p)p}{n}}$

The margin of error in a 90% confidence interval estimate of p $=1.645\sqrt{\dfrac{0.2\times0.8}{300}}\\= 1.645\times\sqrt{0.00053333}\\\\=1.645\times0.0231\\\\=0.0379995\approx$$0.038$

Hence, the required margin of error = 0.038

7 0

3 years ago