Make them both improper fractions.
77/10 - 19/5

Give them common denominators (multiply the second fraction by 2)
77/10 - 38/10

Subtract
39/10 = 3 9/10

8 0

3 years ago

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You and your friends decide to rent some studio time to make a CD. Big notes studio rinse for $100 plus $60 per hour. Great soun

Orlov [11]

About 3.8 hours, if asking for a whole number round to 4

8 0

3 years ago

Is there another number that has the prime factorization of 2x2x2x2x2x2x5x5x5x5x5x5?Explain.

NeX [460]

You have to put the number and count how many there are. Something like this.

7 0

3 years ago

Solve for k 4.5+1.5k=18−3k

sertanlavr [38]

Answer:

$\boxed{ \bold{ \huge{ \boxed{ \sf{k = 3}}}}}$

Step-by-step explanation:

$\sf{4.5 + 1.5k = 18 - 3k}$

Move 3k to left hand side and change it's sign

Similarly, move 4.5 to right hand side and change it's sign

$\longrightarrow{ \sf{1.5k + 3k = 18 - 4.5}}$

Collect like terms

$\longrightarrow{ \sf{4.5k = 18 - 4.5}}$

Subtract 4.5 from 18

$\longrightarrow{ \sf{4.5k = 13.5}}$

Divide both sides by 4.5

$\longrightarrow{ \sf{ \frac{4.5k}{4.5} = \frac{13.5}{4.5} }}$

Calculate

$\longrightarrow{ \sf{k = 3}}$

Hope I helped!

Best regards! :D

5 0

3 years ago

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