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2 years ago

3x:10 = 5:2 calculate the value of x

Mathematics

1 answer:

djverab [1.8K]2 years ago

4 0

Answer:

x = $\frac{25}{3}$

Step-by-step explanation:

Express the ratio in equivalent fraction form, that is

$\frac{3x}{10}$ = $\frac{5}{2}$ ( cross- multiply )

6x = 50 ( divide both sides by 6 )

x = $\frac{50}{6}$ = $\frac{25}{3}$

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What is the solution of log2 (3x-7) =3

Valentin [98]

Answer:

x = 5

Step-by-step explanation:

because the log is base 2 you can remove the log by raing 2 to the power of each side:

$2^{log2 (3x-7)} = 2^{3}$

the 2 and log2 cancel leaving:

$3x-7 = 2^{3}$

this means we can now solve through simple algebra:

$3x-7 = 8\\3x = 8 + 7\\3x = 15\\3x/3 =15/3\\x = 5$

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3 years ago

Read 2 more answers

The ice skating rink rents 25 pairs of skates each hour. Write an expression that represents the pairs of skates rented in h hou

Nookie1986 [14]

175 pairs of skates are rented for 7 hours.

Step-by-step explanation:

Given,

Pairs of skated rented each hour = 25

Let,

Number of hours = h

Total pairs rented = T

T = Pairs rented each hour * number of hours

T = 25h

Evaluate the expression for 7 hours.

h = 7

$T=25(7)\\T=175$

175 pairs of skates are rented for 7 hours.

Keywords: multiplication, linear expression

Learn more about multiplication at:

#LearnwithBrainly

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3 years ago

Mikayla withdraws $20 on 4 different days durin the week.Find the total change in her account balance after the withdrawls.

Stells [14]

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7 0

3 years ago

Which of the following satisfies Ž -2 = 12

MA_775_DIABLO [31]

Answer:

Step-by-step explanation:

if z is 14 than z-2=12

because 14-2=12

7 0

2 years ago

A public swimming pool that holds 45,000 gallons of water is going to be drained for maintenance at a rate of 100 gallons per mi

crimeas [40]

Answer:

450 minutes

Step-by-step explanation:

Given

w = 45000 - 100t

Required

Determine how long it'll take to empty the pool

Being empty means there's no water in the pool.

So, we have to set w to 0 to get the value of t

i.e w = 0

Substitute 0 for w in w = 45000 - 100t

0 = 45000 - 100t

Collect Like Terms

100t = 45000

Divide through by 100.

t = 450

Hence, it'll take 450 minutes to empty the pool

8 0

2 years ago