All categories

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

You might be interested in

Pls hurry I need help

sergejj [24]

Answer:

-403.2

Step-by-step explanation:

multiply the numbers together. a negative x a postive is a neg

4 0

2 years ago

Read 2 more answers

From a random sample of 58 businesses, it is found that the mean time the owner spends on administrative issues each week is 21.

zzz [600]

Answer: (20.86, 22.52)

Step-by-step explanation:

Formula to find the confidence interval for population mean :-

$\overline{x}\pm z^*\dfrac{\sigma}{\sqrt{n}}$

, where $\overline{x}$ = sample mean.

z*= critical z-value

n= sample size.

$\sigma$ = Population standard deviation.

By considering the given question , we have

$\overline{x}= 21.69$

$\sigma=3.23$

n= 58

Using z-table, the critical z-value for 95% confidence = z* = 1.96

Then, 95% confidence interval for the amount of time spent on administrative issues will be :

$21.69\pm (1.96)\dfrac{3.23}{\sqrt{58}}$

$=21.69\pm (1.96)\dfrac{1.7}{7.61577}$

$=21.69\pm (1.96)(0.223221)$

$\approx21.69\pm0.83$

$=(21.69-0.83,\ 21.69+0.83)=(20.86,\ 22.52)$

Hence, the 95% confidence interval for the amount of time spent on administrative issues = (20.86, 22.52)

7 0

2 years ago

4/11x10/8<br> What is the answer

aliya0001 [1]

Answer:

5/11

Step-by-step explanation:

4/11 × 10/8

= 40/88

= 5/11

8 0

2 years ago

given triangle abc is similar to triangle efg, with medians cd and gh respectively, ac=9, eg=6, cd=x+2, gh=2x-4. find the length

Leno4ka [110]

Answer:

X= 9//

Step-by-step explanation:

abc = efg

ac + cd = eg + gh

9 + (x+2) = 6 + (2x-4)

9 - 6 = 2x-4 - (x+2)

3 = x - 6

3+6 = x

9 = x//

3 0

2 years ago

What is a quotient of 3/10÷8/5 out of these forms 1. 3/16 2. 4/9 3. 15/80 4. 24/50

Zanzabum

Answer:

option 1

Step-by-step explanation:

$\frac{3}{10}$ ÷ $\frac{8}{5}$

• leave the first fraction

• change division to multiplication

• turn the second fraction 'upside down'

= $\frac{3}{10}$ × $\frac{5}{8}$ ( cancel 5 and 10 by 5 )

= $\frac{3}{2}$ × $\frac{1}{8}$

= $\frac{3}{16}$

8 0

1 year ago