All categories

2 years ago

Please help. What is the value of x?

Mathematics

1 answer:

lorasvet [3.4K]2 years ago

6 0

9514 1404 393

Answer:

5.625

Step-by-step explanation:

The angle bisector divides the sides proportionally.

x/7.5 = 3/4

x = 7.5(3/4) . . . . multiply by 7.5

x = 5.625

You might be interested in

Can someone help me with this excercises plz:

nignag [31]

Answer:Either

(

−

)

(

)

−

depending upon what you meant by

"sum of 9 and k minus 17"

(the resultant value would be the same, but the expression would be different).

Step-by-step explanation:

4 0

2 years ago

Find the value of x help me pls

goldenfox [79]

Answer:

x=12

Step-by-step explanation:

Since the angle needs to add up to 90, you will first need to subtract 30 from 90. This will leave you with 60. Next you will divide 60 by 5 which will give you 12 which is the answer.

6 0

2 years ago

Read 2 more answers

A child takes a nap averaging three hours and get an average of 12 hours of sleep at night . Nap time and night time sleep can e

algol13

That should be all of them. Hope it helps

8 0

2 years ago

A and b are positive integers and a–b = 3. Evaluate the following:

yulyashka [42]

1/27

125

Step-by-step explanation:

Given that,

a - b = 3

9^(1/2b) /3^a = 3^(2/2b) /3^a

= 3^b/3^a

= 3^(b-a)

= 3^(-3)

= 27^(-1)

= 1/27

27^(1/3b) /9^(1/2a) = 3^(3/3b) /3^(2/2a)

= 3^b/3^a

= 3^(b-a)

= 3^(-3)

= 27^(-1)

= 1/27

125^(1/3a) /25^(1/2b) = 5^(3/3a) /5^(2/2b)

= 5^a/5^b

= 5^(a- b)

= 5^3

= 125

6 0

3 years ago

A test consists of 100 multiple choice questions, each with five possible answers, only one of which is correct. Find the mean a

TEA [102]

Answer: Mean = 20 and standard deviation = 4

Step-by-step explanation:

Let x represents the success of getting the correct answer.

Here, the total number of trials(n) = 100

The probability of getting the correct answer, p = 1/5

Thus, the mean of the number of correct answer,

$\mu_x= np$

$\mu_x= 100\times 1/5$

$\mu_x= 20$

Now, the standard deviation, $\sigma_x= \sqrt{n\times p\times (1-p)}$

$\sigma_x= \sqrt{100\times 1/5\times 4/5}$

$\sigma_x= \sqrt{16}$

$\sigma_x= 4$

Thus, First option is correct.

6 0

3 years ago