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3 years ago

Find the value of x.

Mathematics

2 answers:

galina1969 [7]3 years ago

6 0

Answer:

its 90 bro whenever you see that square on a corner its always 90 degrees

Step-by-step explanation:

Elanso [62]3 years ago

3 0

Answer:

The answer is 90 degrees.

Whenever you see a square in the corner, it means it's 90 degrees.

It's also red, meaning that that is what you're trying to find.

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We know the following about the numbers a, b and c:

labwork [276]

Step-by-step explanation:

(a + b)² = 9

(b + c)² = 25

(a + c)² = 81

Taking the square root:

a + b = ±3

b + c = ±5

a + c = ±9

By adding these three equations together and dividing both sides by 2, we get the value of a + b + c.

Possible combinations for a + b + c such that the sum is greater than or equal to 1 are:

a + b + c = (-3 + 5 + 9)/2 = 11/2

a + b + c = (3 − 5 + 9)/2 = 7/2

a + b + c = (3 + 5 + 9)/2 = 17/2

3 0

3 years ago

The drama club is printing t-shirts for its members. The printing company charges a certain amount for each shirt plus a setup f

Setler [38]

Answer: $7.

Step-by-step explanation:

It is given that the printing company charges a certain amount for each shirt plus a setup fee of $40.

Let x be the cost of each t-shirt.

There are 21 students in the drama club. So, total cost of 21 t-shirts is

$\text{Total cos}=40+21x$

It is given that the t-shirt order costs a total of $187.

$40+21x=187$

$21x=187-40$

$21x=147$

Divide both sides by 21.

$x=\dfrac{147}{21}$

$x=7$

Therefore, the cost of each t-shirt is $7.

4 0

3 years ago

Thirty-three college freshmen were randomly selected for an on-campus survey at their university. The participants' mean GPA was

Ivan

Answer: $\pm0.1706$

Step-by-step explanation:

Given : Sample size : n= 33

Critical value for significance level of $\alpha:0.05$ : $z_{\alpha/2}= 1.96$

Sample mean : $\overline{x}=2.5$

Standard deviation : $\sigma= 0.5$

We assume that this is a normal distribution.

Margin of error : $E=\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

i.e. $E=\pm (1.96)\dfrac{0.5}{\sqrt{33}}=\pm0.170596102837\approx\pm0.1706$

Hence, the margin of error is $\pm0.1706$

7 0

3 years ago

Mr. Herkowitz owns a jewelry store. He marks up all merchandise 50 percent of

nasty-shy [4]

Answer:

$750

Step-by-step explanation:

5 0

3 years ago

What is the sum of the elements of (A and B) and not C?<br><br>

elena55 [62]

Answer:

Hi myself Shrushtee.

Step-by-step explanation:

Your answer is

• c 15

please mark me as brainleist

6 0

3 years ago