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3 years ago

hello anyone pls help me I'm so stuck I'm scared pls help me I promise I give many points and I'll give the brainliest:(

Mathematics

2 answers:

r-ruslan [8.4K]3 years ago

5 0

Answer:

It is basically a question of probability so

Probability =<u> Number of event</u>

Number of sample space

Number of sample space = 12

Since the event needed is a prime number so first list the numbers 1 to 12 which is (1,2,3,4,5,6,7,8,9,10,11,12) so the prime numbers there are (2,3,5,7,11) so therefore the number of event will be 5

THEREFORE:

p = $\frac{5}{12}$

Step-by-step explanation:

Genrish500 [490]3 years ago

3 0

Answer:

2 or3 ,5,7,11 I suppose please correct if wrong

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What is the slop of the line contains points (1,1) and (5,-5) write a answer as friction as simplest from (hint 2/1 should be si

lozanna [386]

Answer:

$-\frac{3}{2}$

Step-by-step explanation:

Given parameters:

Points = (1,1) and (5,-5)

Unknown:

Slope = ?

Solution:

The slope of the a line is the ratio of the rise of a line to its run.

Slope = $\frac{y_{2} - y_{1} }{x_{2} - x_{1} }$

x1 = 1

y1 = 1

x2 = 5

y2 = -5

Insert the parameters and solve;

Slope = $\frac{-5 - 1}{5-1}$ = $\frac{-6}{4}$ = $-\frac{3}{2}$

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3 years ago

15(d + 7) = 4(d - 4) + 11d has how many solutions?

svp [43]

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4 years ago

Solve the equation 4 x - 6 = 6- 2x

Greeley [361]

Answer:

x=2

Step-by-step explanation:

4x-6=6-2x

(add 2x and 6 to both sides)

6x=12

(divide by six)

x=2

Double Check:

4(2)-6=2

6-2(2)=2

4(2)-6=6-2(2)

4 0

3 years ago

Read 2 more answers

The area of triangle ABC is 3√2 square inches. Find the measure of the acute angle, A, if b = 9 meters and c = 2 meters.

taurus [48]

Answer:

$A\approx 28^{\circ}$

Step-by-step explanation:

Please find the attachment.

We have been given that area of triangle ABC is 3√2 square inches.

$\text{Area}=\frac{1}{2}\text{Base}\times \text{height}$

We know that area of triangle an be found using trigonometry as:

$\text{Area}=\frac{1}{2}\times c\times h$

$\text{sin}(A)=\frac{h}{9}\\h=9\cdot \text{sin}(A)$

$3\sqrt{2}=\frac{1}{2}\times 2\times 9\cdot \text{sin}(A)$

$3\sqrt{2}=9\cdot \text{sin}(A)$

$9\cdot \text{sin}(A)=3\sqrt{2}$

$\text{sin}(A)=\frac{3\sqrt{2}}{9}$

$\text{sin}(A)=\frac{\sqrt{2}}{3}$

Now, we will use inverse sine to find the value of angle A as:

$A=\text{sin}^{-1}(\frac{\sqrt{2}}{3})$

$A=28.1255057^{\circ}$

$A\approx 28^{\circ}$

Therefore, the measure of angle A is approximately 28 degrees.

3 0

3 years ago

Describe the possible side lengths of the 3rd side of the triangle given the lengths of the 2 other sides?

Sindrei [870]

Heya !

Using a theoram about triangles ,

Given a triangle ∆ABC, the sum of the lengths of any two sides of the triangle is greater than the length of the third side ,

Also , the length of third side always greater than absolute difference of the other two sides ,

Let the third side be x ,

So , x < 9 + 8 and x > 9 - 8
x < 17 and x > 1

Hence , x ∈ [ 2 , 17 ] inch.

Above case is true for any triangle , be it scalene , Isosceles , Right-angled ...

As , for Isosceles , the third side can be 8 or 9 inches ,
For scalene , all values in the above range satusfies ,

For right angled triangle , we have 2 cases ,

Case 1 : Third side is the hypotenuse
Then , x = √(9²+8²) = √145 = 12.0415 inch.

Case 2 : Third side is not the hypotenuse
Then , x = √(9²-8²) = √17 = 4.1231 inch.

Hope it helps you ! :)

8 0

4 years ago

Read 2 more answers

hello anyone pls help me I'm so stuck I'm scared pls help me I promise I give many points and I'll give the brainliest:(​

hello anyone pls help me I'm so stuck I'm scared pls help me I promise I give many points and I'll give the brainliest:(