I know this is like the 700th question I've asked​
I know this is like the 700th question I've asked​ - 1

Answers

Answer 1
Answer:

Answer:

BC = 15

Step-by-step explanation:

Because of parallel lines, AD and BE, triangles ADC and BEC are similar.

In similar triangles, the lengths of corresponding sides are proportional.

AC/BC = DC/EC

We see that AC = AB + BC = 3 + BC

Also, DC = DE + EC = 2 + 10 = 12

(3 + BC)/BC = 12/10

(3 + BC)/BC = 6/5

Cross multiply.

5(3 + BC) = 6BC

15 + 5BC = 6BC

15 = BC

BC = 15


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Find the volume of a cube whose diagonal measures 36√3 cm.

Answers

Answer:

46656 cm^3

Step-by-step explanation:

If a cubes diagonal measures you can solve for its sidelength by creating a triangle. Visualize the diagonal as the hypotenuse of our triangle inside the cube. Then, one of the legs would be the side of the cube itself, and the other leg would be the diagonal of the bottom side of the cube. Knowing this is a cube, we can call each side s. If each side is s, then the diagonal of the bottom face is s√(2)( this is a special triangle property, 45-45-90 triangle.) Then we know our triangle is a right triangle, so we can use the Pythagorean theorem to solve for s.

s^(2) + (s√(2) )^(2) = (36√(3))^2

Solve this equation for s.

s^(2) + 2s^(2) = 3888

3s^(2) = 3888

s^(2) = 1296

s = 36

Since we now found the side length of the cube, we can find its volume by cubing the side length:

s^3 = (36)^3 = 46656cm^3

ANSWER CORRECTLY AND YOU WILL GET BRAINLIEST WORTH ITWrite a proportion to find how many points x a student needs to score on a test worth 80 points to get a test score of 80%

Answers

64

80               80

thats how you havw to put it

Answer:

80/100 is 80%

Step-by-step explanation:

Admission to an amusement park is $10 for children and $15 for adults. On Saturday 1,300 people enter the park and $17,250 is collected. How many children and adults entered the park?

Answers

simple
suppose number of adults entered park on Saturday be = x
 number of children entered park on Saturday  be = y 
so we get equation 
  x + y =1300
 x= 1300 - y { equation 1}

now for each children ticket is 10$ and y number of children visited park on Saturday . so children collection on Saturday = 10y
 similarly adult collection =15x
15x+10y=17250
divide all by 5
3x+2y=3450
put x = 1300 -y from equation 1 here
3(1300-y) +2y=3450
3900 - 3y +2y = 3450
3900 - y =3450 
3900-3450 = y
450= y
so number of children visited park on saturday = 450
number of adult visited park on saturday = 1300 - 450 =850

Which best describes the range of the function f(x) = 2(3)x?y > 0

y ≥ 0

y > 2

y ≥ 2

Answers

The range of the function f(x) : 2.3^(x) is y > 0.

The correct option is (A)

What is range?

The definition of range is the set of all possible values that the function will give when we give in the domain as input.

Given function is : 2.3^(x)

If we draw the graph for this, then we can see that the horizontal asymptote is 0.

So,  the range is real numbers higher than 0.

Hence, the range should be y > 0.

Learn more about this concept here:

brainly.com/question/3952743

#SPJ2

The range of the function f(x) = 2(3)^x is y > 0

Given a mean of 9 and a standard deviation of 2.8, what is the z-score of the value 11 rounded to the nearest tenth?–0.9

–0.7

0.9

0.7

Answers

The answer is 0.7. Since the formula of the z-score is the difference of the score (x) and the mean divided by the standard deviation (SD)...
 
z= [ (x-mean)/SD ] 

You simply substitute the values given.

z = (11-9)/2.8
z=2/2.8
z=0.714

Then round it to the nearest tenth...

z- = 0.7

Solve for x (6x+1)+(6x+5)=180

Answers

x
=

7


4249
12
,

7
+

4249
12

Answer:

x = 14.5

Step-by-step explanation:

I don't understand the 1st answer, so I'll have a go.

If you've written it correctly, wouldn't you just add everything up?  The parentheses are irrelevant the way it's written:

(6x + 1) + (6x + 5) = 180 becomes:

6x + 1 + 6x + 5 = 180  Combine like terms:

12x + 6 = 180

12x = 174

x = 14.5

But since it doesn't come out to be a whole number, maybe you've written the question wrong?  Could it be:

(6x + 1)(6x + 5) = 180

36x^(2) + 36x + 6 = 180

36x^(2) + 36x - 174 = 0

Then you could apply the quadratic formula.

You'd get x = 1.75 or - 2.75.

Those are weird numbers, so I suspect your question isn't really the product of those two expressions.