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3 years ago

WILL GIVE BRAINLEST!!!!!!!!!!!!!! ANSWER ASAP!!!!!!!!!!!!

Mathematics

1 answer:

Natasha_Volkova [10]3 years ago

3 0

Answer:

Step-by-step explanation:

 Its because 1.5x number of dried × x =? So we determine that its 18 but no otsnot 18, 12 not the point rather its 12,15.

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A lifeguard fills a pool with water at a constant rate. After 1/2 hour, 1/3 of the pool is filled.

Romashka-Z-Leto [24]

Answer: 2/3 of an hour.

Step-by-step explanation: The constant rate of the lifeguard filling the pool is 1/3 of the pool every 1/2 hour. If she fills it for an hour, she'll get 2/3 of the pool filled. Therefore, it'll take the lifeguard 1 hour to fill the pool 2/3 of the way.

Hope this helps! :)

4 0

2 years ago

Read 2 more answers

PLEASE explain this, I'm so lost. 25 points! What is the area of the base of the pyramid? Enter your answer in the box. Express

stepladder [879]

To find the area of the triangle shown we have to find the length of a and the base.

a can be found using the sine function. Recall sin = (opp)/(hyp)

Here $sin 60 = \frac{a}{8} 
$
$\frac{ \sqrt{3} }{2}= \frac{a}{8} 
$
$2a=8 \sqrt{3}$
$a=4 \sqrt{3}$

The base can be found using the sin of 30 degrees as this is a 30-60-90 right triangle.
$sin30= \frac{b}{8}$
$\ \frac{1}{2} = \frac{b}{8}$
$b=4$

The area of the triangle in the picture is given by $A=( \frac{1}{2} )bh= (\frac{1}{2})(4)( \frac{ \sqrt{3} }{2} )= \sqrt{3}$ .

The base of the pyramid is a hexagon which can be divided into 6 triangles each of which is double the area of the one we just found. So the area of the base = 2(area of the triangle we found)(6) = $12 \sqrt{3}$

5 0

3 years ago

Read 2 more answers

Y = 2x + 1 y = 4x - 1

masha68 [24]

Your answer is x=1 , y=3........

3 0

4 years ago

Read 2 more answers

3. A full-price ticket for a college basketball game costs $2.50, and a student ticket costs $1.75. If

Dennis_Churaev [7]

Let's say x = full price tickets

Let's say y = student tickets

We can write two equations:

From "585 tickets were sold" we can make the equation:

x + y = 585

And from "Full-price ticket is $2.50 and student ticket is $1.75 and total receipts is $1,217.25"...we can make the equation:

2.50x + 1.75y = 1,217.25

So now we can use substitution to find our answer...since we only have to find how many student tickets...we will solve the first equation for x so we can plug that into the 2nd equation to solve for y.

x + y = 585

x + y - y = 585 - y

x = 585 - y

Now we plug that into our 2nd equation: 2.50 (585 - y) + 1.75y = 1217.25

Distribute your 2.50

1462.5 - 2.50y + 1.75y = 1217.25

Add the y's: 1462.5 - 0.75y = 1217.25

Subtract 1462.5 from both sides:

1462.5 - 0.75y - 1462.5= 1217.25 - 1462.5

-0.75y = -245.25

Divide both sides by -0.75:

y = -245.25/-0.75

y = 327

There were 327 student tickets :)

3 0

4 years ago

To be able to go on a trip to South America, Salma decides to save for 2 years. She opens a savings account with $700 . The acco

never [62]

Answer:

(a) I'm pretty sure it's $71.75

(b) the total would be $771.75 if i calculated it right...

6 0

3 years ago