Find the unknown sizes of angles in the following figure (I need step by step explanation and i might give brainliest):​

Let V be the volume of the tank. The inlet pipe fills the tank at a rate of

V / (5 hours) = 0.2V / hour

and the outlet pipe drains it at a rate of

V / (8 hours) = 0.125V / hour

With both valves open, the net rate of water entering the tank is

(0.2V - 0.125V ) / hour = 0.075V / hour

If t is the time it takes for the tank to be full, then

(0.075V ) / hour • t = V

Solve for t :

t = V / ((0.075V ) / hour)

t = 1/0.075 hour

t ≈ 13.333 hours

Answer:

qno 16= 1/2

qno17 = 417 are the answers........

Answer:

Joanna will use 1 gallon of milk in each bowl.

Step-by-step explanation:

Divide 6 into 6 bowls to get 1

Answer:

X=12°

y=60°

Step-by-step explanation:

75=6x+3

x=12°

y=180-(45+75)

y=60°

Answer:

845

Step-by-step explanation:

I think that's what it's asking??

Answer:

845

Step-by-step explanation:

We are looking for a new number which is 120 less than 965.

We will get the new number by subtracting 120 from 965.

We write it down as:

965-120=845

And finally the solution for: What number is 120 less than 965?

is 845

Have a good day :)

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Answer:

ummm?

Step-by-step explanation:

Answer:

Something

Step-by-step explanation:

I have no idea what u just asked

Using the hypergeometric distribution, it is found that there is a 0.0455 = 4.55% probability that both light bulbs failed the test.

The bulbs are chosen without replacement, and this is why the hypergeometric distribution is used to find the probability.

Hypergeometric distribution:

[tex]P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}[/tex]

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

The parameters are:

In this problem:

The probability that both failed the test is P(X = 2), thus:

[tex]P(X = x) = h(x,N,n,k) = \frac{C_{k,x}C_{N-k,n-x}}{C_{N,n}}[/tex]

[tex]P(X = 2) = h(2,12,2,3) = \frac{C_{3,2}C_{9,0}}{C_{12,2}} = 0.0455[/tex]

0.0455 = 4.55% probability that both light bulbs failed the test.

A similar problem is given at https://brainly.com/question/24826394

Answer:

Step-by-step explanation:

Answer:

3) 7x + 4

6) 4 + 5x

9) 8y

12) 4y

14) 23 + 4x

15) 8x + 14

Step-by-step explanation:

Answer:

75 cents

Step-by-step explanation:

We can use a ratio to solve

8 lemons      1 lemon

------------- = ------------

6 dollars        x dollars

Using cross products

8x = 6*1

8x = 6

Divide by 8

8x/8 = 6/8

x = .75

One lemon costs .75

Answer:

15 box of cookies =$9

1 box of cookie = $9/15=$0.6

Answer:

.6

Step-by-step explanation:

9÷15 = 0.6

Answer:

Step-by-step explanation:

Answer:

Understand unit rate. The unit rate is a special type of ratio in which the two separate measurements are compared and expressed as a quantity of one.

Look at the data. The problem must have two terms, and you must be asked to determine how much of one term exists per unit of the other term.

Rewrite the data as a division problem.

Step-by-step explanation:

Answer:

82.96 people/km^2

Step-by-step explanation:

people / square km

3.70 x 10^9        

----------------- =    

4.46 x 10^7      

3.70 x 10^2

----------------

 4.46

0.8295... x 100 = 82.959641 or rounded 82.96

Answer:

Four possible numbers

-4

-32

-2

-10

Four numbers that are not possible

100

120

20

10

Step-by-step explanation:

I choose the 4 possible numbers because if you add a negative to a negative, the answer will always be a negative. However if you added a positive like 100 to -3, the answer wouldn't be negative so that's why I chose those numbers.

Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day!

Answer:

it's 22 degrees ..............

Answer:

Step-by-step explanation:

Cylinder volume:

Substitute the values of r and h:

________

[tex] \: [/tex]

V = [tex]\pi[/tex] × r² × h

V = [tex]\pi[/tex] × 3² × 8

V = [tex]\pi[/tex] × 9 × 8

V = 72[tex]\pi[/tex]m³✔

Answer:

Step-by-step explanation:

Answer

im struggling too ;c

Step-by-step explanation:

This shows that there are 141 men and 21 women in the meeting

Let the number of men present be x

Let the number of women present be y

If the total number of students present in the meeting is 162, hence;

x + y = 162 ............ 1

If  there were 15 men more than 6 times the women, then;

x = 6y + 15 ...................2

Substitute equation 2 into 1:

6y + 15 + y = 162

7y + 15 = 162

7y = 162 - 15

7y = 147

y = 21

Recall that x = 6y + 15

x = 6(21) + 15

x = 126 + 15

x = 141

This shows that there are 141 men and 21 women in the meeting

Learn more here: https://brainly.com/question/13805464

Answer:

Step-by-step explanation:

Considering the situation given, it is found that:

At the null hypothesis, we test if they average the same amount of trouble hours as last year, that is, of 2000 trouble hours, thus:

[tex]H_0: \mu = 2000[/tex]

At the alternative hypothesis, we test if this amount has increased, that is:

[tex]H_1: \mu > 2000[/tex]

A similar problem is given at https://brainly.com/question/23531534

Answer:

A

Step-by-step explanation:

It's going to get smaller

Explanation:

The rule used is [tex]\left(\frac{a}{b}\right)^{-c} = \left(\frac{b}{a}\right)^{c}[/tex]

That rule says to go from a negative exponent to a positive exponent, we apply the reciprocal of the fraction.

So,

[tex]\left(\frac{1}{3}\right)^{-5} = \left(\frac{3}{1}\right)^{5} = 3^5[/tex]

Answer:

Step-by-step explanation:

The answer is 10

Answer:

Your answer is [tex]\sqrt{52}[/tex] or 7.21110255093...

Step-by-step explanation:

[tex]A^{2} + B^{2} = C^{2}[/tex]

[tex]4^{2} + 6^{2} = C^{2}[/tex]

16 + 36 = [tex]C^{2}[/tex]

[tex]C^{2}[/tex] = 52

C = [tex]\sqrt{52}[/tex]

Answer:

m<BEC=80º

Step-by-step explanation:

a line is 180º total

180-70-30=80

Answer:

BEC = 80°

Step-by-step explanation:

Supplementary = 180°

70 + 30 = 100

180 - 100 = 80

Hope this helps! Pls give brainliest!