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4 years ago

Need question for 5 and 6

Mathematics

1 answer:

vazorg [7]4 years ago

8 0

Answer:

werftghj

Step-by-step explanation:

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Someone help me with this

Yuki888 [10]

Nine is the correct answer

7 0

3 years ago

The san paulo community swimming pool can be filled in 12 hr if water enters through a pipe alone or in 30 hr if water enters th

Nuetrik [128]

Alright, lets gets started.

If water enters through a pipe alone, swimming pool can be filled in 12 hr.

Or say, in 12 hrs, swimming pool can be filled with help of pipe.

It means in 1 hr, the part of swimming pool filled = $\frac{1}{12}$ (For pipe only)

Similarly, with hose only, , in 1 hr, the part of swimming pool filled = $\frac{1}{30}$

So, water is coming from both, pipe and hose , then in 1 hr, the part of pool filled will be = $\frac{1}{12} + \frac{1}{30}$

Suppose in x hrs, with both supplies, pipe and hose, pool is filled.

Means

$\frac{1}{12} + \frac{1}{30} = \frac{1}{x}$

making common denominator

$\frac{30}{360} + \frac{12}{360} = \frac{1}{x}$

$\frac{30 + 12}{360} = \frac{1}{x}$

$\frac{42}{360} = \frac{1}{x}$

Flipping

$\frac{360}{42} = x$

$x = \frac{60}{7}$

Means 8.57 hrs : Answer

Hope it will help :)

7 0

3 years ago

Laura tiene láminas y 40 están repetidas si coloca 5 en cada página de su álbum ¿cuántas páginas completará laura?

bulgar [2K]

Answer:

Step-by-step explanation:

Dado que Laura tiene 40 láminas repetidas, si coloca 5 de estas láminas en cada página de su álbum, para determinar cuántas páginas de su álbum podrá Laura completar se debe realizar el siguiente cálculo:

40 / 5 = Cantidad de páginas

8 = Cantidad de páginas

Así, colocando 5 láminas por página, Laura podrá completar 8 páginas de su álbum.

8 0

3 years ago

Please help, it would be very much appreciated

hodyreva [135]

Answer:

153.86 units squared.

Step-by-step explanation:

given

diameter (d) = 14

radius (r) = 14/ 2 = 7

Area of the circle

= πr²

= 3.14 * 7²

= 3.14 * 49

= 153.86 units squared

Hope it will help :)❤

6 0

3 years ago

Read 2 more answers

Betsy is saying for a bird cage. She saves $1 the first week, $3 the second week, $9 the third week, and so on. All together how

Zigmanuir [339]

Answer:

Betsy will save $121 in 5 weeks.

Step-by-step explanation:

We can see that Betsy's savings are 3 times the saving of her last week. We can see that this is an geometric sequence as 1,3,9,..

To find the sum of our geometric sequence we will use $S_{n}=a\cdot \frac{1-r^{n}}{1-r}$ , where n is number of terms we are taking sum of, a is first term of sequence and r is common ratio of the sequence.

$S_{5}=1\cdot \frac{1-3^{5}}{1-3}$

$S_{5}=\frac{1-243}{-2}$

$S_{n}=\frac{-242}{-2}=121$

Therefore, Betsy will save $121 in 5 weeks.

8 0

3 years ago