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katen-ka-za [31]

11 months ago

14

A choir has 3 spots open for altos, and 8 altos are interested in them. in how many ways can the open spots be filled? 24 56 112

336

1 answer:

Darya [45]11 months ago

5 0

Answer:

56

Step-by-step explanation:

combinations

C(8,3)

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Let a and b be positive integers. 23^a x 23^b

Ket [755]

Answer:

23 ^ ( a+b)

Step-by-step explanation:

23^a *23^b

Since the bases are the same, we can add the exponents

23 ^ ( a+b)

6 0

3 years ago

Read 2 more answers

Is Circumference of a circle same as area?

Klio2033 [76]

Answer:

The circumference of a circle is not the same as the area of the circle because the circumference represents the distance around the circle while the area represents the amount of space within the circle. Hope this helps.

5 0

2 years ago

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Shane set his watch 18 seconds behind, and it falls behind another 2 seconds every day. How many days has it been since Shane la

suter [353]

Answer:

14 days

Step-by-step explanation:

18 seconds on day 1

44-18=26

26/2=13 days

Day 1 +13 Additional days=14 days

7 0

2 years ago

The area of rectangle ABCD is 72 square inches. A diagonal of rectangle ABCD is 12 inches and the diagonal of rectangle EFGH is

luda_lava [24]

Answer:

The area of rectangle EFGH is $242\ in^{2}$

Step-by-step explanation:

For this problem I assume that rectangle ABCD and rectangle EFGH are similar

step 1

Find the scale factor

we know that

If two figures are similar, then the ratio of its corresponding sides is proportional, and this ratio is called the scale factor

Let

z ------> the scale factor

The scale factor is the ratio between the diagonals of rectangles

so

$z=\frac{22}{12}=\frac{11}{6}$

step 2

Find the area of rectangle EFGH

we know that

If two figures are similar, then the ratio of its areas is the scale factor squared

Let

z------> the scale factor

x -----> area of rectangle EFGH

y ----> area of rectangle ABCD

so

$z^{2}=\frac{x}{y}$

we have

$z=\frac{11}{6}$

$y=72\ in^{2}$

substitute and solve for x

$(\frac{11}{6})^{2}=\frac{x}{72}$

$\frac{121}{36}=\frac{x}{72}$

$x=\frac{121}{36}(72)$

$x=242\ in^{2}$

4 0

2 years ago

Open Ended Alexandra is working on a float for a parade She is making a sphere out of paper mache She knows the circumference of

iogann1982 [59]

Answer:

r=C2

Step-by-step explanation:

C=2r is the equation to find circumference

She needs to work backwards in this case, so:

r=C2

r=The circumference she knows x 2 x 3.14(or 3.14159265359)

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<h3><u><em>I would recommend writing/typing all of this(Especially if you need to show you work)!</em></u></h3>

<em><u>I hope this helped!</u></em>

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7 0

2 years ago