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4 years ago

How can i do my homework

Mathematics

1 answer:

ivanzaharov [21]4 years ago

7 0

Get your materials ready
Estimate the time needed
Today,not tomorrow

These are the tips

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Help on this question?

mr_godi [17]

Answer:

Step-by-step explanation:

3 0

3 years ago

Two vertical posts stand side by side. One post is 8 feet tall and the other is 17 feet tall. If a 24 foot wire is stretched bet

lianna [129]

Answer:

The distance between the posts is $3\sqrt{55}$ feet.

Step-by-step explanation:

In the attached figure, let DB and AC be the posts and let AD be the wire attached to the top of the posts.

BC is the distance between the posts and we need to find BC.

Note that BC = DE

Also, EC = DB = 8m and AE = AC - EC = 17 - 8 = 9 m.

Now, in the right triangle ADE,

$AD^{2} =AE^{2} +DE^{2}$

$24^{2} =9^{2} +DE^{2}$

$DE^{2} =24^{2} -9^{2}$

= (24+9) (24-9)

= 33(15)

= (3 × 11) × (3 × 5)

$DE=3\sqrt{55}$

Since DE = BC,

$BC=3\sqrt{55}$

Hence, the distance between the posts is $3\sqrt{55}$ feet.

7 0

3 years ago

Can someone help please I need this asap

son4ous [18]

Answer:

PART:A

$10_P_4=5040$

PART:B

$6_C_2=15$

PART:C

$6_C_2=15$

Step-by-step explanation:

PART:A

When the four officers are chosen than the number of ways of doing this is:

$10_P_4$

since we have to choose 4 officers and also they need to be arranged according to their ranks.

Hence, the numbers of ways doing so is:

$10_P_4=\dfrac{10!}{(10-4)!}\\\\=\dfrac{10!}{6!}\\\\=10\times 9\times 8\times 7\\\\=5040$

PART:B

Now we have to choose 2 members out of the remaining 6 members so the we have to use combination since we have to just choose the members and do not have to rank them or in short we can say we do not have to arrange them.

Hence, the number of ways doing this is:

$6_C_2=\dfrac{6!}{2!\times (6-2)!}\\\\=\dfrac{6!}{2!\times 4!}\\\\=15$

Hence, the number of ways of doing this is: 15.

PART:C

Now this process of doing so is also same as the above.

Hence, the number of ways of doing so is: 15.

8 0

3 years ago

Drag the tiles to the correct boxes to complete the pairs. Match each cross section with its perimeter. a cross section parallel

mafiozo [28]

The match up are:

64 inches : cross-section, cube, 16 inches
26 inches : right rectangular prism, 10x 3 x 14 inches
48 inches : cube with 12-inches edges
34 inches : rectangular prism, 5x12x4 diagonal of 13 inches

<h3>What is a prism?</h3>

A prism is known to be a kind of 3-dimensional shape that has two similar shapes that are known to be facing each other.

Note that:

Right rectangular prism == 10x 3 x 14 inches

Since the cross-section is known to be parallel to the base, then:

P = 10 + 3 + 10 + 3

= 26 inches

For cube that has 12-inches edges

We say that;

P = 12 + 12+ 12 + 12

= 48 inches

For rectangular prism that has 5x12x4 diagonal of 13 inches

We say that:

P = 13 + 4 + 13 + 4

= 34 inches

For cross-section cube that 16 inches,

we say that:

P = 16 + 16 + 16 + 16

= 64 inches.

Learn more about prism from

brainly.com/question/12737501

#SPJ1

4 0

2 years ago

the vertex of the parabola below is at the point (5,-3). which of the equations below could be the one for this parabola?

lapo4ka [179]

Answer: ty for the points

Step-by-step explanation:

x+-3(y+3)2+5

6 0

3 years ago