All categories

3 years ago

I need help with number 42. i am very confused on what to do

Mathematics

1 answer:

Svetach [21]3 years ago

4 0

Find a decimal between 1/2 and find a repeating decimal between 1/3

You might be interested in

Earth's radius is approximately 6400 km. What is the surface area & volume of the earth?

Tamiku [17]

Answer:

$SA=514,457,600\ km^{2}$

$V=1,097,509,546,667\ km^{3}$

Step-by-step explanation:

step 1

Find the surface area

we know that

the surface area of a sphere is equal to

$SA=4\pi r^{2}$

substitute

$SA=4 \pi (6,400)^{2}$

$SA=163,840,000 \pi\ km^{2}$

substitute the approximate value of pi (3.14)

$SA=(3.14) (163,840,000)$

$SA=514,457,600\ km^{2}$

step 2

Find the volume

The volume is equal to

$V=(4/3)\pi r^{3}$

substitute

$V=(4/3)(3.14) (6,400)^{3}$

$V=1,097,509,546,667\ km^{3}$

8 0

2 years ago

Read 2 more answers

2 1.3.1 Study: Multiplying Binomials Drag the tiles to the blanks. Distribute. - 4(x - 2) =

ehidna [41]

Answer:

I am not entirely sure what you are asking here but if I am right then the answer is -4(x-2) = 8 - 4x

Step-by-step explanation:

Multiplying binomials all you have to do is distribute the 4

Multiply -4 by x to get: -4x

Muliply -4 by -2 to get: 8 (Because two negatives make a positive)

Now you have -4x + 8

Rewrite so it flows better and the answer is:

8 - 4x

6 0

2 years ago

Plz can someone help me with number 5?

Anettt [7]

Answer:

Step-by-step explanation:Trust

7 0

2 years ago

What are the letters in the English alphabet that has reflection symmetry and what has rotation symmetry and which has reflectio

BARSIC [14]

Capital letters that have rotational symmetry are: Z, S, H, N and O. The letters Z, S, H and N, when rotated 180 degrees clockwise or counterclockwise, will look the same after rotation completion.

Hope it helps you my dear :)

7 0

2 years ago

Read 2 more answers

20 POINTS

denis-greek [22]

Answer:

c. 441ft^2

Step-by-step explanation:

Area is height times length and since it's a square, safe to say that the sides are equal in length. So square root both of the given areas of the 2 square:

$\sqrt{841}$ = 29

$\sqrt{400}$ = 20

Now u have side b and c of the triangle, it's a right triangle so use the Pythagorean theorem a^2 + b^2 = c^2

a^2 + b^2 = c^2

a^2 + 20^2 = 29^2

a^2 + 400 = 841

subtract 4 from both sides

a^2 = 441

square root both sides

$\sqrt{a^2} = \sqrt{441}$

a = 21

Now the side a of the triangle is also a side of the small square therefore

21^2 = 441

8 0

2 years ago