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4 years ago

Explain why a three-dimensional figure with a curved surface is not a polyhedron

Mathematics

1 answer:

max2010maxim [7]4 years ago

5 0

Hope this can help explain better got you. :)

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A DJ has a total of 1075 dance, rock,and country songs on her system.The dance selection is three times the size of the rock sel

igor_vitrenko [27]

Dance (D) + Rap (R) + Country (C) = 1,075 songs
D = 3R
C = R + 105

RAP
Subtract 105 from both side:
(3R) + R + (R + 105) = 1,075
-105 -105

Combine all R's:
(3R) + R + R = 970
5R = 970

Divide both sides by 5:
5R = 970
/5 /5
R = 194

DANCE
D = 3(R)
D = 3(194)
D = 582

COUNTRY
C = R + 105
C = 194 + 105
C = 299

So, the DJ has a total of 194 rap songs, 582 dance songs, and 299 country songs.

6 0

4 years ago

Solve x and give our answer as a improper fraction in its simplest form:

Diano4ka-milaya [45]

Hello!

Explanation:

Distributive property: → a(b+c)=ab+ac

Expand.

$6(x-9)=6x-54$

$6x-54=3x+2$

First, add by 54 from both sides of an equation.

$6x-54+54=3x+2+54$

Then, simplify by equation.

$6x=3x+56$

You can also subtract by 3x from both sides of an equation.

$6x-3x=3x+56-3x$

Simplify.

$3x=56$

Next, divide by 3 from both sides of an equation.

$\frac{3x}{3}=\frac{56}{3}$

Answer: → $\boxed{x=56/3}$ and $x=18.6=19.0$

Hope this helps!

Have a great day!

-Charlie

7 0

4 years ago

At a school number of boys:number of girls = 1:9 there are 124 more boys than girls. Work out the total number of students at th

kykrilka [37]

124 x 9 = the amount of girls which is 1116 then add the boys which is 124 so 1116 + 124 = 1250. After i did that i relized your question dont make sense

3 0

3 years ago

A farmer has a rectangular field with an area of 2 3/4 square miles. The field is 1/2 mile wide. What is the length of the field

Aloiza [94]

Answer:

A farmer has a rectangular field with an area of 3/4 square mile. The field is 1/2 ... The field is 1/2 mile wide. What is the length of the field? 2. See answers ... 3/4 divided by 1/2 is 1.5 or 5/2 therefore the field is 5/2 miles long

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Round 122.1587 to the nearest hundredth?

valina [46]

Answer:

100

Step-by-step explanation:

H T U

1 2 2

2 is a num below 5 therefore

2=0

8 0

3 years ago