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4 years ago

6

I am the number of red tiles in a design with red and blue tiles. The red tiles each have 3 sides. The blue tiles each have 5 si

des. There are 3 blue tiles. There are 30 sides on the tiles in all. What number am I?

1 answer:

zzz [600]4 years ago

7 0

15: the red tiles are triangle, blue tiles are pentagons

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A program gives computers to families with schools with middle-aged children. They have a certain number of computers to distrib

zhannawk [14.2K]

Answer:

$\text{2, 1, 3, 1, 1}$

Step-by-step explanation:

$\text{There are a total of 8 computers and 16 school-aged children,} \\\text{therefore there must be 2 children per computer.}\\\frac{16}{8}=2 \text{ (As shown)}\\\text{The families each with 4, 2, 6, 2, 2 children should get;}\\\text{2, 1, 3, 1, 1 computers respectively.}$

6 0

3 years ago

Nine students take a test, none get the same score, and each score is a positive integer. If their mean score is 14, then what i

Brrunno [24]

the highest possible score on the test is 24

4+6+10+12+15+17+18+20+24= 126/9 = 14.

5 0

4 years ago

Find the product (4x - 3y)3

uranmaximum [27]

Answer:

12x - 9y

Step-by-step explanation:

According to the distributive property:

3(4x - 3y) =

3*4x - 3*3y =

12x - 9y

5 0

3 years ago

Read 2 more answers

34 is 40% of what number (a)6<br>(b)85<br>(c)60<br>(d)0.85

Elena-2011 [213]

<span>so, 6 is way to low to be a possibility.</span>

and 30 is half of 60 so 34 wouldn't be 40 percent of 60.

and, it wouldn't be 0.85 that is less than 6 so they are both way too low

from my understanding the answer would be 85 hope i helped. :)<span />

6 0

3 years ago

Read 2 more answers

A model rocket is launched with an initial upward velocity of 30 m/s. The rockets height (in meters) after t seconds is given by

daser333 [38]

9514 1404 393

Answer:

t = 3-√7 and 3+√7 seconds after launch

Step-by-step explanation:

You want to find the values of t that make h=10.

10 = 30t -5t^2

t^2 -6t = -2 . . . . . divide by -5

t^2 -6t +9 = 7 . . . add 9 to complete the square

(t -3)^2 = 7 . . . . . write as a square

t -3 = ±√7 . . . . . . take the square root

t = 3 ±√7 . . . . . . values of t for which height is 10 meters

__

These values are about 0.354 seconds, and 5.646 seconds.

5 0

3 years ago