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OlgaM077 [116]
3 years ago
11

Carmen wants to paint the ceiling of her restaurant. The ceiling is in the shape of a square. Its side lengths are 39 feet. Supp

ose each can of paint will cover 169 square feet. How many cans will she need to paint the ceiling?
Mathematics
1 answer:
MatroZZZ [7]3 years ago
5 0

Answer:

The answer is 9

Step-by-step explanation:

39X39 is 1521

1521/169=9

so carmen needs 9 cans of paint

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What is the value of X given that the two triangles are similar.
grin007 [14]

Answer:

x = 13

Step-by-step explanation:

ΔRST≈ΔYSZ

therefore:

RT/ST = YZ/SZ

(3x-7)/40 = (2x+2)/35

cross-multiply:

40(2x+2) = 35(3x-7)

80x+80 = 105x-245

80 = 25x-245

325 = 25x

325/25 = x

x = 13

3 0
3 years ago
The number of basketball games that must be scheduled in a league with n teams is given by G(n) = (n2 - n)/2 where each team pla
Pani-rosa [81]

Answer:

There are 7 teams in the league

Step-by-step explanation:

Given that the number of games is given by:

G(n) = \frac{(n^2-n)}{2}

The equation will be used to determine the number of games. As we already know, that 21 games are scheduled which means G(n) is 21 so we have to find n when G(n) is 21

Putting this mathematically

21 = \frac{n^2-n}{2}

Multiplying equation by 2

2*21 = 2*\frac{n^2-n}{2}\\42 = n^2-n\\n^2-n-42 = 0\\n^2-7n+6n-42 = 0\\n(n-7)+6(n-7) = 0\\(n-7)(n+6)=0\\n-7 = 0 => n=7\\n+6=0 => n=-6

As the number of teams cannot be negative, the number of teams in league are 7.

Hence,

There are 7 teams in the league

3 0
3 years ago
If function f is defined by f x( ) = 3x2 − 5x + 4, what is f x( − 4) ?
ch4aika [34]
F(-4) = 3 x 2 - 5(-4) + 4
3x2= 6
-5(-4)= 20
6-20= -14
-14+4= -10
f(-4) = -10
6 0
4 years ago
Helppppp meee plzz
Vikki [24]
1 and 4


All angles and sides are congruent:)
5 0
3 years ago
Does anybody know the answer to this, i need help.
yKpoI14uk [10]

Answer:

0.4

40%

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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