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andre [41]
2 years ago
13

tami uses square tiles to make an array. she places 5 tiles in each row. she makes 5 rows.how many square tiles does she use?

Mathematics
1 answer:
PIT_PIT [208]2 years ago
3 0

Answer: The answer is 25


Step-by-step explanation:

You multiply 5 times 5 and you get 25 or you could count 5 fingers 5 times

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Please help me in answers 6 and 8
Ivenika [448]
For #6

x + y = -10
x - y = 2

First solve for y in one of the equations

x - y = 2
-y = 2 - x
y = -2 + x
y = x - 2

Now substitute into one of the equations and solve for x

x + y = -10
x + x - 2 = -10
2x - 2 = -10
2x = -8
x = -4
3 0
3 years ago
A nightclub has approximated the demand for their Thursday night drink special by p^2+200q^2=177​, where p is the price​ (in dol
Irina18 [472]

Answer:

Step-by-step explanation:

Given the approximate demand function of night drink expressed as;

p^2+200q^2=177​,

p is the price​ (in dollars) and;

q is the quantity demanded​ (in thousands).

Given

p = $7

q = 800

Required

dq/dp

Differentiating the function implicitly with respect to p shown;

2p + 400d dq/dp = 0

400q dq/dp = -2p

200qdq/dp = -p

dq/dp = -p/100q

substitute p and q into the resulting equation;

dq/dp = -7/100(800)

dq/dp = -7/80000

dq/dp = -0.0000875

This means that the rate of change of quantity demanded with respect to the price is  -0.0000875

8 0
3 years ago
India or hot and Kelly visit the same number of museums ha visits to museum doing each of the her 3 days there if Kelly visits 3
Kisachek [45]

Answer:

  3 days

Step-by-step explanation:

The problem statement tells you that Kelly is there for 3 days.

6 0
3 years ago
Solve using system of equations by using elimination method for -5x+4y=2 ; 9x-4y=6
jek_recluse [69]

Answer:

y = 3

x = 2

Step-by-step explanation:

-5x + 4y = 2

9x - 4y = 6

Sum both eq.

-5x + 9x = 4x

+4y - 4y = 0

2 + 6 = 8

then:

4x + 0 = 8

4x = 8

x = 8/4

x = 2

from the first eq.

-5x + 4y = 2

-5*2 + 4y = 2

-10 + 4y = 2

4y = 2 + 10

4y = 12

y = 12/4

y = 3

Check:

from the second eq.

9x - 4y = 6

9*2 - 4*3 = 6

18 - 12 = 6

6 0
2 years ago
Why is 1 + (−5) equal to −4?
ruslelena [56]

Answer:

because its 5 units to the left on a horizontal number line

8 0
3 years ago
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