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MA_775_DIABLO [31]
3 years ago
14

Lamis purchased n notebooks. They were 5 dollars each. Write an equation to represent the total cost c that Lamis paid.

Mathematics
2 answers:
Nadya [2.5K]3 years ago
8 0
N5=c

n=number of notebooks
c=total cost
Dimas [21]3 years ago
5 0
N x 5 = c hope this helps!
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Factor the following problems<br><br> -13=-4a-2b+c<br> 3=4a+2b+c<br> 5=16a+4b+c<br><br> Please Help!
Pie
1) -13 = -4a - 2b + c
 -13 = -2(2a + b) + c

2) 3 = 4a + 2b +c
  3 = 2(2a + b) + c

3) 5 = 16a + 4b + c
5 = 4(4a + b) + c

[ Final Answers are in bold ]

Hope this helps!
8 0
3 years ago
Quais são os zeros(ou raízes) da função quadrática f(x) = x² + 3x - 4? Assinale a alternativa correta. *
faust18 [17]

Given:

The quadratic function is:

f(x)=x^2+3x-4

To find:

The zeros of the given quadratic function.

Solution:

We have,

f(x)=x^2+3x-4

Splitting the middle term, we get

f(x)=x^2+4x-x-4

f(x)=x(x+4)-1(x+4)

f(x)=(x+4)(x-1)

For zeros, f(x)=0.

(x+4)(x-1)=0

x=-4,1

Therefore, the correct option is (b).

3 0
3 years ago
Hank estimated the width of the Door to his classroom in feet. What is a reasonable estimate?
yulyashka [42]
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7 0
3 years ago
Solve 3y + 20 = 3 +2y
zalisa [80]


3y + 20 = 3 + 2y

3y- 2y = 3-20

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3 0
3 years ago
Read 2 more answers
If x,y are in inverse proportion then complete the following table x= 42 y=-15 , x=30 y=-----
horrorfan [7]

Answer:

when x=30, y = -21

Step-by-step explanation:

x = k/y

x = 42 y = -15

x = k/y

42 = k/-15

Cross product

42 * -15 = k

-630 = k

k = - 630

Find y when x=30

x = k/y

30 = -630/y

Cross product

30 * y = - 630

30y = - 630

y = - 630/30

y = -21

when x=30, y = -21

7 0
2 years ago
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