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Marta_Voda [28]
3 years ago
12

I need help because i’m not smart :)

Mathematics
2 answers:
8_murik_8 [283]3 years ago
4 0
What is it referring too? is there a graph to it???
Makovka662 [10]3 years ago
3 0
Is there a graph on it? What is it reffering to??
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Can somebody please write it down like show the work I need to know thanks
Nataly [62]

Answer:

-5/33

Step-by-step explanation:

5 0
3 years ago
For every 9 customers, the chef prepares 2 loaves of bread.
ExtremeBDS [4]

Answer:

0.22

Step-by-step explanation:

2/9 = 0.22

7 0
2 years ago
The sum of thirteen and twice a number is seven less than six times a number. What is the number?
DiKsa [7]
The equation is 2x+6=x-7
then we solve it, 2x-x=-7-6
so x=-13
5 0
3 years ago
Hello I don’t understand question 9 a and b. Please show working out.<br> Thanks
brilliants [131]
A) I would make the positive integer x and then form an equation.

x + 30 = x^2 - 12
x + 42 = x^2
0 = x^2 - x - 42 this can be factorised
(x - 7) ( x + 6) Therefore x = 7 or x = -6

Since the question asks for a positive integer the answer is 7.

B) two positive numbers x and y.

X - y = 3
x^2 + y^2 = 117

Use these simultaneous equations to figure out each number.

Rearrange the first equation

x = y + 3

Then substitute it into the second equation.

(y+3)^2 + y^2 = 117
y^2 + 6y + 9 + y^2 = 117
2y^2 + 6y - 108 = 0
then factorise this.
(2y - 12) (y + 9)

This means that y = 6 or y = -9 but it’s 6 because that’s the only positive number.

Use y to find x

x = y + 3
x = 6 + 3
x = 9

So the answers are x = 9 and y = 6.
3 0
3 years ago
I need help in this asap please
Andre45 [30]
Do u still need the answer its been a week now!
6 0
3 years ago
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