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bazaltina [42]
4 years ago
12

State whether each statement is true or false,the sum of two positive integers is positive?

Mathematics
1 answer:
Dominik [7]4 years ago
5 0
True. if you add two positive numbers, the sum will always be positive..
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Carl can paint a room 3 hours faster than Jennifer can
Nata [24]
Jen take x hours.
Carl (x-3)hours.
Jen+carl take two hours;
This means;
In 1 hour, for they work
\frac{1}{x} + \frac{1}{x-3}
=\frac{(x-3)+x}{x(x-3)}
=\frac{2x-3}{x(x-3)}
Working together, they take two hours;
Take reciprocal of above equation and equate to two;
=\frac{x(x-3)}{2x-3} =2
x^{2}-3x=4x-6
x^{2} -7x+6=0
x^{2}-x-6x+6=0
x(x-1)-6(x-1)=0
(x-6)(x-1)=0
Take the bracket x-6=0 so that Carl works positive hours
x-6=0
x=6
8 0
3 years ago
Questions in photo pls help me its due tomorrow.
Paraphin [41]
When u simplify it will be x=3
6 0
3 years ago
Slope = 4, point (3,-2) is on the line
Leni [432]

Answer:

y = 4x + b

Step-by-step explanation:

We know that (3, -2) is on this line. So 3 = m(-2)+b.

This leaves us with two variables the slope (m) and the y intercept (b).

But wait a minute, the slope is given to us since it says slope = 4.

Our equation is now, 3 = 4(-2)+b

3 = -8 + b

b = 11.

Our final equation is now y = 4x + b.

(y,x) is a point on this line.

Hope this helped!

JoeLouis2

8 0
3 years ago
What is 20/25 as a percent
Serggg [28]

Answer:

80%

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Plz answer b I don't get it
rewona [7]
What is the question??
5 0
3 years ago
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