4. Find each missing length to the nearest tenth. 3 7
1 answer:
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1. 
You need two numbers that multiply to 45 and add to -14.
Since the numbers must multiply to a positive number, 45, they must both be positive or both be negative. Since they must add to -14, they must both be negative.
The numbers are -9 and -5.
2.
<span>You need two numbers that multiply to 36 and add to -15.
Since the numbers must multiply to a positive number, 36, they must both be positive or both be negative. Since they must add to -15, they must both be negative.
The numbers are -12 and -3.
3.
</span>
<span>You need two numbers that multiply to -44 and add to -7.
Since the numbers must multiply to a negative number, -44, one number is positive, and one number is negative.
The numbers are -11 and 4.
Solve by factoring:
1.
or 
or 
2.
or 
or
or 
</span>
You need two numbers that multiply to 45 and add to -14.
Since the numbers must multiply to a positive number, 45, they must both be positive or both be negative. Since they must add to -14, they must both be negative.
The numbers are -9 and -5.
2.
<span>You need two numbers that multiply to 36 and add to -15.
Since the numbers must multiply to a positive number, 36, they must both be positive or both be negative. Since they must add to -15, they must both be negative.
The numbers are -12 and -3.
3.
</span>
<span>You need two numbers that multiply to -44 and add to -7.
Since the numbers must multiply to a negative number, -44, one number is positive, and one number is negative.
The numbers are -11 and 4.
Solve by factoring:
1.
2.
</span>