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Diano4ka-milaya [45]
3 years ago
11

When we add/subtract fractions, why do we need denominators?​

Mathematics
1 answer:
adoni [48]3 years ago
6 0

Answer:

Step-by-step explanation:

so we know what to add or subtract by

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4x-5,4(x-5),4(x+5) drag the phrases into each box to match each expression five sang the sum of four and number five more than t
jeyben [28]

Answer:

4x-5= 5 less than the product of 4 and a number. 4 (x-5)= The product of 4 and the difference of a number and 5.  4(x+5) ​= The product of 4 and the sum of a number and 5.

Step-by-step explanation:

I took the test online in K12 and when I reviewed it said that those are the correct answer.

8 0
3 years ago
Can a triangle be formed with the sides lengths of 7 cm, 5 cm and 12 cm?
laiz [17]

Answer:

NO because 7+5=12

The sum must be larger (not equal to) the longest side. If it's exactly the same, there's no room to for the shorter two sides to angle up to form a triangle.

5 0
2 years ago
In quadratic formula
lorasvet [3.4K]

x² - x - 12 = 0


x = \dfrac{-b \pm \sqrt{b^{2} - 4ac}}{2a}


a = 1, b = -1, c = -12

x = \dfrac{1 \pm \sqrt{(-1)^{2} - 4(1)(-12)}}{2(1)}


x = 4 or -3


Answer: 4 or -3

4 0
3 years ago
The product of 3 and the square of a number increased by that number
shepuryov [24]

Answer: 3?

Step-by-step explanation:

8 0
3 years ago
Need help solving this 10x+32
Usimov [2.4K]
10x+32=0
10x=-32
x=-32/10 or -3.2 or -16/5

8 0
3 years ago
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