4 years ago

How many terms are there in the following expression: 3a + 3ab + 7b – 2c – 4d

1 answer:

3 0

Lets count...
3a...thats 1 term
3ab...thats 2
7b....thats 3
-2c....movin on up to 4
-4d....and we end at 5

so this expression has 5 terms since none of the terms can be combined :)

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ABC is isosceles. A=48 degrees and B=4x+4, solve for X

Alchen [17]

Answer:

x=15.5

Step-by-step explanation:

since ABC is isosceles two sides should be equal

A=48

B=4x+4 , since 2 sides should be equal B and C are equal

therefore C is also equal to 4x+4

ADD ALL:

48+4x+4+4x+4=180

48+8x+8=180

8x+56=180

Transpose 56 so its gonna be (-56)

8x=180-56

8x=124

DIVIDE BY 8:

x=15.5

7 0

4 years ago

What is Cot(x) / cos(x) ?

lutik1710 [3]

Answer:

cosecx

Step-by-step explanation:

$\frac{cotx}{cosx} \\ = \frac{1}{tanx} \div cosx \\ = (1 \div \frac{sinx}{cosx} ) \div cosx \\ = \frac{cosx}{sinx} \times \frac{1}{cosx} \\ = \frac{1}{sinx} \\ = cosecx$