3 years ago

Simplify: 40÷4+2×6÷4-3

2 answers:

6 0

You use PEMDAS. So 40 divided by 4 is 10. Then 2x6=12 since multiplication was first before division in the equation. 12 divided by 4 is 3. So you are left with 10+3-3. 10 + 3=13 then 13-3 would be 10.

Oliga [24]3 years ago

5 0

Simplify the experssion and you get 10.
Hope this helps!

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2 years ago

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worty [1.4K]

Answer:

a=6.9

Step-by-step explanation:

Since you know that C is a right angle, you can use the Law of Sines to find a. The first step is to find the size of the angle A, which is 180-74-90=16. Now, you set up a ratio that involves 3 knowns and one unknown to get $\frac{\sin(90^\circ)}{25} = \frac{\sin(16^\circ)}{a}$ , which after cross multiplying yields $a=\sin(16^\circ)\cdot25\approx 6.9$ . PM me if you have any questions?