For 2a, we plug 3 in to get (4*3+3)/(3^2-7)=15/2. Since 2 is a prime number and 15 is not divisible by 2, this is simplest form. For b, using PEMDAS, division goes before addition or subtraction and 3/3^3 would therefore be done and you could not add 4*3 beforehand (or subtract 7).
For 4a, we plug it in to get sqrt(25-(-3)^2)=sqrt(25-9)=sqrt(16)=4
For b, since 13^2=169 and 25-169 is negative, we cannot find the square root due to that nothing squared is negative.
Multiply it all by 12 so it's easier to do. -> 4y + 3 = 5. Now subtract 3 from each side. 4y = 2 and finally divide by 4 and you get y is equal to 1/2 or .5
B = 12.61 cm solved by using the law of sines
(I included a picture, so please let me know if you get it. If not I will add a comment explaining it)
Answer:
24
Step-by-step explanation:
Given
3x³ ← substitute x = 2 into the expression
= 3 × 2³ = 3 × 8 = 24
Answer:
66 tens - 38 tens= 58 tens
Step-by-step explanation:
You will start off by making the 6 in the ones place a 16 since you can't subtract 6-8 and change the 6 in the tens to a 5 since you borrowed. Hope this helps! :)
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