the answer is D, because the “ a “ thats alone has an invisible one in front of it, so it’ll be 1a+2a+3a+4a
Answer:
4a²-9
Step-by-step explanation:
(2a+3)(2a-3) = (2a)²-3² {<em>Difference</em><em> </em><em>of</em><em> </em><em>two</em><em> </em><em>squares</em><em>}</em>
= 4a²-9
Answer:
Step-by-step explanation:
<u>Step 1: Distribute
</u>
<u />
<u>Step 2: Combine like terms
</u>
<u />
<u>Step 3: Subtract 7 from both sides
</u>
<u />
<u>Step 4: Add 2a to both sides
</u>
<u />
<u>Step 5: Divide both sides by 4
</u>
<u />
Answer:
Answer:
Step-by-step explanation:
Coniferous trees keep their needles all year with the exception of tamarack. They are good trees to plant for privacy and wind breaks or shelterbelts
Pines include native white, red, and jack. They have long needles.
Spruces, black and white, and firs. They have short needles. They are important sources of wood fiber in northern Minnesota, and are excellent choices for windbreaks or shelterbelts.
Cedars include white or red. Cedars have scaled needles. Smaller than pines and spruces, cedars can provide wildlife cover and food.
