Answer:
Step-by-step explanation:
a² - b² = (a + b) (a - b)
1)x² - 36 = x² - 6² = (x + 6)(x-6)
2) 4x² - 16 = 4x² - 4*4 = 4(x² - 4)
= 4(x² -2²)
= 4(x + 4)(x-4)
3) 9x² -1 = 3²x² - 1² = (3x)² - 1²
=(3x + 1)(3x - 1)
The best store to buy the notebooks is store B.
Hello, there!
88 = 4a + x
Rewrite the equation as <span><span>4a+x=88
</span><span>
4a+x=88
</span></span>Since <span><span>4a</span></span> does not contain the variable to solve for, move it to the right side of the equation by subtracting <span><span>4a </span></span>from both sides.<span>
4a + x = 88
-4a -4a
Therefore, x = 88 - 4a
Our answer is x = 88 - 4a
We can't simplify this any further, as we have no value of a.
I hope I helped!
Let me know if you need anything else!
~ Zoe
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He is buying one large tree, so subtract the cost of a large tree from the total:
1400 - 200 = 1200
He can spend 1200 on small trees.
Divide 1200 by the cost of a small tree to find how many small trees can be bought:
1200 / 150 = 8
He can buy 8 small trees.
Total number of trees = 8 small + 1 large = 9 total
Answer:
4.8 hours or 4 4/5
Step-by-step explanation:
6 hours x 4/5 (0.8) = 4.8 hours (4 4/5).