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SIZIF [17.4K]
3 years ago
14

If 1/2 gallon of paint covers 1/4 of a wall, then how much paint is needed to cover the entire wall?

Mathematics
2 answers:
castortr0y [4]3 years ago
6 0
The answer is d 2 gallons because half a gallon covers one fourth of the wall then a gallon will cover half meaning 2 gallons will cover the whole wall

Blizzard [7]3 years ago
3 0
The answer is D, because 1/2 of a bucket does 1/4 of a wall, so 1/2 multiplied by 4 is equal to 2.
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7z² 5z⁴ d³ d⁸ what strategy to simplify or model
Shalnov [3]

Answer:

35z at the power of 6 times d at the power of 11

Step-by-step explanation:

add the z's power together then the d's power

4 0
2 years ago
The roots of the quadratic equation $z^2 + bz + c = 0$ are $-7 + 2i$ and $-7 - 2i$. What is $b+c$?
Alexxx [7]

Answer:

67

Step-by-step explanation: Given the quadratic equation $z^2 + bz + c = 0$, Vieta's formulas tell us the sum of the roots is $-b$, and the product of the roots is $c$. Thus,

\[-b = (-7 + 2i) + (-7 - 2i) = -14,\]so $b = 14.$

Also,

\[c = (-7 + 2i)(-7 - 2i) = (-7)^2 - (2i)^2 = 49 + 4 = 53.\]Therefore, we have $b+c = \boxed{67}$.

There are many other solutions to this problem. You might have started with the factored form $(z - (-7 + 2i))(z - (-7 - 2i)),$ or even thought about the quadratic formula.

This is the aops answer :)

8 0
2 years ago
Three points, A, B, and C exists in space such that B is "between" A and C. It is known that AB=7, BC=4, and AC=9. Are points A,
EleoNora [17]

If the points are collinear, then that would mean that the points lie on the same line when joined to each other. In order to confirm this, the distances between the points must sum up to the length of the line.<span>

AB + BC = AC
7 + 4 ? 9
11 ≠ 9

<span>Since they do not sum up, therefore, the points are not collinear.</span></span>

8 0
2 years ago
I NEED HELP ! Ava's gym membership costs $50 each month plus a one-time $100 fee. Mark's gym membership costs $60 each month plu
asambeis [7]
For Ava if It’s 11 months and for mark it is 15 months and the number is 1,650! (I spent time doing this, and I did. Calculation to make sure you would get this right!)
3 0
3 years ago
A triangle has the length of 6cm and height of 8cm. The area of the rectangle is 5 times the area of the triangle. The rectangle
Y_Kistochka [10]
Area of triangle = 24cm
Area of rectangle = 120
therefore, w x 12 = 120
w = 10
4 0
2 years ago
Read 2 more answers
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