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Stels [109]
3 years ago
11

What is the value of n? 9×27+2×31-28 = n

Mathematics
1 answer:
NARA [144]3 years ago
5 0
243 + 62 - 28 = n
277 = n
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Find f(-2) if f(x) = 4x + 8
zzz [600]

Answer:

0

Step-by-step explanation:

Use the hint lol
Step 1: Plug in -2 into the equation.
f(-2) = 4(-2) + 8


Step 2: Multiply
f(-2) = -8 + 8

Step 3: Add

f(-2) = 0

5 0
2 years ago
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Dennis wants to buy a card for his wife. Dennis calculates the amount of the card as $4.50. The actual price of a card is $4. Wh
Alex17521 [72]

Answer:

12.5%

Step-by-step explanation:

$4.50-$4/$4 x 100%

0.5/4x100%

50/4= 25/2 = 12.5%

8 0
3 years ago
I will mark brainiest is my answer is correct? I just got confuse because it saying do not simplify
sasho [114]

Answer:

m^2 +my-my-y^2

Step-by-step explanation:

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6 0
3 years ago
Question 1: find the volume of a cube whose total surface area is 486cm^2
lapo4ka [179]
<h3>The volume of cube is 729 cubic centimeter</h3>

<em><u>Solution:</u></em>

<em><u>The surface area of cube is given as:</u></em>

Surface\ area = 6a^2

Where, "a" is the length of side of cube

Given that, surface area = 486 square centimeter

486 = 6a^2\\\\a^2 = \frac{486}{6}\\\\a^2 = 81\\\\a = 9

<u><em>Find the volume of cube:</em></u>

volume\ of\ cube = a^3\\\\volume\ of\ cube = 9^3\\\\volume\ of\ cube = 9 \times 9 \times 9\\\\volume\ of\ cube = 729

Thus volume of cube is 729 cubic centimeter

8 0
3 years ago
Choose the graph that represents the point on a coordinate plane.
katen-ka-za [31]

Where are the graphs?

the graph that will represent the points, is the one with the points on it 8 for x value and 6 for y value

6 0
2 years ago
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