3 years ago

Question 30Explain how to use a net to find the surfacearea of a three-dimensional figure

Mathematics

1 answer:

irinina [24]3 years ago

6 0

Answer:

1. Create a three-dimensional figure net.

2. Determine the area of each net face.

3. To calculate the surface area of the cube, add the areas of all the net's faces.

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Solve the system of equations: 2x + 9y = 0 and 3x + 5y = 17.

choli [55]

<span>2x + 9y = 0 (1st)
</span><span>3x + 5y = 17 (2nd)

multiply (st) by 3 and (2nd) by 2

</span>6x + 27y = 0 (1st)
6x + 10y = 34 (2nd)
----------------------------subtract
17y = -34
y = -2

2x + 9y = 0
2x +9(-2) = 0
2x = 18
x = 9

answer
(9, -2)

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3 years ago

Dice Rolls: If you roll a pair of fair dice, what is the probability of each of the following? (round all answers to 4 decimal p

maria [59]

Answer:

(A)= 0

(B)= 1/9

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3 years ago

William is 3 years older than Charmaine.The sum of 3 times charmaines age and 2 times Williams age is 76.How old are William and

astra-53 [7]

Charmaine= x
William=x+3
3 times Charmaine = 3x
2times William = 2x+6
5x+6=76
5x=76-6
5x=70
X=14
Charmaine is 14
William is 3 years older so is 17

Check:
17x2= 34
14x3=42
34+42=76

So Charmaine is 14
William is 17

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3 years ago

If one bottle of soda costs .99, how much do three bottles cost? how much do they cost with 5% tax added on?

bija089 [108]

3 sodas cost $2.97 +.15 tax total $3.12

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3 years ago

Jay took out a small-business loan for 210,000. The terms of the loan are 5% annual interest for four years.

Marta_Voda [28]

5% of 210000=
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so 4 years will be $42000

he'll pay 42000 + 210000
$252000
answer is B

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4 years ago