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Serga [27]
4 years ago
5

Please help with this for brainliest

Mathematics
1 answer:
Irina-Kira [14]4 years ago
8 0

Answer:

105cm^2

Step-by-step explanation:

5 times 6 = 30

30 div 2 = 15

6 times 15 = 90

90 + 15 = 105

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lbvjy [14]
Did you know that horses sleep standing up and also laying down
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7 0
3 years ago
Read 2 more answers
PLZ, I need urgent help with the 4 problems!!!
defon

Answer:

#2: 1) 34.89 = 3 × c

Step-by-step explanation:

Use some logic

3 boxes that cost the same, c, if each are $34.89, then multiply it by 3.

P. S.

I could be wrong, so keep that in mind.

5 0
3 years ago
Convert (4,000°) to rectangular form.
Dafna1 [17]

Answer:

x=4, y =0

Step-by-step explanation:

To convert to rectangular from, we use the formulas

x= rcos theta

y = rsin theta


Substitute  r=4 and theta =0

x = 4 cos (0)   = 4 (1) = 4

y = 4 sin (0) = 4(0) = 0


In rectangular form  (4,000°)  equals ( 4, 0)

5 0
4 years ago
(2a-b) * (a-2b) <br> (4x - 2) * (x -4)
MAXImum [283]

Q: (2a-b) * (a-2b)

(2−)(−2)

2(−2)+(−2)(−)

22−4+(−2)(−)

22−4−(−2)⋅

22−4+22−⋅

Q: (4x - 2) * (x -4)

(4−2)(−4)

4(−4)−2(−4)

42−16−2(−4)

42−16−2+8

42−16−2+8

42−18+8

42−18+8

Hope its help you !!

7 0
2 years ago
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The function f(t)=^ - 16t^ 2 +84t models the height of a ballt seconds after it was kicked straight up into the air. How many se
soldier1979 [14.2K]

Answer:

5.25 seconds

Step-by-step explanation:

When the ball hits the ground the height is zero

Equate f(t) to zero and solve for t , that is

- 16t² + 84t = 0 ← factor out - 4t from each term

- 4t(4t - 21) = 0

Equate each factor to zero and solve for t

- 4t = 0 ⇒ t = 0

4t - 21 = 0 ⇒ 4t = 21 ⇒ t = \frac{21}{4} = 5.25

t = 0 is the time when the ball is kicked

t = 5.25 is the time taken for the ball to hit the ground

5 0
3 years ago
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