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Zinaida [17]
3 years ago
15

M

Mathematics
1 answer:
Ierofanga [76]3 years ago
4 0

Answer:

see below

Step-by-step explanation:

m/3 + 4 = 7

Subtract 4 from each side

m/3+4-4 = 7-4

m/3 = 3

Multiply each side by 3

m/3*3 = 3*3

m =9

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Round your answer to the nearest hundredth BC=?
miskamm [114]

Answer:

BC = 1.71

Step-by-step explanation:

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α = 70°

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sin α = o/h

cos α= a/h

tan α = o/a

we see that it has (angle, adjacent, hypotenuse)

we look at which meets those data between the sine, cosine and tangent

is the cosine

cos α = a/h

Now we replace the values ​​and solve

cos 70 = a/5

0.34202 = a/5

0.34202 * 5 = a

1.7101 = a

round to the neares hundredth

a = 1.7101 = 1.71

BC = 1.71

7 0
3 years ago
Pls help I’m struggling a lot
miskamm [114]

Answer:

the second one

Step-by-step explanation:

i read the problem and answered it

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Prove that (2n+1)^2 - (2n+1)^2 is a multiple of 8 for all positive integer values of n
kogti [31]

Answer:

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Step-by-step explanation:

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