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slega [8]
3 years ago
14

Can someone help me asap I attempted to do it so just ignore that part ​

Mathematics
1 answer:
Sladkaya [172]3 years ago
6 0

Answer:

a = 180° -73°

b = 73°

c = 180° -73°

Step-by-step explanation:

73° and b are vertical angles, so are congruent (equal).

a and c are equal to each other and each is a linear angle with 73°, so is the supplement of that angle. You could write the equation as ...

a + 73° = 180°

but I prefer to get to the heart of it. The values of a and c are the difference between 180° and 73°.

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You are making 10 tons of concrete that is 37.9% cement by mixing a 25% cement mixture with a 68% cement mixture.
Mnenie [13.5K]
The 10 tons should have 37.9% cement.

Let the 25% mixture be x tons

Then the 68% mixture will be (10 -x) tons.

Using formula for mixtures:
Let p for percentage and w for weight in tons.

p₁w₁ + p₂w₂ = pw

25*x + 68*(10-x) = 37.9*10

25x + 680 - 68x = 379

680 - 43x = 379

680 - 379 = 43x

301 = 43x

43x = 301

x = 301/43

x = 7

Recall that x, was for the 25% mixture, 7 tons.

a) For the 68% mixture, = 10 - x = 10 -7 = 3 tons.

b) For the 25% mixture = x = 7 tons.  
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3 years ago
Una ciudad se encuentra 17 km al oeste y 8 km al norte de otra ¿cual es la distancia lineal entre las dos ciudades?
Liula [17]

Answer:

Could you put this in english so that i'm able to answer..?

Step-by-step explanation:

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3 years ago
If g( n ) = 3 n - 2, then what is the value of g(10)?
Paul [167]
The correct answer is 28
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How do you estimate 1,374×6
san4es73 [151]
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Answer:

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Step-by-step explanation:

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3 years ago
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