3 years ago

In ΔDEF, e = 49 cm, d = 73 cm and ∠D=52°. Find all possible values of ∠E, to the nearest degree.

Mathematics

1 answer:

Nikolay [14]3 years ago

4 0

Answer: 32

Step-by-step explanation:

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3 years ago

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What are the coordinates of the image of vertex F after a

Yuri [45]

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3 years ago

One quarter has a mass of 5.67 grams. Which is the mass of two rolls of quarters each containing 40 quarters?

Brilliant_brown [7]

9514 1404 393

Answer:

453.6 g

Step-by-step explanation:

The mass of 80 quarters will be 80 times the mass of 1 quarter:

80 × 5.67 g = 453.6 g

The mass of two rolls of quarters is 453.6 grams.

_____

<em>Additional comment</em>

That's about 1.0000 pounds.

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3 years ago

Mathematics can uh solve this please

guajiro [1.7K]

Answer:

$a^3 + 1 = 0$

Step-by-step explanation:

We start with the equation:

$a + \frac{1}{a} = 1$

We want to find the value of:

$a^3 + 1 =$

We can start with our previous equation and multiply both sides by a:

$(a + \frac{1}{a})*a = 1*a\\a^2 + 1 = a$

Now we can rewrite our initial expression as:

$a = 1 - \frac{1}{a}$

Replacing that in the right side, we get:

$a^2 + 1 = a = 1 - \frac{1}{a}$

Now again, let's multiply both sides by a

$a*(a^2 + 1) = a*(1 - \frac{1}{a} )\\a^3 + a = a - a/a\\a^3 + a = a - 1\\a^3 = -1\\a^3 + 1 = 0$

So we can conclude that:

$a^3 + 1 = 0$

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3 years ago

Once a commercial plane reaches the desired altitude, the pilot often travels at a cruising speed. On average, the cruising spee

LiRa [457]

We know that the commercial plane travels 570 miles/hour. To find out how many miles does the plane travel, we do:
570 × 7 = 3990 miles.
Therefore, the plane travel 3990 miles.

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4 years ago