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swat32
3 years ago
8

Subtract 60 from the sum of 8e and 20 when e=7

Mathematics
1 answer:
Diano4ka-milaya [45]3 years ago
8 0

Answer:

Subtract 60 from the sum of 8e and 20 when e=7

8e +20

8(7) + 20

56+20=76

76-60=16



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Answer:

see below

Step-by-step explanation:

prove: sin²x cos²y - cos²x sin²y ≡ sin²x - sin²y

we notice that the Right side only has sin² functions, hence we can start by trying to remove the cos² functions from the Left side.

Recall the identity: sin²α + cos²α = 1 , can be rearranged to give us:

cos²α = 1 - sin²a.

If we apply this to the left side of our equation, then

cos²y = 1-sin²y, and cos²x = 1-sin²x

Substituting these into the left side of the equation:

sin²x cos²y - cos²x sin²y

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7 0
4 years ago
A. Billy should choose 1/3 of 3/4; he’ll earn 1/15 more.
vazorg [7]

Answer:ANS.B

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3/12-2/10=30/120-24/120=6/120=1/20 ANS.B

5 0
4 years ago
What is the cube root of 3?
PtichkaEL [24]
The cube root of 3 is 1.44224957031
7 0
4 years ago
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The distance between -18 and 15 is equal to _____.
Komok [63]

Answer:

15 -(-18)

Step-by-step explanation:

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Josephine has a rectangular garden with an area of 2x2
sergeinik [125]

Answer:

Fourth example, (2x - 3) and (x + 2), are possible dimensions

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Let's go through all the responses one by one;

First of all the area of the rectangular garden can be computed through length times width, such that:

(x^2 - 3) * (2) = 2x^2 + x - 6,

(2x + 3) * (x-2) = 2x^2 + x - 6,

(2x + 2) * (x-3) = 2x^2 + x - 6,

(2x - 3) * (x + 2) = 2x^2 + x - 6

Now in each of these examples, it should be that the products are equivalent to the area according to the length by width rule, so let's see which is truly the correct dimensions by justifying whether the product is truly equivalent to the area.

First example:

2 * (x^2 - 3) = 2x^2 - 6

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Second example:

(2x + 3) * (x-2) = 2x^2- x - 6

Now 2x^2- x - 6 ≠ 2x^2 + x - 6 so the second example is not a possibility,

Third example:

(2x + 2) * (x-3) = 2x^2 - 4x - 6

Now 2x^2 - 4x - 6 ≠ 2x^2 + x - 6 so the third example is not a possibility,

Fourth example:

(2x - 3) * (x + 2) = 2x^2 + x - 6

Here 2x^2 + x - 6 = 2x^2 + x - 6 so the fourth example can act as possible dimensions

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3 years ago
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