Mathematics, 24.11.2019 21:31 jodonw5616

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Answer from: nestor59

28. a) -7.3 + 7.4

29. c) 3n + 0.18

Step-by-step explanation:

Question 28:

Given:

The equation is -9.6 + 9.5 + _________ = 0

In order to solve this, first let us simplify the terms -9.6 + 9.5.

-9.6 + 9.5 = -0.1

So, we are getting the sum of first 2 numbers as -0.1. Now, the result is 0. So, we know that, -a + a = 0. Therefore, the number that should come in the blanks should be -(-0.1) = 0.1

Now, among all the 4 choices, only choice (a) gives the sum as 0.1 as shown below:

-7.3 + 7.4 = 0.1

The options (b) and (c) has a result of 0 and option (d) sum is -0.1.

Therefore, the correct option is option (a).

Question 29:

Given:

The expression to simplify is given as:

2n+n+0.18

Using commutative property of addition, we add the like terms together. Here, the like terms are $2n\ and\ n$ . So, we add them as shown below:

2n+1n=(2+1)n=3n

Therefore, the given expression is simplified to 3n + 0.18 . Hence, the correct option is option (c).

Answer from: Quest

Intersecting secant-tangent theorem states that if a tangent segment and a secant segment are drawn to a circle from an exterior point, then the square of the measure of the tangent segment is equal to the product of the measures of the secant segment and its external secant segment.so to break it down: 1. pq acts as the tangent and ps as the secant with an intersection at p.sr = 21rp = 3x + 3pq = 4x + 4following to equation: tangent squared = the two segments multiplied by each otherso (4x + 4) ^ 2 = (3x + 3) • (21) simplifies to 16x^2 - 31x - 47 = 0 or (16x - 47)(x + 1) x = -1 or x = 47/162. pq acts as the tangent and ps as the secant with an intersection at p (again! )sr = 16rp = xpq = 15(15) ^ 2 = 16 • x225 = 16xx = 225/163. the interesting chords are proportional to each other so a ratio is possible to set up: ap dp 10 3 + x = = —— = pc pb 8 xcross multiple to get 10x = (3 + x)(8)x = 12

Answer from: Quest

christopher is 272,195 year old

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