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Ad libitum [116K]
3 years ago
6

7. A magnifying glass shows you an image of an object that is 7 times the object's actual size. An ant is 0.2 cm in length. What

is the length of its image in the magnifying glass?
1 point
1.4 cm
14 cm
.03 cm
3 cm

8. Which isometry is equivalent to two reflections across parallel lines?
1 point
glide reflection
translation
rotation
dilation

9. Find the glide reflection rule that maps Triangle NOP to Triangle N'O'P'.
1 point
Image below
(x, y) --> (x - 1, y + 4) and reflect across x = -1
(x, y) --> (x + 4, y -1) and reflect across x = -1
(x, y) --> (x - 1, y + 4) and reflect across y = -1
(x, y) --> (x + 4, y - 1) and reflect across y = -1

10. Which transformations result in a preimage and image with opposite orientations?
1 point
Dilations only
Translations and rotations
Rotations and reflections
Reflections and glide reflections

Mathematics
1 answer:
Bess [88]3 years ago
4 0
#1) (b)
#2) (d)
#3) (d)

My explanations are the same as your previous questions.
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Which math pattern was used in the Iraq war to find out the position of the bomb landing?
Monica [59]

Answer:

It was the The Large Cardinal Project.

Step-by-step explanation:

They used this form of math to calculate the precise place the bomb would land, which was the town where the dictator lived

3 0
3 years ago
Read 2 more answers
A manufacturer of Christmas light bulbs knows that 10% of these bulbs are defective. It is known that light bulbs are defective
andriy [413]

Answer:

(a) P(X \leq 20) = 0.9319

(b) Expected number of defective light bulbs = 15

(c) Standard deviation of defective light bulbs = 3.67

Step-by-step explanation:

We are given that a manufacturer of Christmas light bulbs knows that 10% of these bulbs are defective. It is known that light bulbs are defective independently. A box of 150 bulbs is selected at random.

Firstly, the above situation can be represented through binomial distribution, i.e.;

P(X=r) = \binom{n}{r} p^{r} (1-p)^{2} ;x=0,1,2,3,....

where, n = number of samples taken = 150

            r = number of success

           p = probability of success which in our question is % of bulbs that

                  are defective, i.e. 10%

<em>Now, we can't calculate the required probability using binomial distribution because here n is very large(n > 30), so we will convert this distribution into normal distribution using continuity correction.</em>

So, Let X = No. of defective bulbs in a box

<u>Mean of X</u>, \mu = n \times p = 150 \times 0.10 = 15

<u>Standard deviation of X</u>, \sigma = \sqrt{np(1-p)} = \sqrt{150 \times 0.10 \times (1-0.10)} = 3.7

So, X ~ N(\mu = 15, \sigma^{2} = 3.7^{2})

Now, the z score probability distribution is given by;

                Z = \frac{X-\mu}{\sigma} ~ N(0,1)

(a) Probability that this box will contain at most 20 defective light bulbs is given by = P(X \leq 20) = P(X < 20.5)  ---- using continuity correction

    P(X < 20.5) = P( \frac{X-\mu}{\sigma} < \frac{20.5-15}{3.7} ) = P(Z < 1.49) = 0.9319

(b) Expected number of defective light bulbs found in such boxes, on average is given by = E(X) = n \times p = 150 \times 0.10 = 15.

Standard deviation of defective light bulbs is given by = S.D. = \sqrt{np(1-p)} = \sqrt{150 \times 0.10 \times (1-0.10)} = 3.67

8 0
3 years ago
A baby was born with a weight of 5 pounds and then began to gain 1.25 pounds per month. Write an equation for W,W, in terms of t
vovangra [49]
5+1.25t=w five months at start plus 1.25 per month equals the total weight
5 0
3 years ago
If you answer this I will mark you brainliest
Temka [501]

Answer:

Here is the ans..hope it helps:)

8 0
2 years ago
Explain in your own words why (x + y)2 ≠ x2 + y2. Provide a numerical example to illustrate.
bekas [8.4K]
Im not sure if you wrote this wrong because (x+y)2 does equal x2+y2. An example would be if x equals 3 and y equals 4 (3+4)2=(3)2+(4)2 (7)2=6+8 14=14.
6 0
3 years ago
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